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FIG 1. Contrast-enhanced CISS MR images (TR/TE = 11.8/5.9) in a 44-year-old woman whose acoustic schwannoma had been resected without recurrence.
A, Coronal view clearly shows bilateral CNs III (long black arrow), IV (black arrowhead), V1 (long white arrow), V2 (white arrowhead), and VI (short black arrow) are clearly demonstrated in the normal cavernous sinuses. Additional dark spot is shown inferior to left CNs V1 and VI (short white arrow).
B, Oblique sagittal view also depicts the left CNs III (long black arrow) and VI (short black arrow) well. Additional dark region shown in A is also identified as a serpiginous, dark line without continuity (short white arrow). It is considered to be fibrous tissue.
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