نتایج جستجو برای: iort
تعداد نتایج: 371 فیلتر نتایج به سال:
The design concept and dosimetric characteristics of a new applicator system for intraoperative radiation therapy (IORT) are presented in this work. A new hard-docking commercial system includes polymethylmethacrylate (PMMA) applicators with different diameters and applicator end angles and a set of secondary lead collimators. A telescopic device allows changing of source-to-surface distance (S...
The specific design of the mobile dedicated intraoperative radiotherapy (IORT) accelerators and different electron beam collimation system can change the dosimetric characteristics of electron beam with respect to the conventional accelerators. The aim of this study is to measure and compare the dosimetric characteristics of electron beam produced by intraoperative and conventional radiotherapy...
5 Although the new American Society for Radiation Oncology (ASTRO) consensus statement on accelerated partial breast irradiation (APBI) reflects many important changes relative to case selection and inclusion criteria for APBI, we would like to address our concerns specifically regarding the recommendations on the use of low-energy x-ray intraoperative radiation therapy (IORT). The consensus sh...
BACKGROUND In conservative breast surgery, the achievement of a satisfactory cosmetic result could be challenging; oncoplastic techniques may be helpful in many cases. A comparative analysis was performed among 3 groups of patients undergoing oncoplastic techniques plus external radiation therapy or intraoperative radiotherapy (IORT) and breast conservative surgery plus external radiation thera...
Chicago, said her center has been doing Iort with an Intrabeam for nearly a year and has treated about 50 patients so far. “We don’t have a strict protocol,” she said, “but we tend to use it on women in their 60s who have relatively small, invasive [ductal] cancers.” “Patients love it,” said hansen. But it’s frustrating for those who find out later, from the final pathology report, that they ha...
After the results obtained in the two randomized clinical trial, the ELIOT trial and the TARGIT-A trial, a heated debate is going on concerning the question of applying intraoperative radiotherapy (IORT) instead of postoperative whole breast irradiation (WBI) after breast conservative treatment. Currently, many centers are applying the IORT following the strict selection criteria dictated by th...
Accelerated partial breast irradiation (APBI) has been under clinical investigation for more than 15 years. There are several technical approaches that are clinically established, e.g. brachytherapy, intraoperative radiotherapy (IORT), or external-beam radiotherapy. The understanding of the underlying biology, optimal technical procedures, patient selection criteria, and imaging changes during ...
The Internet of Robotic Things (IoRT) [9] is a concept first introduced by Dan Kara at ABI Research, which talks about augmenting the existing IoT with active sensorization; thereby, opening the doors to novel business ideas, at the intersection of both IoT and Robotics. This position paper considers the synergy between IoT and robotics: it talks about the technologies in IoT that would benefit...
Intraoperative radiotherapy (IORT) is a relatively new technique in which irradiation with electrons is performed during an open surgery procedure. This approach poses significant problems in obtaining accurate dosimetry, since neither the pre- nor the postoperative patient images actually matches the irradiation field. Our objective was to implement a software tool able to provide an estimate ...
Percentage depth doses (PDDs) and transverse dose profiles (TDPs) were calculated by a Monte Carlo simulation of electron beams of different energies (3, 5, 7 and 9 MeV) produced by a NOVAC7® accelerator. The NOVAC7® is a linear accelerator designed for Intraoperative Radiation Therapy (IORT). The PDDs and TDPs were also experimentally determined. Both calculations and measurements were done on...
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