Academic literature on the topic 'RF/microwave ablation'

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Journal articles on the topic "RF/microwave ablation"

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Schramm, Wolfgang, Deshan Yang, Bradford J. Wood, Frank Rattay, and Dieter Haemmerich. "Contribution of Direct Heating, Thermal Conduction and Perfusion During Radiofrequency and Microwave Ablation." Open Biomedical Engineering Journal 1, no. 1 (2007): 47–52. http://dx.doi.org/10.2174/1874120700701010047.

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Both radiofrequency (RF) and microwave (MW) ablation devices are clinically used for tumor ablation. Several studies report less dependence on vascular mediated cooling of MW compared to RF ablation. We created computer models of a cooled RF needle electrode, and a dipole MW antenna to determine differences in tissue heat transfer. We created Finite Element computer models of a RF electrode (Cooled needle, 17 gauge), and a MW antenna (Dipole, 13 gauge). We simulated RF ablation for 12 min with power controlled to keep maximum tissue temperature at 100 ºC, and MW ablation for 6 min with 75 W of
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Swanson, David K., Wendel J. Smith, Tamer Ibrahim, and Andrew S. Wechsler. "Tissue Temperature Feedback Control of Power the Key to Successful Ablation." Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery 6, no. 4 (2011): 276–82. http://dx.doi.org/10.1097/imi.0b013e31822b4d22.

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Multiple ablation technologies are used to treat atrial fibrillation during cardiac operations. All such ablation technologies use locally induced temperature extremes (>50°C or −20°C) to kill tissue and create a lesion pattern in the atria which blocks activation pathways that initiate and sustain atrial fibrillation. The technologies used to heat tissue have included radiofrequency (RF), microwave, high-intensity focused ultrasound, and infrared laser. RF accounts for more than 95% of the heating-based ablation technology used by cardiac surgeons. Energy delivery with RF is easier to cont
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Zhou, Zhuhuang, Yue Wang, Shuang Song, Weiwei Wu, Shuicai Wu, and Po-Hsiang Tsui. "Monitoring Microwave Ablation Using Ultrasound Echo Decorrelation Imaging: An ex vivo Study." Sensors 19, no. 4 (2019): 977. http://dx.doi.org/10.3390/s19040977.

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In this study, a microwave-induced ablation zone (thermal lesion) monitoring method based on ultrasound echo decorrelation imaging was proposed. A total of 15 cases of ex vivo porcine liver microwave ablation (MWA) experiments were carried out. Ultrasound radiofrequency (RF) signals at different times during MWA were acquired using a commercial clinical ultrasound scanner with a 7.5-MHz linear-array transducer. Instantaneous and cumulative echo decorrelation images of two adjacent frames of RF data were calculated. Polynomial approximation images were obtained on the basis of the thresholded c
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Lee, Jeong Kyong, Surachate Siripongsakun, Simin Bahrami, Steven S. Raman, James Sayre, and David S. Lu. "Microwave ablation of liver tumors: degree of tissue contraction as compared to RF ablation." Abdominal Radiology 41, no. 4 (2016): 659–66. http://dx.doi.org/10.1007/s00261-016-0725-8.

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Briot, Antoine, Germain Brehier, Anaïs Jaillais, et al. "Efficacy of Monopolar Radiofrequency or Microwave Ablation in Intrahepatic Cholangiocarcinoma: A Retrospective Multicenter Study from Association des Gastro-Entérologues Oncologues (AGEO)." Cancers 16, no. 22 (2024): 3838. http://dx.doi.org/10.3390/cancers16223838.

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Background: Several locoregional treatments approaches, including thermoablation, have been tested for the treatment of intrahepatic cholangiocarcinoma (ICC) and have shown encouraging results. However, data are heterogeneous in terms of tumor number, size, and ablation technique. Objective: The aim of this study was to investigate the efficacy and prognostic factors in ICC treated by monopolar radiofrequency (RF) or microwave ablation (MW). Methods: This was a retrospective study including patients treated with RF or MW for ICC in six participating centers. DFS and OS were evaluated by the Ka
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Ierardi, Anna Maria, Valeria Savasi, Salvatore Alessio Angileri, et al. "Percutaneous High Frequency Microwave Ablation of Uterine Fibroids: Systematic Review." BioMed Research International 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/2360107.

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Uterine fibroids are the most common benign pelvic tumor of the female genital tract and tend to increase with age; they cause menorrhagia, dysmenorrhea, pelvic pressure symptoms, back pain, and subfertility. Currently, the management is based mainly on medical or surgical approaches. The nonsurgical and minimally invasive therapies are emerging approaches that to the state of the art include uterine artery embolization (UAE), image-guided thermal ablation techniques like magnetic resonance-guided focused ultrasound surgery (MRgFUS) or radiofrequency ablation (RF), and percutaneous microwave a
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Salman, Muhammad, Anwaar Ellahi, and Syed Wilayat Hussain. "Improvement in Absorption of Microwaves by Incorporating Additives in Silica Phenolic Composite." Key Engineering Materials 778 (September 2018): 200–205. http://dx.doi.org/10.4028/www.scientific.net/kem.778.200.

