MRI B1 Calibration data. More information is available at https://adni.loni.usc.edu/data-samples/adni-data/
Usage
data(MRIB1CALIB)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, ..., 8974
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, ..., 17
EXAMDATE Scan Date Date: YYY-MM-DD
FLDSTRENG character Field Strength 1.5=1.5T MRI ; 3=3T MRI Decoded Value: Yes
COILTYPE character Coil Type
SCAN character Scan 1=Original Scan ; 2=Rescan Decoded Value: Yes
LONISID numeric LONI Study ID Range value: 1945, ..., 29427
PRESENT character 0=Present and adequate ; 1=Present NOT adequate ; 2=Not present/not expected ; 3=Missing Decoded Value: Yes
COMMENTS numeric Range value: Inf, ..., -Inf
update_stamp POSIXct: YYY-MM-DD