[Intl_DxMedPhys] Body Part in GE CT protocols

[Szczykutowicz, Timothy P]

Is the scanner a Revolution CT (or called Apex something?, their 80 mm or 160 mm scanner?). If yes, once you go into a protocol on the left top side of the left monitor there is a clinical indicator thing that lets you set the scan type (e.g., "general neuro" or whatever). Then additionally within the scan settings for the topmost group of acquisition details there is a similar drop down.

I dont think their (GE) older software has any way to tell what body region you are in. The DMS is likely picking up on the protocol name field perhaps? Are the scans CAPS that the techs split after the scan, so the exam protocol is chest? Then this would be a bug to send the DSM vendor to understand and fix, albeit if they dont have a RIS feed or have the ability to make rules for multiple orderable scans they probably will just blame the CT OEM...

The Rev apex scanners also have this bug where they overwrite all the protocols names in a multi order exam with the first scanned protocols. The behavior the DMS desires is for each series and reformat to reflect the protocol name it was scanned under. Again, a bug on GE's part that a good DMS would be able to understand and fix. But highly non-trivial I think, given it needs to analyze multiple orders at once and re-name/map the individual exams, or do AI to identify the anatomy (not sure if any DMS are using this now for data normalization, maybe just organ dose stuff?).

Lastly, the order will contain body region and this will go to the header, so this may also be present in a AP portion of an exam that the tech pulled form the worklist that started as a Chest and the tech later split into a Chest order and an AP order. You can't fix this within the protocol. I think if the techs do their exam splitting on the scanner, it should be fixed, but if they do it after the scan on PACS, you would see the behavior you are describing.

My 2 cents

Also, alert values should be way higher than what an ap exam delivers... maybe tell the site to change that? Problem solved. ;)

-stick


Timothy P. Szczykutowicz, Ph.D., DABR
Professor
Departments of Radiology, Medical Physics and BME
University of Wisconsin Madison
Cell# 1-716-560-7751<tel:(716)%20560-7751>
Office# 1-608-263-5729
he/him/his



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Subject: [Intl_DxMedPhys] Body Part in GE CT protocols

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Hello, List!

I have a site whose Abdomen/Pelvis scans from their GE VCT are triggering the alert rule for chests in their Radiation Dose Index Monitoring software. The DICOM header has Chest as the Body Part, so the protocol on the scanner must be assigning those exams as Chest. I cannot find the Body Part in the protocols on a GE. I bet someone on this list knows how to change that. Would you mind sharing?

Thanks in advance!
Adam

=========================
Adam C. Springer, MS, DABR®
Medical Physicist & CEO
KLS Physics Group, LLC
PO Box 700
Ruston, LA 71273
318-272-8292
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