title: Diagnosis of abdominal venous thrombosis by means of spin-echo and gradient-echo MR imaging: analysis with receiver operating characteristic curves.
abstract: The authors compared the accuracy of spin-echo (SE) and gradient-echo (GRE) magnetic resonance images in diagnosis of abdominal venous thrombosis. Images of 292 abdominal veins in 72 patients were reviewed in a blinded manner by three radiologists, with seven levels of confidence for diagnosis. Corroborative studies proved thrombosis (n = 95) and vessel patency (n = 197). Receiver operating characteristic (ROC) curves were constructed for SE images alone, GRE images alone, and SE and GRE images combined. At specificities of 90% and 95%, thrombi were identified with sensitivities, respectively, of 76% and 63% with SE images, 74% and 58% with GRE images, and 88% and 82% with combined SE and GRE images. The area under the ROC curve for SE and GRE images combined (0.958 +/- 0.011 [standard deviation]) was significantly larger (P less than .001) than that for SE images alone (0.913 +/- 0.018) and GRE images alone (0.921 +/- 0.016). It is concluded that combination of SE and GRE images significantly increases the accuracy of diagnosis of abdominal venous thrombosis.
authors.affiliation: Department of Radiology, Hôpital Beaujon, Clichy, France.
authors.forename: L
authors.initials: L
authors.lastname: Arrivé
authors.forename: Y
authors.initials: Y
authors.lastname: Menu
authors.forename: I
authors.initials: I
authors.lastname: Dessarts
authors.forename: B
authors.initials: B
authors.lastname: Dubray
authors.forename: M P
authors.initials: MP
authors.lastname: Vullierme
authors.forename: V
authors.initials: V
authors.lastname: Vilgrain
authors.forename: D
authors.initials: D
authors.lastname: Najmark
authors.forename: H
authors.initials: H
authors.lastname: Nahum
mesh_terms: D000005:Abdomen / Q000098:blood supply*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012372:ROC Curve; D013927:Thrombosis / Q000175:diagnosis*; D014680:Veins / Q000473:pathology