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A, Volume rendering reconstructions of 3D rotational angiogram show a segmental pattern with several circumferential pontine arteries on the right side (arrowheads) and a dominant AICA (ellipse) and less other pontine branches on the left side in a patient with a midbasilar stenosis (*). B, Note the descending course and a small local collateral (arrow) bridging the stenosis (*) in MPR of DynaCT datasets in volume rendering technique (VRT) from the same 3DRA study.
