Computed angiotomography of unruptured cerebral aneurysms

Yuji Yamamoto, Shoji Asari, Norio Sunami, Katsuzo Kunishio, Keiji Fukui, Kazuhiko Sadamoto

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Twenty-seven unruptured cerebral aneurysms in 25 patients were detected by computed angiotomography. A comparison of the computed an- giotomographic features in common aneurysm sites with plain CT and con-ventional arteriography was carried out. An isodense, round cisternal defect and a calcification or high-density mass in the basal cisterns on plain CT are important findings suggestive of unruptured aneurysms larger than 7 mm in diameter. The identification of the aneurysm, as well as of the afferent and efferent arteries on computed angiotomography is essential for the direct di-agnosis of smaller unruptured aneurysms related to the circle of Willis. This is possible in a number of cases when the aneurysms are relatively large. It appears that the aneurysm size must be larger than 3 mm in diameter to permit its recognition on the basis of angiotomography and the avoidance of false-positive findings.

Original languageEnglish
Pages (from-to)21-27
Number of pages7
JournalJournal of Computer Assisted Tomography
Issue number1
Publication statusPublished - Jan 1 1986
Externally publishedYes


  • Aneurysm, cerebral
  • Cerebral blood vessels, Aneurysms
  • Computed to-mography
  • Computed tomographic angiography (angio-CT)

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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