MOSAIQ User's Guide - UCSF Radiation Oncology

MOSAIQ User’s Guide
3. Type the block required for treatment in the Block field.
4. Type the bolus required for treatment in the Bolus field.
If you are using barcode verification of accessory devices, type the
word ‘Custom’.
Manually Creating Geometric and Couch Settings
Most of the time, you transfer treatment field geometric settings from the treatment planning
system that you use. You can also add the geometric and couch settings manually if
necessary.
1. In the Gantry/Collimator group of the Treatment Field Definition dialog box, type the
gantry angle in the Gantry Angle field.
2. Type the collimator angle in the Collimator Angle field.
3. Type the width and length of the X jaws in the Field Size X field.
4. Type the width and length of the Y jaws in the Field Size Y field.
5. If the X jaws are asymmetrical, click the Asy check box adjacent to the X jaw fields, then
type the width/length of each X jaw in the Jaw X1 and Jaw X2 fields.
6. If the Y jaws are asymmetrical, click the Asy check box adjacent to the Y jaw fields, then
type the width/length of each Y jaw in the Jaw Y1 and Jaw Y2 fields.
7. Type the couch settings in the Couch group, such as the Angle field.
Manually Creating Portal Image Information
You can specify MU and other parameters specifically for portal images.
1. In the Portal Image group of the Treatment Field Definition dialog box, type the planned
portal image monitor units in the Planned MU field.
You must type a MU value less than the maximum portal image MU characterized for
the selected machine. If you type a value greater than the maximum portal image MU, an
error message appears.
2. Type the open field portal image monitor units in the Open MU field.
You can use the Dose Coeff field if your facility adds the dose from
portal images to the total dose.
3. Type the incremental number of centimeters the collimator field size opens from the
treatment field size for an open field portal image exposure in the Delta field.
The EPID and SID check boxes are required fields for the Varian 4D
and Siemens Coherence machines.
94 Copyright 2010, Elekta Impac Software
LUGMSQ0002/4.0/23-Sep-2010