Category: Linear Accelerators
Author’s Name: Richard Benson
Published: Apr 17, 2009 11:56 am
An MS EXCEL based daily log for monitoring the output of linear accelerators using a 5 point monitor chamber.
How it is designed to work: At the beginning of each month the outputs for each beam is measured three times in a row and this forms the basis for comparison for all the daily measurements that are performed the remainder of the month. The data for these reference measurements are entered on the last worksheet, labeled “Limits”. Measured data is entered in cells colored green and the default color is blue for cells yet to be measured. This worksheet automatically calculates the mean measured values as well as the upper and lower limits (+/- 3% of mean) and displays those values in white cells immediately below the measured data. All white cells are “protected” (without password) from modification and can be unprotected using the command Tools>Protection>Unprotect Sheet… It is recommended to leave protected cells in protected mode. Data in blue cells is simply a copy of the data from the month immediately preceeding. This is to allow the worksheet to provide reference information for a period before the current month’s reference data has been entered. At the beginning of a new month the data in the blue cells can be deleted, the cell color should be changed to green and the new data entered into them. After this is complete the data is used in the weekly worksheets to look up the reference information using the month as an index.
Category: Linear Accelerators
Author’s Name: Kenneth Chu and Brian Rasmussen,
Published: Jul 31, 2010
Off axis ratio from Beam Profiles can be matched by fine adjustments of PDD. Data from 10 different Varian LINACs were compared. Output factors and Wedge factors were within 1% if measured the same way. Data was also compared to Varian’s Golden Beam Data.
AAPM 2009 poster presentation. Summary: Varian’s Golden Beam Data is actually quite good, contrary to comments by many physicists. Data from 10 different Varian’s high energy series linacs installed over 10 years were compared. Differences in LINAC profiles is correlated to minor PDD differences. Output factors and Wedge factors were within 1% if measured the same way. Many physicists do not CLEARLY document their method of measurement. The author has seen differences of up to 5% in wedge factors when measured under different set up conditions.
Category: Linear Accelerators
Author’s Name: M Bakhtiari
Homepage: mbakhtiari.info
Published: Aug 10, 2012
EGS_WINDOWS is a matlab version of the EGS_WINDOW code (that was developed and distributed for Linux systems).
USAGE: EGS_WINDOWS(‘*.egsgeom’,’*.egsgph’)
EXAMPLE: For one of the BEAMnrc examples EX10MeVe:
EGS_WINDOWS(‘EX10MeVe.egsgeom’,’EX10MeVe.e
Category: Linear Accelerators
Author’s Name: Submitted by Nathan Childress, index.php
Published: Oct 19, 2007
This is a shielding report for a new high energy (6/23 MV) installation, with calculations based on NCRP 151.
Category: Linear Accelerators
Author’s Name: Andrew McGrath
Published: Oct 15, 2018
Calculates optimal imager panel positions for a Varian linear accelerator, based on field size, collimator rotation and vertical imager position.
The spreadsheet can calculate optimal imager panel positions for a Varian linear accelerator, based on field size, collimator rotation and vertical imager position.
The spreadsheet will alert the user when the projected radiation field is larger than the extent of the imager. A graphical display of the imager panel with the projected radiation field size is shown.
Category: Linear Accelerators
Author’s Name: Vivek Jeevan
Published: Sep 20, 2010
Pinnacle (ver 8.0m) scripts for expediting IMRT QA
Creating a phantom plan for IMRT QA in Pinnacle requires many repetetive steps. Here is a script that automates as much as possible, making the process much quicker. We do beam-by-beam analysis, and there is an additional script that expedites the export of planar doses.
Category: Linear Accelerators
Author’s Name: Catherine Jones
Published: Fri Jul 26, 2013 11:08 am
Contains function write_rectangular_efs() will generates an iCom file for an arbitrary rectangular field. Function call_write_efs() illustrates its usage. Scripts are for Agility model only, but could be modified for other machines.
Category: Linear Accelerators
Author’s Name: Dayan Loria,
Homepage: www.scientificblogging.com/medical_physics_notes
Published: Feb 25, 2008
Just a sample spreadsheet to compute or verify your TPS MU computation for 6 MV and 15 MV photons.
Category: Linear Accelerators
Author’s Name: Jigar Soni
Published: Jul 23, 2012
A macro enabled excel spreadsheet to check for patient gantry collision when planning SBRTs or RapidArcs. Gantry and couch data was measured on a Varian Trilogy.
Compatability checked with excel 2007 and 2010. The collision detection was designed to be conservative.
Category: Linear Accelerators
Author’s Name: Richard Benson
Published: May 25, 2010
Used for calculating the dates for weekly physics checks.
Used for calculating the dates that weekly physics checks will fall upon assuming that they are perfomed in the middle of every 5 fractions of treatment. Also includes a running dose delivered value. A second worksheet does the same except for final EOT checks. Write protection make it possible to use the key to easily move between input fields which include: START DATE, END DATE, TOTAL DOSE (i.e. Rx), MISSED DAYS. Holidays and missed treatments are automatically taken into account. Note that this does not work for BID treatments.
Worksheet protection password = 1111
Category: Linear Accelerators
Author’s Name: Clay Holdsworth
Published: Oct 08, 2010
This Pinnacle Script is to be used with NameBeam.Script (Pinnacle_Script_for_Naming_Beams), and will change the name of all the radiation beams in one trial to reflect the angle of incidence relative to the patient.
