Monitor Unit Calculations Part 1. Return to our first patient. Purpose. 62 yr old woman with Stage IIIB (T1N3M0) NSCLC rt lower lobe Dose prescription
|
|
- Brandon Roberts
- 6 years ago
- Views:
Transcription
1 Monitor Unit Calculations Part 1 George Starkschall, Ph.D. Department of Radiation Physics U.T. M.D. Anderson Cancer Center Return to our first patient 62 yr old woman with Stage IIIB (T1N3M0) NSCLC rt lower lobe Dose prescription 6 MV x-rays x 1.8 Gy/fraction x 35 fractions IMRT How long do we leave the linac on? Purpose To provide a methodology for the calculation of machine settings Rather than specifying a particular method for calculating machine settings, we will provide a consistent methodology that allows selection of a particular set of measurement conditions to ensure consistency in the machine setting calculations 1
2 A caveat Different institutions have different methodologies for calculating machine settings All methodologies may be correct, provided they are consistent Goal of calculation Calculate dose delivered to small mass of tissue at a specified point within patient, given a set of physical beam parameters Goal of calculation Beam parameters include: 1. Machine radiation type and energy 2. Machine output 3. Field size 4. Depth 5. Beam modifiers 2
3 Achieving this goal Brute force method: Simulate beam configuration on phantom and measure dose per monitor unit Likely to be very time-consuming But this is what we presently do for some cases: IMRT Protons Some clinics do this for electrons, as well Achieving this goal Can we calculate the dose per monitor unit instead? Yes, at least for photons and electrons Goal is to be able to do this for protons as well Achieving this goal Relate dose to small mass of tissue in patient to reference dose Measure reference dose Calculate desired dose 3
4 Calculation of machine setting reference dose machine setting =, reference dose output reference dose output = calibration dose output correction for collimator setting correction for distance from source. correction for beam modifiers correction for attenuation and scatter Calculation of machine setting All these corrections have previously been measured in a water phantom when the treatment machine was commissioned All these corrections are readily available in tables and can be looked up Important to have access to these tables Hard copy Computer files Reference dose Dose prescriptions must be expressed as point dose Dose prescribed to be delivered to isocenter Dose prescribed as percentage of isocenter dose Example: Prescription: 180 cgy to isocenter Prescription: 200 cgy to 95% of isocenter Convert this to isocenter dose: 200/0.95=211 cgy to isocenter 4
5 A common blunder 200 cgy to the 95% line 95% of what? Must specify isocenter, or maximum dose, or reference point dose MDACC prescription methodology We often prescribe an implied minimum target volume dose 180 cgy means the entire target volume receives 180 cgy Really a more descriptive prescription than a point dose prescription This is converted by the treatment planning system into a point dose prescription Reference dose For isocentric treatments Dose prescribed to be delivered to isocenter Example: Prescription 180 cgy from 3 equally weighted fields Reference dose 60 cgy for each field 5
6 Reference dose For isocentric treatments Dose prescribed to be delivered to isocenter Example: Prescription 180 cgy from 2 fields weighted 2:1 Reference dose 120 cgy for the heavier- weighted field, 60 cgy for second field Reference dose For fixed SSD treatments Given dose for treatment field Given dose can be found by dividing prescription dose by percent depth dose (%dd) Percent depth dose defined later Not used as much any more for photon treatments Will address electrons and protons later Reference dose For treatments where dose distribution extracted from treatment planning system Reference dose is some other dose Reference dose may not even be actual point dose, rather dose to defined point from hypothetical field 6
