Thursday, January 12, 2006

i-CAT Users Group

iCAT Calibration.

Sorry gang. I published the last without any text.

We are now recommending to calibrate your iCAT machines (click View/Calibrate - make sure nothing is in the field of view of the x-ray) twice a day instead of only once. The reason for this is that there are temperature fluctuations throughout the day and the extra calibration will help account for this and improve the quality of the scan. We also recommend that if you are doing high res. scans (0.2 voxels) that you calibrate just before that scan. Also, keep in mind to that calibrating is not meaningful if you do it at 8 am but don't take a scan until noon. In this case, wait until just before your first patient that day to calibrate. Let us know if any questions.


Blogger Don Croall said...

What are the current recommendations for how long the machine should be on before doing the first scan?

2:52 PM  
Blogger Liz Qualtier said...


We still recommend 2 hours for the machine to warm up. Again, this has to do with the sensor.

3:23 PM  
Blogger Amnon said...

We are doing a lot of 0.2 voxel.
Our protocol is: Calibrate right
before the first patient,
same thing again afternoon.
in between if circular artifacts appear calibrate again before the next patient.
In case the machine wasn't on
1.5 - 2 hours, calibrate before each scan till reaching this time delay.
Have a nice iCAT'ing

2:45 AM  

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