Results 31 to 40 of about 8,057,312 (144)

A Large Area Pixelated Silicon Array Detector for Independent Transit In Vivo Dosimetry

Applied Sciences, 2022
A large area pixelated silicon array detector named “MP987” has been developed for in vivo dosimetry. The detector was developed to overcome the non-water equivalent response of EPID (Electronic Portal Imaging Device) dosimetry systems, due to the ...
Owen J. Brace, Iolanda Fuduli, Saree Alnaghy, Albert T. Le, Jeremy A. Davis, Trent Causer, Dean Wilkinson, Aleksandr Perevertaylo, Anatoly B. Rosenfeld, Marco Petasecca   +9 more
doaj   +1 more source

Trends in gel dosimetry : preliminary bibliometric overview of active growth areas, research trends and hot topics from Gore's 1984 paper onwards [PDF]

, 2016
John Gore’s seminal 1984 paper on gel dosimetry spawned a vibrant research field ranging from fundamental science through to clinical applications. A preliminary bibliometric study was undertaken of the gel dosimetry family of publications inspired by ...
Baldock, Clive (R20534)
core   +1 more source

Evaluation of Daily CT for EPID-Based Transit In Vivo Dosimetry

Frontiers in Oncology, 2021
PurposeThe difference in anatomical structure and positioning between planning and treatment may lead to bias in electronic portal image device (EPID)-based in vivo dosimetry calculations. The purpose of this study was to use daily CT instead of planning
Bin Feng, Bin Feng, Bin Feng, Lei Yu, Lei Yu, Lei Yu, Enwei Mo, Enwei Mo, Enwei Mo, Liyuan Chen, Liyuan Chen, Liyuan Chen, Jun Zhao, Jun Zhao, Jun Zhao, Jiazhou Wang, Jiazhou Wang, Jiazhou Wang, Weigang Hu, Weigang Hu, Weigang Hu   +20 more
doaj   +1 more source

A simple method to back-project isocenter dose of radiotherapy treatments using EPID transit dosimetry

Brazilian Journal of Radiation Sciences, 2017
The aim of this work was to implement a simple algorithm to evaluate isocenter dose in a phantom using the back-projected transmitted dose acquired using an Electronic Portal Imaging Device (EPID) available in a Varian Trilogy accelerator with two ...
Thiago Bernardino da Silveira, Bianca de Quadros Cerbaro, Luiz Antônio Ribeiro da Rosa   +2 more
doaj   +1 more source

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

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   +1 more source

Adaptive Radiotherapy (ART) Using In Vivo Portal Dosimetry Constancy on Halcyon LINAC for Head and Neck Cancer VMAT [PDF]

Iranian Journal of Medical Physics
Introduction: This study evaluated the potential of the Varian Halcyon LINAC and its associated Portal Dosimetry (PD) software, using in vivo megavoltage portal images, as a tool for in vivo portal dosimetry constancy (IVDc) in head and neck cancer (HNC)
Venugopal Sundaram, David Khnna, Mohandass P, Prabhu R, Sathyaraj Palanivel, Rekha Arya, Nilotpal Chakravarty, Antovaz S, Palanivel D   +8 more
doaj   +1 more source

Simple electronic portal imager-based pretreatment quality assurance using Acuros XB: A feasibility study

Journal of Medical Physics, 2019
Objective: This study demonstrates a novel electronic portal imaging device (EPID)-based forward dosimetry approach for pretreatment quality assurance aided by a treatment planning system (TPS).
Arjunan Manikandan, Sureka Chandra Sekaran, Biplab Sarkar, Sujatha Manikandan   +3 more
doaj   +1 more source

Setup in a clinical workflow and impact on radiotherapy routine of an in vivo dosimetry procedure with an electronic portal imaging device. [PDF]

PLoS ONE, 2018
High conformal techniques such as intensity-modulated radiation therapy and volumetric-modulated arc therapy are widely used in overloaded radiotherapy departments.
Jie Li, Angelo Piermattei, Pei Wang, Shengwei Kang, Mingyong Xiao, Bin Tang, Xiongfei Liao, Xin Xin, Mattia Grusio, Lucia Clara Orlandini   +9 more
doaj   +1 more source

Comparison of sliding window and field-in-field techniques for tangential whole breast irradiation using the Halcyon and Synergy Agility systems

Radiation Oncology, 2021
Background To implement a tangential treatment technique for whole breast irradiation using the Varian Halcyon and to compare it with Elekta Synergy Agility plans.
Anne Richter, Sonja Wegener, Kathrin Breuer, Gary Razinskas, Stefan Weick, Florian Exner, Klaus Bratengeier, Michael Flentje, Otto Sauer, Bülent Polat   +9 more
doaj   +1 more source

Stenting of the Portal Vein Combined with Different Numbers of Iodine-125 Seed Strands: Dosimetric Analyses

Chinese Medical Journal, 2017
Background: Portal-vein stent combined with one iodine-125 (125I) seed strand has become a new treatment for portal vein tumor thrombosis. However, dosimetric aspects of this irradiation stent have not been reported.
Li-Hong Yao, Liang Su, Lu Liu, Hai-Tao Sun, Jun-Jie Wang   +4 more
doaj   +1 more source