Case 9: 53-year-old man with an unruptured aneurysm on a screening test.
A, DSA image reveals a small aneurysm less than 2 mm (arrow) at the superior border of the AcomA.
B, MIP MR angiogram shows a small aneurysmal sac (arrow) at the AcomA.
C, Magnified MPR image shows a small outpouching of vessel lumen (arrow) at the same site of the AcomA that was confirmed during surgery to be an unruptured aneurysm.