The aim of this study was to determine the feasibility and usefulness of contrast-enhanced magnetic resonance angiography (CE-MRA) and 3-dimensional (3D) time-of-flight (TOF) MRA for follow-up of intracranial aneurysms treated using the Enterprise stent.
Five aneurysm cases using the Enterprise stent were prospectively analyzed and were followed up with CE-MRA, 3D TOF MRA, and digital subtraction angiography (DSA). Depictions of parent artery lumen and the aneurysm neck with 3D TOF MRA and CE-MRA were compared with those of DSA.
In all cases, on 3D TOF MRA, it was difficult to evaluate the parent artery lumen and aneurysm neck owing to the significant artifacts from the stent. Contrast-enhanced MRA sufficiently demonstrated parent artery lumen and aneurysm neck distinctly and as clear as DSA did in all cases.
For follow-up after coiling with an Enterprise stent, CE-MRA may be necessary to avoid susceptibility artifacts caused by the stent.
From the *Department of Radiology and Interventional Neuroradiology, Ishinkai Yao General Hospital, Osaka; †Department of Radiology, Nara Medical University, Nara; and ‡Department of Neurosurgery, Ishinkai Yao General Hospital, Osaka, Japan.
Received for publication May 18, 2011; accepted June 30, 2011.
Reprints: Katsutoshi Takayama, MD, PhD, Department of Radiology and Interventional Neuroradiology, Ishinkai Yao General Hospital, 1-41 Numa Yao, Osaka 581-0036, Japan (e-mail: firstname.lastname@example.org).
The authors declare that they have no conflict of interest.