Academic literature on the topic 'Patient-specific phantom'

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Journal articles on the topic "Patient-specific phantom"

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Yin, Jun, Manqi Li, Guangli Dai, Hongzhao Zhou, Liang Ma, and Yixiong Zheng. "3D Printed Multi-material Medical Phantoms for Needle-tissue Interaction Modelling of Heterogeneous Structures." Journal of Bionic Engineering 18, no. 2 (2021): 346–60. http://dx.doi.org/10.1007/s42235-021-0031-1.

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AbstractThe fabrication of multi-material medical phantoms with both patient-specificity and realistic mechanical properties is of great importance for the development of surgical planning and medical training. In this work, a 3D multi-material printing system for medical phantom manufacturing was developed. Rigid and elastomeric materials are firstly combined in such application for an accurate tactile feedback. The phantom is designed with multiple layers, where silicone ink, Thermoplastic Polyurethane (TPU), and Acrylonitrile Butadiene Styrene (ABS) were chosen as printing materials for ski
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Radojcic, Đeni Smilovic, David Rajlic, Bozidar Casar, et al. "Evaluation of two-dimensional dose distributions for pre-treatment patient-specific IMRT dosimetry." Radiology and Oncology 52, no. 3 (2018): 346–52. http://dx.doi.org/10.2478/raon-2018-0019.

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Abstract Background The accuracy of dose calculation is crucial for success of the radiotherapy treatment. One of the methods that represent the current standard for patient-specific dosimetry is the evaluation of dose distributions measured with an ionization chamber array inside a homogeneous phantom using gamma method. Nevertheless, this method does not replicate the realistic conditions present when a patient is undergoing therapy. Therefore, to more accurately evaluate the treatment planning system (TPS) capabilities, gamma passing rates were examined for beams of different complexity pas
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Carbone, Marina, Rosanna Maria Viglialoro, Sara Stagnari, et al. "Design, Fabrication, and Preliminary Validation of Patient-Specific Spine Section Phantoms for Use in Training Spine Surgeons Outside the Operating Room/Theatre." Bioengineering 10, no. 12 (2023): 1345. http://dx.doi.org/10.3390/bioengineering10121345.

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Pedicle screw fixation (PSF) demands rigorous training to mitigate the risk of severe neurovascular complications arising from screw misplacement. This paper introduces a patient-specific phantom designed for PSF training, extending a portion of the learning process beyond the confines of the surgical room. Six phantoms of the thoracolumbar region were fabricated from radiological datasets, combining 3D printing and casting techniques. The phantoms were employed in three training sessions by a fifth-year resident who performed full training on all six phantoms; he/she placed a total of 57 pedi
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Wilson, Lydia J., Sara Belko, Eric Gingold, et al. "3D-Printed Organ-Realistic Phantoms to Verify Quantitative SPECT/CT Accuracy for 177Lu-PSMA-617 Treatment Planning." Pharmaceuticals 18, no. 4 (2025): 550. https://doi.org/10.3390/ph18040550.

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Background/Objectives: Accurate patient-specific dosimetry is essential for optimizing radiopharmaceutical therapy (RPT), but current tools lack validation in clinically realistic conditions. This work aimed to develop a workflow for designing and fabricating patient-derived, organ-realistic RPT phantoms and evaluate their feasibility for commissioning patient-specific RPT radioactivity quantification. Methods: We used computed tomographic (CT) and magnetic resonance (MR) imaging of representative patients, computer-aided design, and in-house 3D printing technology to design and fabricate anth
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Takahashi, Wataru, Shota Oshikawa, and Shinichiro Mori. "Real-time markerless tumour tracking with patient-specific deep learning using a personalised data generation strategy: proof of concept by phantom study." British Journal of Radiology 93, no. 1109 (2020): 20190420. http://dx.doi.org/10.1259/bjr.20190420.

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Objective: For real-time markerless tumour tracking in stereotactic lung radiotherapy, we propose a different approach which uses patient-specific deep learning (DL) using a personalised data generation strategy, avoiding the need for collection of a large patient data set. We validated our strategy with digital phantom simulation and epoxy phantom studies. Methods: We developed lung tumour tracking for radiotherapy using a convolutional neural network trained for each phantom’s lesion by using multiple digitally reconstructed radiographs (DRRs) generated from each phantom’s treatment planning
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Kollitz, Erika, Haegin Han, Chan Hyeong Kim, et al. "A patient-specific hybrid phantom for calculating radiation dose and equivalent dose to the whole body." Physics in Medicine & Biology 67, no. 3 (2022): 035005. http://dx.doi.org/10.1088/1361-6560/ac4738.

