microSTAR®ii User Manual v1.3 59
CHAPTER 9 ADVANCED
OPERATIONS
The following subsections provide information on advanced operations of microSTARii. This
includes information about Linear/Non-Linear ranges, general calibration, creating simulated
calibrations, and calculating and applying Sensitivity Adjustment factors. These procedures should
only be completed by advanced users. The associated permissions must be assigned in order to
complete these operational tasks.
9.1 Changing Read Type (Linear and Non-Linear)
While the site read type (i.e., Linear or Non-Linear) is generally static and configured upon installation,
in more complex operations or after a change in operations, you may find it necessary to change your
read type calibration from Non-Linear to Linear or vice versa.
Linear read ranges are the standard use range. Linear reads apply to most applications.
Non-Linear read ranges are used for high reads to compensate for OSL super-linearity above 300cGy
and PMT saturation above 50Gy. It is common in 6 MV therapy applications. For therapy applications
where the dose is expected to be greater than 300 cGy, a Non-Linear calibration is required.
To change the read calibration type, navigate to the Configuration tab and select/unselect the Non Linear
Calibration check box.
When you change the read range, the Calibration tab will change to reflect the options available for that
type:
Linear Calibration
Will only show calibrations configured for Linear read conditions. (Non-Linear calibrations
will not show up in the listing.)
Will show a single Calibration Factor value (CalibFactor column).
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