Vatech Green 21 PCT-90LH, User Manual

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4. Installation Procedures
Green21 (Model: PCT-90LH) Installation Manual 51
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5. CT - 4% cut align work
1) Perform 4% cut according to the following criteria.
CT: Threshold – 95
Collimator Min Max
Left (T-80%) 6 pixels 8 pixels
Right (T-80%) 4 pixels 6 pixels
Top (T-80%) 4 pixels 10 pixels
Bottom (T-80%) 4 pixels 10 pixels
2) Run C:\VCaptureSW\Util\CollimatorAlign\CollimatorAlign.exe file.
3) Perform 4% cut align of FOV 21x19 of dental CT (see above criteria.)
4) Set the Dental CT FOV21x19 collimator to its own criteria and click "CALC"
to set the 17x15, 12x9, 8x8 collimator.
Collimator value should be saved after proceeding to Capture
after clicking the Initial button, so Should shoot more than
once for each FOV.
5) When the dental CT is completed, the ENT CT value is copied, calculated,
and set.
Collimator value should be saved after proceeding to Capture
after clicking the Initial button, so Should shoot more than
once for each FOV.
When Spiral Artifacts occurs, conduct the step iii) and lengthen
the collimator interval.
* For designated countries, currently Korea and America, type
the Left and Right collimator position values as 1.0 less than
the current value.