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Abstract Objective. As cancer survivorship increases, there is growing interest in minimizing the late effects of radiation therapy such as radiogenic second cancer, which may occur anywhere in the body. Assessing the risk of late effects requires knowledge of the dose distribution throughout the whole body, including regions far from the treatment field, beyond the typical anatomical extent of clinical computed tomography (CT) scans. Approach. A hybrid phantom was developed which consists of in-field patient CT images extracted from ground truth whole-body CT scans, out-of-field mesh phantoms
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Yoon, K., C. Jeong, M. Park, et al. "P03.07.B DOSIMETRIC ACCURACY OF CYBERKNIFE STEREOTACTIC RADIOSURGERY FOR BENIGN PERIOPTIC TUMOR." Neuro-Oncology 25, Supplement_2 (2023): ii37—ii38. http://dx.doi.org/10.1093/neuonc/noad137.118.

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Abstract BACKGROUND The Cyberknife (CK) SRS delivers a highly focused ablative radiation dose to tumors to effectively control tumors with minimized radiation toxicity to surrounding normal tissues. This study aimed to evaluate the dosimetric accuracy of Cyberknife (CK) for benign perioptic tumor using patient specific head phantom. METHODS Patient specific head phantoms was fabricated using a 3D-printer to be dosimetrically equivalent to actual target regions of benign perioptic tumor case treated via Cyberknife radiosurgery. Head phantom QA plan was produced using the original CK contour set
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Cagni, Elisabetta, Andrea Botti, Matteo Orlandi, et al. "Evaluating the Quality of Patient-Specific Deformable Image Registration in Adaptive Radiotherapy Using a Digitally Enhanced Head and Neck Phantom." Applied Sciences 12, no. 19 (2022): 9493. http://dx.doi.org/10.3390/app12199493.

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Despite the availability of national and international guidelines, an accurate and efficient, patient-specific, deformable image registration (DIR) validation methodology is not yet established, and several groups have found an incompatibility of the various digital phantoms with the commercial systems. To evaluate the quality of the computed tomography (CT) and on-board cone-beam CT (CBCT) DIRs, a novel methodology was developed and tested on 10 head and neck (HN) patients, using CT and CBCT anthropomorphic HN phantom images, digitally reprocessed to include the common organs at risk. Referen
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Hütter, Larissa, Patrick H. Geoghegan, Paul D. Docherty, Milad S. Lazarjan, Donald Clucas, and Mark Jermy. "Fabrication of a compliant phantom of the human aortic arch for use in Particle Image Velocimetry (PIV) experimentation." Current Directions in Biomedical Engineering 2, no. 1 (2016): 493–97. http://dx.doi.org/10.1515/cdbme-2016-0109.

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AbstractCompliant phantoms of the human aortic arch can mimic patient specific cardiovascular dysfunctions in vitro. Hence, phantoms may enable elucidation of haemodynamic disturbances caused by aortic dysfunction. This paper describes the fabrication of a thin-walled silicone phantom of the human ascending aorta and brachiocephalic artery. The model geometry was determined via a meta-analysis and modelled in SolidWorks before 3D printing. The solid model surface was smoothed and scanned with a 3D scanner. An offset outer mould was milled from Ebalta S-Model board. The final phantom indicated
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Ehler, Eric D., Brett M. Barney, Patrick D. Higgins, and Kathryn E. Dusenbery. "Patient specific 3D printed phantom for IMRT quality assurance." Physics in Medicine and Biology 59, no. 19 (2014): 5763–73. http://dx.doi.org/10.1088/0031-9155/59/19/5763.

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Dissertations / Theses on the topic "Patient-specific phantom"

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Courtial, Edwin-Joffrey. "Élaboration de matériaux silicone au comportement mécanique adapté pour la réalisation de fantômes aortiques patients-spécifiques." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10023/document.

