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Journal articles on the topic 'Triple phase Contrast Enhanced Computed Tomography'

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1

Stehlík, Ladislav, Morena Di Tommaso, Francesca Del Signore, et al. "Triple-Phase Multidetector Computed Tomography in Distinguishing Canine Hepatic Lesions." Animals 11, no. 1 (2020): 11. http://dx.doi.org/10.3390/ani11010011.

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The liver has a unique vascular supply, and triple-phase contrast-enhanced computed tomography examinations are being performed in order to characterize liver lesions. This study aimed to look for any associations between the attenuation values of liver lesions and their histological classification. The inclusion criteria for this retrospective study were focal or multifocal liver lesions and histological diagnosis. All of the dogs underwent pre-contrast and triple-phase postcontrast computed tomography (CT) examinations with identical timings of the postcontrast series. Thirty-one dogs were i
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Takaji, Ryo, Yasunari Yamada, Shunro Matsumoto, et al. "Small pancreatic ductal carcinomas on triple-phase contrast-enhanced computed tomography: enhanced rims and the pathologic correlation." Abdominal Radiology 43, no. 12 (2018): 3374–80. http://dx.doi.org/10.1007/s00261-018-1645-6.

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Yu, Mei, Qianjin Feng, Wei Yang, Yang Gao, and Wufan Chen. "Extraction of Lesion-Partitioned Features and Retrieval of Contrast-Enhanced Liver Images." Computational and Mathematical Methods in Medicine 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/972037.

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The most critical step in grayscale medical image retrieval systems is feature extraction. Understanding the interrelatedness between the characteristics of lesion images and corresponding imaging features is crucial for image training, as well as for features extraction. A feature-extraction algorithm is developed based on different imaging properties of lesions and on the discrepancy in density between the lesions and their surrounding normal liver tissues in triple-phase contrast-enhanced computed tomographic (CT) scans. The algorithm includes mainly two processes: (1) distance transformati
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Akshaya, R., Satapathy Gitanjali, Sekhar Mohanty Sudhansu, et al. "Role of Ultrasonography Parameters to Characterise Benign vS Malignant Focal Hepatic Lesions in Correlation with Triple Phase Contrast Enhanced Computed Tomography and / or Histopathological Findings." International Journal of Pharmaceutical and Clinical Research 16, no. 10 (2024): 1301–9. https://doi.org/10.5281/zenodo.14194289.

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<strong>Objectives:&nbsp;</strong>The present study was to evaluate the role of ultrasonography parameters to characterise focal liver lesions. And to assessed the sensitivity and specificity of ultrasonography in the evaluation of focal liver lesions in correlation with Triple phase CECT and/or histopathological examination.&nbsp;<strong>Methods:&nbsp;</strong>Patients meeting the specified criteria underwent a thorough ultrasound examination of liver that was carried out with GE Voluson S10, GE Voluson S6 , using 1-5 MHz curvilinear probe and 12 MHz linear probe. The patients were followed u
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Giri, Rohit Kumar, Shubhekshya Regmi, and Hensan Khadka. "Morphometric Study of Renal Vasculature with Multidetector Computed Tomography." Medical Journal of Eastern Nepal 4, no. 01 (2025): 4–9. https://doi.org/10.3126/mjen.v4i01.80694.

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Background: The end-stage renal disease is a public health problem with an increasing incidence rate and preoperative evaluation of renal vessels is important for transplant. The arteries and veins differ in terms of their level of origin, size, obliquity, level of confluence, tributaries, and relationships. The purpose of the study was to examine how common different anatomical variations in the renal vessels are, using Triple phase Contrast Enhanced Computed Tomography (CECT). Methods: A cross-sectional observational study was conducted. A total of 89 patients undergoing Triple Phase CECT of
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Jain, Anshul, Jyoti Ranjan Swain, Lalchhandami Colney, Dilip Kumar Muduly, Mahesh Sultania, and Madhabananda Kar. "Incidental gallbladder cancer and its contemporary management: From evaluation to targeted therapy." Asian Journal of Oncology 10 (February 13, 2023): 1. http://dx.doi.org/10.25259/asjo-2022-64-(426).

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Gall bladder cancer (GBC) is the commonest malignancy of biliary tract. It is locally aggressive and potentially fatal in most of the patients. With the rise in the number of laparoscopic cholecystectomies being performed worldwide, incidental presentation of GBC is becoming common. The revelation of cancer for benign cholecystectomy presents a challenge. Incidental GBC needs detailed evaluation that includes review of preoperative imaging, histopathology report of cholecystectomy and high quality imaging to look for residual or metastatic disease. It is imperative to correctly stage the disea
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Godt, Johannes Clemens, Torsten Eken, Anselm Schulz, Cathrine K. Johansen, Anette Aarsnes, and Johann Baptist Dormagen. "Triple-split-bolus versus single-bolus CT in abdominal trauma patients: a comparative study." Acta Radiologica 59, no. 9 (2018): 1038–44. http://dx.doi.org/10.1177/0284185117752522.

