Figure 1. Comparison of magnetic resonance imaging and single-photon emission computed tomography/computed tomography (SPECT/CT) findings of the brain at admission and 5 years later. (A, D) T2-weighted image, axial view. In this sequence, hemorrhages and hemosiderin deposits are hypointense. (A) Severe global brain atrophy can be seen at admission. (D) The atrophy has progressed significantly 5 years later. (B, E) Magnetic resonance angiography (MRA), axial view. MRA is used to detect narrowing of the arteries and to rule out aneurysms. No stenosis was seen in the brain vessels at either admission or 5 years later. (C, F) SPECT/CT, sagittal view. A SPECT/CT scan was used to visualize how blood flows through the arteries and veins in the brain. Red color indicates areas of rich blood flow, and blue color indicates areas of low blood flow. (C) The findings at admission show a reduction in the blood flow throughout the whole brain and especially in the bilateral frontal, temporal, and parietal lobes. (F) Five years later, the cerebral blood flow in the cranial occipital lobe was further reduced, compared with that upon initial presentation.