Fig 1. Images of a 8.1-year-old girl (patient 12) with Sturge-Weber syndrome affecting the left hemisphere. Postgadolinium T1-weighted MR images show an extensive left hemispheric angioma. SWI shows gyriform cortical signal intensity abnormalities in the left posterior region (arrowheads). A separate area of abnormal SWI is also seen in the left frontal region, located at the gray/white matter junction (thick arrows). Severe hypometabolism on PET is confined to the posterior region, matching well with the cortical SWI changes. In addition to cortical MR imaging abnormalities, abnormal transmedullary deep veins in white matter and periventricular veins are seen on both gadolinium-enhanced T1 and SWI images (thin arrows).