MRI MPRAGE Process

MRI MPRAGE Process

data(mrimppro)

Format

A data frame with 3269 rows and 15 variables

Details

A dataset with variables as follows:

  • RID N Participant roster ID

  • SITEID N Site ID

  • VISCODE T Visit code

  • USERDATE S Date record created

  • RECNO N

  • EXAMDATE D Examination Date

  • FLDSTRENG N Field Strength

  • COILTYPE T Coil Type

  • SCAN N Scan

  • LONISID N LONI Study ID

  • LONIUID T LONI Unique Series ID selected for processing. This field identifies which scan the MRI Core has selected to be the preferred scan to be used for processing. 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. The rankings are found in the MRIMPRANK table in the RANK field. 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.

  • COMMENTS T

  • USERDATE2 S Date record last updated

Examples