Multi-Slice CT Angiography in Diagnosing Total Versus Near Occlusions of the Internal Carotid Artery: Comparison with Catheter Angiography

Chi Jen Chen, Tsong Hai Lee, Hui-Ling Hsu, Ying Chi Tseng, Shinn Kuang Lin, Li Jen Wang, Yon Cheong Wong

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

Background and Purpose-To determine the accuracy of multislice computed tomographic (CT) angiography in diagnosing total versus near occlusions of the internal carotid artery (ICA). Methods-Fifty-seven ICA total or near occlusions identified by catheter angiography were studied with multislice CT angiography 1 to 3 days after catheter angiography. CT angiography in diagnosing total versus near occlusions was analyzed by 2 radiologists independently. The results were compared with those of catheter angiography. Results-Catheter angiography depicted 31 total occlusions, including 10 without a stump, 19 with a stump 2 cm. Among them, 22 had a downward extent of the retrograde ICA flow at or above the carotid siphon, 8 at the carotid canal, and 1 at the distal cervical ICA. Catheter angiography depicted 26 near occlusions, including 21 with a tight stenosis at the proximal third cervical ICA, 1 at the middle third, and 4 at the carotid canal or siphon. CT angiography correctly depicted all total and near occlusions. In total occlusions, the length of the stump and the retrograde flow were all accurately described by CT angiography. In near occlusions, the sites of tight stenoses were also correctly identified by CT angiography. Conclusions-Multislice CT angiography had an excellent correlation with catheter angiography in diagnosing total versus near occlusion of the ICA. It may be considered as a substitute of catheter angiography in confirming the ultrasonographic results in diagnosing total versus near occlusions of the ICA.

Original languageEnglish
Pages (from-to)83-85
Number of pages3
JournalStroke
Volume35
Issue number1
DOIs
Publication statusPublished - Jan 2004
Externally publishedYes

Keywords

  • Angiography, computed tomographic
  • Carotid arteries
  • Carotid stenosis
  • Computed tomography

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Neuroscience(all)

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