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GE ProSpeed SX Power image artefacts

Tags: CT, GE

(33)
(4)
(8)

Alexander Tonev

GE ProSpeed SX Power image artefacts

February 17, 2014 11:42

Dear colleagues,

We have an issue with ProSpeed Sx Power with SS type DAS.Image artifacts appear in the form of multiple rings and center smudge, but each subsequent scan artifacts are different. The image deteriorates when speed of rotation is increased or by reducing the slice thickness. Checked already power supply, slip ring, brushes, ISO Center Alignment, Plane of rotation, Bow-tie filter and others.

Your advice to solve this issue will be appreciated.

Best regards

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(3)

William Blackford

re: GE ProSpeed SX Power image artefacts

February 17, 2014 06:07

I HAD THIS PROBLEM. TAKE THE COLLIMATOR BLADES OFF AND GET TO THE BACK SIDE YOU WILL FIND LEAD OXIDE. JUST TAKE A
Q TIP AND WD40 AND CLEAN IT THEN PUT IT BACK TOGETHER AND RE CLIBRAIT THE SYSTEM

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William Blackford

re: GE ProSpeed SX Power image artefacts

February 20, 2014 05:36

Did you try my sugestions?
Bill Blackford 209 969 0407

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Alexander Tonev

re: re: GE ProSpeed SX Power image artefacts

February 21, 2014 08:17

Thank you for your advice. We try your suggestion, but there is no change in the image quality. If you provide an e-mail will send you images and tests that was made.

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William Blackford

re: re: re: GE ProSpeed SX Power image artefacts

February 21, 2014 11:33

Bill.blackford@comcast.net
Another possibility is that the collimator blades are moving during a scan. Did you actually see the back side of the collimator blades. If you get a new collimator you must check it for lead oxide it looks like littles crystals. I have had this problem on 3 prospeeds.

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Mark Parris

re: re: re: re: GE ProSpeed SX Power image artefacts

February 21, 2014 01:51

Just curious if the bow tie filter is the old style that is prone to cracking. You can shine light through it and see if it has little deterioration. This type of artifact will have rings and center spot

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Mark Parris

re: re: re: re: GE ProSpeed SX Power image artefacts

February 21, 2014 01:52

Also if you look at the tube port and it has spots this is the same collimator debris and when it hit the copper it soldered to it. Clean carefully try not to scratch copper

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nilo panlilio,jr

re: re: re: re: re: GE ProSpeed SX Power image artefacts

February 27, 2014 01:12

check bowtie filter if crack,if not try to perform all the calibrations.

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