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Background Split-bolus computed tomography (CT) is a recent development in trauma imaging. Instead of multiple scans in different contrast phases after a single contrast bolus, split-bolus protocols consist of one single scan of the thorax and abdomen after two or three contrast injections at different points of time. Purpose To evaluate and compare image quality and injury findings of a new triple-split-bolus CT (TS-CT) protocol of thorax and abdomen with those of a portal venous phase CT (PV-CT) in the same patient group. Material and Methods Trauma patients in 2009–2012 who underwent both t
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TIBERMACINE, Walid, Mohamed Redha SAKER, Raouf MENOURA, et al. "Detection of liver metastases in patients with pancreatic adenocarcinoma: MRI versus CT." Batna Journal of Medical Sciences (BJMS) 11, no. 3 (2024): 361–65. http://dx.doi.org/10.48087/bjmsoa.2023.11312.

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Introduction. Detection of liver metastases is important to guide therapeutic management of pancreatic cancer. Data suggest that magnetic resonance imaging (MRI) is more sensitive than computed tomography (CT) for the diagnosis of liver metastases from pancreatic cancer. However, MRI is currently not recommended in several guidelines. Purpose. To compare the performance of CT vs MRI in detection of liver metastases in patients with pancreatic adenocarcinoma. Methods. This was a retrospective single-center study over 24 months from January 2020 to December 2021 of patients suspected of having P
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9

Monjardim, Rodrigo da Fonseca, Danilo Manuel Cerqueira Costa, Ricardo Francisco Tavares Romano, et al. "Diagnosis of hepatic steatosis by contrast-enhanced abdominal computed tomography." Radiologia Brasileira 46, no. 3 (2013): 134–38. http://dx.doi.org/10.1590/s0100-39842013000300005.

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Objective To evaluate the diagnostic capacity of abdominal computed tomography in the assessment of hepatic steatosis using the portal phase with a simplified calculation method as compared with the non-contrast-enhanced phase. Materials and Methods In the present study, 150 patients were retrospectively evaluated by means of non-contrast-enhanced and contrast-enhanced computed tomography. One hundred patients had hepatic steatosis and 50 were control subjects. For the diagnosis of hepatic steatosis in the portal phase, the authors considered a result of &lt; 104 HU calculated by the formula [
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10

Kulamarva, Ganaraj, Supriya Prathibha Shankaranarayana Bhat, Sunil Dadhich, Narendra Bhargava, and Prabhat Ranjan. "Inspecting Management Strategies of Hepatocellular Carcinoma in a Tertiary Centre in Western Rajasthan." Journal of Evolution of Medical and Dental Sciences 10, no. 18 (2021): 1314–18. http://dx.doi.org/10.14260/jemds/2021/277.

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BACKGROUND Hepatocellular carcinoma (HCC) is a lethal malignancy which mostly develops in patients with cirrhosis. It is usually diagnosed late in the course of the illness and the median survival following diagnosis ranges between 6 - 20 months. India lacks data on management strategies and their efficacy. In the absence of data on treatment protocols and its adequacy; we evaluated our own centre data for a period of 1 year to get the estimate of incidence, aetiology, treatment adequacy and response to treatment. Barcelona Clinic Liver Cancer (BCLC) prognostic staging classification comprisin
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11

Costa, Danilo Manuel Cerqueira, Priscila Silveira Salvadori, Rodrigo da Fonseca Monjardim, et al. "When the non-contrast-enhanced phase is unnecessary in abdominal computed tomography scans? A retrospective analysis of 244 cases." Radiologia Brasileira 46, no. 4 (2013): 197–202. http://dx.doi.org/10.1590/s0100-39842013000400004.

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Objective: To evaluate the necessity of the non contrast-enhanced phase in abdominal computed tomography scans. Materials and Methods: A retrospective, cross-sectional, observational study was developed, evaluating 244 consecutive abdominal computed tomography scans both with and without contrast injection. Initially, the contrast-enhanced images were analyzed (first analysis). Subsequently, the observers had access to the non-contrast-enhanced images for a second analysis. The primary and secondary diagnoses were established as a function of the clinical indications for each study (such as tu
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Zhang, Yan, Jiabin Liu, Fei Li, Feng Cao, and Ang Li. "Contrast-Enhanced Computed Tomography Does Not Provide More Information about Sarcopenia than Unenhanced Computed Tomography in Patients with Pancreatic Cancer." Contrast Media & Molecular Imaging 2021 (April 23, 2021): 1–8. http://dx.doi.org/10.1155/2021/5546030.

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Objective. The aim of this study was to understand whether enhanced CT can provide more information than unenhanced CT on diagnosis of sarcopenia. Materials and Methods. We reviewed the enhanced CT data of 45 patients of pancreatic cancer. Manual tracing of the psoas muscles was used for measuring the cross-sectional muscle areas and attenuation at umbilicus level; afterwards, PMI, PMD, and Δ PMD were calculated. Results. In the unenhanced scanning, arterial, venous, and parenchymal phases of enhanced CT, PMI values were 6.905 ± 2.170, 6.886 ± 2.195, 6.923 ± 2.239, and 6.866 ± 2.218, respectiv
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13

Shirai, Ryota, Takuya Kunii, Akio Yoneyama, et al. "Enhanced renal image contrast by ethanol fixation in phase-contrast X-ray computed tomography." Journal of Synchrotron Radiation 21, no. 4 (2014): 795–800. http://dx.doi.org/10.1107/s1600577514010558.

