Linac Commissioning Overview

Slides:



Advertisements
Similar presentations
Acceptance Testing and Commissioning of Modern Day Linacs
Advertisements

IAEA Quality Audits in Radiotherapy
Dosimetry Audit in Radiotherapy, in Greece Costas J. Hourdakis, A. Boziari & V. Kamenopoulou Greek Atomic Energy Commission, EEAE Athens, 12 September.
Backscatter for EPID dosimetry
Ionization Chamber Array for External Beam Radiotherapy
RapidArc plan verification using ArcCHECK™
The Tomotherapy Experience at Advocate Good Samaritan Hospital
Radiation Therapy Safety Standards
FDA-QA-DAS/2010 FDA’s Public Meeting: Device Improvements to Reduce the Number of Under-doses, Over-doses, and Misaligned Exposures from Therapeutic Radiation.
Medical Physics Support of Linear Accelerators. Overview of Physics Support Accelerator safety issues Accelerator safety issues Task Group Report #35.
Photon Beam Monitor-Unit Calculations
The TrueBeam System ™ Clinic Name Presenter’s name Clinic location
Alamance Regional Cancer Center 2012
Arizona’s First University. Feasibility of Image-Guided SRS for Trigeminal Neuralgia with Novalis.
Lotte Verbunt Investigation of leaf positioning accuracy of two types of Siemens MLCs making use of an EPID.
Development of an equipment and calibration verification framework Martin Green, Richard Clements.
Quality Assurance: Manufacturer & Clinical Aspects  Alan Cohen, M.S. DABR  Paul Naine, MSc. MIPEM  Jim Schewe, PhD, DABMP Accuray Incorporated Elekta.
Food and Drug Administration Public Meeting June 9-10: Quality Assurance of Therapeutic Medical Devices In Radiation Oncology Nabil Adnani, Ph.D., DABR.
Beam Therapy Equipment 3 Patient Treatment and Accessories.
Impacting Radiotherapy Safety and QA with Device Improvements Benedick A Fraass, PhD, FAAPM, FASTRO, FACR Allen S. Lichter Professor of Radiation Oncology.
11. – , Athens 8th European Conference on Medical Physics DOSIMETRY AUDITS IN RADIOTHERAPY IN THE CZECH REPUBLIC Irena Koniarová Daniela Ekendahl.
Automated Image Analysis Software for Quality Assurance of a Radiotherapy CT Simulator Andrew J Reilly Imaging Physicist Oncology Physics Edinburgh Cancer.
Radiation Protection in Radiotherapy
TWO FIELD BREAST PLAN VS. OPTIMIZED CONFORMAL BREAST PLAN: COMPARISON OF PLAN PARAMETERS Authors: Borko Basarić, Ozren Čudić, Milan Teodorović, Borislava.
Quality Control in Radiation Therapy, A New Concept: Dosimetry Check
Better Outcomes Through Technology. Patient Specific QA Tools.
Department of Radiation Oncology Henry Ford Health System
External Beam Radiation Therapy Special Procedures
Quality Assurance for a modern treatment planning system
Kelly Younge, Ph.DKelly Younge, Ph.D Don Roberts, Benedick Fraass, Daniel McShan, and Martha Matuszak University of Michigan, Department of Radiation Oncology,University.
Radiation Protection in Radiotherapy
In vivo dosimetry Eirik Malinen Eva Stabell Bergstrand Dag Rune Olsen.
The RPC Proton Therapy Approval Process
Institute for Advanced Radiation Oncology
Medical Accelerator F. Foppiano, M.G. Pia, M. Piergentili
Integrating the Health Care Enterprise- Radiation Oncology Use Case: In Vivo Patient Dosimetry Editor: Juan Carlos Celi - IBA Reviewer: Zheng Chang – Duke.
6. Clinical implementation and SBRT quality assurance
Use of the IC Profiler detector array for comprehensive machine QA ESTRO QA & Dosimetry Satellite Symposium Steve Morgan, Medical Physics Dept,
1 A Comprehensive Study on the Heterogeneity Dose Calculation Accuracy in IMRT using an Anthropomorphic Thorax Phantom S Davidson 1, R Popple 2, G Ibbott.
“RADIATION ONCOLOGY 101” FOR THE HTM SERVICE PROFESSIONAL
Introduction The Radiological Physics Center (RPC) anthropomorphic quality assurance (QA) phantom program is one tool the RPC uses to remotely audit institutions.
Somvilai Mayurasakorn, MD. Division of Therapeutic Radiology and Oncology, Faculty of Medicine, Chiang Mai University Somvilai Mayurasakorn, MD. Division.
Introduction to Radiation Therapy
TLD POSTAL DOSE QUALITY AUDIT FOR 6MV AND 15MV PHOTON BEAMS IN RADIOTHERAPY CLINICAL PRACTICE Sonja Petkovska 1, Margarita Ginovska 2, Hristina Spasevska.
T. Fleck, GSI, Darmstadt, Germany ICALEPCS Status of the Control System for HICAT at an advanced stage of Commissioning Functions, Restrictions.
IAEA Regional Meeting June 07 National Workshop June 07 Expert Visit to Facilities 29 June-1 July 07 Orientation 15 July 07 Competency Training.
Medical Physics starts firstly (1960s)at Division of Radiotherapy, Siriraj Hospital. Division of Nuclear Medicine, Siriraj Hospital Division of Radiation.
The Effects of Small Field Dosimetry on the Biological Models Used In Evaluating IMRT Dose Distributions Gene Cardarelli,PhD, MPH.
MCS overview in radiation therapy
Adapting A Clinical Medical Accelerator For Primary Standard Dosimetry
EPID BASED QA The future ? Motivation – reduce QA burden Too much QA.
AAPM TG-51 Protocol (Med Phys 26: , 1999)
CONFIDENTIAL MATERIAL Michele Togno - II Annual ARDENT Meeting, Milan – October, 14 th D Ionization Chambers Array for Clinical Applications.
Qing Liang, PhD Medical Physicist Mercy Health System, Janesville, WI
SIMULATION CHECK LIST IMAGING PROTOCOL.
Dr. Malhar Patel DNB (Radiation Oncology)
IAEA E-learning Program
CHAPTER 3 DOSE DETERMINATION FOR EXTERNAL BEAMS
Very High Energy Electron for Radiotherapy Studies
INTRODUCTION RESULTS DATA ANALYSIS DISCUSSION METHODS REFERENCES
Chapter 17 Quality Assurance
IAEA E-learning Program
OpenGate Technical Meeting May 11th 2017 Clermont-Ferrand
by G.H. Hartmann (Heidelberg, DKFZ) Comments to S. Vatnitsky:
RSNA Meeting, Chicago, IL
LINAC OPS Budget Review
Novalis Frameless Radiosurgery
Chapter 17 Intensity-Modulated Radiation Therapy
Hot and cold spots are common problems associated with planning:
GHG meeting at ESTRO36 May, 2017
Presentation transcript:

