FIG 2. Images from the case of a 67-year-old female patient with a right middle cerebral artery aneurysm.

A, Anteroposterior standard 2D DSA image. The aneurysm can be identified (arrow), but the identification of the presence of aneurysmal lobulation and the relationship to neighboring arteries is difficult.

B, Lateral standard 2D DSA image. The aneurysm can be identified (arrow), but the presence of aneurysmal lobulation and the relationship to neighboring arteries is difficult to discern.

C, Rotational DSA image, which can be seen stereoscopically, clearly shows the aneurysm (arrow), but the superimposition of many neighboring arteries makes it difficult to evaluate the presence of aneurysmal lobulation and the relationship to neighboring arteries.

D, MIP image clearly shows the aneurysmal lobulation and relationship to neighboring arteries (arrow).

E, SSD image is especially clear in showing the aneurysmal lobulation and relationship to neighboring arteries.