artery outer diameter middle cerebral artery outer diameter 2021-01-04T17:10:09Z CMO:0003625 MCA external diameter MCA outer diameter PMID:22508433 The length of a line which crosses a transverse view of a middle cerebral artery, passing through its center and ending on either side at the outer surface of the blood vessel wall. The middle cerebral arteries are the largest of the cerebral arteries and supply blood to the lateral cerebral cortex, anterior temporal lobes and insular cortices of the brain. VT:0010921 clinical_measurement_ontology middle cerebral artery external diameter slaulede