Results 11 to 20 of about 85,653 (229)

Analysis of IMRT patient specific quality assurance using EPID measurement data from the Halcyon linear accelerator. [PDF]

PLoS ONE
This study investigated the characteristics of electronic portal imaging device (EPID)-based perpendicular field-by-field patient-specific quality assurance (PFF-PSQA) on the Halcyon linear accelerator by comparing them with the true composite (TC)-PSQA ...
Shinhaeng Cho, Jea-Uk Jeong, Yong Hyub Kim, Mee Sun Yoon, Taek-Keun Nam, Sung-Ja Ahn, Ju-Young Song   +6 more
doaj   +2 more sources

A Time-Series Approach for Machine Learning-Based Patient-Specific Quality Assurance of Radiosurgery Plans [PDF]

Bioengineering
Stereotactic radiosurgery (SRS) for multiple brain metastases can be delivered with a single isocenter and non-coplanar arcs, achieving highly conformal dose distributions at the cost of extreme modulation of treatment machine parameters.
Simone Buzzi, Pietro Mancosu, Andrea Bresolin, Pasqualina Gallo, Francesco La Fauci, Francesca Lobefalo, Lucia Paganini, Marco Pelizzoli, Giacomo Reggiori, Ciro Franzese, Stefano Tomatis, Marta Scorsetti, Cristina Lenardi, Nicola Lambri   +13 more
doaj   +2 more sources

Feasibility study of structural similarity index for patient-specific quality assurance. [PDF]

J Appl Clin Med Phys
AbstractBackgroundThe traditional gamma evaluation method combines dose difference (DD) and distance‐to‐agreement (DTA) to assess the agreement between two dose distributions. However, while gamma evaluation can identify the location of errors, it does not provide information about the type of errors.PurposeThe purpose of this study is to optimize and ...
Lee JC, Park HW, Kang YN.
europepmc   +3 more sources

Therapeutic dose prediction using score-based diffusion model for pretreatment patient-specific quality assurance [PDF]

Frontiers in Oncology
ObjectivesImplementing pre-treatment patient-specific quality assurance (prePSQA) for cancer patients is a necessary but time-consuming task, imposing a significant workload on medical physicists.
Xiuwen Yu, Jiabin Lin, Changfei Gong, Minhui Zhang, Xianyu Luo, Qiegen Liu, Yun Zhang   +6 more
doaj   +2 more sources

Patient-specific quality assurance of dynamically-collimated proton therapy treatment plans. [PDF]

Med Phys
AbstractBackgroundThe dynamic collimation system (DCS) provides energy layer‐specific collimation for pencil beam scanning (PBS) proton therapy using two pairs of orthogonal nickel trimmer blades. While excellent measurement‐to‐calculation agreement has been demonstrated for simple cube‐shaped DCS‐trimmed dose distributions, no comparison of ...
Bennett LC, Hyer DE, Vu J, Patwardhan K, Erhart K, Gutierrez AN, Pons E, Jensen E, Ubau M, Zapata J, Wroe A, Wake K, Nelson NP, Culberson WS, Smith BR, Hill PM, Flynn RT.   +16 more
europepmc   +3 more sources

Automated Patient-specific Quality Assurance for Automated Segmentation of Organs at Risk in Nasopharyngeal Carcinoma Radiotherapy [PDF]

Cancer Control
Introduction Precision radiotherapy relies on accurate segmentation of tumor targets and organs at risk (OARs). Clinicians manually review automatically delineated structures on a case-by-case basis, a time-consuming process dependent on reviewer ...
Yixuan Wang MD, Jiang Hu MD, Lixin Chen PhD, Dandan Zhang PhD, Jinhan Zhu PhD   +4 more
doaj   +2 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

Survey of patient‐specific quality assurance practice for IMRT and VMAT [PDF]

Journal of Applied Clinical Medical Physics, 2021
AbstractA first‐time survey across 15 cancer centers in Ontario, Canada, on the current practice of patient‐specific quality assurance (PSQA) for intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) delivery was conducted.
Chan, Gordon H., Chin, Lee C. L., Abdellatif, Ady, Bissonnette, Jean‐Pierre, Buckley, Lesley, Comsa, Daria, Granville, Dal, King, Jenna, Rapley, Patrick L., Vandermeer, Aaron   +9 more
openaire   +2 more sources

Evaluation of patient specific quality assurance of gated field in field radiation therapy technique using two-dimensional detector array

Journal of Health Sciences, 2020
Introduction: Gated tangential field-in-field (FIF) technique is used to lower the dose to organs at risk for breast cancer radiotherapy (RT). In this study, the authors investigated the accuracy of the delivered treatment plan with and without gating ...
Dražan Jaroš, Goran Kolarević, Aleksandar Kostovski, Milovan Savanović, Dejan Ćazić, Goran Marošević, Nataša Totorović, Dragoljub Mirjanić   +7 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