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Phase-contrast X-ray imaging using a crystal X-ray interferometer can depict the fine structures of biological objects without the use of a contrast agent. To obtain higher image contrast, fixation techniques have been examined with 100% ethanol and the commonly used 10% formalin, since ethanol causes increased density differences against background due to its physical properties and greater dehydration of soft tissue. Histological comparison was also performed. A phase-contrast X-ray system was used, fitted with a two-crystal X-ray interferometer at 35 keV X-ray energy. Fine structures, inclu
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Dreier, Till, Robin Krüger, Gustaf Bernström, Karin Tran-Lundmark, Isabel Gonçalves, and Martin Bech. "Laboratory x-ray nano-computed tomography for biomedical research." Journal of Instrumentation 19, no. 10 (2024): P10021. http://dx.doi.org/10.1088/1748-0221/19/10/p10021.

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Abstract High-resolution x-ray tomography is a common technique for biomedical research using synchrotron sources. With advancements in laboratory x-ray sources, an increasing number of experiments can be performed in the lab. In this paper, the design, implementation, and verification of a laboratory setup for x-ray nano-computed tomography is presented using a nano-focus x-ray source and high geometric magnification not requiring any optical elements. Comparing a scintillator-based detector to a photon counting detector shows a clear benefit of using photon counting detectors for these appli
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15

Kotelnikova, L. P., and Yu V. Zhizhilev. "Computed tomography in the differential diagnosis of adrenal tumors." Endocrine Surgery 15, no. 4 (2022): 38–43. http://dx.doi.org/10.14341/serg12761.

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Background. Modern methods of topical diagnostics have high accuracy and can determine the morphological structure of the adrenal tumor with high probability before surgery, but none of them has 100% sensitivity and specificity. Contrast-enhanced computed tomography is most commonly used by clinicians. The criteria for the malignancy of an adrenal tumor determined by this method continue to be discussed.The aim is to evaluate the effectiveness of contrast-enhanced computed tomography in the preoperative diagnosis of adrenal tumors and to analyze errors.Materials and methods. Contrast-enhanced
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16

Mittal, Arjun, and R. R. Kumbhar. "Evaluation of focal liver lesions using triple phase contrast computed tomography among Indian patients." Bioinformation 20, no. 10 (2024): 1429–32. https://doi.org/10.6026/9732063002001429.

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Detecting and characterizing FLL remains a significant challenge in clinical practice. Therefore, it is of interest to evaluate the patients with FLL using TPC-CT. 80 patients spanned for around 18 months to correlate between CT scan findings &amp; final diagnosis. We found male dominancy with high sensitivity for diagnosing hepatocellular carcinoma (HCC) at 73.7%, hemangioma’s at 94.1%, and metastases at 98.4%, whereas specificity for diagnosing all cases when the typical enhancement pattern for each lesion type was considered. We conclude that, tri-phasic CT can be widely accepted CT protoco
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17

Guha, Siddharth, Abdalla Ibrahim, Qian Wu, et al. "Machine learning-based identification of contrast-enhancement phase of computed tomography scans." PLOS ONE 19, no. 2 (2024): e0294581. http://dx.doi.org/10.1371/journal.pone.0294581.

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Contrast-enhanced computed tomography scans (CECT) are routinely used in the evaluation of different clinical scenarios, including the detection and characterization of hepatocellular carcinoma (HCC). Quantitative medical image analysis has been an exponentially growing scientific field. A number of studies reported on the effects of variations in the contrast enhancement phase on the reproducibility of quantitative imaging features extracted from CT scans. The identification and labeling of phase enhancement is a time-consuming task, with a current need for an accurate automated labeling algo
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18

Guha, Siddharth, Abdalla Ibrahim, Pengfei Geng, et al. "Variability of HCC Tumor Diameter and Density Measurements on Dynamic Contrast-Enhanced Computed Tomography." Tomography 11, no. 3 (2025): 36. https://doi.org/10.3390/tomography11030036.

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Purpose: In cancers imaged using contrast-enhanced protocols, such as hepatocellular carcinoma (HCC), formal guidelines rely on measurements of lesion size (in mm) and radiographic density (in Hounsfield units [HU]) to evaluate response to treatment. However, the variability of these measurements across different contrast enhancement phases remains poorly understood. This limits the ability of clinicians to discern whether measurement changes are accurate. Methods: In this study, we investigated the variability of maximal lesion diameter and mean lesion density of HCC lesions on CT scans acros
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Dolidze, D. D., S. D. Covantsev, Z. A. Bagatelia, I. N. Lebedinskyi, E. G. Kirilenko, and A. V. Bumbu. "Assessment of malignant potential of thyroid mass using computed tomography." Endocrine Surgery 19, no. 1 (2025): 23–31. https://doi.org/10.14341/serg12935.

