 ORBITS: This portion of the exam is mildly degraded by motion artifact. The optic nerves are symmetric and normal in size and signal intensity. There is no intraorbital mass or abnormal enhancement. There is no chiasmatic mass or parasellar abnormality. The extraocular muscles are unremarkable.BRAIN: There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is a 1 mm focus of T1 (series 301, image 20/37) and FLAIR (series 401, image 20/37) hypointensity just superior to the body of the right corpus callosum in the region of the pericallosal sulcus. On axial T2 image (series 601, image 23/33) and post Gad sagittal image (series 1901, image 18/33) show focal ectatic CSF space with normal sized vascular signal voids from the right pericallosal artery without abnormal enhancement. Therefore, this is most likely represent right pericallosal artery with possible focal azygos variation. The possibility of other vascular lesion such as arteriovenous malformation or aneurysm is less likely and further imaging evaluation such as CT angiography may not be necessary unless clinically indicated. There are a couple of scattered punctate foci of T2 and FLAIR hyperintensity within the supratentorial white matter. These lesions are non specific in nature.There is no abnormal intracranial enhancement. 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 skull, paranasal sinuses, and scalp soft tissues are unremarkable. There is minimal fluid within left mastoid air cells.
1.Normal orbital MRI.2.A couple of scattered punctate foci of T2 and FLAIR hyperintensity within the supratentorial white matter which are nonspecific. 3.A small focus of low signal intensity in the region of the right pericallosal artery may simply represent focal azygos variation of the right pericallosal artery. Further characterization may not be necessary unless clinically indicated as described above.