CT and Angiographic Analysis of Posterior Communicating Artery Aneurysms: What Factors Influence the Amount of Subarachnoid Blood?
Journal of the Korean Radiological Society
; : 441-447, 1998.
Article
in Ko
| WPRIM
| ID: wpr-99889
Responsible library:
WPRO
ABSTRACT
PURPOSE: To determine how clinical and angiographic factors relate to the amount of subarachnoid blooddetected by computerized tomography in patients with a ruptured aneurysm. MATERIALS AND METHODS: Between January1996 and December 1997, 22 patients with a posterior communicating artery aneurysm were retrospectively evaluated. RESULTS: Oval(three of four cases), funnel(both cases), and daughter-sac (four of five cases) types of aneurysmalsac were found among the 13 patients with a large amount of subarachnoid blood ; eight of these had a past historyof hypertension or diabetes. Seven of eleven cases of cylindrical-type aneurysmal sac were found among the 9patients with a small amount of sularachnoid blood ; eight of these had no past history of hypertension ordiabetes. The average S/N ratio (ratio of maximum sac length to neck diameter) of patients with a small amount ofblood was higher than that of patients with a large amount of blood(2.72 vs 2.07). CONCLUSION: Although manyfactors influence the amount of subarachnoid blood in an aneurysmal rupture, we found that a large amount of bloodwas frequently present in the oval, funnel and daughter sac types of aneurysm, when S/N ratio was low, and when anunderlying disease such as hypertension or diabetes was present. Conversely, a small amount of blood was presentin the cylindrical type, when S/N ratio was high, and where there was no of underlying disease.
Key words
Full text:
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Index:
WPRIM
Main subject:
Rupture
/
Nuclear Family
/
Intracranial Aneurysm
/
Retrospective Studies
/
Aneurysm, Ruptured
/
Hypertension
/
Aneurysm
/
Neck
Type of study:
Observational_studies
Limits:
Humans
Language:
Ko
Journal:
Journal of the Korean Radiological Society
Year:
1998
Type:
Article