Supra- and juxtarenal aneurysms of the abdominal aorta: preoperative assessment with thin-section spiral CT.
OBJECTIVE
To assess the contribution of thin-section spiral computed tomography (CT) to the preoperative radiologic evaluation of juxta- and suprarenal abdominal aortic aneurysms.


METHODS
Thirty-eight patients (26 men, 12 women; age range, 60-81 years) with infrarenal (n = 23), juxtarenal (n = 8), and suprarenal (n = 7) aneurysms underwent digital subtraction angiography (DSA) and 2-mm-collimation spiral CT. Cine-interactive display of overlapping axial, reformatted, and maximum intensity projection images were used for CT image analysis. CT findings were compared with angiographic and surgical findings.


RESULTS
The proximal extent of the juxta- and suprarenal aneurysms (n = 15) could be correctly predicted in 12 cases (80%) with DSA and was exactly determined in 14 (93%) with CT. All renal arteries except three accessory renal arteries were correctly depicted with spiral CT (83 of 86 [96%]). With DSA as the standard of reference, renal artery stenoses of at least 70% were accurately assessed in 95% of cases.


CONCLUSIONS
Thin-section spiral CT can provide additional information in the preoperative diagnosis of juxta- and suprarenal aneurysms.
Van Hoe
L
L
Department of Radiology, University Hospitals, Katholieke Universiteit, Leuven, Belgium.
Baert
A L
AL
Gryspeerdt
S
S
Marchal
G
G
Lacroix
H
H
Wilms
G
G
Mertens
L
L
D000368:Aged; D015901:Angiography, Digital Subtraction; D017544:Aortic Aneurysm, Abdominal / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D002445:Celiac Artery / Q000000981:diagnostic imaging; D003251:Constriction, Pathologic / Q000000981:diagnostic imaging / Q000209:etiology; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008641:Mesenteric Vascular Occlusion / Q000000981:diagnostic imaging / Q000209:etiology; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging / Q000209:etiology; D014057:Tomography, X-Ray Computed / Q000379:methods*