Female, 15 years old, history of hemoglobin sickle cell disease, new stroke on CT, evaluate for pathology. Diffusion weighted images are unremarkable. No evidence of parenchymal edema or mass effect is detected. No acute intracranial hemorrhage or abnormal extra-axial fluid is detected. Brain morphology and volume are within normal limits. Ventricles are normal in size and morphology. Bone marrow signal characteristics of the calvarium are homogeneously reduced which is a common finding in HgbSS disease.MRA imaging of the head is slightly degraded by motion artifact but diagnostic information is nevertheless obtained. Robust flow related signal is seen throughout the anterior and posterior circulation. No evidence of significant vascular stenosis or occlusion is seen. Mild vascular prominence along the right P1 segment is felt to be due to vascular tortuosity and/or the presence of vascular infundibula. The appearance of this segment is unchanged.
1. No evidence of acute ischemia.2. No evidence of parenchymal edema or other significant parenchymal signal abnormality.3. Stable appearance of the intracranial MRA with no evidence to suggest high-grade vascular stenosis or occlusion.