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Le travail présenté dans ce manuscrit concerne la fabrication de fantômes d'aorte patient spécifiques utilisant une technique de fabrication additive par impression 3D. Ces répliques sont fabriquées en matériaux synthétiques dont les caractéristiques morphologiques et les propriétés mécaniques doivent être proches de celles déterminées sur un patient. Elles permettent d'optimiser ou de développer les techniques d'imagerie médicale, de comprendre les relations entre le comportement mécanique de la paroi aortique et les caractéristiques hémodynamiques du flux sanguin mais aussi de réaliser des e
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Book chapters on the topic "Patient-specific phantom"

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Mehranian, A., M. R. Ay, and H. Zaidi. "CT2MCNP: An Integrated Package for Constructing Patient-Specific Voxel-Based Phantoms Dedicated for MCNP(X) Monte Carlo Code." In XII Mediterranean Conference on Medical and Biological Engineering and Computing 2010. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13039-7_80.

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"Anthropomorphic breast phantom production with 3D printer technique to find more accurate factors for average glandular dose calculation." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.19.3.

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According to World Cancer Research Fund International, breast cancer is the 2nd common cancer type worldwide and 1st type among women. To diagnose breast cancer, mammography (MG) and digital breast tomosynthesis (DBT) are commonly preferred imaging methods. Radiotherapy is one of the treatment methods of breast cancer and in case of radiotherapy is preferred, breast computed tomography (B-CT) is taken for breast contouring which is essential for radiotherapy. Mammography (MG), digital breast tomosynthesis (DBT) and breast computed tomography (B-CT) are medical imaging techniques using ionizing
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"Comparison of patient specific quality assurance (PSQA) results for trigeminal neuralgia (TN) patients receiving CyberKnife stereotactic radiosurgery." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.19.4.

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Trigeminal neuralgia (TN) is a chronic condition that causes severe, shock-like pain on one side of the face. In its most severe form, it can be so debilitating that it is often referred to as the "suicide disease." The first-line treatment for TN is medication, but if symptoms persist despite medication, surgical options are considered. CyberKnife (CK) stereotactic radiosurgery (SRS) is an effective treatment that targets and destroys specific trigeminal nerve fibers using multiple precisely-shaped beams of ionizing radiation from a linear accelerator mounted on a robotic arm. Treatment utili
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Chui Chee-Kong, Li Zirui, Anderson James H., et al. "Training and Pretreatment Planning of Interventional Neuroradiology Procedures – Initial Clinical Validation." In Studies in Health Technology and Informatics. IOS Press, 2002. https://doi.org/10.3233/978-1-60750-929-5-96.

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A PC based system for simulating image-guided interventional neuroradiological procedures for physician training and patient specific pretreatment planning is described. The system allows physicians to manipulate and interface interventional devices such as catheters, guidewires, stents and coils within 2-D and hybrid surface and volume rendered 3-D patient vascular images in real time. A finite element method is employed to model the interaction of the catheters and guidewires with the vascular system. Fluoroscopic, roadmapping and volume rendered 3-D presentations of the vasculature are prov
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"Investigation of the Effect of photon energy and number on dose in CT scan." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.18.5.

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With the development of Computed Tomography (CT) technology, its use is increasing in other departments such as radiotherapy clinics, despite the risk of low-dose radiation. However, the specific stochastic risks of low-dose ionizing radiation cannot be certainly determined. Therefore, it may be necessary to estimate the radiation dose that patients are exposed to during a CT scan. The most important quantity for estimating the risk from imaging procedures is the radiation dose absorbed by each organ, which can be calculated by classical methods or by computer codes. Various computer codes can
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"Phantom Limbs And Plasticity: Merleau-Ponty And Current Neurobiology." In Plasticity, edited by Tyler M. Williams. Edinburgh University Press, 2022. http://dx.doi.org/10.3366/edinburgh/9781474462112.003.0025.

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It seems that with the most recent neurobiological discoveries concerning bodily motility, we are witnessing the emergence of a new meaning of the word ‘meaning’. To what extent is this new new meaning indebted to Merleau-Ponty? To what extent is it not? At first sight, as it is practically always the case, the confrontation between the domain of continental philosophy and that of strict neurobiology seems unbalanced. In the first part of the presentation, I will show that the current neurobiological meaning of the word meaning appears to be apparently poorer and much less differentiated than
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Hamid Zoljalali Moghaddam, Seyed. "Applications of Three-Dimensional Printing Technology in Radiotherapy." In Advances in 3D Printing. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109398.

