title: MDCT diagnosis of post-traumatic hepatic arterio-portal fistulas.
abstract: The purpose of this study is to evaluate the performance of multidetector computed tomography (MDCT) in diagnosing arterioportal fistulas (APF) in high-grade liver injury. A retrospective analysis of catheter-based hepatic angiograms performed for major penetrating and blunt liver injuries identified 11 patients with APFs. Using the trauma registry, two additional demographically matched groups with and without liver injury were formed. A randomized qualitative consensus review of 33 MDCTs was performed by three trauma radiologists for the following MDCT findings of APF: transient hepatic parenchymal attenuation differences (THPAD), early increased attenuation of a peripheral or central portal vein compared with the main portal vein, and the "double-barrel" or "rail tract" signs. THPAD was the most sensitive finding and also had a high specificity for diagnosing APF. Both the early increased attenuation of a peripheral or central portal vein compared with the main portal vein and the double-barrel or rail tract signs had a100% specificity and a sensitivity of 64% and 36%, respectively. Measurement of differences in attenuation values between the APF and the contralateral central portal vein was most sensitive and specific in diagnosing APF. Traumatic APF of the liver can be optimally diagnosed with arterial phase imaging of solid organ using MDCT.
authors.affiliation: Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland, Baltimore, MD 21201, USA.
authors.forename: Cuong T
authors.initials: CT
authors.lastname: Nguyen
authors.forename: Coung
authors.initials: C
authors.lastname: Nguyen
authors.forename: Nitima
authors.initials: N
authors.lastname: Saksobhavivat
authors.forename: Nitima
authors.initials: N
authors.lastname: Saksobahavivat
authors.forename: Kathirkamanathan
authors.initials: K
authors.lastname: Shanmuganathan
authors.forename: Scott D
authors.initials: SD
authors.lastname: Steenburg
authors.forename: Scott
authors.initials: S
authors.lastname: Steenburg
authors.forename: Fred M
authors.initials: FM
authors.lastname: Moeslein
authors.forename: Fred
authors.initials: F
authors.lastname: Moeslein
authors.forename: Stuart E
authors.initials: SE
authors.lastname: Mirvis
authors.forename: William
authors.initials: W
authors.lastname: Chiu
mesh_terms: D000328:Adult; D001164:Arteriovenous Fistula / Q000000981:diagnostic imaging* / Q000209:etiology; D005260:Female; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006801:Humans; D008099:Liver / Q000293:injuries*; D008297:Male; D061330:Multidetector Computed Tomography / Q000379:methods; D011169:Portal Vein; D014057:Tomography, X-Ray Computed; D055815:Young Adult