Superficial Siderosis of the Central Nervous System Induced by a Single-Episode of Traumatic Subarachnoid Hemorrhage: A Study Using MRI-Enhanced Gradient Echo T2 Star-Weighted Angiography
Figure 4
CT and ESWAN images of the brain of a 50-year-old man (A, B) and a 59-year-old man (C, D).
The Fisher grades of the SAH based on the CT images were grade 2 (A) and grade 4 (C), respectively. Follow-up MR (1.5T) images were obtained at 34 weeks (B) and 177 weeks (D) after the head injury. The arrows denote areas of SS-CNS, which is indicated by a rim of hypointensity on the surface of the brain. Note the extent of deposition in each case. The CT and ESWAN images display a degree of correlation, patients with a higher Fisher grade exhibit more regions containing SS-CNS deposits.