Detection of occlusive lesions in intracranial arteries by three-dimensional time-of-flight magnetic resonance angiography

Toshiyuki Uehara, Etsuro Mori, Masayasu Tabuchi, Yukio Ohsumi, Atsushi Yamadori

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

To evaluate the accuracy of 3-dimensional time-of-fiight magnetic resonance angiography (3D TOF MRA) for detecting intracranial arterial occlusive disease, this technique was compared with conventional angiography. The subjects were 54 patients with cerebrovascular ischemic disease. Using a semi- quantified grading scheme, stenotic lesions were assessed for each segment of the intracranial arteries to the level of the second segment. A high correlation in the degree of stenosis (Spearman rank correlation = 0.68. p = 0.0001, k statistic = 0.846) and an extremely high sensitivity (100%) for detecting occlusive lesions were found. Specificity for each segment of the intracranial arteries varied from 94.8% (Ml portion of the middle cerebral artery) to 83.3% (A1 portion of the anterior cerebral artery). However, mild stenosis tended to be slightly overestimated, and false-positive readings in specific parts of the vessels (the carotid siphon, the anterior cerebral artery orifice, and the middle cerebral artery bifurcation) were not insubstantial. We conclude that despite a relatively high false-positive rate in some regions, 3D TOF MRA is useful for evaluating intracranial major vessels in stroke patients.

Original languageEnglish
Pages (from-to)365-370
Number of pages6
JournalCerebrovascular Diseases
Volume4
Issue number5
DOIs
Publication statusPublished - 1994 Jan 1

Keywords

  • Angiography
  • Cerebrovascular disease
  • Diagnosis
  • Magnetic resonance angiography

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine

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