Results 11 to 20 of about 282,170 (295)

Respiratory gated radiotherapy-pretreatment patient specific quality assurance

Journal of Medical Physics, 2016
Organ motions during inter-fraction and intra-fraction radiotherapy introduce errors in dose delivery, irradiating excess of normal tissue, and missing target volume. Lung and heart involuntary motions cause above inaccuracies and gated dose delivery try
Rajesh Thiyagarajan, Sujit Nath Sinha, Ramamoorthy Ravichandran, Kothandaraman Samuvel, Girigesh Yadav, Ashok Kumar Sigamani, Vikraman Subramani, N Arunai Nambi Raj   +7 more
doaj   +3 more sources

National survey of patient specific IMRT quality assurance in China [PDF]

Radiation Oncology, 2019
Background To analyze and present the China’s national survey on patient-specific IMRT quality assurance (QA). Methods A national survey was conducted in all radiotherapy centers in China to collect comprehensive information on status of IMRT QA practice,
Yuxi Pan, Ruijie Yang, Shuming Zhang, Jiaqi Li, Jianrong Dai, Junjie Wang, Jing Cai   +6 more
doaj   +4 more sources

Clinical evaluation of an anatomy-based patient specific quality assurance system [PDF]

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-
Ahnen, L, Graydon, S, Hauri, P, Klöck, S, Lang, S, Verlaan, S   +5 more
core   +4 more sources

Evaluation of Delta Anatomy in 3D Patient-Specific IMRT Quality Assurance

Technology in Cancer Research & Treatment, 2020
Purpose: To evaluate the performance of Delta 4DVH Anatomy in patient-specific intensity-modulated radiotherapy quality assurance. Materials and Methods: Dose comparisons were performed between Anatomy doses calculated with treatment plan dose measured ...
Du Tang PhD, Zhen Yang MS, Xunzhang Dai MM, Ying Cao MS   +3 more
doaj   +3 more sources

Patient-specific independent 3D GammaPlan quality assurance for Gamma Knife Perfexion radiosurgery [PDF]

Journal of Applied Clinical Medical Physics, 2013
One of the most important aspects of quality assurance (QA) in radiation therapy is redundancy of patient treatment dose calculation. This work is focused on the patient-specific time and 3D dose treatment plan verification for stereotactic radiosurgery ...
Best, Best, Bhatnagar, Cho, Daniel A. Low, Ma, Maria Mamalui-Hunter, Novotony, Robert E. Drzymala, Sasa Mutic, Sridhar Yaddanapudi, Tianyu Zhao, Wright   +12 more
core   +7 more sources

Quality assurance of 3D-printed patient specific anatomical models: a systematic review

3D Printing in Medicine
Background The responsible use of 3D-printing in medicine includes a context-based quality assurance. Considerable literature has been published in this field, yet the quality of assessment varies widely.
Martin Schulze, Lukas Juergensen, Robert Rischen, Max Toennemann, Gregor Reischle, Jan Puetzler, Georg Gosheger, Julian Hasselmann   +7 more
doaj   +4 more sources

Statistical Process Control in Monitoring Radiotherapy Quality Assurance Program: An Institutional Experience. [PDF]

Iranian Journal of Medical Physics, 2022
Introduction: Statistical process control (SPC) is a handy and powerful tool for monitoring quality assurance (QA) programs in radiotherapy. This study explains the institutional experience in monitoring weekly output constancy QA and patient-specific ...
Vysakh R, R Ganapathi Raman, P Niyas, P Aflah   +3 more
doaj   +1 more source

Suitability Assessment of an Indigenous Heterogeneous Thoracic Phantom for Patient-Specific Quality Assurance in Radiotherapy [PDF]

Iranian Journal of Medical Physics, 2022
Introduction: Patient-specific quality assurance (PSQA) assumes a vital role in precise and accurate radiation delivery to cancer patients. Since the patient body comprises heterogeneous media, the present study aimed to fabricate a heterogeneous ...
Vinod Gangwar, Avinash Agarwal, Om Prakash Gurjar, Lalit Kumar, Vineet Kumar Mishra, Surendra Mishra   +5 more
doaj   +1 more source

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

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