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FIG 2. One of 10 enhancing cranial nerves had a qualitative score of 2.
A, Nonenhanced T1-weighted MR image (400/11/2) in a 74-year-old woman with trigeminal neuralgia, obtained 54 d after treatment with gamma knife radiosurgery. Treatment resulted in a poor response. Treatment dose was 35 Gy to the 50% isodose line. Cranial nerve V (arrow) is well depicted.
B, Contrast-enhanced T1-weighted MR image (400/11/2) shows subtle (grade 2) enhancement of cranial nerve V (arrow).
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