Results 21 to 30 of about 85,653 (229)

Importance of beam-matching between truebeam stx and novalis tx in pre-treatment quality assurance using portal dosimetry

Journal of Medical Physics, 2021
Flexibility and efficiency in a radiotherapy department with different linear accelerators (linacs) can be improved if they are dosimetrically equivalent, and there is no need of plan or patient-specific quality assurance (PSQA) modification.
José Alejandro Rojas-López, Daniel Venencia   +1 more
doaj   +1 more source

Feasibility of a 3D-printed anthropomorphic patient-specific head phantom for patient-specific quality assurance of intensity-modulated radiotherapy. [PDF]

PLoS ONE, 2017
This study evaluated the feasibility of utilizing a 3D-printed anthropomorphic patient-specific head phantom for patient-specific quality assurance (QA) in intensity-modulated radiotherapy (IMRT).
Ji Woon Yea, Jae Won Park, Sung Kyu Kim, Dong Youn Kim, Jae Gu Kim, Chan Young Seo, Won Hyo Jeong, Man Youl Jeong, Se An Oh   +8 more
doaj   +1 more source

THE COMPARISON OF 2D DOSE PATIENT-SPECIFIC QUALITY ASSURANCE BETWEEN MONTE CARLO-CONVOLUTION AND MODIFIED CLARKSON INTEGRATION ALGORITHM

Spektra: Jurnal Fisika dan Aplikasinya, 2023
A sophisticated machine of radiotherapy treatment process follows the complexity of the quality assurance (QA) measurement. Non-measurement QA becomes one of the solutions to reduce the medical physicists’ workload.
Akbar Azzi, Supriyanto Ardjo Pawiro, Terry Mart   +2 more
doaj   +1 more source

Patient specific quality assurance for the delivery of intensity modulated radiotherapy [PDF]

Journal of Applied Clinical Medical Physics, 2003
A patient specific quality assurance program has been developed to facilitate the clinical implementation of intensity modulated radiotherapy (IMRT) delivered using a micro‐multileaf collimator. The methodology includes several dosimetric tasks that are performed prior to the treatment of each patient.
Agazaryan, Nzhde, Solberg, Timothy D, DeMarco, John J   +2 more
openaire   +4 more sources

VALIDATION OF COMPASS FOR PRE-TREATMENT PATIENT-SPECIFIC QUALITY ASSURANCE

International Journal of Advanced Research, 2022
Aim: Purpose of study is to validate COMPASS 3D patient specific quality-assurance software with Monaco treatment planning system (TPS) for routine quality assurance. Materials & methods: Purpose is to test the MLC modelling in COMPASS software, using Elekta Express QA package contains eight QA fields as follows (i) 10x10 (ii) 20x20 (iii) 3ABUT ...
Seema Sharma, Dayanand Sharma, Vellaiyan Subramani, Suman Bhaskar, Sushmita Pathy, Pratik Kumar, Sanjay Thulkar, N. Gopishankar, Subhash Chander   +8 more
openaire   +2 more sources

Comparing log file to measurement-based patient-specific quality assurance

Physical and Engineering Sciences in Medicine, 2022
Abstract Recent technological advances have allowed the possibility of performing patient-specific quality assurance (QA) without time-intensive measurements. The objectives of this study are to: 1) compare how well the log file-based Mobius QA system agrees with measurement-based QA methods (ArcCHECK and portal dosimetry, PD) in passing and ...
Li Ting Chan, Yun Inn Tan, Poh Wee Tan, Yuh Fun Leong, Jong Shin Khor, Mun Woan Teh, Joan Faith Loria Cruz, Sháun Peter Baggarley, Kiat Huat Ooi, Yiat Horng Leong   +9 more
openaire   +2 more sources

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

Applications of machine and deep learning to patient‐specific IMRT/VMAT quality assurance [PDF]

Journal of Applied Clinical Medical Physics, 2021
AbstractIn order to deliver accurate and safe treatment to cancer patients in radiation therapy using advanced techniques such as intensity modulated radiation therapy (IMRT) and volumetric‐arc radiation therapy (VMAT), patient specific quality assurance (QA) should be performed before treatment.
Alexander F. I. Osman, Nabil Maalej
openaire   +2 more sources