Article Figures & Data
Figures
- Fig 1.
Example of segmentation of gray and white matter and definition of subvolumes 1 to 8 for section 5 (A). The segmentation map (A) was overlaid on corresponding CBV and CBF parametric maps of patients with PFS and control subjects (image B is a CBF map of a patient with PFS, and image C is that of a matched control subject).
- Fig 2.
Axial T2-weighted (A), FLAIR (B), diffusion-weighted (C), and ADC map (D) images demonstrating surgical damage to the upper portion of the left superior cerebellar peduncle (open arrow) and the mesencephalic tegmentum (solid arrow). Diffusion-weighted and ADC map images show restricted water diffusion, consistent with cytotoxic edema. This finding was interpreted as permanent damage to the left superior cerebellar peduncle.
- Fig 3.
Coronal T2-weighted (A,B,D) and FLAIR (C) images demonstrating no damage (A), unilateral damage (B,C), and bilateral damage (D) to the superior cerebellar peduncles in 4 different patients. On image B, it is uncertain whether the signal intensity and structural changes (arrow) represent complete damage or correspond to postsurgical edema only (patient did not have PFS). On image C, damage to the right superior cerebellar peduncle (and dentate nucleus) is unequivocal, whereas hypersignal on the left side (arrow) may be interpreted as postsurgical edema (patient had PFS; damaged left dentate nucleus not shown).
- Fig 4.
Coronal T2-weighted images in 2 different patients, illustrating unilateral (A) and bilateral (B) damage to the dentate nuclei (arrows).
- Fig 5.
Axial (A) and coronal (B) T2-weighted images showing obvious damage to the left superior cerebellar peduncle (solid arrow) and normal right superior cerebellar peduncle (open arrow). The dentate nuclei were more challenging to assess. Damage to the left side (solid arrow) was considered definite, whereas damage on the right side (open arrow) was considered partial. This was a patient who was believed to have only unilateral damage to the proximal ECP on the basis of anatomic damage analysis, but still went on to have PFS clinically, suggesting that the actual lesion involvement of the dentate nuclei was bilateral.
Tables
Regional values of statistical significance (P < .05)
Measure Control Subjects Cases P Value Mean SD Mean SD Cerebral blood flow (mL/min/100 g) Left frontal polar region, section 5 76.2 29.9 53.3 17.0 .019 Right frontal polar region, section 7 68.5 27.5 46.0 18.0 .041 Right frontal region, section 3 91.1 40.7 57.8 19.6 .037 Right frontal region, section 5 107.9 33.6 76.4 26.0 .023 Right frontal region, section 7 125.9 37.9 83.6 28.6 .025 Left frontal region, section 7 129.3 41.9 86.7 29.9 .023 Right temporal parietal region, section 3 112.9 37.6 84.7 41.4 .023
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