7 Reference dose Reference dose must be identified as dose to a specific point Prescription based on mean dose or dose coverage must be converted to reference dose by treatment planning system Definition of reference dose may be treatment planning system specific Calibration dose output Dose output of treatment machine For linac calibrated to deliver 1.0 cgy/mu for 10 cm 10 cm field at d max Because output is pulsed, a transmission ion chamber is placed in beam path Monitor units are arbitrary units recorded by the ion chamber For cobalt machine calibration dose output is measured (expressed in cgy/min) Output is constant Calibration dose output Calibration dose output may be specified in air or in tissue (or tissue-equivalent equivalent phantom) For cobalt and low-energy linac photons may be specified in air or phantom For high-energy photons specified in phantom 7
8 Calibration dose output Necessary to know at what depth value is defined Typically at d max Could be at other reference depth, e.g., TG-51 depth specification TG-51 mandates that calibration measurement be done at fixed depth (5 cm or 10 cm), then converted back to d max Calibration dose output Necessary to know at what distance from source value is defined May be equal to source to isocenter distance (SAD) May be equal to SAD + d max, i.e., phantom surface is placed at source to isocenter distance and calibration point at depth d max Calibration dose output At MDACC, 1 cgy/mu specified as follows: 10 cm 10 cm field In phantom at depth d max At distance from source SAD + d max, i.e., phantom surface placed at SAD At other institutions, 1 cgy/mu may be specified differently 8
Monitor Unit Calculations Part 2. Calculation of machine setting. Collimator setting
Monitor Unit Calculations Part 2 George Starkschall, Ph.D. Department of Radiation Physics U.T. M.D. Anderson Cancer Center Calculation of machine setting reference dose machine setting =, reference dose
More informationReview of fundamental photon dosimetry quantities
Review of fundamental photon dosimetry quantities Narayan Sahoo Main sources of the materials included in this lecture notes are: (1) Radiation Oncology Physics: A Handbook for Teachers and Students Edited
More informationRelative Dosimetry. Photons
Relative Dosimetry Photons What you need to measure! Required Data (Photon) Central Axis Percent Depth Dose Tissue Maximum Ratio Scatter Maximum Ratio Output Factors S c & S cp! S p Beam profiles Wedge
More information1. Question Answer cgy / MU cgy / MU 2. Question Answer
GS020113: Introduction to Medical Physics III: Therapy s to home work problem set assigned on 3/22/11 1. Question A patient is set up at 100 cm SSD on a 6 MVX machine. The dose rate at 10 cm in phantom
More informationDosimetric Calculations. Lonny Trestrail
Dosimetric Calculations Lonny Trestrail 20 October 2008 Objectives Dose Distribution Measurements PDD, OCR TAR, SAR, TPR, TMR, SPR, SMR Arc or Rotational Therapy Isodose Curves Point Dose Calculations
More informationOutline. Chapter 11 Treatment Planning Single Beams. Patient dose calculation. Patient dose calculation. Effect of the curved contour surface
Chapter 11 reatment Planning Single Beams Radiation Dosimetry I Outline Basic terminology Curved contour surface correction (bolus, compensators, wedges) Oblique beam incidence Correction for tissue inhomogeneities
More informationField size and depth dependence of wedge factor for internal wedge of dual energy linear accelerator
Journal of BUON 8: 55-59, 2003 2003 Zerbinis Medical Publications. Printed in Greece ORIGINAL ARTICLE Field size and depth dependence of wedge factor for internal wedge of dual energy linear accelerator
More informationMath Review. Overview
Drawn by Steve Yan, CMD Math Review Shirley Ann Pinegar-Johnston MS RT(R)(T)CMD Overview Drawn by Steve Yan, CMD Divergence & Intensity DIVERGENCE X-rays travel in Straight but Divergent lines INTENSITY
More informationClinical Implementation of the TG-51 Protocol. David Followill Radiological Physics Center Houston Texas
Clinical Implementation of the TG-51 Protocol David Followill Radiological Physics Center Houston Texas Current Implementation Status Current Implementation Status 1600 1400 TOTAL 1494 of 1623 ACTIVE INSTITUTIONS
More informationCommissioning an IMRT System for MLC Delivery. Gary A. Ezzell., Ph.D. Mayo Clinic Scottsdale
Commissioning an IMRT System for MLC Delivery Gary A. Ezzell., Ph.D. Mayo Clinic Scottsdale Taking the broad view of commissioning Commissioning elements Validating the dosimetry system Commissioning the
More informationOnly 8% to go. TOTAL 1494 of 1623 ACTIVE INSTITUTIONS (92%) May-09. May-04 Nov-04. May-07. Nov-02 May-03. Nov-05. Nov-06. Nov-07 May-08.
