Headache and dizziness. MRI: There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.MRA: There is no evidence of significant steno-occlusive lesions in the head and neck arteries. There is no evidence of cerebral saccular aneurysms. The left vertebral artery arises directly from the aortic arch, which is an anatomic variant.
1. No evidence of acute intracranial hemorrhage, mass, or acute infarct.2. No evidence of significant steno-occlusive lesions in the head and neck arteries. 