Article Figures & Data
Figures
- Fig 1.
Axial lack-blood fast spin-echo images of the internal carotid artery (ICA) and external carotid artery (ECA). Comparison of images reveals no changes in relative signal intensity of the plaque. Hyperintense region is fibrous tissue, and hypointense spots are calcifications.
A, Proton density-weighted image. L = lumen.
B, Corresponding T2-weighted image. Plaque in the ICA is mainly hyperintense, with hypointense spots.
- Fig 2.
Axial lack-blood fast spin-echo images of the ICA (arrow). Plaque in the ICA is hyperintense. L = lumen.
A and B, Proton density-weighted (A) and corresponding T2-weighted (B) images. Large region of the plaque has intermediate signal intensity, with hyperintense edges.
C and D, Another patient. Proton density-weighted (C) and corresponding T2-weighted (D) images. Plaque in the ICA has a large region of intermediate signal intensity, which is relatively decreased in D, while the rest of the plaque remains hyperintense.
- Fig 3.
t-FLAIR images of the brain.
A, Cortical infarct in the territory of the left middle cerebral artery.
B, Centrum semiovale infarct (arrow) in the left hemisphere.
C, White matter lesion (arrow) in the right hemisphere.
Tables
Parameters Black-Blood Fast Spin-Echo Proton Density Weighted T2 Weighted t-FLAIR* TR (msec) 2 heartbeats 2 heartbeats 8000 TE (msec) 14 50 100 Band width (kHz) 20 20 Field of view (mm) 60 60 240 Section thickness (mm) 3 3 5 MATRIX 256 × 256 256 × 256 256 × 192 NEX 2 2 1 Echo train length 12 12 TI (msec) NA NA 2000 Gating Cardiac Cardiac NA Sections 8 8 24 Resolution (μm) 234 × 234 234 × 234 937 × 1250 Imaging time (min) 8 8 2.5 Note.—NA = not applicable.
* Turbo fluid-attenuated inversion recovery.
Lesion Lipid Core (n = 25) No Lipid Core (n = 16) P Value* Basal ganglia infarct No. of patients 2 (8) 0 (0) .51 Median no. of lesions 1.5 (1–2) NA Centrum semiovale infarct No. of patients 14 (56) 4 (25) .06 Median no. of lesions 1 (0–6) 0 (0–4) .04 Cortical infarct No. of patients 6 (24) 3 (19) .99 Any infarct No. of patients 17 (68) 5 (31) .03 White matter lesions No. of patients 21 (84) 13 (81) .99 Median no. of lesions 3 (0–9) 2 (0–12) .16 Note.—Data in parentheses are the percentage or the range. NA = not applicable.
* Group with a lipid core versus and group without a lipid core.
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