new onset headache No evidence of acute ischemic or hemorrhagic lesion.The ventricles, sulci and cisterns are symmetric and unremarkable. The gray-white matter differentiation is normal. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate about 30% of luminal narrowing at the mid basilar artery. however, this is exactly overlapping with MRA acquisition slap. Therefore, this could represent an artifact. However, if there is any clinical suspicion on intracranial arterial stenosis, CT angiography can be considered for further evaluation.Otherwise bilateral ICAs, MCAs and ACAs appear to be normal. Specifically, there is no evidence of intracranial arterial aneurysm, other significant luminal stenosis or evidence suggesting arteriovenous malformation.
1. CLINICAL INFORMATION:disturbance of skin sensationCOMPARISON: None.TECHNIQUE: MRI brain without contrast and MRA brain without contrast were performed. FINDINGS:There is 13mm x 9mm x 5mm sized lesion with ectatic venous structure indicating arteriovenous malformation on the left middle posterior temporal gyrus possibly within the left lateral occipital sulcus. There is no associated hemorrhage or surrounding edema.No evidence of acute ischemic or hemorrhagic lesion.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, or restricted diffusion/acute ischemia. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate enlarged left MCA angular branch with vascular blushing on the left temporo occipital lobe area indicating AVM.Otherwise unremarkable brain MRA.