[Intl_DxMedPhys] X-ray Meter Calibration Overseas

[Bob Kobistek]

You might want to contact the MQSA hotline and inquire about this. Doing so could motivate the FDA to create an alternative standard. There’s no practical reason why traceability to a European standard agency would not be acceptable.


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

From: Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces+bob=rjkmedphys.com at lists.osu.edu> On Behalf Of Michael Urgo via Intl_dxmedphys_wd_osu_list
Sent: Friday, December 5, 2025 7:24 AM
To: intl_dxmedphys_wd_osu_list at lists.osu.edu
Subject: [Intl_DxMedPhys] X-ray Meter Calibration Overseas

Happy Friday. I was thinking about this in reference to overseas calibration. I checked the MQSA (CFR 21 part 900) regs again, and they are very specific about a NIST traceable calibration lab. See attached screenshots for national standard
Happy Friday.  I was thinking about this in reference to overseas calibration.  I checked the MQSA (CFR 21 part 900) regs again, and they are very specific about a NIST traceable calibration lab.  See attached screenshots for national standard calibration and definition.  Does anyone know if any overseas labs participates with NIST?  Of course the calibration certificate lists their national standard.  Thanks for any info you can provide.   Donna Davis-Urgo
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