[Intl_DxMedPhys] GY descriptor on GE Revolution HD CT

[Berkowitz, Lindsey K]

Happy Friday!

Has anyone ever seen 'GY' as a descriptor on a CT ROI, as opposed to seeing HU? One of our GE Revolution HD units will display 10 HU on the axials, but then switch to 10 GY for coronals and sagittals. Example below. In the example one my of radiologists showed me, there was pretty good agreement in the numerical value between HU and GY. I'm inclined to think it's a setting that GE will need to change but nothing is noted in the technical manual, and I'm curious if anyone has seen this descriptor.

Thanks!
Lindsey

[A close-up of a ct scan  Description automatically generated]


Lindsey Berkowitz, PhD (she/her)
Director of Imaging Physics and Radiation Safety Officer
MaineHealth Maine Medical Center - Portland
22 Bramhall Street | Portland, ME 04102
lindsey.berkowitz at mainehealth.org<mailto:lindsey.berkowitz at mainehealth.org>
mainehealth.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.osu.edu/mailman/private/intl_dxmedphys_wd_osu_list/attachments/20250214/d7abc8b1/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 172502 bytes
Desc: image001.png
URL: <https://lists.osu.edu/mailman/private/intl_dxmedphys_wd_osu_list/attachments/20250214/d7abc8b1/attachment.png>