MRI MPRAGE Ranking data. More information is available at https://adni.loni.usc.edu/data-samples/adni-data/
Usage
data(MRIMPRANK)Details
ORIGPROT character Original study protocol , with options: ADNI1
COLPROT factor Study protocol of data collection , with levels: ADNI1, ADNIGO, ADNI2, ADNI3, ADNI4
ID numeric Range value: 8, ..., 19134
RID numeric Participant roster ID Range value: 2, ..., 1435
PTID character Participant ID
SITEID numeric Site ID Range value: 1, ..., 127
VISCODE character Visit code
USERDATE Date record created Date: YYY-MM-DD
USERDATE2 Date record last updated Date: YYY-MM-DD
RECNO numeric Range value: 1, ..., 34
EXAMDATE Scan Date Date: YYY-MM-DD
FLDSTRENG numeric Field Strength Range value: 1.5, ..., 3
COILTYPE character Coil Type
SCAN character Scan 1=Original Scan ; 2=Rescan Decoded Value: Yes
LONISID numeric LONI Study ID Range value: 1945, ..., 29427
LONIUID character LONI Unique Series ID
RANK numeric MPRAGE Rankings: The MPRAGE rankings are done in a qualitative manner.A scan with a 1 ranking is considered a high quality scan. A 2 ranking is considered a medium quality scan. 3 ranking is a low quality scan.3 is the lowest ranking a scan can receive and still be considered a passing scan. Anything below 3 would be a failure for quality. Choosing MPRAGES: For scans ranked 2 and 3 the scan ranked 2 (whatever is the lower ranking of the two) should always be the "preferred/chosen"MPRAGE. If the rankings are tied in ranking the QC-er would chose the"sharper of the two". If the two scans are identical the first MPRAGE was always chosen. The preferred scan is indicated by the LONIUID field in the MRIMPPRO table. Range value: 1, ..., 5
update_stamp POSIXct: YYY-MM-DD