This is the latest update for processing sites that addresses which scan to use if the site did two scans for a particular timepoint. Click here to download the Excel Spreadsheet Table
Continue reading...Wednesday, October 1, 2008
Comments Off on Scaled 2 Uploads
As of 10/01/2008 pre-processed files uploaded to LONI from Mayo may be labeled as either *_scaled or *_scaled_2. Scaled_2 files were rescaled by disabling the scaling on the axis or axes for which the phantom scaling may be unreliable. This occurred in two situations. One, replacing the phantom results in unreliable across time scaling in […]
Continue reading...Thursday, June 5, 2008
Comments Off on Preprocessed Image Recalls – 06/05/08
A discrepancy was found in the phantom scaling.
Continue reading...Monday, April 21, 2008
Comments Off on ADNI: MRI Methods
Magnetic resonance imaging (MRI), (18F)-fluorodeoxyglucose positron emission tomography (FDG PET), urine serum, and cerebrospinal fluid (CSF) biomarkers, as well as clinical/psychometric assessments are acquired at multiple time points. All data will be cross-linked and made available to the general scientific community. The purpose of this report is to describe the MRI methods employed in ADNI. […]
Continue reading...Monday, February 4, 2008
Comments Off on Human Amyloid Imaging Conference, April 11, 2008 Chicago
Recent findings in the field of human amyloid imaging will be presented and discussed.
Continue reading...Monday, February 4, 2008
Comments Off on New Biomarker Data Available
New biomarker data is available for download. Authorized ADNI users may obtain this data by clicking the “Access Clinical Data Archive” link from the Clinical Data page. If you are not an authorized ADNI user, you can find out about the application process by clicking here.
Continue reading...Thursday, October 4, 2007
Comments Off on Masks
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 updated to read “Intracranial Space” rather than “Brain.”
Continue reading...Wednesday, October 3, 2007
Comments Off on Preprocessed Image Recalls – 10/3/07
Please discard any preprocessed scaled data from the subjects and scan dates below that were downloaded from LONI before 10/03/2007.
Continue reading...Tuesday, May 8, 2007
Comments Off on Siemens HRRT PET scan warnings
Two issues exist with Siemens HRRT PET images.
Continue reading...Tuesday, May 8, 2007
Comments Off on Siemens BioGraph HiRez PET scan warning
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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If you are 55 to 90 years of age you may be able to participate. Participation is free and no medication is involved.
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Saturday, November 1, 2008
Comments Off on Processing Sites Updates