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Titolo:
Is the aspect ratio a reliable index for predicting the rupture of a saccular aneurysm?
Autore:
Ujiie, H; Tamano, Y; Sasaki, K; Hori, T;
Indirizzi:
Tokyo Womens Med Univ, Neurol Inst, Dept Neurosurg, Shinjuku Ku, Tokyo 1628666, Japan Tokyo Womens Med Univ Tokyo Japan 1628666 njuku Ku, Tokyo 1628666, Japan
Titolo Testata:
NEUROSURGERY
fascicolo: 3, volume: 48, anno: 2001,
pagine: 495 - 502
SICI:
0148-396X(200103)48:3<495:ITARAR>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNRUPTURED INTRACRANIAL ANEURYSMS; CEREBRAL ANEURYSMS; ENDOTHELIAL-CELLS; NATURAL-HISTORY; SHEAR-STRESS; FLOW; SIZE; LOCALIZATION; EXPRESSION; HEMORRHAGE;
Keywords:
aspect ratio; subarachnoid hemorrhage; unruptured aneurysm;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Ujiie, H Tokyo Womens Med Univ, Neurol Inst, Dept Neurosurg, Shinjuku Ku, 8-1 Kawada Cho, Tokyo 1628666, Japan Tokyo Womens Med Univ 8-1 Kawada Cho Tokyo Japan 1628666 , Japan
Citazione:
H. Ujiie et al., "Is the aspect ratio a reliable index for predicting the rupture of a saccular aneurysm?", NEUROSURGER, 48(3), 2001, pp. 495-502

Abstract

OBJECTIVE: The present retrospective study was undertaken to prove the reliability of the aspect ratio (aneurysm depth to aneurysm neck width) for predicting an aneurysmal rupture. The aspect ratio is considered a better geometric index than aneurysm size for determining the intra-aneurysmal blood flow. METHODS: We measured the aspect ratios and the sizes of aneurysms, as determined by examining angiographic films magnified 1.4 x, in 129 patients with ruptured aneurysms and in 72 patients with 78 unruptured aneurysms. Aftercategorizing the aneurysms into four groups on the basis of their locations (aneurysms of the anterior communicating artery, middle cerebral artery, internal carotid artery-posterior communicating artery [ICA-PComA], and other aneurysms), a statistical analysis of ruptured and unruptured aneurysms was performed. RESULTS: The mean aneurysm size was found to be statistically significant in the aneurysms at the ICA-PComA and in locations excluding the anterior communicating artery, the middle cerebral artery, and the ICA-PComA. However, the mean aspect ratio was statistically significant at all four locations. In patients with ruptured aneurysms, no ruptured aneurysms with an aspectratio of less than 1.0 were found. The distribution of the ruptured group versus the unruptured group with an aspect ratio of less than 1.6 at each location was 13 versus 79%, respectively, at the anterior communicating artery, 11 versus 58% at the middle cerebral artery, 11% versus 85% at the ICA-PComA, and 7 versus 81% at other locations. CONCLUSION: The aspect ratio between ruptured aneurysms and unruptured aneurysms was found to be statistically significant, and almost 80% of the ruptured aneurysms showed an aspect ratio of more than 1.6, whereas almost 90%of the unruptured aneurysms showed an aspect ratio of less than 1.6. This study therefore suggests that the aspect ratio may be useful in predicting imminent aneurysmal ruptures.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 16:59:21