New Warnings from PET Core 4 October 2010 All site 128 PIB scans have been re-reconstructed over the past several months. The new reconstruction code has a new scatter correction algorithm implemented, resulting in from some less... Read More>
Recalled ADNI PET scans replaced with new re-worked images 4 January 2008 The original raw and processed PET images for the BV visit FDG scan for subjects 128_S_1407 and 128_S_1408 contained reconstruction artifacts resulting from a problematic attenuation correction. When the... Read More>
Incorrect Subject 1 November 2007 The baseline PET FDG scan for ADNI subject 109_S_1343 has been determined to be the wrong subject. At the time of the 6m PET scan on 109_S_1343, the PET... Read More>
PET Sites with scanner changes 3 October 2007 Three sites have replaced their PET scanner during the ADNI project. Investigators should be aware of resolution differences between scanners, and should consider analyzing the PET data that has... Read More>
Data Recall Advisory 3 October 2007 From time to time, our PET Quality Control process identifies data as faulty that have already been posted and downloaded by users. We are not able to notify individual... Read More>
Siemens BioGraph HiRez PET scan warning 8 May 2007 There exists a software bug in OSEM reconstruction for Siemens BioGraph HiRez PET/CT scanners. Depending upon the circumstances, this artifact can be quite minor or can be quite substantial.... Read More>
New Site with PET scanner change 2 April 2007 A fourth ADNI site has just replaced their PET scanner (the other 3 sites are listed under "Old Warnings"). As mentioned below, investigators should be aware of resolution differences... Read More>
