Article Figures & Data
Figures
- Fig 1.
Concomitant axial T2-weighted imaging (TR, 4000 ms; TE, 105 ms) (A) and FLAIR imaging (TR, 6902 ms; TE, 90 ms; TI, 2100 ms) (B) of a healthy 46-year-old woman (case 10) are performed at the striatal level on the 3T scanner; (C) equivalent T2-weighted image (TR, 4400 ms; TE, 95 ms) is acquired at 1.5T.
A, There are bilateral slitlike signal intensity changes (grade 1 on right side and grade 2 on left side), consisting of a lateral hyperintense rim at the lateral border of the putamen (HPR) and a grade 1 hypointense area medial to this rim.
B, FLAIR image demonstrates vague hyperintensities of the putaminal outer margin.
C, The hyperintense rim is absent on T2-weighted image at 1.5T. Note grade 0 putaminal signal intensity hypointensity relative to the globus pallidus.
- Fig 2.
Brain MR imaging of a healthy 46-year-old woman (case 3) uses the same scanning protocol as that of Fig 1.
A, There are grade 2 HPRs on the right and grade 3 on the left and grade 2 dorsolateral putaminal hypointensities.
B, FLAIR image demonstrates grade 1 HPR on left side only.
C, Signal intensity changes of bilateral HPR in A turn to negative findings. The dorsolateral putaminal hypointensities become brighter signals than those in A.
Tables
Basic data and 3T MR findings in 10 subjects with hyperintense putaminal rim
Patient No./Age (y)/Sex T2WI FLAIR Right Left Right Left 1/61/M 1 1 0 0 2/60/F 1 1 0 0 3/46/F 2 3 0 1 4/49/F 2 2 1 1 5/48/F 2 2 1 1 6/55/F 1 2 1 0 7/56/F 1 2 0 0 8/44/M 1 1 0 0 9/54/M 1 1 1 0 10/46/F 1 2 1 1 Note.—T2WI indicates T2-weighted images; FLAIR, fluid-attenuated inversion recovery. Patient number is in order of examination date. With regard to the scale, 0 indicates normal; 1, mild; 2, moderate; and 3, severe abnormalities.
