Enhancement patterns of hilar bile duct wall of ischemic-type biliary lesion on contrast-enhanced ultrasound / 中华超声影像学杂志

ABSTRACT

Objective To study the enhancement patterns of hilar bile duct wall of ischemic-type biliary lesion (ITBL) on contrast-enhanced ultrasound (CEUS).Methods Eighteen healthy subjects,18 orthotropic liver transplantation (OLT) recipients without complications,and 36 patients,which were subdivided into 2 groups according to the final diagnosispatients with (n =24) and without (n =12)ITBL,were enrolled in this study.The patients without ITBL had anastomotic biliary stricture (n =3),cholangitis (n =4),biliary sludge (n =1),and acute rejection (n =4),respectively.The images of baseline sonography and CEUS were retrospectively analyzed in consensus by 2 readers.The enhancement time and level of hilar bile duct wall,hepatic artery and liver parenchyma were recorded.Results Hilar bile duct wall became enhancing earlier than liver parenchyma in all of 4 groups.During arterial phase,hyper-or isoenhancing bile duct walls were present in most cases in the groups of healthy subjects,OLT recipients without complications and patients without ITBL.However,non-or hypo-enhancement of hilar bile duct wall were present in 16 (66.7％) ITBL patients,which is different from the other groups (P ＜0.05).Conclusions The main features of ITBL differing from the other groups were non-or hypo-enhancement of hilar bile duct wall in arterial phase.It may be a diagnostic index to apply in detecting ITBL with CEUS.