Search Submissions 🔎

Results for "flatness symmetry": 12 found

6FFF Beam Output Trend Showing Target Degradation

Authors: Sean L. Berry, Hsiang-Chi Kuo, Seng Boh Gary Lim, Ingrid Valencia Lozano, Laszlo Voros

Affiliation: Department of Medical Physics, Memorial Sloan Kettering Cancer Center

Abstract Preview: Purpose:
To quantify the impact of target degradation on 6FFF beam output by analyzing the output trends and adjustment frequencies at our clinic on a flattening filter-free (6FFF) and a flattened ...

A Novel Device for Radiation Therapy Machine Quality Assurance

Authors: Jonathan Dowell, Grace Francis, Wei Luo, Shane McCarthy, Janelle A. Molloy, Markus Murphy

Affiliation: University of Kentucky, Department of Radiation Medicine, University of Kentucky, Iridesce Solutions, Inc.

Abstract Preview: Purpose: A novel radiation therapy quality assurance (RT QA) device has been designed, constructed and tested. The nüFilmTM machine QA system provides a method for collecting light, mechanical and rad...

An Assessment of the Potential Impact of the Elekta Unity’s 1.5T Magnetic Field upon the Performance of a Conventional Linac Installed in an Adjacent Vault: A Case Study

Authors: Matthew Stephen Andriotty, Taoran Cui, Josh Kilian-Meneghin, Ke Nie, Xiao Wang, Zhenyu Xiong, Ning J. Yue, Yin Zhang

Affiliation: Rutgers Cancer Institute of New Jersey, RWJBarnabas Health

Abstract Preview: Purpose: To investigate the potential impact of the Elekta Unity’s 1.5T magnetic field upon the performance of a conventional linac installed in an adjacent vault.
Methods: The linac vaults for thi...

Developing Metrics for Evaluating Machine Matching across Elekta Linear Accelerators in a Multicenter Clinic

Authors: Ashley Elizabeth Bonner, Michael G. Snyder

Affiliation: Corewell Health William Beaumont University Hospital, Department of Radiation Oncology, Corewell Health William Beaumont University Hospital

Abstract Preview: Purpose: Develop and evaluate metrics for assessing beam matching of profiles across Elekta linacs in a multisite clinical setting.
Methods: Four Elekta linear accelerators (three VersaHD and one A...

Experience in Commissioning and Quality Assurance of Halcyon Linear Accelerator Ver3.0 at a Community Hospital and an Academic Institution

Authors: Emily Y. Hirata, Xiaoyu Sherry Liu, Evan Porter, Manju Sharma

Affiliation: University of California San Francisco, University of California, San Francisco, University of California

Abstract Preview: Purpose:
The Varian Halcyon Linear Accelerator has become increasingly popular in both community hospitals and academic institutions due to its user-friendly design and operational efficiency. This...

Feasibility Study of the Auger Electron Radiation Therapy

Authors: Chen-Ju Feng, Shih-Ming Hsu, Chin-Hsiung Lin, Shih-Yong Luo, Shao-Chun Tseng, Chin-Hui Wu, Ya-Ru Yang

Affiliation: National Yang Ming Chiao Tung University, Koo Foundation Sun Yat-Sen Cancer Center, Tzu-Chi University, NanoRay Biotech Co., Ltd

Abstract Preview: Purpose: The range of auger electrons in water is 2~500 nm, and its linear energy transfer reaches 26 keV/μm. This study investigated the feasibility of the auger electron radiation therapy.
Method...

Feasibility and Consistency of a Quad Wedge with a 2D Detector Array for Routine Quality Assurance on a MR-Linac

Authors: Grace Hutchinson, Daniel E. Hyer, Samuel D. Rusu, Blake R. Smith, Joel J. St-Aubin

Affiliation: Iowa Health Care, University of Iowa

Abstract Preview: Purpose: To assess the feasibility and consistency of the Sun Nuclear Corporation (SNC) MR conditional Quad Wedge, as an accessory to the IC Profiler-MR, and to evaluate beam output and energy in the ...

Mobetron Quality Assurance Tools

Authors: Robert A. Dahl

Affiliation: Mayo Foundation

Abstract Preview: Purpose: To develop tools to simplify/accelerate the quality assurance testing of the Mobetron mobile linear accelerator and increase safety when moving it to different OR’s.

Methods: The Mobet...

Radiation Dosimetry Using Optically Stimulated Luminescence Detection from Luxel with a CCD Camera System

Authors: Mohammad Nazmul Alim, Regina DeWitt

Affiliation: Department of Physics, East Carolina University,, Department of Physics, East Carolina University

Abstract Preview: Purpose: This study quantifies the ability of Luxel (Al₂O₃:C) to measure radiation dose from a Moxtek X-ray source. Key aspects of OSL dosimetry, including OSL curves, dose response, depth dose, and b...

Streamlining Orthovoltage QA: Feasibility of IC Profiler Dosimetry and Workflow Optimization

Authors: Huixiao Chen, Zhe (Jay) Chen, MinYoung Lee, Sameer Taneja

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

Abstract Preview: Purpose: Superficial radiation therapy uses low-energy x-rays to treat various types of cancers, including non-melanoma skin cancers, and dermatological conditions such as keloid scars, mycosis fungoi...

Towards Clinical Translation: Optical Methods Deliver in-Vivo per-Pulse Dosimetry in Electron Flash-RT

Authors: Petr Bruza, Rafael Carballeira, Megan Clark, David J. Gladstone, Austin Sloop, Roman Vasyltsiv, Kevin Jacob Willy

Affiliation: Dartmouth College, Thayer School of Engineering, Dartmouth College

Abstract Preview: Purpose: Develop an optical dosimetry system to accomplish standard of care on-patient dosimetry and pretreatment quality assurance for ultra-high dose rate (UHDR) electron therapy ahead of human tria...

Validation of a Novel Dielectric Layer-Based Detector for Linear Accelerator Quality Assurance

Authors: Dong Wook Kim, Jin Sung Kim, Dongho Lee, Sangmin Lee

Affiliation: Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South)

Abstract Preview: Purpose:
This study aims to analyze the characteristics of a novel detector based on a dielectric layer (Vieworks Co., Korea), which demonstrates high tolerance to high radiation doses and light tr...