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| Joined: | Wed Apr 4th, 2007 |
| Location: | Florida USA |
| Posts: | 8 |
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I am currently using a Siemens Somatom Sensation 64-slice CT scanner to do Cardiac and other Angiographic procedures. I have been in a quandary about how to eliminate what appears to be a Z axis shift during the acquisition for CCTA’s. I have been over the dissertation by Siemens that always leads the error back to technologist error or patient motion. I noticed a "banding" effect on every CCTA done with this machine. This was explained as the contrast attenuation during the acquisition. I noticed on the ctisus.com site the same artifact. When I put the entire VRT in the lateral position as an MIP, I noticed the Z axis shift through the ribs corresponds to the banding effect. Do you have any suggestions how to remedy this or have you seen this on other scanner acquisitions?
Attachment: banding effect.jpg (Downloaded 59 times)
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