Clinical Implementation of the TG-51 Protocol David Followill Radiological Physics Center Houston Texas 2009 AAPM Summer School Educational Objectives Improve your understanding of how to implement TG-51
More informationJOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 3, NUMBER 4, FALL 2002
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 3, NUMBER 4, FALL 2002 Comparison of monitor unit calculations performed with a 3D computerized planning system and independent hand calculations: Results
More informationCLINICAL IMPLEMENTATION OF RAPIDARC Treatment Planning Strategies to Improve Dose Distributions
CLINICAL IMPLEMENTATION OF RAPIDARC Treatment Planning Strategies to Improve Dose Distributions Rebecca M. Howell, Ph.D., D.A.B.R, The University of Texas at M.D. Anderson Cancer Center Overview 2 Commissioning
More informationCommissioning of Elekta 6MV FFF Versa HD and Pinnacle
Commissioning of Elekta 6MV FFF Versa HD and Pinnacle Poster No.: R-0044 Congress: Type: Authors: Keywords: DOI: 2014 CSM Scientific Exhibit L. Bendall, I. Patel, N. McGrath, C. Rowbottom; MANCHESTER/
More informationThe MC commissioning of CyberKnife with MLC (Tips and Tricks)
The MC commissioning of CyberKnife with MLC (Tips and Tricks) Alain Guemnie Tafo, PhD UPMC Pinnacle, Harrisburg, PA Institute Gustave Roussy, Villejuif, France Disclaimer & Disclosure The views expressed
More informationCHAPTER 4 PRE TREATMENT PATIENT SPECIFIC QUALITY ASSURANCE OF RAPIDARC PLANS
47 CHAPTER 4 PRE TREATMENT PATIENT SPECIFIC QUALITY ASSURANCE OF RAPIDARC PLANS 4.1 INTRODUCTION Advanced treatment techniques use optimized radiation beam intensities to conform dose distribution to the
More informationSnapShot IMRT with compensators and FFF beams
SnapShot IMRT with compensators and FFF beams Vladimir Feygelman, PhD (1) Moffitt Cancer Center, Tampa, FL, USA Disclosure VF has a sponsored research agreement with.decimal. A short history of radiotherapy
More informationClinical Implementation of the IPEM 2003 Code of Practice for Electron Dosimetry
Clinical Implementation of the IPEM 2003 Code of Practice for Electron Dosimetry Tom Jordan Royal Surrey County Hospital IPEM Electron Dosimetry Working Party: + DI Thwaites, AR DuSautoy, MR McEwen, AE
More informationTG-119 IMRT Commissioning Tests Instructions for Planning, Measurement, and Analysis Version 10/21/2009
TG-119 IMRT Commissioning Tests Instructions for Planning, Measurement, and Analysis Version 10/21/2009 DISCLAIMER: This publication and associated spreadsheets and digital files are based on sources and
More informationClinical Implementation of Volumetric Modulated Arc Therapy
Clinical Implementation of Volumetric Modulated Arc Therapy UT M.D. Anderson Cancer Center Ramaswamy Sadagopan, Rebecca M. Howell, Weiliang Du and Peter Balter Definition 2 Intensity Modulated Arc therapy
More informationIntroduction. Introduction. The CyberKnife SRS/SBRT System. Introduction. Contour Structures. CyberKnife Components
Introduction The CyberKnife SRS/SBRT System James M. Hevezi,, Ph.D., FACR CyberKnife Unit San Antonio, Texas CyberKnife Components Treatment Delivery (G3 Platform San Antonio) Robot (modified German auto
More information13 QUALITY ASSURANCE OF A LINEAR ACCELERATOR 13.1 COLLIMATOR ISOCENTER, JAWS, LIGHT FIELD VS INDICATORS, COLLIMATOR ANGLE INDICATORS.
13 QUALITY ASSURANCE OF A LINEAR ACCELERATOR 13.1 COLLIMATOR ISOCENTER, JAWS, LIGHT FIELD VS INDICATORS, COLLIMATOR ANGLE INDICATORS. 13.1.1 TRAINING GOAL 13.1.1.1 Among the responsabilities of a medical
More informationThe Royal Australian and New Zealand College of Radiologists. FRANZCR Examination Part I Radiation Oncology. Radiotherapeutic Physics.
FRANZCR Examination Part I Radiation Oncology Radiotherapeutic Physics Candidate No.: The Royal Australian and New Zealand College of Radiologists FRANZCR Examination Part I Radiation Oncology Radiotherapeutic
More informationConstancy checks of well-type ionization chambers with external-beam radiation units
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 16, NUMBER 6, 2015 Constancy checks of well-type ionization chambers with external-beam radiation units Sara L. Hackett, 1a Benjamin Davis, 2 Andrew
More informationTHE development of more advanced techniques in radiotherapy,
1 A Geant4-based simulation of an accelerator s head used for Intensity Modulated Radiation Therapy F. Foppiano, B. Mascialino, M.G. Pia, M. Piergentili. Abstract We present a Geant4-based simulation,