Linac Commissioning Overview Departments of Oncology and Medical Biophysics Linac Commissioning Overview Jacob (Jake) Van Dyk Western University London, Ontario, Canada 26 October 2017

Objective To provide an overview of linac commissioning process Relates to ‘sensitivity to infrastructure’

Consider Basic 6 MV Linac with MLC, EPID & 3D CRT Assume technology is mature Steps in clinical implementation Installation … by vendor Acceptance testing … by Medical Physicist with vendor Commissioning … by Medical Physicist On-going QC … by MP, MP assistant, or RTT

Requirements for Clinical Implementation Qualified Medical Physicist Dosimetry tools Calibrated ion chamber + thermometer, barometer 3D water phantom, dosimetry scanning system Additional ancillary tools: front pointer, level, …

Acceptance Testing 3-5 days To prove accelerator meets specifications Radiation safety tests Interlocks Mechanical tests Light/radiation field tests Parameter readouts … collimator, gantry, couch, lasers Isocentre coincidence (radiation/mechanical) Beam energy, flatness, symmetry Dose delivery … reproducibility

Commissioning 2-3 months Data for treatment planning system Beam calibration Depth dose Dose profiles Output factors Beam modifier or beam mode measurements Data for special procedures TBI, stereotactic, … Staff training Documented operational policies and procedures Procedures for scheduled & unscheduled down-times

Quality Control On-going tests to prove compliance Daily (possibly by RTTs) Weekly Monthly Yearly Documented process with tolerances and policies and procedures What to do when measurements are outside of tolerance Responsibility … Medical Physicist

Other Options Multiple photon and electron energies Similar data for TPS for each energy Added QC IMRT/VMAT See AAPM TG and other reports Treatment planning integrity MLC delivery Patient specific QC IGRT Geometric & image registration integrity Med. Phys. 36: 4197-4212; 2009 Med. Phys. 39: 1946-1963; 2012

New Technologies TomoTherapy Installed precommissioned Acceptance testing is almost  commissioning Time from installation to clinical treatment much reduced Varian Halcyon Similar precommissioning Varian … “accelerated installation timeframes, expedited commissioning, simplified training, and automated treatment.” Requires stable technologies with reproducible characteristics from factory to clinic Med. Phys. 37: 4817-4853; 2010 et al.

Linac Commissioning/QC Summary Linac implementation and QC is challenging Common QA elements to fully loaded linac commissioning Team effort Training Safety Detailed commission measurements Dose delivery accuracy Detailed TPS commissioning Image quality Geometric fidelity Scaling Treatment-imaging isocenter coincidence Registration/table shifts Policies/procedures/criteria for adjustment

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.