Alzheimer’s Disease Neuroimaging Initiative

Question

Question Posted 08/04/14:
Hi, can you tell me what units were used in this
image 02_S_4213, F, 78.1, ADNI Brain PET: Raw FDG, Original

Thank you.
Vic

Response posted 08/04/14 by Bob Koeppe:

In this older version of software, the counts of this Gemini TF scanner are not scaled to Bq/cc as are many other PET/CT scanners. There may be scale factors in the header that could be used to scale to absolute radioactivity concentration, though they aren't used in standard ADNI processing. I am not certain.

Are you wanting to calculated SUVs?

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