Results 11 to 20 of about 8,615 (194)

EPID in vivo dosimetry in RapidArc technique [PDF]

Reports of Practical Oncology & Radiotherapy, 2010
The aim of the study was to estimate the dose at the reference point applying an aSi-EPID device in the course of patient treatment.The method assumes direct proportionality between EPID signal and dose delivered to the patient reference point during the treatment session.
Slosarek, Krzysztof, Szlag, Marta, Bekman, Barbara, Grzadziel, Aleksandra   +3 more
openaire   +4 more sources

Preclinical feasibility of EPID-based transit dosimetry for total body irradiation. [PDF]

J Appl Clin Med Phys
Abstract Background Conventional extended‐distance total body irradiation (TBI) is commonly verified using point dosimeters, which provide limited spatial information and require additional handling during a prolonged treatment procedure. A portable charge‐coupled device (CCD)‐based electronic portal imaging device (EPID) positioned downstream of the ...
Nakaichi T, Okamoto H, Kon M, Takaso K, Aikawa A, Nakamura S, Iijima K, Chiba T, Nakayama H, Goka T, Igaki H.   +10 more
europepmc   +2 more sources

EPID – a useful interfraction QC tool [PDF]

Polish Journal of Medical Physics and Engineering, 2019
Abstract Biomedical accelerators used in radiotherapy are equipped with detector arrays which are commonly used to obtain the image of patient position during the treatment session. These devices use both kilovolt and megavolt x-ray beams.
Klimas, Aleksandra, Grządziel, Aleksandra, Płaza, Dominika, Bekman, Barbara, Woźniak, Bożena, Dolla, Łukasz, Osewski, Wojciech, Paściak, Paweł, Wendykier, Jacek, Ślosarek, Krzysztof   +9 more
openaire   +4 more sources

Current Practices and Clinical Implementation of Electronic Portal Imaging Device-based Dosimetry in Indian Radiotherapy Centres: A National Survey [PDF]

Journal of Medical Physics
Purpose: This study aims to assess the current prevalence, utilization patterns, and operational challenges of electronic portal imaging device (EPID)-based dosimetry systems in Indian radiotherapy centres. Materials and Methods: A multiple-choice survey
Raghavendra Hajare, Rohit Avinash Vadgaonkar, Shanmukhappa B. Kaginelli, Man Gobinda Chowdhury, Debasish Sahoo, Shrikant Kale, Ravi Teja Miriyala, Umesh Mahantshetty   +7 more
doaj   +2 more sources

Optimal pain management: epidural or locoregional nerve blocks for canine stifle surgery? [PDF]

Veterinary Evidence
PICO Question In dogs undergoing stifle surgery, do locoregional nerve blocks compared with epidural anaesthesia improve perioperative antinociception and reduce residual block?   Clinical bottom line Category of research Treatment.
Tiffany Tang, Eduardo Uquillas
doaj   +2 more sources

EPID with Efficient Proof of Non-Revocation

Proceedings of the 2022 ACM on Asia Conference on Computer and Communications Security, 2022
EPID systems are anonymous authentication mechanisms which are standardized by ISO/IEC and massively deployed in Intel processors. They are related to the large family of privacy-preserving signatures but differ in that they provide a very pragmatic way of revoking members.
Sanders, Olivier
openaire   +3 more sources

An Analysis of Quality Assurance for Intensity-modulated Radiation Therapy and Volumetric Modulated Arc Therapy Treatment Plans Using Two Dosimetric Methods: The arcCHECK System and EPIbeam Based Dosimetric Approach [PDF]

Journal of Medical Physics
Aim: The current study is to assess and compare the performance of an electronic portal imaging device (EPID)-based dosimetry system electronic portal imaging beam (EPIbeam) and a three-dimensional (3D) diode array system (ArcCHECK) using various gamma ...
Ajay Katake, Lalit Kumar, Balbir Singh, Amit Sharma, Deepak Basandrai   +4 more
doaj   +2 more sources

Improving patient treatment accuracy using transit dosimetry with Electronic Portal Imaging Device images and deep learning [PDF]

Physics and Imaging in Radiation Oncology
Background and Purpose:: Electronic portal imaging devices (EPID) can be utilized for transit in vivo dosimetry (IVD). A major limitation of standard amorphous Silicon EPID detectors for usage IVD is their non-linear detector response to water equivalent
Lorenzo Marini, Carlotta Mozzi, Michele Avanzo, Francesca Lizzi, Icro Meattini, Giovanni Pirrone, Alessandra Retico, Emmanuel Uwitonze, Aafke Christine Kraan, Cinzia Talamonti   +9 more
doaj   +2 more sources

Analysis of IMRT patient specific quality assurance using EPID measurement data from the Halcyon linear accelerator. [PDF]

PLoS ONE
This study investigated the characteristics of electronic portal imaging device (EPID)-based perpendicular field-by-field patient-specific quality assurance (PFF-PSQA) on the Halcyon linear accelerator by comparing them with the true composite (TC)-PSQA ...
Shinhaeng Cho, Jea-Uk Jeong, Yong Hyub Kim, Mee Sun Yoon, Taek-Keun Nam, Sung-Ja Ahn, Ju-Young Song   +6 more
doaj   +2 more sources

Evaluation of Dose Distribution at the Level of Electronic Portal Imaging Device using Treatment Planning System [PDF]

Journal of Biomedical Physics and Engineering
Background: Treatment Planning Systems (TPS) are designed to calculate dose distributions within the CT imaging field of view. However, the Electronic Portal Imaging Device (EPID) is positioned outside this area, making it challenging to use standard TPS
Amene Bagheri, Mehdi Momennezhad, Shahrokh Nasseri, Azam Eskandari, Erfan Saatchian, Maryam Naji, Mohammad Yasin Mohammadi   +6 more
doaj   +2 more sources