The .txt extension can be changed to .Script.
Category: Linear Accelerators
Author’s Name: Clay Holdsworth
Published: Oct 08, 2010
This Pinnacle Script will rename a radiation beam based on the angle of incidence relative to the patient. The .txt extension on the file can be changed to .Script.
Category: Linear Accelerators
Author’s Name: Jimmy Jones
Published: Feb 14, 2012
This is a Word document and XLS file designed to assist clinical physicists with implementing AAPM TG-142 recommendations for linear accelerator QA. It provides examples of tests that can be performed to fulfill TG-142’s recommendations.
The manual focuses on tests that can be measured with Electronic Portal Imaging Devices EPID or film measurements. In using this manual, you may wish to reference the three tables in the Microsoft Excel file included with download of the document. The tables are combinations of the six tables in the original AAPM TG-142 report, organized into Daily, Monthly, and Annual recommended tests. The tables also indicate whether a given test can be performed using DoseLab Pro, and indicate the section of this document where the test procedure is described.
Category: Linear Accelerators
Author’s Name: Nathan Childress,
Homepage: www.marcova.com
Published: Jun 12, 2006
Annual QA report for a Varian Linac – This is a simple Excel spreadsheet with TG-51, output factors, depth dose, mechanical isocenter, etc. measurements.
Category: Linear Accelerators
Author’s Name: Nathan Childress
Homepage: www.marcova.com
Published: Jul 09, 2010 | Updated: Apr 13, 2011
Brief document describing the clinical implementation of a modified Winston-Lutz test. This test measures IGRT system end-to-end positioning accuracy with a precision of ~0.1 mm. It can be performed in less than 5 minutes.
Thanks to Jimmy Jones, MS, and Stephen Kry, PhD, for assisting with the procedure and documentation.
Category: Linear Accelerators
Author’s Name: Nathan Childress,
Homepage: www.macorva.com
Published: Aug 14, 2008
Radiation warning signs in editable Microsoft Word documents.
Category: Linear Accelerators
Author’s Name: Ado van Rensburg,
Published: Nov 07, 2006
Radiotherapy equipment specifications, including evaluation criteria.
This file contains the specifications for typical radiotherapy equipment, not only technical specifications but also functional and cost of ownership. It also sets out a way of evaluating the different offers.
Category: Linear Accelerators
Author’s Name: Paul Booker,
Published: Oct 02, 2015
A sample of a few iComCAT files used as part of VMAT commissioning for an Elekta VersaHD following NCS report 24.
Files have been saved as text files as medphysfiles did not allow .efs type. PLEASE RENAME FILES MANUALLY BEFORE USE!
See NCS report 24 for background information: http://radiationdosimetry.org/files/documents/0000087/245-ncsreport24vmatqa.pdf
Category: Linear Accelerators
Author’s Name: Richard Benson
Published: May 25, 2010 6:31 pm
This EXCEL spreadsheet copies all tables in Klein et al’s TG-142 paper of September 2009.
Category: Linear Accelerator
Authored by: Bhurko
Published: May 26, 2010
TG 51 Calibration Worksheet
Category: Linear Accelerators
Authors Name: Nathan Childress
Homepage: www.Macorva.com
Published: Apr 13, 2011 | Updated: Aug 10, 2011
Program to automatically anonymize Varian DynaLog files.
To use, select the “source directory” that contains Dynalog files. The program will automatically find all Dynalog files in all subdirectories.
Choose the “destination directory” where you would like to save the anonymized files. Click the Anonymize button and all files will automatically be cleaned and added to a ZIP file in the desitnation directory.
Thanks to Eli Stevens and Geordan Rosario for very quickly creating this simple and useful tool.
Category: Linear Accelerators
Author’s Name: Chuck Smith
Published: Jan 06, 2007
This is a spreadsheet compilation of data sent to me. The data is presented as I recieved it, except for some formatting fixes for printing. I claim no credit for clever work nor accept responsibility for accuracy. We should all be grateful for the kindes
The first worksheet is a table of calculated EDWF. The second worksheet is a cluster of data from numerous sources. Sheets 3 and 4 are from one individual and contain a wealth of data. Sheet 5 is a calculator for on axis EDWF.
Category: Linear Accelerators
Author’s Name: zulloj
Submitted: May 25, 2010
List of Varian recommended QA checks for high energy linacs to perform after replacement of various common parts.
Category: Linear Accelerators
Author’s Name: zulloj
Published: May 25, 2010
Table of Varian recommended checks to perform after replacement of linac components.
Category: Linear Accelerators
Author’s Name: Nathan Childress,
Homepage: www.macorva.com
Published: Jun 12, 2006
Varian MLC square fields and closed fields for 52 and 120 leaf MLCs, useful for commissioning and light/radiation field measurements.
Category: Linear Accelerators
Author’s Name: Nathan Childress,
Homepage: www.macorva.com
Published: Jun 12, 2006 | Updated: Jun 15, 2006
Simple Excel sheet for monthly calibration, PDD, and linearity tests for SSD calibrations. Ppol is not included.
Category: Linear Accelerators
Author’s Name: Li Cheng Kuo
Published: Sep 08, 2006 | Updated: Sep 13, 2006
TG 51 Calculator – The program support all kinds of Dose calibration Methods provided by TG 51. The procedures are setp by step and are based on the worksheet A~D of TG 51.