More informationANALYSIS OF OFF-AXIS ENHANCDED DYNAMIC WEDGE DOSIMETRY USING A 2D DIODE ARRAY A CREATIVE PROJECT (3 SEMESTER HOURS) SUBMITTED TO THE GRADUATE SCHOOL
ANALYSIS OF OFF-AXIS ENHANCDED DYNAMIC WEDGE DOSIMETRY USING A 2D DIODE ARRAY A CREATIVE PROJECT (3 SEMESTER HOURS) SUBMITTED TO THE GRADUATE SCHOOL FOR THE DEGREE MASTER OF ARTS BY CHARLES TRAVIS WEBB
More informationIMRT in clinical practice at the UMC-Utrecht. Utrecht
3 IMRT in clinical practice at the UMC-Utrecht Utrecht Clinical use of IMRT Improvement of local control without increased incidence of normal tissue complications + Dose escalation in the prostate Step-and
More informationCommissioning and quality assurance of a commercial intensity modulated radiotherapy (IMRT) treatment planning system PrecisePLAN
22 Turkish Journal of Cancer Volume 37, No.1, 2007 Commissioning and quality assurance of a commercial intensity modulated radiotherapy (IMRT) treatment planning system PrecisePLAN SATISH PELAGADE 1, KALPANA
More informationMonitor Unit Verification for Small Fields
Monitor Unit Verification for Small Fields Patrick Higgins, Ph.D University of Minnesota Department of Radiation Oncology October 10, 2013 The Issues: How do we verify the monitor units calculated by the
More informationPractical Course in Reference Dosimetry, National Physical Laboratory February 2014 MV Photon Dosimetry in the Clinic Page 1 of 11
MV Photon Dosimetry in the Clinic This document discusses both the scientific methods and the system of work required to calibrate a field instrument expanding upon the practical details of both.. Introduction
More informationTG-51: Experience from 150 institutions, common errors, and helpful hints
TG-51: Experience from 150 institutions, common errors, and helpful hints Ramesh C. Tailor, Ph. D., William F. Hanson, Ph.D., and Geoffrey S. Ibbott, Ph.D. Department of Radiation Physics, University of
More informationPlanning Assignment (3 field rectum)
Megan Sullivan Clinical Lab Rectum April 25, 2016 Planning Assignment (3 field rectum) Use a CT dataset of the pelvis. Create a CTV by contouring the rectum (start at the anus and stop at the turn where
More informationHow to Design Medical Accelerator Systems for Reliability: IBA PT System
How to Design Medical Accelerator Systems for Reliability: IBA PT System Yves Jongen Founder & Chief Research Officer Ion Beam Applications s.a. Belgium 1 Outline A short introduction of a proton therapy
More informationZoubir Ouhib Lynn Cancer Institute
Zoubir Ouhib Lynn Cancer Institute April 2015 Speaker for ELEKTA Brachytherapy using miniature X-ray sources Energy
More informationCommissioning and periodic tests of the Esteya electronic brachytherapy system
Review paper Educational Activity Commissioning and periodic tests of the Esteya electronic brachytherapy system Cristian Candela-Juan, PhD 1, Yury Niatsetski, MSc 2, Zoubir Ouhib, PhD 3, Facundo Ballester,
More informationHigh Speed Direct SAD Radiosurgery Beam Scanner
Open Access Original Article DOI: 10.7759/cureus.20 High Speed Direct SAD Radiosurgery Beam Scanner Walter Nikesch 1, James M. Hevezi 2, Irene Monterroso 3, Daniel Navarro 4, James G. Schwade 5 1. CyberKnife
More informationAAPM s TG-51 protocol for clinical reference dosimetry of high-energy photon and electron beams
AAPM s TG-51 protocol for clinical reference dosimetry of high-energy photon and electron beams Peter R. Almond Brown Cancer Center, Louisville, Kentucky 40202 Peter J. Biggs Department of Radiation Oncology,
More informationAbstract: Introduction:
Are photon and electron beam calibrations more consistent with TG-51 than with TG-21? Ramesh C. Tailor, William F. Hanson, Nathan Wells, and Geoffrey S. Ibbott. U.T. MD Anderson Cancer Center, Houston
More informationElectronic Oncology Systems the Management and the Safety Measures. Hansen Chen, Director, TDSI
Electronic Oncology Systems the Management and the Safety Measures Hansen Chen, Director, TDSI Radiation Oncology Department People Place Equipments Procedures Patients Hansen Chen 2 Radiation Oncology
More informationA simple theoretical verification of monitor unit calculation for intensity modulated beams using dynamic mini-multileaf collimation
Radiotherapy and Oncology 71 (2004) 235 241 Technical Note A simple theoretical verification of monitor unit calculation for intensity modulated beams using dynamic mini-multileaf collimation Nadine Linthout*,
