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Figure 1: Contrast enhanced axial MRI with coronal, sagittal and three dimensional reconstruction showing gamma Knife radiosurgery dose plan for left sided trigeminal neuralgia. A 4mm collimator is used to deliver 80 Gy central dose. The 50% isodose line (yellow) is 2-3 mm away from the surface of brain stem

Figure 1: Contrast enhanced axial MRI with coronal, sagittal and three dimensional reconstruction showing gamma Knife radiosurgery dose plan for left sided trigeminal neuralgia. A 4mm collimator is used to deliver 80 Gy central dose. The 50% isodose line (yellow) is 2-3 mm away from the surface of brain stem