Results 31 to 40 of about 85,674 (244)

Comprehensive clinical evaluation of TomoEQA for patient-specific pre-treatment quality assurance in helical tomotherapy

Radiation Oncology, 2022
Background Based on a previous study on the feasibility of TomoEQA, an exit detector-based patient-specific pre-treatment quality assurance (QA) method for helical tomotherapy, an in-depth clinical evaluation was conducted.
Changhwan Kim, Min Cheol Han, Young Kyu Lee, Han-Back Shin, Hojin Kim, Jin Sung Kim   +5 more
doaj   +1 more source

Evaluation of Dosimetry Check software for IMRT patient‐specific quality assurance [PDF]

Journal of Applied Clinical Medical Physics, 2015
The purpose of this study is to evaluate the use of the Dosimetry Check system for patient‐specific IMRT QA. Typical QA methods measure the dose in an array dosimeter surrounded by homogenous medium for which the treatment plan has been recomputed. With the Dosimetry Check system, fluence measurements acquired on a portal dosimeter is applied to the ...
Narayanasamy, Ganesh, Zalman, Travis, Ha, Chul S., Papanikolaou, Niko, Stathakis, Sotirios   +4 more
openaire   +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

Deep Hybrid Learning Prediction of Patient-Specific Quality Assurance in Radiotherapy: Implementation in Clinical Routine

Diagnostics, 2023
Background: Arc therapy allows for better dose deposition conformation, but the radiotherapy plans (RT plans) are more complex, requiring patient-specific pre-treatment quality assurance (QA). In turn, pre-treatment QA adds to the workload. The objective
Noémie Moreau, Laurine Bonnor, Cyril Jaudet, Laetitia Lechippey, Nadia Falzone, Alain Batalla, Cindy Bertaut, Aurélien Corroyer-Dulmont   +7 more
doaj   +1 more source

4089 Clinical Implementation of Monte Carlo Dose Calculation for Patient-Specific Radiotherapy Quality Assurance

Journal of Clinical and Translational Science, 2020
OBJECTIVES/GOALS: The Monte Carlo dose calculation method is often considered the “gold standard” for patient dose calculations and can be as radiation dose measurements.
Holly Marie Parenica, Christopher Kabat, Pamela Myers, Neil Kirby, Pavlos Papaconstadopoulos, Nikos Papanikolaou, Sotirios Stathakis   +6 more
doaj   +1 more source

Treatment plan prescreening for patient-specific quality assurance measurements using independent Monte Carlo dose calculations

Frontiers in Oncology, 2022
PurposeThis study proposes a method to identify plans that failed patient-specific quality assurance (QA) and attempts to establish a criterion to prescreen treatment plans for patient-specific QA measurements with independent Monte Carlo dose ...
Yuan Xu, Ke Zhang, Zhiqiang Liu, Bin Liang, Xiangyu Ma, Wenting Ren, Kuo Men, Jianrong Dai   +7 more
doaj   +1 more source

Development of Dosimetric Verification System for Patient-Specific Quality Assurance of High-Dose-Rate Brachytherapy

Frontiers in Oncology, 2021
Purpose: The aim of this study was to develop a dosimetric verification system (DVS) using a solid phantom for patient-specific quality assurance (QA) of high-dose-rate brachytherapy (HDR-BT).Methods: The proposed DVS consists of three parts: dose ...
Sang-Won Kang, Sang-Won Kang, Jin-Beom Chung, Kyeong-Hyeon Kim, Kyeong-Hyeon Kim, Chang Heon Choi, Seonghee Kang, Dong-Seok Shin, Dong-Seok Shin, Woong Cho, Kuen-Yong Eom, Hae-Jin Park, Jin-Young Kim, Changhoon Song, In Ah Kim, Jae-Sung Kim, Tae Suk Suh, Tae Suk Suh, Justin C. Park   +18 more
doaj   +1 more source

Analysis of dose comparison techniques for patient‐specific quality assurance in radiation therapy [PDF]

Journal of Applied Clinical Medical Physics, 2019
AbstractPurposeGamma evaluation is the most commonly used technique for comparison of dose distributions for patient‐specific pretreatment quality assurance in radiation therapy. Alternative dose comparison techniques have been developed but not widely implemented. This study aimed to compare and evaluate the performance of several previously published
Yu, Liting, Tang, Timothy L. S., Cassim, Naasiha, Livingstone, Alexander, Cassidy, Darren, Kairn, Tanya, Crowe, Scott B.   +6 more
openaire   +5 more sources

Prediction of portal dosimetry quality assurance results using log files-derived errors and machine learning techniques

Frontiers in Oncology, 2023
ObjectiveThis work aims to use machine learning models to predict gamma passing rate of portal dosimetry quality assurance with log file derived features.
Kah Seng Lew, Clifford Ghee Ann Chua, Calvin Wei Yang Koh, James Cheow Lei Lee, Sung Yong Park, Sung Yong Park, Hong Qi Tan   +6 more
doaj   +1 more source

Clinical evaluation of an anatomy‐based patient specific quality assurance system

Journal of Applied Clinical Medical Physics, 2014
The Delta4DVH Anatomy 3D quality assurance (QA) system (ScandiDos), which converts the measured detector dose into the dose distribution in the patient geometry was evaluated. It allows a direct comparison of the calculated 3D dose with the measured back‐projected dose.
Hauri, P, Verlaan, S, Graydon, S, Ahnen, L, Klöck, S, Lang, S   +5 more
openaire   +4 more sources