Piero Boraschi1, Francescamaria Donati2, Federica Pacciardi2, Davide Ghinolfi3, Fabio Falaschi2. 1. Department of Diagnostic Imaging - Pisa University Hospital, Via Paradisa 2, 56124 Pisa, Italy. Electronic address: p.boraschi@do.med.unipi.it. 2. Department of Diagnostic Imaging - Pisa University Hospital, Via Paradisa 2, 56124 Pisa, Italy. 3. Hepatobiliary Surgery and Liver Transplantation - Pisa University Hospital, Via Paradisa 2, 56124 Pisa, Italy.
Abstract
PURPOSE: Our study was aimed to assess the diagnostic value of MR cholangiopancreatography (MRCP) and MR imaging at 3 T device when evaluating biliary adverse events after liver transplantation. MATERIALS AND METHODS: A series of 384 MR examinations in 232 liver transplant subjects with suspected biliary complications (impaired liver function tests and/or biliary abnormalities on ultrasound) were performed at 3 T device (GE-DISCOVERY MR750; GE Healthcare). After the acquisition of axial 3D dual-echo T1-weighted images and T2-weighted sequences (propeller and SS-FSE), MRCP was performed through coronal thin-slab 3D-FRFSE and coronal oblique thick-slab SSFSE T2w sequences. DW-MRI of the liver was performed using an axial spin-echo echo-planar sequence with multiple b values (150, 500, 1000, 1500 s/mm2) in all diffusion directions. Contrast-enhanced MRCP was performed in 25/232 patients. All MR images were blindly evaluated by two experienced abdominal radiologists in consensus to determine the presence of biliary complications, whose final diagnosis was based on direct cholangiography, surgery and integrating clinical follow-up with ultrasound and/or MRI findings. RESULTS: In 113 patients no biliary abnormality was observed. The remaining 119 subjects were affected by one or more of the following complications: non-anastomotic strictures including typical ischemic-type biliary lesions (n = 67), anastomotic strictures (n = 34), ampullary dysfunction (n = 4), anastomotic leakage (n = 4), stones, sludge and casts (n = 65), vanishing bile duct (n = 1). The sensitivity, specificity, PPV, NPV and diagnostic accuracy of the reviewers for the detection of all types of biliary complications were 99%, 96%, 95%, 99% and 97%, respectively. CONCLUSION: MR cholangiopancreatography and MR imaging at 3 T device are extremely reliable for detecting biliary complications after liver transplantation.
PURPOSE: Our study was aimed to assess the diagnostic value of MR cholangiopancreatography (MRCP) and MR imaging at 3 T device when evaluating biliary adverse events after liver transplantation. MATERIALS AND METHODS: A series of 384 MR examinations in 232 liver transplant subjects with suspected biliary complications (impaired liver function tests and/or biliary abnormalities on ultrasound) were performed at 3 T device (GE-DISCOVERY MR750; GE Healthcare). After the acquisition of axial 3D dual-echo T1-weighted images and T2-weighted sequences (propeller and SS-FSE), MRCP was performed through coronal thin-slab 3D-FRFSE and coronal oblique thick-slab SSFSE T2w sequences. DW-MRI of the liver was performed using an axial spin-echo echo-planar sequence with multiple b values (150, 500, 1000, 1500 s/mm2) in all diffusion directions. Contrast-enhanced MRCP was performed in 25/232 patients. All MR images were blindly evaluated by two experienced abdominal radiologists in consensus to determine the presence of biliary complications, whose final diagnosis was based on direct cholangiography, surgery and integrating clinical follow-up with ultrasound and/or MRI findings. RESULTS: In 113 patients no biliary abnormality was observed. The remaining 119 subjects were affected by one or more of the following complications: non-anastomotic strictures including typical ischemic-type biliary lesions (n = 67), anastomotic strictures (n = 34), ampullary dysfunction (n = 4), anastomotic leakage (n = 4), stones, sludge and casts (n = 65), vanishing bile duct (n = 1). The sensitivity, specificity, PPV, NPV and diagnostic accuracy of the reviewers for the detection of all types of biliary complications were 99%, 96%, 95%, 99% and 97%, respectively. CONCLUSION:MR cholangiopancreatography and MR imaging at 3 T device are extremely reliable for detecting biliary complications after liver transplantation.
Authors: Nicola de'Angelis; Fausto Catena; Riccardo Memeo; Federico Coccolini; Aleix Martínez-Pérez; Oreste M Romeo; Belinda De Simone; Salomone Di Saverio; Raffaele Brustia; Rami Rhaiem; Tullio Piardi; Maria Conticchio; Francesco Marchegiani; Nassiba Beghdadi; Fikri M Abu-Zidan; Ruslan Alikhanov; Marc-Antoine Allard; Niccolò Allievi; Giuliana Amaddeo; Luca Ansaloni; Roland Andersson; Enrico Andolfi; Mohammad Azfar; Miklosh Bala; Amine Benkabbou; Offir Ben-Ishay; Giorgio Bianchi; Walter L Biffl; Francesco Brunetti; Maria Clotilde Carra; Daniel Casanova; Valerio Celentano; Marco Ceresoli; Osvaldo Chiara; Stefania Cimbanassi; Roberto Bini; Raul Coimbra; Gian Luigi de'Angelis; Francesco Decembrino; Andrea De Palma; Philip R de Reuver; Carlos Domingo; Christian Cotsoglou; Alessandro Ferrero; Gustavo P Fraga; Federica Gaiani; Federico Gheza; Angela Gurrado; Ewen Harrison; Angel Henriquez; Stefan Hofmeyr; Roberta Iadarola; Jeffry L Kashuk; Reza Kianmanesh; Andrew W Kirkpatrick; Yoram Kluger; Filippo Landi; Serena Langella; Real Lapointe; Bertrand Le Roy; Alain Luciani; Fernando Machado; Umberto Maggi; Ronald V Maier; Alain Chichom Mefire; Kazuhiro Hiramatsu; Carlos Ordoñez; Franca Patrizi; Manuel Planells; Andrew B Peitzman; Juan Pekolj; Fabiano Perdigao; Bruno M Pereira; Patrick Pessaux; Michele Pisano; Juan Carlos Puyana; Sandro Rizoli; Luca Portigliotti; Raffaele Romito; Boris Sakakushev; Behnam Sanei; Olivier Scatton; Mario Serradilla-Martin; Anne-Sophie Schneck; Mohammed Lamine Sissoko; Iradj Sobhani; Richard P Ten Broek; Mario Testini; Roberto Valinas; Giorgos Veloudis; Giulio Cesare Vitali; Dieter Weber; Luigi Zorcolo; Felice Giuliante; Paschalis Gavriilidis; David Fuks; Daniele Sommacale Journal: World J Emerg Surg Date: 2021-06-10 Impact factor: 5.469