Results 11 to 20 of about 40,542 (246)

In vivo dosimetry with an electronic portal imaging device for prostate cancer radiotherapy with an endorectal balloon [PDF]

Physics and Imaging in Radiation Oncology, 2019
Electronic portal imaging device-based in vivo dosimetry with a commercial product was performed for 10 prostate cancer patients treated with an air-filled endorectal balloon.
Bo Sterckx, Isabell Steinseifer, Markus Wendling   +2 more
doaj   +2 more sources

Experience with remote electronic portal imaging device-based dosimetric auditing for static and rotational intensity modulated radiotherapy [PDF]

Physics and Imaging in Radiation Oncology
The aim of this work was to evaluate results of a remote electronic portal imaging based dosimetric auditing method using Task-Group 218 clinical gamma evaluation criteria (3%,2 mm, 10% dose threshold).
Peter B. Greer, Joerg Lehmann, Alisha Moore   +2 more
doaj   +2 more sources

Radiotherapy delivery error detection with electronic portal imaging device (EPID)-based in vivo dosimetry [PDF]

Chinese Medical Journal, 2023
Xueying Yang, Lisheng Geng, David Huang, Kaiwen Li, Hongqing Zhuang, Jing Cai, Ruijie Yang, Jinjiao Li, Yuanyuan Ji   +8 more
doaj   +2 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

Validation of three-dimensional electronic portal imaging device-based PerFRACTION™ software for patient-specific quality assurance

Journal of Medical Physics, 2019
Purpose: PerFRACTION™ is a three-dimensional (3D) in vivo electronic portal imaging device-based dosimetry software. To validate the software, three phantoms with different inserts (2D array, ionization chamber, and inhomogeneity materials) were ...
A Aziz Sait, Jason Figueredo, Glenn W Jones, Kai Jones, Thomas McGowan, Jeff Kapatoes, Ramani Ramaseshan   +6 more
doaj   +2 more sources

The influence of acquisition mode on the dosimetric performance of an amorphous silicon electronic portal imaging device

Journal of Medical Physics, 2017
Aims: This study investigates the impact of cine acquisition mode on the dosimetric characteristics of a Varian aS500 amorphous silicon electronic portal imaging device (a-Si EPID).
Omemh Bawazeer, Sisira Herath, Siva Sarasanandarajah, Tomas Kron, Pradip Deb   +4 more
doaj   +2 more sources

Evaluation of Interfractional Setup Uncertainties and Calculation of Adequate CTV-PTV Margin for Head and Neck Radiotherapy using Electronic Portal Imaging Device [PDF]

Journal of Biomedical Physics and Engineering
Background: The evaluation of treatment-associated errors is important in the radiotherapy process, particularly those resulting related to patient setup.Objective: This research aimed to assess the interfractional setup errors and determine the Clinical
Elham Ahmadi, Azam Eskandari, Mohammad Mohammadi, Maryam Naji, Shahrokh Naseri, Hamid Gholamhosseinian   +5 more
doaj   +2 more sources

Investigation of the mechanical performance of Siemens linacs components during arc: gantry, MLC, and electronic portal imaging device [PDF]

Medical Devices: Evidence and Research, 2015
Pejman Rowshanfarzad,1 Peter Häring,2 Hans L Riis,3 Sune J Zimmermann,3 Martin A Ebert1,4 1School of Physics, The University of Western Australia, Crawley, WA, Australia; 2German Cancer Research Center (DKFZ), Medical Physics in Radiation Oncology ...
Rowshanfarzad P, Häring P, Riis HL, Zimmermann SJ, Ebert MA   +4 more
doaj   +2 more sources

Determination of dosimetric leaf gap using amorphous silicon electronic portal imaging device and its influence on intensity modulated radiotherapy dose delivery

Journal of Medical Physics, 2015
As complex treatment techniques such as intensity modulated radiotherapy (IMRT) entail the modeling of rounded leaf-end transmission in the treatment planning system, it is important to accurately determine the dosimetric leaf gap (DLG) value for a ...
S Timothy Peace Balasingh, I Rabi Raja Singh, K Mohamathu Rafic, S Ebenezer Suman Babu, B Paul Ravindran   +4 more
doaj   +2 more sources

Clinical performance of FractionLab in patient-specific quality assurance for intensity-modulated radiotherapy: a retrospective study [PDF]

Journal of Yeungnam Medical Science, 2022
Background This study was aimed at comparing and analyzing the results of FractionLab (Varian/Mobius Medical System) with those of portal dosimetry that uses an electronic portal imaging device.
Se An Oh, Sung Yeop Kim, Jaehyeon Park, Jae Won Park, Ji Woon Yea   +4 more
doaj   +1 more source