Hi Adam,
I too used to use the PET_META_LIST (and similar list for MRI) to identify images available through the IDA, but as you indicated, those files are no longer available. I recommend submitting feedback to LONI regarding this issue (there is a feedback button on the opening page of the ARC Builder):

Danielle
--
You received this message because you are subscribed to the Google Groups "Alzheimer's Disease Neuroimaging Initiative (ADNI) Data" group.
To unsubscribe from this group and stop receiving emails from it, send an email to
adni-data+...@googlegroups.com.
To view this discussion visit
https://groups.google.com/d/msgid/adni-data/4fa9df18-ea14-484b-801e-8db8873e5d5dn%40googlegroups.com.
Hi Adam,
The only thing I have done is download the csv from the advanced image search, which has the date and an image ID, but not all of the variables. We use the information for tracking reports we provide to the MRI and PET Cores about what we see available at LONI and what we see in terms of data the processing labs have provided. So, we can’t verify specific images that labs have processed (or not), but at least know if there is an image for that participant on that date, whether or not the lab has generated data from it.
To view this discussion visit https://groups.google.com/d/msgid/adni-data/61ba3611-b7e3-40d3-a7b1-4f24363a5093n%40googlegroups.com.