Echocardiogram-gated computed tomographic and magnetic resonance angiographies for the detection of pulsatile expansion at the intracranial arterial bifurcation

Young Jun Lee, Tae Sub Chung, Yoon Chul Rhim, Sang Hyun Suh, Thomas K F Foo

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE: To identify the pulsatile small vascular lesion by echocardiogram (ECG)-gated computed tomographic (CT) and magnetic resonance (MR) angiographies. METHODS: Seven patients who exhibited small evagination at the cerebral artery bifurcations on 3-dimensional (3D) time-of-flight MR angiogram were enrolled. They were examined by conventional/ECG-gated CT angiogram (n = 6) and ECG-gated MR angiogram (n = 5). Echocardiogram-gated MR angiogram was performed with 3D time of flight, triggered after each time window. From ECG-gated CT and MR angiograms, consecutive 10-phase images within a single cardiac cycle were obtained. RESULTS: The pulsatile change of evagination was demonstrated on both ECG-gated CT angiogram (5 of 6 patients) and ECG-gated MR angiogram (all 5 patients). Flattening of the evagination during the diastolic phase was observed in 4 of 6 ECG-gated CT angiograms and 3 of 5 ECG-gated MR angiograms. Of note was a patient with a tiny evagination (

Original languageEnglish (US)
Pages (from-to)842-846
Number of pages5
JournalJournal of Computer Assisted Tomography
Volume34
Issue number6
DOIs
StatePublished - Nov 2010
Externally publishedYes

Keywords

  • aneurysm
  • angiography
  • brain
  • cerebrovascular disorders
  • magnetic resonance imaging

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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