More informationScientific Journal of Nuclear Medicine & Radiation Therapy
Scientific Journal of Nuclear Medicine & Radiation Therapy Research Article Radiotherapy Dose Calculation Program, for Monitoring and Commissioning Treatment Planning Systems - Ioannis Vamvakas*, Stella
More informationGEANT4 SIMULATION OF AN ACCELERATOR HEAD FOR INTENSITY MODULATED RADIOTHERAPY
The Monte Carlo Method: Versatility Unbounded in a Dynamic Computing World Chattanooga, Tennessee, April 17-21, 2005, on CD-ROM, American Nuclear Society, LaGrange Park, IL (2005) GEANT4 SIMULATION OF
More informationTreatment Planning Techniques for Larger Body Habitus Patients for Breast/Chestwall and Regional Lymph Nodal Irradiation
Treatment Planning Techniques for Larger Body Habitus Patients for Breast/Chestwall and Regional Lymph Nodal Irradiation By Ruth Ann M. Good, CMD. R.T. (R)(T) Virginia Commonwealth University, Richmond,
More informationA beam-matching concept for medical linear accelerators
Acta Oncologica, 2009; 48: 192200 ORIGINAL ARTICLE A beam-matching concept for medical linear accelerators DAVID SJÖSTRÖM, ULF BJELKENGREN, WIVIANN OTTOSSON & CLAUS F. BEHRENS Copenhagen University Hospital,
More informationExposure System Selection
Principles of Imaging Science II (RAD120) Exposure Systems Exposure System Selection Radiographic exposure is a very complex process Best technique systems manipulate one variable while holding others
More informationExperimental verification of a Monte Carlo-based MLC simulation model for IMRT dose calculations in heterogeneous media
Experimental verification of a Monte Carlo-based MLC simulation model for IMRT dose calculations in heterogeneous media N Tyagi 1, B H Curran, P L Roberson, J M Moran, E Acosta and B A Fraass Department
More informationAbsorption measurements for a carbon fiber couch top and its modelling in a treatment planning system
Absorption measurements for a carbon fiber couch top and its modelling in a treatment planning system G. Kunz, F. Hasenbalg, P. Pemler 1 1 Klinik für Radio-Onkologie und Nuklearmedizin, Stadtspital Triemli
More informationOUTPUT at dmax in tissue 8x8 20x20 At 100cm SSD At 100cm SAD
RAPHEX 2001 T1. All of the following are true regarding Percentage Depth Dose (PDD) except: A. Increases with increasing energy. B. Depends on field size. C. Is the dose at depth expressed as a % of the
More informationCommissioning of a new total body irradiation protocol
University of Wollongong Research Online University of Wollongong Thesis Collection University of Wollongong Thesis Collections 2012 Commissioning of a new total body irradiation protocol Zoe Baldwin University
More informationThe Effect of Immobilisation Devices on Radiotherapy Dose Distributions. Alison Gray August 2007
The Effect of Immobilisation Devices on Radiotherapy Dose Distributions A thesis submitted in fulfilment of the requirements for the Degree of Master of Applied Science (Medical and Health Physics) By
More informationA dose delivery verification method for conventional and intensitymodulated radiation therapy using measured field fluence distributions
A dose delivery verification method for conventional and intensitymodulated radiation therapy using measured field fluence distributions Wendel Dean Renner a) Math Resolutions, LLC, 5975 Gales Lane, Columbia,
More informationInvestigation of Buildup Dose for Therapeutic Intensity Modulated Photon Beams in Radiation Therapy
University of South Florida Scholar Commons Graduate Theses and Dissertations Graduate School 7-14-2010 Investigation of Buildup Dose for Therapeutic Intensity Modulated Photon Beams in Radiation Therapy
More informationProton Therapy QA Tools
Proton Therapy QA Tools A complete range of tools for absolute dosimetry, machine QA and patient plan verification Introduction During the past years more and more heavy particle therapy centers, especially
More informationLarry A. DeWerd, Ph.D., FAAPM UW ADCL & Dept. of Medical Physics University of Wisconsin
Larry A. DeWerd, Ph.D., FAAPM UW ADCL & Dept. of Medical Physics University of Wisconsin NCCAAPM Meeting Oct 11,2013 Larry DeWerd has a partial interest in Standard Imaging Talks from people who have been
More information3D Treatment Planning and verification with hand calculations
