[Intl_DxMedPhys] [EXTERNAL] DECT gout studies

[William Sensakovic]

Hello,
we have two posters coming up at AAPM related to creating a phantom for assessing CT gout identification and how different parameters impact final identification accuracy. We also will have an educational and scientific poster at RSNA about optimization if they get accepted (hint hint to reviewers for the conference that happen to be on the listserv...timely topic! 🙂).
Anyway, for the GE system we found that the main thing is changes to the software parameters (the method was relatively insensitive to acquisition and reconstruction as long as you are using a low noise recon kernel).
Unfortunately, we only have a couple of patients we were able to test this on.
We are currently hoping to find collaborators who would be willing to apply default and our optimized settings and confirm improvement based on longitudinal patient outcome.
If there is interest in collaborating, please let me know!
best,
bill


William F. Sensakovic, PhD, DABR, MRSC

Founder - Telerad Physics Teaching, LLC<https://urldefense.com/v3/__http://www.teleradphysics.com/__;!!KGKeukY!yEMgZD_OyLLdkzQC8lOo0nkLIzJp7FI5xteXyDNvLTJxAbbdSC_btPOvzWS3G0JKgwsGtG-FCJoShH9BWqXuwAtbwXA9rKMUencCpCHK$ >

Chair, Medical Physics - Mayo Clinic (Arizona)

________________________________
From: Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces+wfsensak=outlook.com at lists.osu.edu> on behalf of Hoy, Andrew via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu>
Sent: Thursday, June 11, 2026 7:12 AM
To: intl_dxmedphys_wd_osu_list at lists.osu.edu <intl_dxmedphys_wd_osu_list at lists.osu.edu>; Stephanie M. Leon <Stephanie.M.Leon at hitchcock.org>
Subject: Re: [Intl_DxMedPhys] [EXTERNAL] DECT gout studies

I know Stephanie asked for offline feedback, but I would love to hear from anyone who feels good about their gout protocols/workflow on the GE Apex. It has been a few years now since we tried implementing dual energy gout imaging, but we never
I know Stephanie asked for offline feedback, but I would love to hear from anyone who feels good about their gout protocols/workflow on the GE Apex.
It has been a few years now since we tried implementing dual energy gout imaging, but we never got to a point where our radiologists felt confident in identifying tophi.  We had GE in house to help set things up and had several remote meetings to go over our scans and tweak settings but ultimately abandoned the project.  We could never dial in cutoffs to get both the sensitivity and specificity to make it worthwhile.
At the time (I haven’t looked in a few years not), all the literature on dual energy gout imaging was done on a dual tube system.  My conclusion was that GE’s dual energy solution is technically really cool, but it just doesn’t get the x-ray spectra separation that is needed for reliable material decomposition.  Fast kV switching simply isn’t the same as two tubes with different kVp and filters.
I am certainly not the expert in CT physics and would love to hear what others who are happy with their outcomes are doing.
Thank you,
Andrew


Andrew R. Hoy, PhD, DABR

Radiation Safety Officer

Diagnostic Medical Physicist

Office (605) 312-1429

Cell: (480) 329-5552

Sanford USD Medical Center

Sioux Falls, SD




________________________________
From: Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces at lists.osu.edu> on behalf of Stephanie M. Leon via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu>
Sent: Thursday, June 11, 2026 8:38 AM
To: intl_dxmedphys_wd_osu_list at lists.osu.edu <intl_dxmedphys_wd_osu_list at lists.osu.edu>
Subject: [EXTERNAL] [Intl_DxMedPhys] DECT gout studies

Hello all, If anyone has experience with DECT processing of gout studies on a GE Apex, can you please contact me off-list? I’m trying to figure out settings and workflow. Thanks, Stephanie M. Leon, PhD, DABR, DABSNM Chief of Diagnostic

Hello all,



If anyone has experience with DECT processing of gout studies on a GE Apex, can you please contact me off-list? I’m trying to figure out settings and workflow.



Thanks,





Stephanie M. Leon, PhD, DABR, DABSNM

Chief of Diagnostic Medical Physics

Associate Professor of Radiology


Tel (603) 650-3796
Dartmouth-Health.org

[cid:fda1a98b-fd40-47d9-a8f9-b5d63abdf7be]<https://urldefense.com/v3/__https://www.dartmouth-health.org/__;!!KGKeukY!wNz-gmGiwA-taX3thJXflLiON3BG7mmcB-X_82xqkovfNySRFAGyz8bp6dn1JRY9FH_JES71rUk5DhyOkPegMQ_tSufIKt-IudQXwwxxgEfwtL0fjb_Pnw$>






IMPORTANT NOTICE REGARDING THIS ELECTRONIC MESSAGE:

This message is intended for the use of the person to whom it is addressed and may contain information that is privileged, confidential, and protected from disclosure under applicable law. If you are not the intended recipient, your use of this message for any purpose is strictly prohibited. If you have received this communication in error, please delete the message and notify the sender so that we may correct our records.

-----------------------------------------------------------------------
Confidentiality Notice: This e-mail message, including any attachments,
is for the sole use of the intended recipient(s) and may contain
privileged and confidential information. Any unauthorized review, use,
disclosure or distribution is prohibited. If you are not
the intended recipient, please contact the sender by reply e-mail and destroy
all copies of the original message.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osu.edu/pipermail/intl_dxmedphys_wd_osu_list/attachments/20260611/2125a7f1/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Outlook-k1ecvb13.png
Type: image/png
Size: 39708 bytes
Desc: Outlook-k1ecvb13.png
URL: <http://lists.osu.edu/pipermail/intl_dxmedphys_wd_osu_list/attachments/20260611/2125a7f1/attachment.png>