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BACKGROUND: Thyroid nodules are detected in 20-68% of patients. However, there is no data in the literature on the criteria for malignancy in CT studies. The introduction of CT into widespread practice has led to an increase in the detection of formations, including the thyroid gland, requiring additional examination. The use of additional imaging methods will improve the detection of malignant tumors of the thyroid gland.AIM: The purpose of this study was to address the gap in thyroid CT imaging and to evaluate whether contrast-enhanced multiphase multidetector CT is suitable for assessing th
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Sandomenico, Fabio, Valerio Arpaia, Ferdinando De Rosa, et al. "Spontaneously Ruptured Hepatocellular Carcinoma: Computed Tomography-Based Assessment." Diagnostics 13, no. 6 (2023): 1021. http://dx.doi.org/10.3390/diagnostics13061021.

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Spontaneously ruptured hepatocellular carcinoma (SRHCC) is an uncommon and life-threatening complication in patients with hepatocellular carcinoma (HCC). It is usually associated with chronic liver disease and has a poor prognosis with a high mortality rate during the acute phase. SRHCC can cause a severe and urgent condition of acute abdomen disease and requires a correct diagnosis to achieve adequate treatment. Clinical presentation is related to the presence of hemoperitoneum, and abdominal pain is the most common symptom (66–100% of cases). Although the treatment approach is not unique, tr
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Guarnieri, Tommaso, Luciano Cardinale, Gianluca Macchia, Giancarlo Cortese, and Andrea Veltri. "Multiphasic Multidetector Computed Tomography Study of a Rare Tracheal Tumor: Granular Cell Tumor." Case Reports in Pulmonology 2014 (2014): 1–4. http://dx.doi.org/10.1155/2014/807430.

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Our aim is to present the case report of a woman affected by tracheal granular cell tumor analysed by multiphasic contrast-enhanced multidetector CT. The tumor presents as polypoid lesion (diameter 13 mm), with smooth and well-defined margins, elevated contrast enhancement in arterial phase, and a modest release of contrast in venous phase. This pattern is quite different from the other tracheal tumours. We have performed a comprehensive review of literature to assess all cases of granular cell tumors of the trachea; only 40 cases are reported. Of these, no one focused on the contrast enhancem
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Žvinienė, Kristina, Inga Zaborienė, Algidas Basevičius, and Juozas Pundzius. "Comparative diagnostic value of computed tomography and contrast-enhanced ultrasonography in diagnosis of focal liver lesions." Medicina 45, no. 10 (2009): 751. http://dx.doi.org/10.3390/medicina45100098.

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Objective. The aim of the study was to evaluate focal liver lesions by computed tomography and contrast-enhanced ultrasonography and to compare their diagnostic values. Materials and methods. There were 67 patients, examined and treated in the Departments of Gastroenterology, Surgery, and Oncology, Hospital of Kaunas University of Medicine, during 2007 (study group). All the patients underwent contrast-enhanced ultrasonography and bolus computed tomography. Control group included 73 patients with focal hepatic lesions who were examined and treated in the Hospital of Kaunas University of Medici
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Wang, Xing-Hua, Ying Shi, Huan-Hu Zhang, and Xia Ma. "Characteristics of Focal Liver Lesions in Arterial Phase on Contrast-enhanced Ultrasound and Contrast- -enhanced Computed Tomography – Comparative Study*." Advances in Clinical and Experimental Medicine 23, no. 1 (2014): 85–89. http://dx.doi.org/10.17219/acem/37027.

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Xin, Zhong, Xiangdang Long, Hongtian Chen, and Yongjun Hu. "The Imaging Performances of Contrast-Enhanced Ultrasound, Computed Tomography, and Magnetic Resonance Imaging for Extrahepatic Cholangiocarcinoma." Journal of Medical Imaging and Health Informatics 10, no. 9 (2020): 2192–97. http://dx.doi.org/10.1166/jmihi.2020.3162.

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Objective: To compare the imaging performances of contrast-enhanced ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI), thereby explore their values and significances in clinical practices of diagnosing extrahepatic cholangiocarcinoma. Methods: A total of 56 patients with extrahepatic cholangiocarcinoma were included as research objects. All the patients underwent contrast-enhanced ultrasound examination, enhanced MRI examination, and multi-slice helical CT (MSCT) examination. The major contents of analysis and observation included the location of the lesion, the range,
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Ren, Shuai, Ling Zhan, Shuchao Chen, et al. "Segmentation and Registration of the Liver in Dynamic Contrast-Enhanced Computed Tomography Images." Journal of Medical Imaging and Health Informatics 11, no. 3 (2021): 773–80. http://dx.doi.org/10.1166/jmihi.2021.3327.