3D Treatment Planning and verification with hand calculations Randy Holt, PhD, CEO Pacific Crest Medical Physics, Inc Chico, CA Dosimetric Calculations Calibration and Measurement Conditions Patient Conditions
More informationWEDGE FILTERS FOR MEGAVOLTAGE ROENTGEN RAY BEAMS
Acta Radiologica Oncology 23 (1984) Fusc. 6 FROM THE RADIATION THERAPY DEPARTMENT, ANTON1 VAN LEEUWENHOEK HOSPITAL, THE NETHERLANDS CANCER INSTITUTE, AMSTERDAM, THE PHILIPS MEDICAL SYSTEMS DIVISION, BEST,
More informationExradin Ion Chambers. What attributes make Exradin the smart choice? EXRADIN Ion Chambers
EXRADIN Ion Chambers Exradin Ion Chambers Exradin (EXacting RADiation INstrumentation) Ion Chambers have been built for over 33 years, are recognized by top research institutes and standards laboratories,
More informationThe dose distribution of medium energy electron boosts to the laryngectomy stoma
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 2, NUMBER 1, WINTER 2001 The dose distribution of medium energy electron boosts to the laryngectomy stoma Ellen D. Yorke* Memorial Sloan-Kettering Cancer
More informationComparison of ionization chambers of various volumes for IMRT absolute dose verification
Comparison of ionization chambers of various volumes for IMRT absolute dose verification Leonid B. Leybovich, a) Anil Sethi, and Nesrin Dogan Department of Radiation Oncology, Loyola University Medical
More informationBasics of Proton Therapy. Proton Treatment Planning and Beam Optimization
Basics of Proton Therapy Proton Treatment Planning and Beam Optimization SAM Educational Session, WE D BRB 2 Mark Pankuch, PhD Northwestern Medicine Chicago Proton Center Today s objectives Review the
More informationIntroduction. Materials and Methods
STANDARD WEDGE AND TRAY TRANSMISSION VALUES FOR VARIAN, SEIMENS, ELEKTA/PHILIPS ACCELERATORS; A QUALITY ASSURANCE TOOL David S. Followill, Nadia Hernandez, and William F. Hanson Introduction The Radiological
More informationImplementation of respiratory-gated VMAT on a Versa HD linear accelerator
Received: 21 November 2016 Revised: 7 April 2017 Accepted: 5 June 2017 DOI: 10.1002/acm2.12160 RADIATION ONCOLOGY PHYSICS Implementation of respiratory-gated VMAT on a Versa HD linear accelerator Jeffrey
More informationValidation of Treatment Planning Dose Calculations: Experience Working with Medical Physics Practice Guideline 5.a.
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, 6, 57-72 http://www.scirp.org/journal/ijmpcero ISSN Online: 2168-5444 ISSN Print: 2168-5436 Validation of Treatment
More informationRadiotherapy physics & Equipments
Radiotherapy physics & Equipments RAD 481 Lecture s Title: Beam Modification devices in Radiotherapy Dr. Mohammed Emam Vision :IMC aspires to be a leader in applied medical sciences, health care education
More informationkvue IGRT Couch top One couch top, multiple treatment solutions For Varian, Elekta, Siemens, Proton and more The Best of Both Worlds
TM kvue IGRT Couch top One couch top, multiple treatment solutions For Varian, Elekta, Siemens, Proton and more kvue The Best of Both Worlds kvue IGRT COUCH TOP One couch top, multiple treatment solutions
More informationIranian Journal of Medical Physics
Iranian Journal of Medical Physics ijmp.mums.ac.ir Verification of Monitor Unit Calculations for Eclipse Treatment Planning System by in-house Developed Spreadsheet Athiyaman Mayivaganan 1*, Hemalatha
More informationCharacteristics and Production of Gas Sealed, Radiation Hard, Small Ionization Chambers
Characteristics and Production of Gas Sealed, Radiation Hard, Small Ionization Chambers Mayda Velasco 1 Gianni Tassotto 3 on behalf of the SIC team P. Ball 2, A.Dabrowsky 1, G. Graham 2, C. Kendziora 3,
More informationCHAPTER-2. Wedge filters are the most important beam modifiers used in
CHAPTER-2 2. WEDGE FLTERS 2.1. NTRODUCTON Wedge filters are the most important beam modifiers used in radiotherapy which are placed in the path of photon beams to modify their isodose diistributions. The
More informationDisclosures. What Is So Hard? End of ITV: Gating is the Best ITV Killer 8/3/2016. Daniel A. Low, Ph.D. UCLA. Varian Grant Siemens Grant Accuray Grant
Real Timefullness 8/3/2016 End of ITV: Gating is the Best ITV Killer Daniel A. Low, Ph.D. UCLA Varian Grant Siemens Grant Accuray Grant Disclosures What Is So Hard? Light Ultrasound MRI X Ray Planar X
More informationCOMPASS. Dr. Lutz Müller. AK IMRT Bamberg April D IMRT Verification in Patient Anatomy
