Fig. 4

T1-weighted, post-contrast MRI brain images of a: a left thalamic lesion in July 2014 (arrow) treated with fractionated stereotactic radiotherapy (3000 cGy in 5 fractions) and b post-treatment images in August 2015; c small contrast-enhancing lesion in the left cerebellar hemisphere (arrow) in December 2014 which was treated with stereotactic radiation to the left cerebellar lesion in January 2015 and d post-treatment images in August 2015; e a 1.3 × 1.0 × 1.9 cm lesion involving the posterior inferior left thalamus (arrow) extending inferiorly to involve the left midbrain tectum in March 2015 treated with whole brain radiation therapy with 30 Gy over 10 fractions completed on April 2015 and f post-treatment images in August 2015.