[The evaluation of lower limb arteriopathy by multidetector computed tomography compared with digital subtraction angiography].
OBJECTIVE
To evaluate the diagnostic efficacy of multidetector computed tomography angiography (MDCTA) in lower limb arteriopathy (LLA) by comparing it with digital subtraction angiography (DSA).


METHODS
Twenty-four patients with LLA were studied. All patients underwent MDCTA (four detectors) and DSA, with double reading between the two techniques. Vascular territories were divided to facilitate analysis. Sensitivity (S), specificity (Sp), prevalence, positive and negative predictive values (PPV, PNV), and concordance (Kappa test) were evaluated. In third-portion arteries, the diagnostic performance of MDCTA was evaluated using an ROC curve.


RESULTS
MDCTA study to evaluate arterial pathology showed: Lower sensitivity in the study of the internal iliac artery (S: 0.65 and 0.71) with Sp 0.94 and 1. In the other vascular territories, S approached 1, with a slight decrease in Sp. Concordance with DSA was very high (kappa between 0.62 and 1) in all of the territories studied. MDCTA showed greater vessel longitude than DSA. In the third portion, the best diagnostic performance (ROC) was obtained in the reading of pathological vessels.


CONCLUSIONS
MDCTA was highly reliable in the study of LLA, with high concordance with DSA. In tortuous vessels, MDCTA depicted the lesions poorly; however, in straight vessels and third-portion vessels, MDCTA showed more vascular segments.
Ferrer
M D
MD
Servicio de Radiología, Hospital de la Ribera, Alzira, Valencia, España. mferrer@hospital-ribera.com
Revert
A J
AJ
Pallardó
Y
Y
Esteban
E
E
Jornet
J
J
Mollá
E
E
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015901:Angiography, Digital Subtraction; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D001161:Arteriosclerosis / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging; D007866:Leg / Q000098:blood supply* / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D012372:ROC Curve; D014057:Tomography, X-Ray Computed / Q000379:methods*