COMPASS 3D IMRT Verification in Patient Anatomy AK IMRT Bamberg April 2010 Dr. Lutz Müller Patient-specific Verification? CT Treatment unit Gantry =0 Treatmt unit Patient couch X-ray beam Patient couch
More informationRadiation Producing Machines Radiation Safety Training for X-ray Diffraction Units
INTRODUCTION Radiation Producing Machines Radiation Safety Training for X-ray Diffraction Units RADIATION SAFETY GUIDE IMAGING AND MICROSCOPY FACILITY University of California, Merced Training Document
More informationTG-61 deals with: This part of the refresher course: Phantoms. Chambers. Practical Implementation of TG-61:
Practical Implementation of TG-61: II. Guidelines for clinical implementation of TG-61 J.P. Seuntjens Medical Physics Unit McGill University, Montreal General Hospital Montréal, Canada jseuntjens@medphys.mcgill.ca
More informationReactor Networks. D. G. Goodwin Division of Engineering and Applied Science California Institute of Technology. Cantera Workshop July 25, 2004
Reactor Networks D. G. Goodwin Division of Engineering and Applied Science California Institute of Technology Cantera Workshop July 25, 2004 A Batch Reactor Continuously-Stirred Tank Reactors In a CSTR,
More informationEssential Performance for MED rd ed. PSES San Diego chapter meeting December 11, 2012
Essential Performance for MED 601-1 3 rd ed. Grant Schmidbauer, Nemko USA, Inc. PSES San Diego chapter meeting December 11, 2012 2012 PSES San Diego Chapter http://www.psessymposium.org/ 1 3.27 Essential
More informationVariable Depth Bragg Peak Test Method
Variable Depth Bragg Peak Test Method C. Foster (FCS), P. O Neill, B. Reddell (NASA/JSC), K. Nguyen, B. Jones (Jacobs Technology), N. Roche, S. Buchner (NRL) Acknowledgement: A. Rusek, M. Sivertz, and
More informationModeling of Hydraulic Hose Paths
Mechanical Engineering Conference Presentations, Papers, and Proceedings Mechanical Engineering 9-2002 Modeling of Hydraulic Hose Paths Kurt A. Chipperfield Iowa State University Judy M. Vance Iowa State
More informationOriginal Article. Effective Point of Measurement in Cylindrical Ion Chamber for Megavoltage Photon Beams
Iranian Journal of Medical Physics Vol. 10, No. 3, Summer 2013, 147-155 Received: April 22, 2013; Accepted: July 21, 2013 Original Article Effective Point of Measurement in Cylindrical Ion Chamber for
More informationTEST REPORT BEAMSCAN WITH HALCYON
TEST REPORT BEAMSCAN WITH HALCYON UZ Leuven, November 20 th, 2017 + = Ideal BEAMSCAN tank dimensions to fit perfectly into the Halcyon bore Fast tank positioning using the Halcyon lasers, no electronics
More informationUltrasound Dose Calculations
Ultrasound Dose Calculations One of the advantages of ultrasound therapy remains the reasonably broad range of trials from which effective treatment doses can be established. In principle, there is no
More informationMIT Analytical X-Ray Safety Policies and Procedures
5th Edition 2014 MIT Analytical X-Ray Safety Issued by: MIT Radiation Protection Committee Contents 1.0 Program Overview...1 2.0 Purpose...1 3.0 Scope and Application...2 4.0 Radiation Protection Program
More informationMethods to model and predict the ViewRay treatment deliveries to aid patient scheduling and treatment planning
Washington University School of Medicine Digital Commons@Becker Open Access Publications 2016 Methods to model and predict the ViewRay treatment deliveries to aid patient scheduling and treatment planning
More informationTG219: IT'S USE, STRENGTHS AND WEAKNESSES
1 CONFLICT OF INTEREST TG219: IT'S USE, STRENGTHS AND WEAKNESSES SOTIRI STATHAKIS, PHD, DABR None ROSTER STATEMENT OF THE PROBLEM Timothy C. Zhu, University of Pennsylvania, Philadelphia, PA (Co- Chair)
More informationGuideline for RMO Key comparison for Air kerma rate in 60 Co gamma radiation
Guideline for RMO Key comparison for Air kerma rate in 60 Co gamma radiation This intercomparison will be carried out under the lead of KRISS with the cooperation of ARPANSA. This comparison has been approved
More informationHealth & Safety Policy and Procedures Manual SECTION 38 RADIATION SAFETY PROGRAM
SECTION 38 RADIATION SAFETY PROGRAM 1. GENERAL REQUIREMENTS 1. Maul Electric, Inc radiation safety program along with 29CFR 1910.1096 and 10CFR 20.1101 include provisions for project sites to keep radiation
More informationQuality control of breast ultrasound: How to use a breast ultrasound quality assurance phantom?
