Measurements of the middle cerebral artery in digital subtraction angiography and MR angiography.

Background: The middle cerebral artery (MCA) has an individually varied anatomical type and course. Age and sex variability of MCA have not been completely defined. The aim was to define the range of normal values of widths and lengths of particular MCA segments, define age and sex variability, and compare the compatibility of MCA measurements of digital subtraction angiography (DSA) and MR angiography (MRA).