Dosimetrist/Physicist Training Guide - UCSF Radiation Oncology

Lesson 3: Adding Simulation and Treatment Fields
Copyright 2009, IMPAC Medical Systems 123
LTGRAD0005A/2.0/26-Feb-2009
Notes 6. Add a patient note or view simulation images, if necessary.
7. Click to save the site simulation.
Adding a Site Setup
1. In the Diagnoses and Interventions window, click to open the Site
Setup dialog box.
2. Click adjacent to the Patient Orientation field, then click the patient orientation,
such as Head In, Supine.
3. Click the appropriate couch offset thresholds/maximums for the prescription site
from a list of defined thresholds/maximums. The Couch Movement
Threshold/Maximum group is available only if your facility has Elekta Automated
Table Movement (ATM).
4. In the Setup Correction group, click the Prescribed Offsets, then type the offset in
centimeters.
5. In the Structure Set group, click the Structure Set for this site setup.
6. Click .
Copying Simulation Fields and Adding Treatment Field Data
1. In the Diagnoses and Interventions window, click a simulation field, then click
to open the Confirm Field Copy message box.
2. Click .
3. Click if the Machine Characterization warning message box appears.
4. In the Treatment Field Definition dialog box, click the type of beam from the Type
field.
5. Click the treatment modality from the Modality field to open the Beam
Configurations dialog box.
6. Click the energy level of the beam in the Energy column.
7. Click the doserate in the Doserate column, then click to close the Beam
Configurations dialog box.
8. In the Treatment Field Definition dialog box, type the monitor units in the MU
field.
9. Type treatment delivery time in the Time field.
10. Type dose for the treatment field in the Dose field.
11. In the Portal Image Planned group, type planned portal image monitor units in the
Planned MU field.