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A method of adding RAM directly in silica phenolic composite was tested. Due to direct incorporation of RAM, the resultant composite not only can show microwave absorption at normal conditions but can sustain this capability at high heat fluxes. Such RAM added composite becomes more applicable for materials which are exposed to high temperatures. Two different RAM added silica fibre phenolic composites were developed and their RF-absorptions were compared with pure silica fibre phenolic sample. It was found that depending on the type of RAM their RF-absorption can be enhanced. Strength and abl
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KORUTH, JACOB S., SRINIVAS DUKKIPATI, SANDEEP GANGIREDDY, et al. "Occurrence of Steam Pops During Irrigated RF Ablation: Novel Insights from Microwave Radiometry." Journal of Cardiovascular Electrophysiology 24, no. 11 (2013): 1271–77. http://dx.doi.org/10.1111/jce.12181.

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Mimmo, Antonio, Francesca Pegoraro, Rami Rhaiem, et al. "Microwave Ablation for Colorectal Liver Metastases: A Systematic Review and Pooled Oncological Analyses." Cancers 14, no. 5 (2022): 1305. http://dx.doi.org/10.3390/cancers14051305.

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(1) Background: colorectal liver metastases (CRLM) are the most common extra-lymphatic metastases in colorectal cancer; however, few patients are fit for curative surgery. Microwave ablation (MWA) showed promising outcomes in this cohort of patients. This systematic review and pooled analysis aimed to analyze the oncological results of MWA for CRLM. (2) Methods: Following PRISMA guidelines, PubMed, Scopus, EMBASE, Google Scholar, Science Direct, and the Wiley Online Library databases were searched for reports published before January 2021. We included papers assessing MWA, treating resectable
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Janikashvili, Nona, Kumar Jayant, Nino Kikodze, et al. "Immunomodulatory Changes Following Isolated RF Ablation in Colorectal Liver Metastases: A Case Report." Medicines 6, no. 2 (2019): 56. http://dx.doi.org/10.3390/medicines6020056.

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Background: Colorectal cancer (CRC) is the third most common cancer worldwide and the second leading cause of cancer-related deaths in developed countries. The liver is the most prevalent site of metastasis from CRC. Currently, the gold-standard treatment for colorectal liver metastases (CLMs) is surgical resection. However, depending on the pattern of the disease, a significant number of patients may require different approaches alone or in combination with surgery, including thermal ablation (radiofrequency (RFA) or microwave (MWA) ablation) or transarterial liver-directed therapies, althoug
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Dissertations / Theses on the topic "RF/microwave ablation"

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Barry, Michael A. "A phantom for electrosurgery." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/19611.

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A phantom was developed to investigate the thermal effects around RF ablation catheter tips. It consisted of blocks of transparent gellan encasing a vertically oriented sheet of thermochromic liquid crystal (TLC) material, which displays temperature as colours in the lethal range for biological cells (~50 - 80°C; lethal isotherm considered to be 53°C). Over the gel, a supernatant fluid was allowed to flow at velocities comparable to endocardial blood velocities in humans, and the liquid and substrate were maintained at 37°C during ablations. The supernatant and substrate impedance were titrate
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Jégou, Carole. "Intégration d'un film mince de Pb(Zr,Ti)O₃ dans une structure capacitive pour applications RF." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112322/document.

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Les matériaux ferroélectriques suscitent beaucoup d’intérêt du fait de leurs propriétés physiques telles que la piézoélectricité, la ferroélectricité ou encore leur permittivité élevée. Ainsi, on cherche à les intégrer dans les micro- et nano-systèmes dans lesquels on les retrouve généralement sous forme de couche mince dans une configuration de type capacité plane. En particulier, l’oxyde de plomb, titane et zirconium (PZT) est un matériau très attractif pour les applications RF capacitives du fait de sa grande permittivité. Son intégration sur des électrodes métalliques, i.e. les lignes copl
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Cook, Jason Ray. "RF/microwave absorbing nanoparticles and hyperthermia." Thesis, 2009. http://hdl.handle.net/2152/ETD-UT-2009-12-399.

