Usefulness of contrast-enhanced magnetic resonance angiography for follow-up of coil embolization with the enterprise stent for cerebral aneurysms

J Comput Assist Tomogr. Sep-Oct 2011;35(5):568-72. doi: 10.1097/RCT.0b013e31822bd498.

Abstract

Objective: 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.

Methods: 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.

Results: 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.

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

Publication types

  • Comparative Study

MeSH terms

  • Aged
  • Angiography, Digital Subtraction
  • Artifacts
  • Cerebral Angiography / methods*
  • Contrast Media
  • Embolization, Therapeutic / instrumentation
  • Feasibility Studies
  • Female
  • Humans
  • Imaging, Three-Dimensional
  • Intracranial Aneurysm / pathology*
  • Intracranial Aneurysm / therapy*
  • Iopamidol
  • Magnetic Resonance Angiography / methods*
  • Middle Aged
  • Prospective Studies
  • Stents*
  • Treatment Outcome

Substances

  • Contrast Media
  • Iopamidol