Article Figures & Data
Figures
- Fig 1.
Segmentation of the trochlear nerve. The trochlear nerve in the cistern was divided into 2 segments: the perimesencephalic segment and the tentorial segment, by use of the line that links the mesencephalic tegmentum-cerebral peduncle junction to the cerebellar anterior border in the same section. 1. Perimesencephalic segment. 2. Tentorial segment.
- Fig 2.
MR images of each sequence. A, HR-MRC: Perimesencephalic segment of the right trochlear nerve is observed (white arrowhead). Marked CSF flow-related artifacts in the cistern are apparent. The basilar artery (black arrowhead), midbrain (*), and cerebral aqueduct (white arrow) are noted. B, BS-MRC: Bilateral trochlear nerves are apparent in the cistern (arrowheads). The bilateral posterior cerebral artery is observed around the trochlear nerve (gray arrowheads). Band artifacts are also evident (white arrows). C, HR-MSDE: Trochlear nerves are visualized as curvilinear structures in full length (arrowheads). The line for segmentation (*) and the carotid artery (white arrows) are observed.
Tables
Visibility HR-MRC BS-MRC HR-MSDE Excellent 6 13 18 Good 5 2 1 Fair 9 4 1 Not 0 1 0
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