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Dynamic contrast-enhanced computed tomography (DCE-CT) is the main auxiliary diagnostic tool for liver diseases. Liver segmentation and registration in all stages of DCE-CT images are the key technology for big data analysis of liver disease diagnosis. The change of imaging conditions in different stages of DCE-CT brings enormous challenges to the segmentation of liver CT images. This study proposes an automatic model for liver segmentation from abdominal CT images in different stages of DCE on the basis of U-Net. The skip connection in U-Net can improve the ability of complex feature recognit
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Kivisaari, L., P. Nuutinen, A. Lehtola, et al. "Ionic and Non-Ionic Contrast Media Used for Contrast-Enhanced Computed Tomography in Experimental Pancreatitis." Acta Radiologica 29, no. 2 (1988): 243–46. http://dx.doi.org/10.1177/028418518802900221.

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Contrast enhancement of the pancreas was studied in pigs using dynamic computed tomography in experimental oedematous and haemorrhagic/necrotizing pancreatitis during the first two minutes after injection of an intravenous bolus of non-ionic contrast medium (iohexol). The prospects of separating the two forms of the disease, known to be possible with ionic contrast media, were tested with a non-ionic contrast medium. In the oedematous form, contrast enhancement after 5 hours of the disease was significantly higher than in the haemorrhagic/necrotizing form. Contrast enhancement after 30 hours o
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Lehti, Leena, Marcus Söderberg, Peter Höglund, Ulf Nyman, Anders Gottsäter, and Johan Wassélius. "Reliability of virtual non-contrast computed tomography angiography: comparing it with the real deal." Acta Radiologica Open 7, no. 7-8 (2018): 205846011879011. http://dx.doi.org/10.1177/2058460118790115.

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Background Computed tomographic angiography (CTA) may require a non-contrast enhanced dataset for the diagnostic workup. By using dual-energy acquisition, it is possible to obtain a virtual non-contrast-enhanced (VNC) dataset, thereby possibly eliminating the non-contrast acquisition and reducing the radiation dose. Purpose To compare image quality of VNC images reconstructed from arterial phase dual-energy CTA to true non-contrast (TNC) images, and to assess whether VNC images were of sufficient quality to replace TNC images. Material and methods Thirty consecutive patients with suspected abd
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BADER, TILL R., RUPERT W. PROKESCH, and FLORIAN GRABENWÖGER. "Timing of the Hepatic Arterial Phase During Contrast-Enhanced Computed Tomography of the Liver." Investigative Radiology 35, no. 8 (2000): 486–92. http://dx.doi.org/10.1097/00004424-200008000-00005.

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Nakahashi, Kenta, Hiroyuki Oizumi, Hirohisa Kato, et al. "Venous phase contrast-enhanced computed tomography facilitates the detection of pulmonary venous tumor thrombus." General Thoracic and Cardiovascular Surgery 66, no. 8 (2018): 488–91. http://dx.doi.org/10.1007/s11748-018-0898-x.

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Jiang, Jian, Ke Wang, Yufeng Xu, et al. "Preoperative Assessment of Hepatocellular Carcinoma with Split-Bolus Combined Phase Contrast-Enhanced Computed Tomography." Medical Science Monitor 23 (April 16, 2017): 1834–41. http://dx.doi.org/10.12659/msm.904129.

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Liu, Hua, and Kang-Yan Zhao. "Application of CD34 expression combined with three-phase dynamic contrast-enhanced computed tomography scanning in preoperative staging of gastric cancer." World Journal of Gastrointestinal Surgery 15, no. 11 (2023): 2513–24. http://dx.doi.org/10.4240/wjgs.v15.i11.2513.

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BACKGROUND Accurate preoperative staging of gastric cancer (GC), a common malignant tumor worldwide, is critical for appropriate treatment plans and prognosis. Dynamic three-phase enhanced computed tomography (CT) scanning for preoperative staging of GC has limitations in evaluating tumor angiogenesis. CD34, a marker on vascular endothelial cell surfaces, is promising in evaluating tumor angiogenesis. We explored the value of their combination for preoperative staging of GC to improve the efficacy and prognosis of patients with GC. AIM To explore the evaluation value of CD34 expression + dynam
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Bignardi Jarretta, Georgea, Gabriela Silva Rodrigues, Fernanda D. M. F. Almeida, Cinthia Keiko Souto, Cibele Figueira Carvalho, and Daniel Salles. "The contribution of Computed Tomography, B-mode Ultrasound, Doppler and Contrast-Enhaced Ultrasound evaluation of hepatic focal lesions in dogs – review and a case report." Clínica Veterinária XXX, no. 177 (2025): 38–52. https://doi.org/10.46958/rcv.2012.2025.xxx.n.177.p.38-52.

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Hepatic focal lesions are common findings in dogs, especially in older patients, and they can be benign or malignant. Imaging diagnostic modalities, such as ultrasonography and computed tomography, are commonly used to identify and assess the morphology of these lesions. They can add information to narrow the diagnostic possibilities, regarding that even the histopathological procedure considered the gold-standard for definitive diagnostic, is not always possible in certain patients. The present report describes a male dog, Golden Retriever, 13 years-old, with history of liver masses detected
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Zhao, Yusen, Yaoyi Wang, Yuanbo Xu, et al. "Comparison of Diagnostic Value for Chronic Kidney Disease between 640-Slice Computed Tomography Kidney Scan and Conventional Computed Tomography Scan." Contrast Media & Molecular Imaging 2022 (August 24, 2022): 1–6. http://dx.doi.org/10.1155/2022/6587617.

