40. Regarding the condition in Figure 54, which single statement is incorrect?



Figure 54

A) Repeating the sequence with gadolinium would not be helpful.
B) Both anterior and posterior circulations are involved.
C) The procedure shown does not obviate the need for conventional angiography.
D) Repeating the study after surgery will often be nondiagnostic.
E) The condition can sometimes be manifested by seizures or infarction.