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The primary purpose of this work was to evaluate the capability of nanoparticles to transform electromagnetic energy at microwave frequencies into therapeutic heating. Targeted nanoparticles, in conjunction with microwave irradiation, can increase the temperatures of the targeted area over the peripheral region. Therefore, to become clinically viable, microwave absorbing nanoparticles must first be identified, and a system to monitor the treatment must be developed. In this study, ultrasound temperature imaging was used to monitor the temperature of deep lying structures. First, a material-de
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Book chapters on the topic "RF/microwave ablation"

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Brace, Christopher L., and Paul F. Laeseke. "Introduction to Ablative Techniques." In Interventional Radiology, edited by Bradley B. Pua, Anne M. Covey, and David C. Madoff. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190276249.003.0015.

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Tumor ablation has become an important technique for treating many cancers of the abdomen, chest, and bones. Over the last 30 years, several different ablation modalities have been evaluated, relying primarily on chemical or thermal mechanisms of action. Early results with percutaneous ethanol injection and radiofrequency (RF) ablation encouraged refinements in technology and techniques, with microwave, laser, ultrasound, and electroporation sources now commercially available. Thermal ablation is now affixed in multiple treatment guidelines for the liver, lung, kidney, and bone, with other app
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Tsikouras, Panagiotis, Fotini Gaitatzi, Stefani Filiou, et al. "Uterine Embolization as a New Treatment Option in Adenomyosis Uteri." In Endometriosis - Recent Advances, New Perspectives and Treatments [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.101480.

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Adenomyosis is characterized by the development of endometrial ectopic glands and tissue in the myometrium layer in depth greater than 2.5 mm from the endometrial surface of the separative area by -myomas well as by hypertrophy and hyperplasia of the smooth muscles of the myometrium. This is filtration, not mere displacement, of the myometrium, from the endometrium. Clinical symptoms include dysmenorrhea and menorrhagia. It is diffuse (adenomyosis) or focal (adenomyoma), asymmetrically affects the uterine wall of premenopausal women (usually the posterior) and often coexists with myomas. The p
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Conference papers on the topic "RF/microwave ablation"

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Murphy, Olive, Mohammad Reza Bahmanyar, Christopher N. McLeod, Christofer Toumazou, and Magdi Yacoub. "Beyond RF ablation other uses for RF within the body." In 2016 46th European Microwave Conference (EuMC). IEEE, 2016. http://dx.doi.org/10.1109/eumc.2016.7824605.

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Murphy, Olive, Mohammad Reza Bahmanyar, Christopher N. McLeod, Christofer Toumazou, and Magdi Yacoub. "Beyond RF ablation other uses for RF within the body." In 2016 11th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2016. http://dx.doi.org/10.1109/eumic.2016.7777584.

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Burn, Patrick, Pallav Shah, and Christopher Hancock. "Flexible Microwave Ablation Device with Integrated RF Cut Modality." In 2018 48th European Microwave Conference (EuMC). IEEE, 2018. http://dx.doi.org/10.23919/eumc.2018.8541670.

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Wangmao Liu, Xianqi Lin, Fangsen Yang, Jiangjie Zeng, Hongbo Song, and Ying Cui. "Microwave Ablation Antenna with the ablation pattern being a figure-of-eight." In 2016 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE, 2016. http://dx.doi.org/10.1109/imws-amp.2016.7588394.

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Beale, Gary. "Improving patient safety in microwave ablation treatments." In 2014 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO). IEEE, 2014. http://dx.doi.org/10.1109/imws-bio.2014.7032421.

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Lange, Matthew A., Greg A. Pitz, Glen P. Perram, and Claude Phipps. "Effect of Residence Time on Singlet Oxygen Production in Microwave and RF Discharges." In INTERNATIONAL SYMPOSIUM ON HIGH POWER LASER ABLATION 2010. AIP, 2010. http://dx.doi.org/10.1063/1.3507137.

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Lin, Sen, Haidong Chen, Quan Xue, and Wenquan Che. "Design of A Dual-Frequency Planar Microwave Ablation Antenna." In 2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE, 2020. http://dx.doi.org/10.1109/imws-amp49156.2020.9199739.

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Sanpamch, Arthorn, Kusol Petsarb, Watchara Sroykham, et al. "An investigation of microwave ablation for bone thermal drilling." In 2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO). IEEE, 2013. http://dx.doi.org/10.1109/imws-bio.2013.6756172.

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Sanpamch, Arthorn, Kusol Petsarb, Watchara Sroykham, et al. "A simulation of lung ablation using microwave thermal energy." In 2015 IEEE MTT-S 2015 International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO). IEEE, 2015. http://dx.doi.org/10.1109/imws-bio.2015.7303859.

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Bouaziz, Sofiene, Matthieu Berthome, Jean-Francois Robillard, and Emmanuel Dubois. "Ultra-foldable/stretchable wideband RF interconnects using laser ablation of metal film on a flexible substrate." In 2015 European Microwave Conference (EuMC 2015). IEEE, 2015. http://dx.doi.org/10.1109/eumc.2015.7345902.

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