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Objective. To explore the diagnostic value for chronic kidney disease (CKD) between 640-slice computed tomography (CT) kidney scan and conventional CT scan. Methods. A total of 120 CKD patients who received kidney plain scan plus enhanced examination in the CT room of the Medical Imaging Department of our hospital from June 2019 to September 2019 were selected and randomly divided into the experimental group (n = 60) and the control group (n = 60). Patients in the control group received the conventional CT plain scan and enhanced scan, and for patients in the experimental group, CT plain scan
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Kurita, Yusuke, Daisuke Utsunomiya, Kensuke Kubota, et al. "Diagnostic Value of Contrast-Enhanced Dual-Energy Computed Tomography in the Pancreatic Parenchymal and Delayed Phases for Pancreatic Cancer." Tomography 10, no. 10 (2024): 1591–604. http://dx.doi.org/10.3390/tomography10100117.

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Background/Objectives: The usefulness of dual-energy computed tomography (DECT) for low absorption in the parenchymal phase and contrast effects in the delayed phase for pancreatic cancer is not clear. Therefore, the diagnostic capability of low-KeV images obtained using DECT for pancreatic cancer in the pancreatic parenchymal and delayed phases was evaluated quantitatively and qualitatively. Methods: Twenty-five patients with pancreatic cancer who underwent contrast-enhanced DECT were included. A total of 50 and 70 KeV CT images, classified as low-keV and conventional CT-equivalent images, we
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Park, Se Jin, Haing-Woon Baik, Myung Hyun Cho, and Ju Hyung Kang. "Acute dural venous sinus thrombosis in a child with idiopathic steroid-dependent nephrotic syndrome: a case report." Childhood Kidney Diseases 26, no. 2 (2022): 101–6. http://dx.doi.org/10.3339/ckd.22.041.

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Nephrotic syndrome (NS) is a hypercoagulable state in which children are at risk of venous thromboembolism. A higher risk has been reported in children with steroid-resistant NS than in those with steroid-sensitive NS. The mortality rate of cerebral venous sinus thrombosis (CVST) is approximately 10% and generally results from cerebral herniation in the acute phase and an underlying disorder in the chronic phase. Our patient initially manifested as a child with massive proteinuria and generalized edema. He was treated with albumin replacement and diuretics, angiotensin-converting enzyme inhibi
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Kim, Yo Na, Ji Soo Song, Woo Sung Moon, Hong Pil Hwang, and Young Kon Kim. "Intra-individual comparison of hepatocellular carcinoma imaging features on contrast-enhanced computed tomography, gadopentetate dimeglumine-enhanced MRI, and gadoxetic acid-enhanced MRI." Acta Radiologica 59, no. 6 (2017): 639–48. http://dx.doi.org/10.1177/0284185117728534.

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Background Gadoxetic acid is being widely used for detection and characterization of hepatic nodules. However, there are no data regarding intra-individual comparison of imaging features of hepatocellular carcinoma (HCC) on dynamic computed tomography (CT), gadopentetate dimeglumine-enhanced magnetic resonance imaging (Gd-DTPA-MRI), and gadoxetic acid-enhanced MRI (Gd-EOB-MRI). Purpose To evaluate typical imaging features of HCC and capsule appearance with dynamic CT, Gd-DTPA-MRI, and Gd-EOB-MRI. Material and Methods We retrospectively reviewed 56 HCCs in 49 patients. Lesion attenuation/signal
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Khayrieva, A. V., N. V. Tarbaeva, M. V. Godzenko, et al. "The possibility of using virtual unenhanced images created by using dual-energy CT data in the differential diagnostic of adrenal tumors: a retrospective study." Diagnostic radiology and radiotherapy 16, no. 2 (2025): 56–63. https://doi.org/10.22328/2079-5343-2025-16-2-56-63.

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INTRODUCTION: Dual-energy computed tomography (DECT) is a computed tomography method based on scanning a patient at low and high energies, one of the features of which is the ability to create virtual unenhanced images based on datasets obtained after contrast injection.OBJECTIVE: Evaluation of the possibilities of using virtual unenhanced images created from arterial or venous phases by dualenergy computed tomography instead of native images in the differential diagnosis of adrenal gland tumors.MATERIALS AND METHODS: 91 patients with adrenal gland tumors who subsequently underwent surgery due
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Takaji, Ryo, Yasunari Yamada, Ryuichi Shimada, et al. "Retrospective evaluation of venous phase contrast-enhanced computed tomography images in patients who developed pancreatic adenocarcinomas after treatment for nonpancreatic primary cancer." BJR|Open 3, no. 1 (2021): 20200069. http://dx.doi.org/10.1259/bjro.20200069.

