[Intl_DxMedPhys] mA Display Differences in Siemens Cios Alpha

[steven lafontaine]

Khalid,

One more possibility, some units will change the reported mA at the Control
Screen after the fluoro run has stopped (I'm looking at you, GE OEC
Elite).  In that case, I count the mA on the review screen as the one used
to take the image.  You can easily check for this by watching the Control
Screen during live fluoro, and see if the mA changes after you stop fluoro
- the mA at the review screen would match the live fluoro value.

Steven

On Wed, Jul 9, 2025 at 4:54 AM Wunderle, Kevin via
Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu> wrote:

> Hi Khalid,
>
>
>
> Can you provide any additional information?
>
>
>
> How much of a discrepancy? Is it potentially just a rounding difference or
> is it substantial?
>
>
>
> Does this only happen during fluoroscopy, or do you see it during all
> modes of imaging? Note that in the acquisition mode some units may display
> mA during the acquiring of the image, but mAs on the screen afterward.
>
>
>
> Kind regards,
>
> Kevin
>
>
>
> [image: The Ohio State University]
> *Kevin Wunderle, PhD, FAAPM, FACR*
> Professor, Department of Radiology
>
> Diagnostic Medical Physicist
> 395 W. 12th Avenue,
>
> Floor 4, Room 424
>
> Columbus, OH, 43210
> 216-245-5513 Mobile
> kevin.wunderle at osumc.edu
>
>
>
>
>
> *From:* Intl_dxmedphys_wd_osu_list <
> intl_dxmedphys_wd_osu_list-bounces at lists.osu.edu> *On Behalf Of *Khalid
> Al Hashmi via Intl_dxmedphys_wd_osu_list
> *Sent:* Wednesday, July 9, 2025 4:22 AM
> *To:* DxMedPhys List <intl_dxmedphys_wd_osu_list at lists.osu.edu>
> *Subject:* [Intl_DxMedPhys] mA Display Differences in Siemens Cios Alpha
>
>
>
> Dear All, I hope this message finds you well. I have noticed a discrepancy
> between the mA (tube current) values displayed on the Siemens Cios Alpha
> control panel and those shown on the screen. Since this difference can
> affect output calculations,
>
> Dear All,
>
> I hope this message finds you well.
>
> I have noticed a discrepancy between the *mA (tube current)* values
> displayed on the Siemens Cios Alpha control panel and those shown on the
> screen. Since this difference can affect output calculations, I would
> appreciate any clarification on the reasons behind this variation.
>
> Thank you all for your assistance.
>
> Best regards,
>
> Khalid
>


-- 
Steven M. LaFontaine, M.S., DABR
Certified Medical Physicist
Therapy Physics, Inc.
2501 Cherry Ave, Suite #270
Signal Hill, CA 90755
562-317-0650 (office)
310-720-5899 (cell)
Steven at therapyphysics.com
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