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In vivo and ex vivo magnetic resonance imaging data. A listing of scanners and protocols is available here.
In-vivo brain MRI data are collected through the RADC cohort studies and substudies. Participants are imaged biennially using a number of pulse sequences providing structural, functional, and chemical information about the brain. The raw data are processed locally. Raw and processed data are made available for research inside and outside of the RADC. Raw data are made available “as is”, but all processed data have passed our quality checks. We use a 3-step quality control strategy testing: 1) MRI scanner performance on a phantom, 2) quality of raw MRI data collected on humans, and 3) quality of information derived from processing. Each step involves thorough tests tailored to each MRI processing output as well as visual inspection.
Raw data is collected with the following sequences:
(Note: The above are sequences used on the 3T scanners. Similar sequences were run on the older 1.5T scanner. See protocols for exact description of the sequences.)
Processing of the raw MR images generates the following output (click on each type of output for more information on the methods used):
Documentation in progress.