Dosimetrist/Physicist Training Guide - UCSF Radiation Oncology

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MOSAIQ Dosimetrist/Physicist Training Guide Module I Notes Adding Geometric Settings Geometric settings include gantry angle, collimator angle, field size, and couch settings. In this exercise, you will add geometric settings. 1. In the Simulation Field dialog box, type 12 in the Field X geometric field. Specifies the size of the X jaws for the simulation. 2. Type 15 the Field Y geometric field. Specifies the dimensions of the Y jaws for the simulation. Fields are automatically symmetrical unless you click the X Jaws Asy and/or the Y Jaws Asy checkboxes. You can then add individual measurements for each jaw. 3. Type 111.2 in the Couch Vrt geometric field. Specifies the couch vertical setting. 4. Type 97.1 in the Couch Lat geometric field. Specifies the couch lateral setting. 5. Type 125 in the Couch Lng geometric field. Specifies the couch longitudinal setting. Keep the Couch Ang and Couch Ped fields at their defaults. Replace the parameters above with the correct parameters for your simulator if necessary, shown in Figure 60. Figure 60: Completed Simulation Field Dialog Box 82 Copyright 2009, IMPAC Medical Systems LTGRAD0005A/2.0/26-Feb-2009
Lesson 3: Adding Simulation and Treatment Fields Copyright 2009, IMPAC Medical Systems 83 LTGRAD0005A/2.0/26-Feb-2009 Notes Adding Radiography Settings Radiography settings let you add radiographic settings for a simulation film. You can add the kVp and mA values, the number of seconds to expose the field, and the blade positions during exposure. In this exercise, you will add radiography settings. 1. In the Simulation Field dialog box, click . Opens the Radiography tab of the Simulation Field dialog box, shown in Figure 61. Figure 61: Simulation Field Dialog Box – Radiography Tab 2. Type 50 in the kVp field of the Exposure group. Specifies the kVp value. 3. Type 200 in the mA field. Specifies the mA value. 4. Type .25 in the Secs field. Specifies the duration of the exposure in fractions of a second.
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Dosimetrist/Physicist Training Guide - UCSF Radiation Oncology

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