Male, 16 years old, with sickle cell disease. Assess for stenosis/moyamoya. No evidence of restricted diffusion is seen. No significant parenchymal signal abnormality, edema or mass effect is appreciated. The pattern of enhancement is within normal limits.No evidence of intracranial hemorrhage or any abnormal extra-axial fluid collection is seen. The ventricles are normal in size and morphology.The ICAs are widely patent bilaterally with no evidence of stenosis, occlusion or moya-moya. In fact, no significant vascular stenosis or occlusion is evident in any vascular distribution. Normal variant fenestration of the left A1 segment is seen. There may also be fenestration of the ACOM artery. The right PCOM artery is small. The left PCOM artery is moderately sized. An infundibulum is seen at the origin of the left PCOM artery.
1.No evidence of any significant brain parenchymal abnormality.2.No evidence of ICA stenosis or moya-moya.