fig 5.

A, Angiogram of experimental aneurysm. The projection is optimized to allow best possible visualization of the lateral aneurysm's neck.

B, Intravascular sonogram of the parent artery that gives rise to the lateral aneurysm.

C, Intravascular sonogram through the lateral aneurysmal ostium. This image illustrates the ability to depict the width of the ostium (arrowheads indicate the point at which the lateral aneurysm, LA, joins the parent artery, PA; dashed line denotes the width of the ostium). In the intravascular sonograms, the distance between white marker dots is 1 mm and the intravascular sonographic catheter is defined by an asterisk.