Have a Sytec Synergy CT with a ring artifact. This ring appears about 30 minutes after scanning.
This appears to be a thermal problem. Sometimes warmup fails the highpass ratio test listing channel 431. All other DAS Diagnostics pass.
Also, the DAS heater seems to be working properly.
Any help appreciated!
If it is channel 431 causing the trouble, your ring radius will be 15.67cm. 431 is on CN5 of the 3rd CAM board. You can always swap CAM 2 & 3 to see if the ring moves. If not, it is in the detector.
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Herman Rice
GE Sytec Synergy CT Detector Artifact Problem
March 05, 2007 09:21
Have a Sytec Synergy CT with a ring artifact. This ring appears about 30 minutes after scanning.
This appears to be a thermal problem. Sometimes warmup fails the highpass ratio test listing channel 431. All other DAS Diagnostics pass.
Also, the DAS heater seems to be working properly.
Any help appreciated!
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Elliot Marcus
Re: GE Sytec Synergy CT Detector Artifact Problem
March 05, 2007 10:42
What is the diameter of the ring? Is it black,white, faint? Have you replaced the board relating to the failing warmup channel 431?
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Ralph Childs
Re: GE Sytec Synergy CT Detector Artifact Problem
March 06, 2007 03:42
Herman,
If it is channel 431 causing the trouble, your ring radius will be 15.67cm. 431 is on CN5 of the 3rd CAM board. You can always swap CAM 2 & 3 to see if the ring moves. If not, it is in the detector.
Scooter
scanner1@eim.ae
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Herman Rice
Re: GE Sytec Synergy CT Detector Artifact Problem
March 06, 2007 04:07
Thanks, I'll try swapping CAM 2 & 3
Herman
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Elliot Marcus
Re: GE Sytec Synergy CT Detector Artifact Problem
March 07, 2007 09:52
Herman.
Don't forget to recal once you've swapped the boards.
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Carlos Duran
Re: GE Sytec Synergy CT Detector Artifact Problem
March 05, 2007 11:21
is always the same channel? how is the image displayed?
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