BACKGROUND: Extrahepatic portal vein obstruction (EHPVO) is a common cause of paediatric portal hypertension and the only permanent treatment is shunt surgery. The inferior mesenteric vein (IMV) is a portal venous channel that can be used for the shunt when the splenic vein/superior mesenteric vein is thrombosed or when a lienorenal shunt is not possible. OBJECTIVE: To compare MDCT venography (MDCTV) and contrast-enhanced MR venography (CEMRV) for visualisation of the IMV in children with EHPVO. MATERIALS AND METHODS: This was a prospective study of 26 children (4-12 years, median 10 years) who underwent MDCTV and CEMRV. The IMV visualisation was graded using 4- and 2-point scales and the difference in visualisation was assessed by calculating the exact significance probability (P). RESULTS: The IMV was visualised in all children on MDCTV and 25/26 children on CEMRV (96%). The images were diagnostic in 23/26 children (88%) on MDCTV and in 18/26 (69%) children on CEMRV (P=0.063). CONCLUSION: MDCTV and CEMRV are comparable for IMV visualisation with a tendency toward MDCTV being superior.
BACKGROUND: Extrahepatic portal vein obstruction (EHPVO) is a common cause of paediatric portal hypertension and the only permanent treatment is shunt surgery. The inferior mesenteric vein (IMV) is a portal venous channel that can be used for the shunt when the splenic vein/superior mesenteric vein is thrombosed or when a lienorenal shunt is not possible. OBJECTIVE: To compare MDCT venography (MDCTV) and contrast-enhanced MR venography (CEMRV) for visualisation of the IMV in children with EHPVO. MATERIALS AND METHODS: This was a prospective study of 26 children (4-12 years, median 10 years) who underwent MDCTV and CEMRV. The IMV visualisation was graded using 4- and 2-point scales and the difference in visualisation was assessed by calculating the exact significance probability (P). RESULTS: The IMV was visualised in all children on MDCTV and 25/26 children on CEMRV (96%). The images were diagnostic in 23/26 children (88%) on MDCTV and in 18/26 (69%) children on CEMRV (P=0.063). CONCLUSION:MDCTV and CEMRV are comparable for IMV visualisation with a tendency toward MDCTV being superior.
Authors: Chang Hyun Lee; Jin Mo Goo; Hyun Ju Ye; Sung-Joon Ye; Chang Min Park; Eun Ju Chun; Jung-Gi Im Journal: Radiographics Date: 2008 Sep-Oct Impact factor: 5.333
Authors: O Graf; G W Boland; J A Kaufman; A L Warshaw; C Fernandez del Castillo; P R Mueller Journal: AJR Am J Roentgenol Date: 1997-05 Impact factor: 3.959