[Intl_DxMedPhys] ACR PET Count Rate Performance Test

[Shane McCotter]

Thank you to all who replied and helped me with the PET Count Rate Performance Test.

To follow up from my previous inquiry - I needed to use a 5.64 kg patient with the boost dose rather than using the same 70 kg patient from the initial phantom patient.  After correcting for assay time and residual, I am getting within 10% of original.

A few of you reached out regarding what I found, if anyone wants my spreadsheet for calculating the count rate performance (and other PET tests), let me know!

Thanks!
Shane







________________________________
From: Shane McCotter
Sent: Tuesday, June 23, 2026 3:32 PM
To: DxMedPhys List <intl_dxmedphys_wd_osu_list at lists.osu.edu>
Subject: ACR PET Count Rate Performance Test

All,

Wondering if someone could walk me through the PET Count Rate Performance test as outlined in the ACR PET QC Manual.  I have had trouble getting it to pass on a Siemens unit and am wondering if it is my scanner settings (dose, injection time, etc.).

Feel free to email privately if that is more desired.

Thanks,
Shane
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