Image Owl supports all CBCT tests suggested by Varian provided in their Installation Product Appectance guidelines, outlined below. Catphan® 504 and Catphan® 604 versions are automatically identified and analyzed.

Scanning ModesCBCT Scans

The following scan modes are used to demonstrate basic CBCT operation, functionality, and conformance.

• Standard Dose Head (full fan)
• Pelvis (half fan)

Phantom Setup

Position the phantom on the front edge of the couchtop, using the storage box as the holder.

Align the phantom as follows:

• VRT Axis: Wall lasers intersecting the side reflective dots on phantom
• LAT Axis: Overhead or Sagittal laser intersecting the top reflective dots on phantom
• LNG Axis: Middle of the Low Contrast module CTP515 aligned to wall vertical laser

Before continuing, rotate the gantry 360º around the Catphan® phantom to make sure there are no collision possibilities.

Scanning Test Method

1. With the Clinac in CLINICAL mode, launch Treatment on the 4DITC and verify the PRO values (from the LVI) are displayed in the Treatment application. 
2. Open the test patient CATPHAN plan from the Treatment Queue, and mode up the CBCT setup field. Use DICOM RT mode and perform a Machine Override if the patient is not imported into the OIS and/or not available in the Treatment Queue.
3. Close the OBI application and launch the CBCT application.
4. Open a New Patient and enter a New Patient ID, using the ID names shown in the setup table for the applicable scan mode.
5. Select Acquire new scan and follow the on-screen instructions to acquire the desired scan mode.

Verification Tests

The full set of DICOM files from each scan mode can now be uploaded to Catphan® QA for analysis.