PET Core

Updates for Siemens HRRT and Siemens BioGraph HiRez PET scan warnings

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

8 May 2007

Two issues exist with Siemens HRRT PET images.
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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....
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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...
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Data News & Spreadsheets
Data recalls have been consolidated into PET and MRI spreadsheets. The MRI and PET Core also posts updates in the News section.

Contact for MRI Advisories
Contact for PET Advisories

Data Recall
Occasionally, the Quality Control Process identifies data as incorrect. We will make an attempt to contact institutions that have downloaded faulty data, however we may not always be able to notify individual investigators of these problems. Therefore it is advised that investigators using ADNI data subscribe to our email system or visit the Data News and Recalls page. To subscribe, please enter your email address, first and last name in the form above. If you do not receive a confirmation email for your subscription, please check your spam folder or contact us at webmaster@loni.usc.edu. By subscribing to ADNI News, you agree to our privacy policy.
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