Usefulness of Contrast-Enhanced Magnetic Resonance Angiography for Follow-Up of Coil Embolization With the Enterprise Stent for Cerebral Aneurysms

Abstract

For follow-up after coiling with an Enterprise stent, CE-MRA may be necessary to avoid susceptibility artifacts caused by the stent.

Efficacy of Skull Plain Films in Follow-up Evaluation of Cerebral Aneurysms Treated with Detachable Coils: Quantitative Assessment of Coil Mass

“…10,11 Unlike MRA, the additional advantage of skull plain films is that their diagnostic accuracy is not affected by the coil materials or device assistance, including stents. 12,13 There were some limitations in this study. First, the study design was retrospective for a small number of cases, which might not be enough to draw a conclusion in proving the efficacy of skull plain films.…”

“…6,7 However, these imaging studies have some disadvantages in reality. [8][9][10][11][12][13] In contrast, skull plain films have been conventional imaging tools because they are simple, inexpensive, less invasive, and applicable to every patient under any circumstances. However, the efficacy of skull plain films has been infrequently reported in the follow-up imaging of coiled aneurysms, [14][15][16] in which the detailed methods used for analysis were obscure and their reliability questionable.…”

Assessing Blood Flow in an Intracranial Stent: A Feasibility Study of MR Angiography Using a Silent Scan after Stent-Assisted Coil Embolization for Anterior Circulation Aneurysms

“…Compared with TOF MRA, Silent MRA images are easy to interpret because they consist of only the labeled blood flow signal. Takayama et al 16 reported that contrast-enhanced MRA is useful when visualizing flow in a stent, though DSA remains a superior follow-up tool for stent-assisted coil embolization. Also, while rare, contrast agents might induce serious adverse events such as anaphylaxis or nephrogenic systemic fibrosis.…”

Enterprise Stent-assisted Cerebral Aneurysm Coiling: Can Antiplatelet Therapy be Terminated after Neointima Formation with the Enterprise Stent?

“…In our study, stent occlusion was evaluated by CE-MRA or DSA, because it is difficult to evaluate the patency of artery on time-of-flight MRA due to susceptibility artifact from the ES. 17) In current study, there was no stent occlusion and no recurrence of aneurysm in all 10 patients who underwent follow-up with CE-MRA.…”