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ADNI Archives

2007
Incorrect Subject
IDA & Informatics Core
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...
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Excel file available with listing of all PET scans considered to have potential issues that may affect results of image analysis.
IDA & Informatics Core
1 November 2007

The Excel File now contains two additional pages with specific information for BioGraph HiRez and HRRT scans that have been reworked. The Excel file contains both Series UID and...
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Masks
IDA & Informatics Core
4 October 2007

Masks created by the MR Core as part of preprocessing are useful for performing N3 correction and are not brain masks. Therefore, the description of these masks has been...
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Preprocessed Image Recalls – 10/3/07
IDA & Informatics Core
3 October 2007

Please discard any preprocessed scaled data from the subjects and scan dates below that were downloaded from LONI before 10/03/2007.
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PET Sites with scanner changes
IDA & Informatics Core
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...
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Data Recall Advisory
IDA & Informatics Core
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...
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ADNI MRI Recall
IDA & Informatics Core
3 October 2007

Occasionally, the MR Core identifies preprocessed data through the Quality Control Process that is incorrect. In such cases, the MR Core, through LONI, will make an attempt to contact...
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Updates for Siemens HRRT and Siemens BioGraph HiRez PET scan warnings
IDA & Informatics Core
1 October 2007

All HRRT PET scans from sites 029 and 128 performed prior to the posted data recall advisory have been reworked. One HRRT PET scan has been reworked from site...
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Siemens HRRT PET scan warnings
IDA & Informatics Core
8 May 2007

Two issues exist with Siemens HRRT PET images.
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Siemens BioGraph HiRez PET scan warning
IDA & Informatics Core
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....
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