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(FRAME-INFO (STRING "MRI, Cerebral Arteries. \(Scans compliments of Dr. K. Maravilla, Dept. of Radiology, University of Washington\). In A, an axial \(horizontal\) MRI \(Magnetic Resonance Image\) was made through the brain of a volunteer at the level of the hypothalamus \(1.5 mm slice thickness\).  Note the segment of the middle cerebral artery in the lateral fissure on the left side.  In a later study, shown in B, an MRI angiogram \(several centimeters slice thickness\), optimized to show blood vessels, was made of the same volunteer. Note that the same segment of the left middle cerebral artery can be seen within the course of that vessel. Identify the branches of the middle cerebral arteries and the posterior cerebral arteries in the image on the right."))
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