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Nowadays, three-dimensional (3D) printing technology has been used for rapid prototyping of high quality printed objects. This technology has taken a special place in the field of medicine, and today this technology plays an important role, especially in the field of radiotherapy. Radiotherapy is a main option for treating and management of various types of cancers. Personalized radiotherapy requires precise details. For this reason, it is very important to carry out the exact treatment design at the clinical. 3D printing technology is considered a promising method that can be effective in the
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Shamsabadi, Reza. "3D-Printing Advances in Radiotherapy." In Advances in 3D Printing. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109153.

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As radiotherapy techniques have been becoming more applied in medicine, the success of radiotherapy treatment lies in an optimal radiation dosage distribution in tumor as well as dose limitation to the normal tissues. Accordingly, the application of three-dimensional (3D) printing technology, as an additive manufacturing (AM) process in radiotherapy technique, is proliferating rapidly due to the reduced manufacturing costs, improved printing precision, and the speed of 3D printers. The advent of 3D printers in medical fields, especially in radiotherapy, allows to produce any given specific des
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Ma, C. "Applications to Patient-Specific Voxel Computational Phantoms in EGS Monte Carlo Codes for Radiation Treatment Involving Photons and Electrons." In Handbook of Anatomical Models for Radiation Dosimetry. Taylor & Francis, 2009. http://dx.doi.org/10.1201/ebk1420059793-c28.

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A. Verganelakis, Dimitris, and Maria Lyra-Georgosopoulou. "Nuclear Medicine Dosimetry in Paediatric Population." In Dosimetry [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105346.

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Nowadays, the value of paediatric nuclear diagnostic medical imaging has been well established within the medical community. Despite decades of nuclear medicine practice, studies in nuclear medicine to achieve the lowest possible radiation dose to the patient while ensuring the optimized image quality have to be continued. Numerous studies highlighted a long list of objectives, in order to obtain the minimum possible absorbed dose, achieve short scan times and generate images with a high signal to noise ratio (SNR) and spatial/temporal resolution. For the development of guidelines, it is neces
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Conference papers on the topic "Patient-specific phantom"

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Park, Changmin, Sihwan Kim, and Jonghyo Kim. "Noise power spectrum analysis in CT for improved patient-specific image optimization: a shift from phantom model to clinical scan." In Physics of Medical Imaging, edited by John M. Sabol, Shiva Abbaszadeh, and Ke Li. SPIE, 2025. https://doi.org/10.1117/12.3046950.

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Schregle, Robin, Felix Pancheri, Yilun Sun, and Tim C. Lueth. "Creation of Large-Size 3D-printed Patient Specific Phantoms for Training in Robotic Surgery." In 2024 IEEE International Conference on Robotics and Biomimetics (ROBIO). IEEE, 2024. https://doi.org/10.1109/robio64047.2024.10907324.

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Mondal, Parmita, Kyle A. Williams, Parisa Naghdi, et al. "Exploring injection bias reduction techniques in quantitative angiography using patient-specific phantoms of intracranial aneurysm with diverse morphologies and locations." In Clinical and Biomedical Imaging, edited by Barjor S. Gimi and Andrzej Krol. SPIE, 2025. https://doi.org/10.1117/12.3045246.

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Juszczyk, Jan, Bartlomiej Pycinski, and Ewa Pietka. "Patient Specific Phantom in bimodal image navigation system." In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2015. http://dx.doi.org/10.1109/embc.2015.7319000.

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O’Hara, Ryan P., Gary Iacobucci, Megan Russ, and Ciprian Ionita. "Manufacturing Patient-Specific Phantoms to Treat Aneurysms Using Rotational Angiography and 3-D Modeling." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35693.

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The purpose of this study is to manufacture a patient-specific phantom containing multiple aneurysms that can be observed and tested to determine the need for interventional treatment. The vasculatures for the phantoms are taken from unhealthy individuals using rotational angiography as part of a stroke study. Different neurovascular sections exhibiting aneurysms from five patients were combined into a single Circle of Willis with 3D modeling software. Physicians and investigators can use this phantom to test treatment options, such as catheter interventions involving stents and coils.
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Horn, Marina, Benjamin Reh, Frederik Wenz, Jan Stallkamp, and Katja Mombaur. "Patient specific corotated FEM simulation and gelatin phantom for prostate brachytherapy." In 2016 6th IEEE International Conference on Biomedical Robotics and Biomechatronics (BioRob). IEEE, 2016. http://dx.doi.org/10.1109/biorob.2016.7523649.