Quality control of breast ultrasound: How to use a breast ultrasound quality assurance phantom? Poster No.: C-2282 Congress: ECR 2013 Type: Educational Exhibit Authors: S. J. Oh, B. K. Seo, S. E. Song,
More informationBeam modeling and VMAT performance with the Agility 160-leaf multileaf collimator
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 14, NUMBER 2, 2013 Beam modeling and VMAT performance with the Agility 160-leaf multileaf collimator James L. Bedford, a Michael D. R. Thomas and Gregory
More informationFailure Mode and Effect Analysis (FMEA) for a DMLC Tracking System
Failure Mode and Effect Analysis (FMEA) for a DMLC Tracking System Amit Sawant 1, Sonja Dieterich 1, Michelle Svatos 2 and Paul Keall 1 1 Stanford University, Stanford, CA 2 Varian Medical Systems, Palo
More informationTrial calibrations of therapy level electron beam ionisation chambers in terms of absorbed dose to water
Trial calibrations of therapy level electron beam ionisation chambers in terms of absorbed dose to water M R McEwen, A J Williams and A R DuSautoy Centre for Ionising Radiation Metrology National Physical
More informationUSER MANUAL PROGRAM VERSION 1.0.1
R WWW..COM REF 92730-92731 USER MANUAL PROGRAM VERSION 1.0.1 STANDARD IMAGING, INC. 7601 Murphy Drive Middleton, WI 53562-2532 Dec / 2004 2004 Standard Imaging, Inc. DOC #80464-01 TEL 800.261.4446 TEL
More informationTreatment plan complexity metrics for predicting IMRT pretreatment. assurance results. Scott Crowe, QUT
Treatment plan complexity metrics for predicting IMRT pretreatment quality assurance results Scott Crowe, QUT Pre-treatment QA Verification of fluence delivery to ensure that dose can be delivered accurately
More informationDevelopment of Graphical User Interfaces (GUI) software and database for radiation therapy applications
The University of Toledo The University of Toledo Digital Repository Theses and Dissertations 2005 Development of Graphical User Interfaces (GUI) software and database for radiation therapy applications
More informationExercise 2-2. Second-Order Interacting Processes EXERCISE OBJECTIVE DISCUSSION OUTLINE. The actual setup DISCUSSION
Exercise 2-2 Second-Order Interacting Processes EXERCISE OBJECTIVE Familiarize yourself with second-order interacting processes and experiment with the finer points of controller tuning to gain a deeper
More informationSurface buildup dose dependence on photon field delivery technique for IMRT
Surface buildup dose dependence on photon field delivery technique for IMRT Shigeru Yokoyama, Peter L. Roberson, Dale W. Litzenberg, Jean M. Moran, and Benedick A. Fraass Department of Radiation Oncology,
More informationA clinical comparison and analysis between conventional MLC based and solid compensator based IMRT treatment techniques
The University of Toledo The University of Toledo Digital Repository Theses and Dissertations 2009 A clinical comparison and analysis between conventional MLC based and solid compensator based IMRT treatment
More informationALLIED HEALTHCARE PRODUCTS, INC. Litholyme, GE Medisorb, Carbolime, and Amsorb Plus. Test Summary
ALLIED HEALTHCARE PRODUCTS, INC. Comparative CO2 Absorbent Capacity Analysis: GE Multi Style Pre-pack Canisters Litholyme, GE Medisorb, Carbolime, and Amsorb Plus Test Summary The following study by engineers
More informationNOVEL Hz ACCELERATORS FOR PROTON AND CARBON THERAPY: THE CYCLINACS
NOVEL 200-400 Hz ACCELERATORS FOR PROTON AND CARBON THERAPY: THE CYCLINACS Ugo Amaldi University y of Milano Bicocca and TERA Foundation FFAG07 - Cyclinacs - 16.4.07 - U. Amaldi 1 15 years of TERA: 1992-2007
More informationJefferson Lab Bubble Chamber Experiment Update and Future Plans. C(a,g) 16 O. Claudio Ugalde
Jefferson Lab Bubble Chamber Experiment Update and Future Plans 12 C(a,g) 16 O Claudio Ugalde Collaboration Whitney Armstrong Melina Avila Kevin Bailey Tom O Connor Ernst Rehm Seamus Riordan Brad DiGiovine
More informationA-LEVEL PHYSICS A. PHA5B Medical Physics Mark scheme June Version: 1.0 Final
A-LEVEL PHYSICS A PHA5B Medical Physics Mark scheme 450 June 04 Version:.0 Final Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel
More informationThis test shall be carried out on all vehicles equipped with open type traction batteries.
5.4. Determination of hydrogen emissions page 1 RESS-6-15 5.4.1. This test shall be carried out on all vehicles equipped with open type traction batteries. 5.4.2. The test shall be conducted following
More informationVariSource High Dose Rate Afterloader Procedures. For Performing Breast Brachytherapy with. The SAVI TM Applicator
VariSource High Dose Rate Afterloader Procedures For Performing Breast Brachytherapy with The SAVI TM Applicator Contents I. CT Evaluation (~1 week prior to insertion) II. SAVI Applicator Implantation
More information