Introduction 1 4 5 6 7 8 Methods weighted 3 vol 9 Case illustrations Case 1 1 1 Fig. 1 a b a b c d c d  2 2 10 Fig. 2 a b c 1 b c  Case 2 3 3 Fig. 3 a b a b c d c d  4 4 Fig. 4 a b a b b arrow c d arrow  Discussion 1 3 11 5 6 10 12 Possible drawbacks of the iv-ACT technique first include movement artifacts. The patient has to lie nearly motionless for about 20 seconds, which requires a high level of compliance and is not always feasible in patients suffering from cerebrovascular disease. 13 14 Iv-ACT is a promising new technique for minimally invasive follow-up after intracranial stenting. Other possible applications can be envisaged, such as diagnostic and follow-up imaging before and after endovascular treatment of intracranial aneurysms or arteriovenous malformations.