Document Detail

Abdominal aortic aneurysm morphology in candidates for endovascular repair evaluated with spiral computed tomography and digital subtraction angiography.
MedLine Citation:
PMID:  10495149     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To analyze the morphology of abdominal aortic aneurysms (AAAs) and to study the usefulness of spiral computed tomography (CT) versus digital subtraction angiography (DSA) in the evaluation of patients for endovascular repair. METHODS: Of 133 AAA patients (120 men, mean age 67 years, range 52 to 84) evaluated preoperatively with CT imaging, 77 endograft candidates (68 men) were also assessed with intra-arterial DSA. Arterial parameters were measured on axial CT scans and angiographic films for comparison. RESULTS: Mean maximum AAA diameter was 58 +/- 11 mm (range 39 to 95). Aneurysmal neck diameter was consistently smaller on DSA than on CT (20.7 +/- 3.6 mm versus 23.0 +/ 3.5 mm, p < 0.0001). The distance from the most distal renal artery to the aortic bifurcation was longer on angiography than on CT (mean difference 10.0 mm, p < 0.0001). There was a positive correlation between the maximum AAA diameter and the AAA length (r = 0.49, p < 0.0001) and an inverse relationship between the neck length and the neck diameter (r = -0.36, p < 0.0001). No correlation was found between the maximum AAA diameter and maximum iliac diameter, angulation, or length. CONCLUSIONS: AAA anatomy varies widely and independently of the aneurysm size. Therefore, the maximum size of the aneurysm is a poor predictor of whether or not an aneurysm is suitable for endovascular repair. The discrepancy between angiographic and axial CT measurements suggests that neither alone is sufficient as a preoperative imaging technique when evaluating a patient for an endovascular graft procedure.
T Resch; K Ivancev; M Lindh; N Nirhov; U Nyman; B Lindblad
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of endovascular surgery : the official journal of the International Society for Endovascular Surgery     Volume:  6     ISSN:  1074-6218     ISO Abbreviation:  J Endovasc Surg     Publication Date:  1999 Aug 
Date Detail:
Created Date:  1999-11-02     Completed Date:  1999-11-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9500580     Medline TA:  J Endovasc Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  227-32     Citation Subset:  IM    
Department of Radiology, Malmö University Hospital, Lund University, Sweden.
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MeSH Terms
Aged, 80 and over
Angiography, Digital Subtraction / methods*
Aortic Aneurysm, Abdominal / radiography*,  surgery
Blood Vessel Prosthesis Implantation*
Middle Aged
Tomography, X-Ray Computed / methods*

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