6-8
17-19 Operators’ Manual
990400 Rev C 2010 May 1
Protocol Guidelines
NOTE: Refer to the Acquisitioning chapter for information specific
to PAN scan positioning and acquisition.
In general, protocols should be selected based on the field of view
(FOV) required for the study while minimizing radiation dose to the
patient. Use the following guidelines to help determine which
protocol to use for a study:
• The smaller the diameter and height of the scan, and the
larger the voxel size (0.4, 0.3), the less dose to the Patient.
• A smaller voxel size (0.25, 0.2, 0.125) results in a longer
scan time and larger dose to the Patient, but produces better
resolution and detail.
• A smaller voxel size creates a larger data set so the
reconstruction time is longer. Also, these protocols are more
sensitive to Patient movement, so it is critical to restrict
Patient movement during the scan.
• It is recommended to use either 0.4 or 0.3 voxel resolution
when importing VisionQ data into 3rd party software.
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