[Intl_DxMedPhys] [EXTERNAL] Re: insulin pumps and CT

[Bob Kobistek]

Also, is there any science? Were these devices tested, like they are for MRI? Are there any published data?


Robert J. Kobistek, MS, FACR, DABR, MRSE(MRSC™)
Medical Physicist
RJK Medical Physics, Inc.
440-463-7879

PLEASE NOTE MY NEW EMAIL ADDRESS Bob at RJKMedPhys.com<mailto:Bob at RJKMedPhys.com>

From: Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces at lists.osu.edu> On Behalf Of Jerry Thomas via Intl_dxmedphys_wd_osu_list
Sent: Monday, March 3, 2025 7:45 PM
To: Philip Doyle <phil_doyle at yahoo.com>
Cc: Szczykutowicz, Timothy P via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu>
Subject: Re: [Intl_DxMedPhys] [EXTERNAL] Re: insulin pumps and CT

This message was sent securely using Zix® Phillip and stick, The guidance is one thing. I want to know what the mechanism of damage to the device is. I don't know the first thing about the construction or operation of an insulin pump,
This message was sent securely using Zix®<https://urldefense.com/v3/__http:/www.zixcorp.com/get-started/__;!!KGKeukY!y7R819i5IeFjCoCLtdcQZYxRe3QYOcAsKatTF9X8uplUrw3_EaaXJ2LgBBy3aLdfLusYrFjRqumzHEJmeYVcTv-50-c1mnOFXbfMUMHRkYero84$>

Phillip and stick,

     The guidance is one thing.  I want to know what the mechanism of damage to the device is.  I don't know the first thing about the construction or operation of an insulin pump, so I'm probably the most ignorant of the group.  The FDA guidance implies that the devices are not at risk of being damaged by Dx x-ray (including CT)  -- e.g. they indicate a low risk of damage.  Do either of you know how these devices work and what component would be damaged by a Dx x-ray?

Jerry




Jerry Thomas, MS, FAAPM, DABR, CHP, DABSNM
Diagnostic Medical Physicist / Radiation Safety Officer
Ascension Via Christi Hospitals Wichita
Wichita, KS  67214

Phone:  316-268-5958  (office)
            240-447-1014  (cell)


On Mon, Mar 3, 2025 at 5:00 PM Philip Doyle via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu<mailto:intl_dxmedphys_wd_osu_list at lists.osu.edu>> wrote:
We aim to follow these useful recomendations (which include situations whereby the device may not be removed): https: //www. fda. gov/radiation-emitting-products/electronic-medical-devices-x-ray-imaging-and-radiation-therapy-what-know-and-how-prevent-damage/preventing-damage-wearable-diabetes-devices-during-imaging-and-radiation-procedures
We aim to follow these useful recomendations (which include situations whereby the device may not be removed):

https://urldefense.com/v3/__https://www.fda.gov/radiation-emitting-products/electronic-medical-devices-x-ray-imaging-and-radiation-therapy-what-know-and-how-prevent-damage/preventing-damage-wearable-diabetes-devices-during-imaging-and-radiation-procedures__;!!KGKeukY!wJY9vmlk5gHpohdDITJ1jytxM5qf36mPc1vH9WsJbbFTHa4KRWhApNUOfffFf4fFLLOK2CWH2ON9ZfAzOip623_JfuDpfOXWl2azoA$ <https://urldefense.com/v3/__https:/www.fda.gov/radiation-emitting-products/electronic-medical-devices-x-ray-imaging-and-radiation-therapy-what-know-and-how-prevent-damage/preventing-damage-wearable-diabetes-devices-during-imaging-and-radiation-procedures__;!!KGKeukY!0O_knvmmBikx0P29q4qZo0nnmOQMCBTPQ7DBzIMsU07OhFHvIMO-csfk6NrOC5SJGuoDBz_cUnY8pb0WVCik4TCBgjjUcDy5ZaTG47VSOg$>

Regards,
Phil.


Anyone have a policy for insulin pumps and sensors other than “taken them off” for CT they are willing to share? huge risk if they malfunction…possible death, so I get why folks defer to the vendor policies which don’t
-------- Original message --------
From: "Szczykutowicz, Timothy P via Intl_dxmedphys_wd_osu_list" <intl_dxmedphys_wd_osu_list at lists.osu.edu<mailto:intl_dxmedphys_wd_osu_list at lists.osu.edu>>
Date: 03/03/2025 21:25 (GMT+00:00)
To: intl_dxmedphys_wd_osu_list at lists.osu.edu<mailto:intl_dxmedphys_wd_osu_list at lists.osu.edu>
Subject: [Intl_DxMedPhys] insulin pumps and CT

Anyone have a policy for insulin pumps and sensors other than “taken them off” for CT they are willing to share?

huge risk if they malfunction…possible death, so I get why folks defer to the vendor policies which don’t appear to be actually tested inside a scanner.


I found this paper, link below. But it basically says listen to the vendors. It seems in practice, this would be complicated if we have to have  a workflow where each device is looked up.
https://urldefense.com/v3/__https://link.springer.com/article/10.1007/s11892-021-01375-7__;!!KGKeukY!wJY9vmlk5gHpohdDITJ1jytxM5qf36mPc1vH9WsJbbFTHa4KRWhApNUOfffFf4fFLLOK2CWH2ON9ZfAzOip623_JfuDpfOXVw0r1dQ$ <https://urldefense.com/v3/__https:/link.springer.com/article/10.1007/s11892-021-01375-7__;!!KGKeukY!2X8iwvcZaThROZKzTShLM48XXAAcboXdv6Nd6eTUed_wyUTOhUxUGhsoBXCoSXWbfJXR7CxWoS34HSLrfILeEy0e1iO_WRko7ct0-yQ3BcMzZ9HaWQ$>

[cid:image001.png at 01DB8CEF.7035AD80]

Timothy P. Szczykutowicz, Ph.D., DABR
Associate 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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