Results 271 to 280 of about 25,193 (285)

APPLICATION AND COMPARISON OF MACHINE LEARNING ALGORITHMS TO PREDICT VMAT GAMMA PASSING RATES

Physica Medica, 2022
Ms Laura Medina-Bazaco, Mr Carlos Fernández-Leira, Olivia Jordi-Ollero, Victor Hernández, Jordi Saez, Ismael Sancho, Rodolfo de Blas, Francisco Pino, Ignasi Modolell, Roberto Martín-Vaello, Sergio Llácer, Cristina Picón   +11 more
openaire   +1 more source

Integrating aperture shape controller and machine learning prediction to improve gamma passing rates in lattice radiotherapy

Physics in Medicine & Biology
Abstract Objective. This study proposes a workflow integrating the aperture shape controller (ASC) in the Varian Eclipse system with a machine learning–based verification prediction model to improve gamma passing rates (GPRs) of LATTICE Radiotherapy (LRT) plans and reduce repeated verifications.
Xiangyu E, Su Zeng, Minghe Lv, Yue Feng, Jingping Yu, Ruping Zhao, Hongwei Zeng   +6 more
openaire   +2 more sources

High count rate first-pass radionuclide angiography using a digital gamma camera.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 1986
In this study, first-pass radionuclide angiography (FPRNA) was performed using a digital single-crystal gamma camera. Twenty-nine men and six women (ages 43-80, mean 61 yr) underwent FPRNA in the supine position immediately prior to cardiac catheterization.
R, Gal, R P, Grenier, J, Carpenter, D H, Schmidt, S C, Port   +4 more
openaire   +1 more source

Unifying gamma passing rates in patient-specific QA for VMAT lung cancer treatment based on data assimilation

Physical and Engineering Sciences in Medicine
This study aimed to identify systematic errors in measurement-, calculation-, and prediction-based patient-specific quality assurance (PSQA) methods for volumetric modulated arc therapy (VMAT) on lung cancer and to standardize the gamma passing rate (GPR) by considering systematic errors during data assimilation.
Tomohiro Ono, Takanori Adachi, Hideaki Hirashima, Hiraku Iramina, Noriko Kishi, Yukinori Matsuo, Mitsuhiro Nakamura, Takashi Mizowaki   +7 more
openaire   +2 more sources

PO-1360: Impact of plan parameters in gamma passing rates in VMAT QA

Radiotherapy and Oncology, 2020
A. Garcia Perez, M. Alonso-Etxarri, A. Gonzalez-Pose, J. Vazquez-Rodriguez, A. Lopez Medina, A.G. Teijeiro-Garcia, B. Alvarez-Andrade, D. Medal-Francesch, F. Salvador-Gomez, M. Salgado-Fernandez   +9 more
openaire   +1 more source

Impact of Plan Quality and Complexity Metrics on Gamma Passing Rate SIMT SRS Technique

International Journal of Radiation Oncology*Biology*Physics, 2022
E. Salari, N.N. Sperling, M. Hadziahmetovic, E.I. Parsai   +3 more
openaire   +1 more source

AOUC experience on patient-based dose verification: from gamma passing-rate to DVH.

2013
The aim of this work is to evaluate the performances of a commercial software, which “perturbs” the calculated dose distribution according to the dose discrepancies detected with planar or volumetric measurements in order to predict the actually delivered 3D dose distribution in the patient.
L. Marrazzo, M. Casati, C. Arilli, A. Compagnucci, PALLOTTA, STEFANIA, TALAMONTI, CINZIA, VANZI, ELEONORA, BUCCIOLINI, MARTA   +7 more
openaire   +1 more source

Statistical analysis of correlation of gamma passing results for two quality assurance phantoms used for patient-specific quality assurance in volumetric modulated arc radiotherapy

Medical Dosimetry, 2022
Yoshinori Tanabe
exaly  

Can 2D gamma-passing rate predict DVH errors? Analysis of gamma-passing rate based VMAT QA Can 2D gamma-passing rate predict DVH errors? Analysis of gamma-passing rate based VMAT QA

2019
M Bedoya, C Wilke, Y Watanabe
openaire   +1 more source

Implementation of TG‐218 for patient‐specific quality assurance tolerance and action limits determination: Gamma passing rate evaluation using 3DVH software

Medical Physics, 2022
George Patatoukas, Stefanos Diamantopoulos, Andromachi Kougioumtzopoulou   +2 more
exaly