[Intl_DxMedPhys] QC on Dedicated Cardiac PET/CT (IAC, TJC)

[Michael Masiar]

The Rubidium generator I've seen (Bracco), has a built in scintillation
detector that measures the dose as it leaves the generator. The patient
gets hooked up to the generator device and it automatically gives the
prescribed dose. You don't assay the dose in a dose calibrator prior to
injection to the patient.

The system has a daily QC and calibration procedure though... The daily QC
involves putting a dose into a vial and measuring with your dose
calibrator...

So you don't assay the patient doses in a dose calibrator, but you do a QC
procedure every morning that does go in the dose calibrator. I'm not sure
how this could be done without one.

Michael Masiar MS DABR
Certified Medical Physicist
Therapy Physics, Inc.
2501 Cherry Ave., Suite 270
Signal Hill, CA 90755
email: mmasiar at gmail.com
cell: 310-625-9906
office: 562-317-0650



On Thu, Jan 22, 2026 at 5:50 PM William Sensakovic via
Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu> wrote:

> Thinking of 10cfr35. 63 William F. Sensakovic, PhD, MRSC(MRSE), FAAPM
> Chair and Assoc. Prof. , Mayo Clinic (Arizona) Founder, Telerad Physics
> Teaching, LLC From: William Sensakovic <wfsensak@ outlook. com> Sent:
> Thursday, January 22, 2026
> Thinking of 10cfr35.63
>
> William F. Sensakovic, PhD, MRSC(MRSE), FAAPM
> Chair and Assoc. Prof., Mayo Clinic (Arizona)
> Founder, Telerad Physics Teaching, LLC
> ------------------------------
> *From:* William Sensakovic <wfsensak at outlook.com>
> *Sent:* Thursday, January 22, 2026 5:20:21 PM
> *To:* DxMedPhys List <intl_dxmedphys_wd_osu_list at lists.osu.edu>
> *Subject:* Re: [Intl_DxMedPhys] QC on Dedicated Cardiac PET/CT (IAC, TJC)
>
> I did not think that would be allowed. If they are drawing from a
> generator themselves (instead of getting unit doses from the radiopharmacy)
> I thought they are required to assay dose before injection. I thought you
> can avoid dose assay only if you use a unit dose.
> Am I mistaken?
>
> William F. Sensakovic, PhD, MRSC(MRSE), FAAPM
> Chair and Assoc. Prof., Mayo Clinic (Arizona)
> Founder, Telerad Physics Teaching, LLC
> ------------------------------
> *From:* Intl_dxmedphys_wd_osu_list
> <intl_dxmedphys_wd_osu_list-bounces+wfsensak=outlook.com at lists.osu.edu>
> on behalf of Scott Fuller via Intl_dxmedphys_wd_osu_list <
> intl_dxmedphys_wd_osu_list at lists.osu.edu>
> *Sent:* Wednesday, January 21, 2026 1:52:36 PM
> *To:* DxMedPhys List <intl_dxmedphys_wd_osu_list at lists.osu.edu>
> *Subject:* [Intl_DxMedPhys] QC on Dedicated Cardiac PET/CT (IAC, TJC)
>
> I’m working with a facility that intends to install a Rubidium dedicated
> PET/CT system.  They would like to do so without installing any sort of a
> hot lab or dose measuring equipment as there is no intention of using
> anything other than Rb-82 (seems ok from a clinical perspective and all
> vendors involved have supported this).
>
> My question is, does anyone have experience providing QC support for a
> setup such as this?  A dedication Rubidium unit that is not able to order,
> prepare, or store longer lived isotopes such as F-18?  I’m unsure how one
> would go about supporting an image quality assessment and program without,
> at minimum, scanning a filled phantom.
>
> For accreditation purposes, the facility is under the umbrella of IAC and
> Joint Commission.  It looks like IAC provides some flexibility and will
> want the facility to follow manufacturer requirements.  Joint Commission
> provides me with a bit more confusion as to how the facility would meet the
> expectations.
>
> Thanks, in advance, for any prior experiences or insights shared.
>
> Scott
>
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