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Objectives: To clarify venous phase contrast-enhanced CT findings in early pancreatic adenocarcinomas by retrospectively evaluating CT images of pancreatic adenocarcinomas that developed during follow-up after treatment for non-pancreatic cancers. Methods: The study cohort comprised six patients who developed pancreatic adenocarcinomas between April 2005 and April 2020 during follow-up after treatment for non-pancreatic primary cancers. Two radiologists retrospectively evaluated CT images and reached consensus on previously reported CT findings that were suggestive of small pancreatic adenocar
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Koh, Teng Kiat, Jocelyn Zi Lin Ting, Bernard Wee, et al. "Coronary and arch hybrid surgery in a patient with infrarenal aortic occlusion." Asian Cardiovascular and Thoracic Annals 26, no. 2 (2018): 148–50. http://dx.doi.org/10.1177/0218492318755181.

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A 65-year-old gentleman with claudication underwent contrast-enhanced computed tomography. The scan showed occlusion of the infrarenal abdominal aorta and a 6.0 × 3.7 cm saccular zone-3 arch aneurysm. The left ventricular ejection fraction was 35% and a coronary angiogram revealed triple-vessel disease. In view of the patient’s high risk with EuroSCORE II 20.34%, coronary artery surgery was combined with hybrid type I arch aneurysm repair. An endovascular stent was delivered in an antegrade manner. Open heart surgery and a hybrid type I arch intervention can be performed simultaneously through
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Kong, Weihui, Yanjie Liu, Yueqin Chen, Linsheng Wang, Yuhong Wang, and Ti Gao. "Computed Tomography and Magnetic Resonance Imaging Findings and Differential Diagnosis of the Renal Oncocytoma." Journal of Medical Imaging and Health Informatics 10, no. 12 (2020): 2820–24. http://dx.doi.org/10.1166/jmihi.2020.3241.

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Objective: To discuss the imaging features of renal oncocytoma, and to improve the preoperative diagnostic accuracy. Methods: Radiology data of 16 renal oncocytoma patients were analyzed retrospectively. All the cases were confirmed by pathology. All patients underwent pre-contrast and multiple phase contrast scanning on multi-slice CT. The patients also underwent MRI examination. Results: All patients had solitary lesion, the location of oncocytoma were in right kidney (n = 9) and left kidney (n = 7). Round or round-like shape, clear boundary, protruding mass. Isodense or slightly higher dens
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Sekino, Hirofumi, Shiro Ishii, Yumi Saito, et al. "Aortomesenteric angle: A contrast-enhanced computed tomography analysis of respiratory phase and visceral fat impact." Journal of Clinical Imaging Science 15 (January 6, 2025): 2. https://doi.org/10.25259/jcis_65_2024.

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Objectives: The objective of this study was to evaluate the relationship between the aortomesenteric angle at end-inspiration and end-expiration and its variation rate with several anthropometric parameters. Material and Methods: Sagittal reconstructed computed tomography (CT) images of 59 patients who underwent contrast-enhanced CT at end-inspiration and end-expiration between 2015 and 2020 were reviewed. All these patients underwent dynamic contrast CT during both inspiration and expiration for adrenal venous sampling purposes. Two experienced radiologists measured the aortomesenteric angle
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Jiang, Changqin, Lianfang Shen, Lichao Xia, et al. "Mixed Imaging on Port-Venous Phase of Contrast-Enhanced Dual-Source Dual-Energy Computed Tomography." Journal of Computer Assisted Tomography 42, no. 6 (2018): 944–53. http://dx.doi.org/10.1097/rct.0000000000000820.

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Noda, Yoshifumi, Nobuyuki Kawai, Takuma Ishihara, et al. "Optimized scan delay for late hepatic arterial or pancreatic parenchymal phase in dynamic contrast-enhanced computed tomography with bolus-tracking method." British Journal of Radiology 94, no. 1122 (2021): 20210315. http://dx.doi.org/10.1259/bjr.20210315.

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Objectives: To determine the optimal scan delay corresponding to individual hemodynamic status for pancreatic parenchymal phase in dynamic contrast-enhanced CT of the abdomen. Methods: One hundred and fourteen patients were included in this retrospective study (69 males and 45 females; mean age, 67.9 ± 12.1 years; range, 39–87 years). These patients underwent abdominal dynamic contrast-enhanced CT between November 2019 and May 2020. We calculated and recorded the time from contrast material injection to the bolus-tracking trigger of 100 Hounsfield unit (HU) at the abdominal aorta (s) (TimeTRIG
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Shin, Dong Woo, Jaewon Park, Jong-Chan Lee, Jaihwan Kim, Young Hoon Kim, and Jin-Hyeok Hwang. "Multi-Phase, Contrast-Enhanced Computed Tomography-Based Radiomic Prognostic Marker of Non-Metastatic Pancreatic Ductal Adenocarcinoma." Cancers 14, no. 10 (2022): 2476. http://dx.doi.org/10.3390/cancers14102476.

