3.0-Tesla MR angiography of intracranial aneurysms: Comparison of Time-of-Flight and Contrast-Enhanced techniques

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

Purpose: To determine whether 3.0-T elliptical-centric contrast-enhanced (CE) magnetic resonance (MR) angiography is superior to 3.0-T elliptical-centric time-of-flight (TOF) MR angiography in the detection and characterization of intracranial aneurysms, and to determine whether increasing the acquisition matrix size in 3.0-T CE MR angiography improves image quality. Materials and Methods: A total of 50 consecutive patients referred for MR angiographic evaluation of a known or suspected intracranial aneurysm underwent MR angiography, including three-dimensional TOF and elliptical-centric CE techniques at 3.0 T. The 3.0-T three-dimensional TOF and 3.0-T CE examinations were graded for image quality. A blind review identified the presence and location of aneurysms. Results: A total of 28 aneurysms were identified in 23 of the 50 patients. The 3.0-T TOF MR angiography had a higher mean score for image quality than the 3.0-T elliptical-centric CE MR angiography (P < 0.0001). A total of 14 patients with aneurysms had conventional angiography for comparison. The 3.0-T TOF showed all the aneurysms, whereas 3.0-T CE MR angiography did not show 1 of 19 aneurysms when conventional angiography was the reference standard. Conclusion: For imaging intracranial aneurysms, 3.0-T TOF MR angiography offers better image quality than 3.0-T CE MR angiography using the elliptical-centric technique.

Original languageEnglish (US)
Pages (from-to)97-102
Number of pages6
JournalJournal of Magnetic Resonance Imaging
Volume21
Issue number2
DOIs
StatePublished - Feb 1 2005

Keywords

  • 3T and/or high field
  • Contrast-enhanced magnetic resonance angiography
  • Intracranial aneurysm
  • Magnetic resonance angiography
  • Time-of-flight magnetic resonance angiography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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