Pre Installation Instructions for the Kodak Radiation Oncology

Beam Dosimetry Package

This document is intended to ensure that our customers have a complete understanding of the procedures

and amount of time necessary to complete installation, training and acceptance testing of the Dosimetry

Package. Following the instructions in this document should help facilitate an efficient installation process.

*NOTE: This information applies to the Dosimetry Package only. Preinstallation and training instructions

for the 2000RT Radiation Oncology Software (KROS) (Simulation and Portal imaging) are contained in a

separate document.

If you cannot meet any of the requirements listed below for your time, the accelerator time, or other stated

needs, please inform _______________ at_____________as soon as possible. Thank you.

Tasks Up to

TOTAL

FE Time on Site

Installation/Setup/Training/Document Review/Acceptance Testing 7 hours

TOTAL

Physicist Time

Software training/Document Review/Acceptance Procedures 3 hours

TOTAL

Accelerator Time

Acceptance Testing Procedures 2 hours

Installation / Setup Hardware / Software Setup 3 hours

Software Training Training the Physicist

Review of “Important Tips When Using Radiation Oncology Beam

Dosimetry Package V1.0”

½ hour

Document Review Review any questions in regards to the “Kodak Radiation Oncology

Beam Dosimetry Package V1.0 User’s Guide“

½ hour

Requirements Description Reason Yes/No

QA Analysis Software RIT------ V4.2 or higher This version and forward of RIT import

CR images for analysis

SCANDITRONIX WELLHÖFER------

OmniPro IMRT Version 1.5 or higher

This version of OmniPro and higher

import DICOM CR images for analysis

Other QA Analysis Software Please contact FE and give details of

current QA software so connectivity

can be verified

Shared Network

Directory

Create a shared Directory on your network

which can be accessed by both the Kodak

Beam Dosimetry Software and the QA

analysis software

Images from the dosimetry software can

be saved in this file to then be pulled

into your QA software for analysis

Water Equivalent

Material

15-20 cm of 30X30 cm water equivalent slabs 5 cm of water equivalent material is

needed absorb scatter below the CR

plate and 10-15cm above the CR plate

to obtain a uniform exposure for

creation of the calibration profile.

Read and Review

Attached Documents pre-

install

Kodak Radiation Oncology Beam

Dosimetry Package User Guide V1 User

Guide

Please review this document ahead of

time in order to pass on any questions

to the FE during install.

Important Tips When Using Radiation

Oncology Beam Dosimetry Package V1.0”

Reading and understanding this

document will prevent the most

common errors encountered while using

the Beam Dosimetry Package. The FE

will review this document with you at

time of install.

Procedure Acceptance Test Description

Scanner Tolerance

Test Irradiate a 24 X 30 cm Phosphor Plate - with a 100 cGy, 10 X 10 cm square in the center.

Spatial Accuracy Scan the Spatial Accuracy Target, PN-5H6021

Measure the distance between the crosses to obtain 20 cm / within (2mm) horizontally and vertically

Uniform Field Uniformly irradiate a CR plate. Use the same dose that was used to create the calibration profile.

Scan the plate applying the calibration profile you want to test and save the image.

Prior to sending the image to analysis software, note the pixel values in the status bar while moving

the cursor over the CR image. The difference should not to exceed 20 counts.

Create Calibration

Profile

Set the gantry to point downward within 0.5 degrees.

Place 30 x 30 cm solid water slabs on the floor under the isocenter for a thickness of at least 5 cm.

Place the phantom (with the CR plate inside) aligned with the central axis and the arrow pointing

towards the gantry.

Place 9-14cm (14cm optimal) of solid water on top of the phantom.

Irradiate the plate using a 30 x 30 cm field with the appropriate MU to give the plate a cGY amount in

the range of your target test dose. (e.g. The IMRT target dose you will be imaging).

Reproducibility of

SU Readings Irradiate the same CR plate inside the phantom with a range of doses. Recommend ranges are 150,

175, 200, 250 cGy at a depth of 10cm in solid water.

Obtain the range of doses by irradiating individual 6x6 cm squares in the corners (at least 3cm from

each edge) of the plate See Figure 4 (appendix).

Scan the CR plate 10 ± 0.5 minutes after irradiation, apply the calibration profile and save the image.

Open the image with the analysis software. Select a 1x1 cm region of interest near the center of each

uniform dose area. Read and record the mean SU values. The average readings for a given dose

should be within ±15 SU of any single reading.

Repeat this process 30 after the first test, ensuring that the doses are in the same configuration on the

plate to avoid different scatter factors. It is also important that the wait time from irradiation to scan

match the time used for the first test set.

Linearity of SU vs.

Dose Irradiate the same CR plate inside the phantom with a range of doses (a minimum of 8) from 10 cGy

to 250 cGy. Recommend ranges are 10, 50, 100, 125, 150, 175, 200, 250 cGy. Scans from the

Reproducibility Test may be used for this test.

Scan the CR plate 10 ± 0.5 minutes after irradiation, apply the calibration profile and save the image.

Open the image with the analysis software. Select a 1x1 cm or smaller region of interest at the central

axis of each dose region to obtain the mean SU value for that dose.

Plot the SU values on the Y-axis and the log of the dose on the X-axis. Use the XY Scatter chart type

in a spreadsheet program such as Microsoft Excel.