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Ionita, Ciprian N., Maxim Mokin, Nicole Varble, et al. "Challenges and limitations of patient-specific vascular phantom fabrication using 3D Polyjet printing." In SPIE Medical Imaging, edited by Robert C. Molthen and John B. Weaver. SPIE, 2014. http://dx.doi.org/10.1117/12.2042266.

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Malinowski, K., C. Noel, W. Lu, et al. "Development of the 4D Phantom for patient-specific, end-to-end radiation therapy QA." In Medical Imaging, edited by Jiang Hsieh and Michael J. Flynn. SPIE, 2007. http://dx.doi.org/10.1117/12.713841.

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Faber, Tracy L., Ernest V. Garcia, David S. Lalush, W. Paul Segars, and Benjamin M. Tsui. "Simulating patient-specific heart shape and motion using SPECT perfusion images with the MCAT phantom." In Medical Imaging 2001, edited by Seong K. Mun. SPIE, 2001. http://dx.doi.org/10.1117/12.428050.

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Liu, Yang, Yihao Zheng, John Pitre, William Weitzel, Joseph Bull, and Albert Shih. "Manufacturing and Computational Fluid Dynamics Modeling of a Patient-Specific Fistula Model." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-3002.

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Arteriovenous fistula is the joining of an artery to a vein to create vascular access for dialysis. The failure or maturation of fistula is affected by the vessel wall shear stress (WSS), which is difficult to measure in clinic. A computational fluid dynamics (CFD) model was built to estimate WSS of a patient-specific fistula model. To validate this model, a silicone phantom was manufactured and used to carry out a particle imaging velocimetry (PIV) experiment. The flow field from the PIV experiment shows a good agreement with the CFD model. From the CFD model, the highest WSS (40 Pa) happens
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Reports on the topic "Patient-specific phantom"

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MR (Diffusion-Weighted Imaging (DWI) of the Apparent Diffusion Coefficient (ADC), Clinically Feasible Profile. Chair Michael Boss, Dariya Malyarenko, and Daniel Margolis. Radiological Society of North America (RSNA) / Quantitative Imaging Biomarkers Alliance (QIBA), 2022. http://dx.doi.org/10.1148/qiba/20221215.

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The goal of a QIBA Profile is to help achieve a useful level of performance for a given biomarker. The Claim (Section 2) describes the biomarker performance and is derived from the body of scientific literature meeting specific requirements, in particular test-retest studies. The Activities (Section 3) contribute to generating the biomarker. Requirements are placed on the Actors that participate in those activities as necessary to achieve the Claim. Assessment Procedures (Section 4) for evaluating specific requirements are defined as needed to ensure acceptable performance. Diffusion-Weighted
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Ultrasound Measurement of Shear Wave Speed for Estimation Liver Fibrosis, Clinically Feasible Profile. Chair David Fetzer, Stephen McAleavey, and Stephen Rosenzweig. Radiological Society of North America (RSNA) / Quantitative Imaging Biomarkers Alliance (QIBA), 2024. http://dx.doi.org/10.1148/qiba/20240115.

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The goal of a QIBA Profile is to help achieve a useful level of performance for a given biomarker. Profile development is an evolutionary, phased process; this Profile is in the “Clinically Feasible” (formerly “Technically Confirmed") stage. The performance claims represent expert consensus and will be empirically demonstrated at a subsequent stage. Several sites have performed the profile, found it to be practical, and expect it to achieve the claimed performance. Users of this Profile are encouraged to refer to the following site to understand the document’s context: http://qibawiki.rsna.org
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CT Lung Densitometry, Consensus QIBA Profile. Chair Charles Hatt and Miranda Kirby. • The Publisher is Radiological Society of North America (RSNA)/Quantitative Imaging Biomarkers Alliance (QIBA), 2020. https://doi.org/10.1148/qiba/20200904.

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The goal of a QIBA Profile is to achieve a repeatable and useful level of performance for measures of lung density from quantitative CT using the RA-950 HU and Perc15 biomarkers of emphysema. Please see Appendix C for more detailed information on the calculation of and rationale for RA-950 HU and Perc15 as the biomarkers of choice. The Claim (Section 2) describes the performance in terms of bias and precision of RA-950 HU and Perc15 for detecting change in lung density. The Activities (Section 3) describe how to generate RA-950 HU and Perc15 for longitudinal studies of the change in lung densi
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