Figure 1

Contrast-enhanced T1-weighted MR images from 5 patients treated with 2-session SRS. The upper and lower images were obtained at the time of the initial SRS and the latest follow-up, respectively. A 71-year-old man with a tumor 19.2 mL in volume (upper), 3 months post-treatment (lower): (A). A 60-year-old man with a tumor 14.3 mL in volume (upper), 11 months post-treatment (lower): (B). A 64-year-old man with a tumor 15.2 mL in volume (upper), 8 months post-treatment (lower): (C). A 61-year-old man with a tumor 17.0 mL in volume (upper), 14 months post-treatment (lower): (D). An 80-year-old woman with a tumor 22.3 mL in volume (upper), 9 months post-treatment (lower): (E).