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Background/Aim: This study investigated the predictive ability of intra-tumor enhancement on computed tomography (CT) for the outcomes of patients with pancreatic ductal adenocarcinoma (PDA). Methods: Multi-phase, contrast-enhanced CT (including unenhanced, pancreatic parenchymal phase (PPP) and portal venous phase (PVP)) images of patients diagnosed with non-metastatic PDA were analyzed to investigate prognostic factors. Results: Two hundred ninety-eight patients with PDA (159 with resectable pancreatic cancer (RPC) and 139 with borderline resectable pancreatic cancer (BRPC)/locally advanced
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Lombardo, Michael, Martin Schneebeli, and Henning Löwe. "A casting method using contrast-enhanced diethylphthalate for micro-computed tomography of snow." Journal of Glaciology 67, no. 265 (2021): 847–61. http://dx.doi.org/10.1017/jog.2021.35.

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AbstractCasting snow is necessary to prevent metamorphism and deformation prior to X-ray micro-computed tomography (μCT) imaging. Current methods are insufficient for large-scale field sampling of snow due to safety considerations associated with the casting medium and/or lengthy sample preparation times. Here, a casting method using contrast-enhanced diethylphthalate (DEP) for μCT of snow is presented. The X-ray contrast of DEP is enhanced with barium titanate nanoparticles (BaTiO3) and iodine (I2). A partially unsupervised, three-phase segmentation method utilizing traditional Gaussian smoot
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Ibrahim, Abdalla, Siddharth Guha, Lin Lu, et al. "The reproducibility and predictivity of radiomic features extracted from dynamic contrast-enhanced computed tomography of hepatocellular carcinoma." PLOS ONE 19, no. 9 (2024): e0310486. http://dx.doi.org/10.1371/journal.pone.0310486.

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Purpose To assess the reproducibility of radiomic features (RFs) extracted from dynamic contrast-enhanced computed tomography (DCE-CT) scans of patients diagnosed with hepatocellular carcinoma (HCC) with regards to inter-observer variability and acquisition timing after contrast injection. The predictive ability of reproducible RFs for differentiating between the degrees of HCC differentiation is also investigated. Methods We analyzed a set of DCE-CT scans of 39 patients diagnosed with HCC. Two radiologists independently segmented the scans, and RFs were extracted from each sequence of the DCE
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Suttichaimongkol, Tanita, Kawin Tangvoraphonkchai, and Arin Pisanuwongse. "Mass-forming cholangiocarcinoma." Thai Journal of Hepatology 2, no. 1 (2019): 15–17. http://dx.doi.org/10.30856/h.jhep2019vol2iss1_05.

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Cholangiocarcinoma is the second most common primary liver cancers. It is arising from epithelial cells of the biliary tract. It has been categorized to intrahepatic and extrahepatic. The Intrahepatic orperipheral cholangiocarcinoma can be presented as mass-forming, periductal infiltrating and intraductal growth. Many patients of mass-forming cholangiocarcinoma have symptoms such as abdominal pain about 85% but some patients don’t have any symptoms. This is the difficult cancer to diagnose. While patients were having any symptom, the disease was an advanced stage (unresectable). The diagnostic
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Honkanen, Miitu K. M., Annina E. A. Saukko, Mikael J. Turunen, et al. "Triple Contrast CT Method Enables Simultaneous Evaluation of Articular Cartilage Composition and Segmentation." Annals of Biomedical Engineering 48, no. 2 (2019): 556–67. http://dx.doi.org/10.1007/s10439-019-02362-6.

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Abstract Early degenerative changes of articular cartilage are detected using contrast-enhanced computed tomography (CT) with a cationic contrast agent (CA). However, cationic CA diffusion into degenerated cartilage decreases with proteoglycan depletion and increases with elevated water content, thus hampering tissue evaluation at early diffusion time points. Furthermore, the contrast at synovial fluid-cartilage interface diminishes as a function of diffusion time hindering accurate cartilage segmentation. For the first time, we employ quantitative dual-energy CT (QDECT) imaging utilizing a mi
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Zouraq, Sara Azzabi, N. Bouardi, M. Haloua, et al. "Anterior Mediastinal Capillary Hemangioma: A Very Rare Finding." Scholars Journal of Medical Case Reports 11, no. 05 (2023): 831–34. http://dx.doi.org/10.36347/sjmcr.2023.v11i05.022.

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Hemangiomas are benign vascular tumors. Their location in the mediastinum represents a very rare finding. The definite diagnosis is sometimes difficult to make due to nonspecific features on single-phase contrast-enhanced computed tomography (CT) images. Our case shows a 53-year-old male that had presented with chest pain and dyspnea. On the dynamic CT study, there was a mediastinal mass that showed peripheral nodular enhancement on early phase images and progressive centripetal fill-in on delayed phase images. Hemangioma was preoperatively diagnosed on the basis of this characteristic CT appe
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Li, Ruimin, Hualei Gan, Shujuan Ni, Yi Fu, Hui Zhu, and Weijun Peng. "Differentiation of Gastric Schwannoma From Gastric Gastrointestinal Stromal Tumor With Dual-Phase Contrast-Enhanced Computed Tomography." Journal of Computer Assisted Tomography 43, no. 5 (2019): 741–46. http://dx.doi.org/10.1097/rct.0000000000000902.

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