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Results for "linac commissioning": 11 found

Assessment of the Auto Registration Feature of the PET/CT Linac Used for Biology Guided Radiation Therapy (BGRT)

Authors: Emily Hansen, Tyler Kaulfers, Alois M. Ndlovu, Francia Romero, Niara Rowe, Roland Teboh

Affiliation: Montefiore Einstein University Hospital, Hackensack University Medical Center

Abstract Preview: Purpose: Daily use and reliance on the auto registration feature requires a performance check. Clinical application of auto registration is performed without a selected region of interest (ROI), requi...

Characterizing and Modeling Higher-Order Motions of Collimator Subsystem on a 60RPM Gantry Linac for Improved Small Target Dosimetry

Authors: David J. Carlson, Yiu-Hsin Chang, Huixiao Chen, Zhe (Jay) Chen, Blake Gaderlund, Ray Yang

Affiliation: RefleXion Medical, Department of Therapeutic Radiology, Yale University School of Medicine

Abstract Preview: Purpose: To address the root cause of dosimetric discrepancy for small central targets (<2cm) especially sensitive to geometric alignment of beamlets, by modeling higher-order oscillations of the coll...

Commissioning of a Near Real-Time In Vivo Film Dosimetry System

Authors: Maria F. Chan, Indra J. Das, Xiuxiu He, Seng Boh Gary Lim, Jeonghoon Park, Yunjie Yang

Affiliation: Department of Medical Physics, Memorial Sloan Kettering Cancer Center, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, Memorial Sloan Kettering Cancer Center

Abstract Preview: Purpose: There is a need for accurate and flexible in-vivo dosimetry systems, particularly for special procedures. Effective dosimetry is crucial for dose verification and maintaining records. A new r...

Commissioning, Validation and Pilot Study of New Rpld System for Dosimetry Audits in Bulgaria

Authors: Gueorgui Gueorguiev, Katia Sergieva, Filip Simeonov, Tsvetelina Todorova, Bozhidar Vladimirov

Affiliation: National Centre of Radiobiology and Radiation Protection, Queen Giovanna University Hospital

Abstract Preview: Purpose: Dosimetry audit is an essential tool enhancing confidence in the accuracy of treatment delivery and in prevention of radiation treatment incidents. Current work depicts how novel nationwide r...

Comprehensive Commissioning of an O-Ring-Shaped Image-Guided Radiotherapy System with a Gimbal-Mounted Linear Accelerator

Authors: Tetsuo Fukuda, Hideaki Hirashima, Kohei Kawata, Yukako Kishigami, Takashi Mizowaki, Mitsuhiro Nakamura, Yohei Sawada, Maika Urago

Affiliation: Kyoto University, kyotoUnivercity, Hitachi high-tech, Department of Radiation Oncology and Image-applied Therapy, Graduate School of Medicine, Kyoto University

Abstract Preview: Purpose: To present the comprehensive commissioning results of the O-ring shaped linac, OXRAY.
Materials and Methods: OXRAY enables a novel three-dimensional unicursal noncoplanar irradiation metho...

Dosimetric Evaluation of a Three-Dimensional Cubic Electronic Detector Array for Radiotherapy Linac Quality Assurance

Authors: Enzo Charles Aucca, Roger Challco, Andres M. Gonzales Galvez, Carmen SANDRA Guzman Calcina, Jimmy Hernandez-Bello, Modesto Montoya, Renzo Aaron Ocampo, Erick Paniagua, Miguel Alberto Risco-Castillo, Dante E. Roa, Renzo E. Romero, William Souza Santos, Mirko SalomΓ³n Alva SΓ‘nchez

Affiliation: Graduate Program in Information Technologies and Health Management, University of Porto AlegreFederal University of Health Sciences of Porto Alegre, Universidad Tecnologica del Peru, Pontificia Universidad Catolica del Peru, Electronic Engineering Department, Leonard Cancer Institute - Radiation Oncology, Universidad Nacional de Ingenieria, Universidad Nacional de Ingenieria, Electronic Engineering Department, Federal University of Sergipe, HRS Oncology International, Universidad Nacional Federico Villareal

Abstract Preview: Purpose: Provide Monte Carlo (MC) and experimental dosimetric assessments of a 3D cubic electronic detector array based on percent depth doses (PDDs), profiles, linearity, and dose rate response of ph...

Impact of Ion Chamber Selection on Enhanced Leaf Modeling Predictions of Dosimetric Leaf Gap and Leaf Transmission Factors

Authors: Michael Ashenafi, Nicholas Becerra Espinosa, Mario Ramos Gallardo, Matthew Pacella, Sean M. Tanny

Affiliation: Department of Radiation Oncology, University of Rochester

Abstract Preview: Purpose: A new multileaf collimator (MLC) model has been introduced in Varian Eclipse v18.0, with the treatment planning system (TPS) explicitly modeling the leaf end effects. The vendor recommends a ...

Multi-Vendor Linac Isocenter Evaluation: Implications for SRS in Radiotherapy

Authors: Blessing Chinelo Akah, Brad Barhorst, Daniel W. Neck, David J. Perrin, Chad Robertson, Sotirios Stathakis

Affiliation: Mary Bird Perkins Cancer Center

Abstract Preview: Purpose: To evaluate the performance and radiation isocenter of Elekta and Varian linear accelerator using Aktina Isopoint.
Methods: The Aktina Isopoint was used to measure the physical and radiati...

Streamlined Stereotactic Radiosurgery (SRS) Commissioning Experience with a 6FFF Beam for an Elekta Versa: A Clinical Overview for Increased Precision.

Authors: Asma Amjad, Slade J. Klawikowski, Natalya V. Morrow, Haidy G. Nasief, Eric S. Paulson, An Tai, Hualiang Zhong

Affiliation: Department of Radiation Oncology, Medical College of Wisconsin

Abstract Preview: Purpose: Accurate and precise linac-based SRS commissioning can be very challenging. Thus, it is important to increase the confidence in the measurement at each step prior to end-to-end testing. The p...

Ultra-Fast Commissioning and Quality Assurance with Plastic Scintillation Detector

Authors: Saad Bin Saeed Ahmed, Marcos Feijoo, Wazir Muhammad, Charles Shang, Naseem Ud Din

Affiliation: South Florida Proton Therapy Institute, Miami Cancer Institute, Blue Physics LLC, Florida Atlantic University

Abstract Preview: Purpose: Accurate, efficient, and reliable commissioning of linear accelerator (LINAC) is critical for ensuring high-quality radiation therapy treatments. The study uses advanced detector technology a...

Using a-Si 1200 Epid Portal Dosimetry for VMAT Commissioning

Authors: Ryan Burri, Nazanin Hoshyar, Jerry W. McCoy, Yulin Song, Huma Syed

Affiliation: Bay Pines VA Medical Center

Abstract Preview: Purpose: The study aimed to streamline traditionally manual, iterative, and time-consuming VMAT commissioning process. The goal was to identify an optimal set of MLC dosimetric parameters that minimiz...