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Steve, I have not heard of this being an issue as well, but I imagine in CA the tech could always perform the State required weekly QC after transport and delivery for peace of mind. For those unaware, a phantom, likely a metal plate, is imaged,</div>
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<div dir="auto"><div><div>Steve, </div><div dir="auto"><br></div><div dir="auto">I have not heard of this being an issue as well, but I imagine in CA the tech could always perform the State required weekly QC after transport and delivery for peace of mind. </div><div dir="auto"><br></div><div dir="auto">For those unaware, a phantom, likely a metal plate, is imaged, and the kV amd mA must be within a certain range, given by a dose ratio calculation against a baseline (i.e. kV^2 * mA). For those who don't want to do a clunky calculation, the units report dose rate. The idea is for the dose rate to be within 25% of a baseline.</div><div dir="auto"><br></div><div dir="auto">Steven</div><div><br></div><div data-smartmail="gmail_signature"><div dir="ltr"><font color="#888888"><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div>Steven M. LaFontaine, M.S., DABR<br>Certified Medical Physicist<br>Therapy Physics, Inc.<br></div><div>2501 Cherry Ave, Suite #270<br></div><div>Signal Hill, CA 90755<br></div><div>562-317-0650 (office)<br>310-720-5899 (cell)<br><a href="mailto:Steven@therapyphysics.com" target="_blank">Steven@therapyphysics.com</a></div></div></div></div></div></font><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sat, Aug 22, 2026, 5:09 PM Gary via Intl_dxmedphys_wd_osu_list <<a href="mailto:intl_dxmedphys_wd_osu_list@lists.osu.edu">intl_dxmedphys_wd_osu_list@lists.osu.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Excellent point. After all, it is portable. <br>
OTOH, all that packing moving and unpacking is bound to jiggle something. Might be smart for the RSO of that outfit to require some basic daily QC before clinical use.<br>
<br>
<br>
---<br>
Thanks,<br>
Gary Isenhower, MS<br>
<br>
<br>
On Sat, 22 Aug 2026 19:22:46 +0000, Bob Kobistek via Intl_dxmedphys_wd_osu_list <<a href="mailto:intl_dxmedphys_wd_osu_list@lists.osu.edu" target="_blank" rel="noreferrer">intl_dxmedphys_wd_osu_list@lists.osu.edu</a>> wrote:<br>
<br>
>One of my clients is a mobile lithotripsy company. They have 9 units<br>
>that go out every day in the Northeast Ohio area. The units are<br>
>brought into the client hospital’s surgery department, not left on the<br>
>truck. At the end of the workday, the units are returned to the<br>
>warehouse and readied for the next day. It would be totally<br>
>impractical for them to have a physicist follow each of those units<br>
>every day. We have to weigh the cost against the benefit.<br>
><br>
><br>
>Robert J. Kobistek, MS, FACR, DABR, MRSE(MRSC™)<br>
>Medical Physicist<br>
>RJK Medical Physics, Inc.<br>
>440-463-7879<br>
><br>
>From: Intl_dxmedphys_wd_osu_list<br>
><intl_dxmedphys_wd_osu_list-bounces+bob=<a href="mailto:rjkmedphys.com@lists.osu.edu" target="_blank" rel="noreferrer">rjkmedphys.com@lists.osu.edu</a>><br>
>On Behalf Of Nicole Ranger via Intl_dxmedphys_wd_osu_list Sent:<br>
>Saturday, August 22, 2026 10:44 AM To: Stephen Steuterman<br>
><<a href="mailto:Steuterman.Stephen@scrippshealth.org" target="_blank" rel="noreferrer">Steuterman.Stephen@scrippshealth.org</a>> Cc: DxMedPhys List<br>
><<a href="mailto:intl_dxmedphys_wd_osu_list@lists.osu.edu" target="_blank" rel="noreferrer">intl_dxmedphys_wd_osu_list@lists.osu.edu</a>> Subject: Re:<br>
>[Intl_DxMedPhys] OEC 3D C-arm Testing<br>
><br>
>My policy at a former facility in WI was that a portable device<br>
>transported within the facility only had annual testing but if that<br>
>device was transported offsite, it needed to be tested before use at<br>
>that new location. A device in a permanently My policy at a former<br>
>facility in WI was that a portable device transported within the<br>
>facility only had annual testing but if that device was transported<br>
>offsite, it needed to be tested before use at that new location. A<br>
>device in a permanently fixed and secured position in a truck and<br>
>operated at a new location, would be different though arguably one<br>
>might want to perform more daily QC testing.<br>
><br>
>Nicole<br>
><br>
><br>
>Sent from my iPhone<br>
><br>
><br>
>On Aug 21, 2026, at 1:23 PM, Steuterman, Stephen via<br>
>Intl_dxmedphys_wd_osu_list<br>
><<a href="mailto:intl_dxmedphys_wd_osu_list@lists.osu.edu" target="_blank" rel="noreferrer">intl_dxmedphys_wd_osu_list@lists.osu.edu</a><mailto:<a href="mailto:intl_dxmedphys_wd_osu_list@lists.osu.edu" target="_blank" rel="noreferrer">intl_dxmedphys_wd_osu_list@lists.osu.edu</a>>><br>
>wrote: Hello all, Portable C-arms are transported to multiple<br>
>locations frequently by lithotripsy companies. Typically, they have<br>
>their annual physicist testing, and I don't believe they do any<br>
>additional testing after each move. Are there different Hello all,<br>
><br>
><br>
>Portable C-arms are transported to multiple locations frequently by<br>
>lithotripsy companies. Typically, they have their annual physicist<br>
>testing, and I don't believe they do any additional testing after each<br>
>move. Are there different requirements for a 3D C-arm? I have a<br>
>friend at an imaging center, who has a tech who wouldn't use a OEC 3D<br>
>C-arm after it was returned from another location. The tech said<br>
>the FSE told her a EPE eval was required after transport and prior to<br>
>patient use. I wasn't able to find that requirement in the user's<br>
>manual, and the FSE didn't give me the reference either.<br>
><br>
>Do you do a full physicist test every time the 3D C-arm is transported?<br>
><br>
>Thanks<br>
><br>
>Steve<br>
><br>
><br>
>Stephen Steuterman, M.S.<br>
><br>
>Director of Medical Physics & Radiation Safety<br>
><br>
>System-Wide Radiation Safety Officer<br>
><br>
><br>
><br>
>619-709-1546 (cell)<br>
><br>
><br>
><br>
><a href="mailto:Steuterman.Stephen@scrippshealth.org" target="_blank" rel="noreferrer">Steuterman.Stephen@scrippshealth.org</a><mailto:<a href="mailto:Steuterman.Stephen@scrippshealth.org" target="_blank" rel="noreferrer">Steuterman.Stephen@scrippshealth.org</a>><br>
><br>
><br>
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</blockquote></div></div></div>