Can neck size in elastase-induced aneurysms be controlled? A prospective study

Yong Hong Ding, Daying Dai, Debra A. Lewis, Mark A. Danielson, Ramanathan Kadirvel, Jayawant N. Mandrekar, Harry J. Cloft, David F. Kallmes

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

BACKGROUND AND PURPOSE: An earlier retrospective study indicated that the neck size of elastase-induced aneurysms could be controlled by adjusting the position of the inflated balloon. We report the current prospective study to confirm our previous work. METHODS: Ninety elastase-induced aneurysms were created in rabbits. Group 1 (n = 62) included cases in which the occlusion balloon resided low, completely within the brachiocephalic/subclavian arteries. Group 2 (n = 28) included cases in which the balloon resided high, within both the common carotid artery and brachiocephalic/subclavian arteries. Follow-up digital subtraction angiography was performed. The aneurysm sizes were measured and compared between groups. The Student t test and the Fisher exact test were used for statistical analysis. RESULTS: The mean aneurysm neck diameter and width for group 1 was significantly larger than that of group 2 (3.4 ± 1.2 and 2.3 ± 0.9 mm, P < .001; 3.8 ± 1.0 and 3.3 ± 0.9 mm, P < .05, respectively). The proportion of wide-necked aneurysms in group 1 was significantly larger than that in group 2 (29% vs 4%; P < .005). Mean dome-to-neck ratios were 1.2 ± 0.4 and 1.7 ± 0.7 for groups 1 and 2 (P < .005). There was no significant difference in aneurysm height between groups 1 and 2 (8.0 ± 1.7 and 7.5 ± 2.2 mm; P > .05). CONCLUSION: The neck size of elastase-induced aneurysm models in rabbits can be controlled by adjusting the position of the inflated balloon.

Original languageEnglish (US)
Pages (from-to)2364-2367
Number of pages4
JournalAmerican Journal of Neuroradiology
Volume26
Issue number9
StatePublished - Dec 1 2005

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology

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