Dosimetrist/Physicist Training Guide - UCSF Radiation Oncology
Dosimetrist/Physicist Training Guide - UCSF Radiation Oncology
Dosimetrist/Physicist Training Guide - UCSF Radiation Oncology
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MOSAIQ <strong>Dosimetrist</strong>/<strong>Physicist</strong> <strong>Training</strong> <strong>Guide</strong> Module I<br />
Notes Xrays is automatically highlighted, but you can change your selection. If you<br />
change the Modality in Beam Configurations, the Modality field in Treatment Field<br />
Definition also changes.<br />
6. Click 15 in the Energy column.<br />
Specifies the energy level of the beam, then shows the applicable doserates for the<br />
beam in the Doserate column.<br />
7. Click 400 in the Doserate column, then click .<br />
Specifies the treatment modality, energy, and doserate to use to treat with the<br />
field, then closes the Beam Configurations dialog box. The Energy and Doserate<br />
fields show the values you selected in the Beam Configurations dialog box.<br />
8. Type 120 in the MU field.<br />
Specifies the MU field, adds the monitor units for the field. The Energy field shows<br />
the energy you added in the Beam Configurations dialog box.<br />
The Wedge MU field only applies to facilities with Elekta or<br />
GE linear accelerators. If you have a Varian or Siemens<br />
linear accelerator, do not use the Wedge MU field. If you<br />
have an Elekta or GE linear accelerator, speak with your<br />
instructor to make clear its use in MOSAIQ.<br />
9. Type .50 in the Time field.<br />
Specifies the treatment delivery time, in fractions of a minute, such as 0.50 for 30<br />
seconds.<br />
10. Type 90 in the Dose field.<br />
Specifies the dose for the treatment field. The yellow highlighting does not appear<br />
after you add the dose.<br />
11. In the Portal Image Planned group, type 2 in the Planned MU field.<br />
Specifies the planned portal image monitor units value.<br />
12. Type 2 in the Open MU field.<br />
Specifies the open field portal image monitor units. For this exercise, keep the<br />
Dose Coeff fields for open and planned portal images at their defaults.<br />
You have to only add a dose coefficient if your facility<br />
figures portal images as part of the total dose.<br />
13. Type 8 in the Open Delta field.<br />
Specifies the change in jaw settings necessary between the planned and open<br />
portal image exposures, shown in Figure 75.<br />
94 Copyright 2009, IMPAC Medical Systems<br />
LTGRAD0005A/2.0/26-Feb-2009
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