Biliary MRI w Eovist
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1 Biliary MRI w Eovist Is there any added value? Elmar M. Merkle, MD Director of MR Imaging Duke University Medical Center elmar.merkle@duke.edu
2 Declaration of Conflict of Interest or Relationship Research Support Siemens Advisory Board Bayer, Siemens Speaker s Bureau Bayer
3 RT 3D T2w MR Cholangiography (MRC) 3D datasets with isotropic voxels z 1 mm y x 1 mm 1 mm
4 T2w MR Cholangiography Remaining Problems Choledochoduodenal Junction Functional Information Biliary Dynamics Communication of Fluid Collections
5 MRC Remaining Problems Choledochoduodenal junction
6 MRC Remaining Problems Functionally relevant stenoses?
7 Time resolved MRC o Pharmaceutical stimulation o Biliary excreted contrast agents
8 Uptake Mechanism of HB Contrast Agents Gadoxetate disodium (EOVIST ) Biliary Elimination Biliary canaliculi Hepatocyte 50%
9 Portal venous Cystic Duct Filling 6 min P.I. 14 min P.I.
10 Gallbladder Filling 14 min P.I.
11 Duke Experience September 2008 to September patients w Gd-EOB-DTPA 61 patients (39 women, mean age 53y) Normal renal function Normal liver function tests No history of biliary surgery or intervention Ringe KI et al, Eur J Radiol 2010
12 Duke Experience Biliary Excretion in 20 Minutes Intrahepatic bile ducts Common bile duct Gallbladder Duodenum 61/61 61/61 53/61 40/61 100% 100% 87% 66% Ringe KI et al, Eur J Radiol 2010
13 49 year-old-female, 15 min post Gd-EOB-DTPA Ringe KI et al, Eur J Radiol 2010
14 Duke Experience 8/61 patients had no GB reflux 6/8 patients showed duodenal excretion Ringe KI et al, Eur J Radiol 2010
15 31 year-old-man, 13 min post Gd-EOB-DTPA Ringe KI et al, Eur J Radiol 2010
16 Physiology of the Biliary System 600 ml bile/day 97% water 3% bile acids, phospholipids, cholesterol, bile pigment, and electrolytes
17 Physiology of the Biliary System Fasting state 10 cm H2O ~90% of water can be absorbed from the GB 15 cm H2O 30 cm H2O
18 Various SI of Bile on T1w GRE T1w GRE in phase T1w GRE out of phase postprandial fasting
19 Physiology of the Biliary System Postprandial 10 cm H2O Contraction ~75% of GB volume is excreted Relaxation 15 cm H2O 30 cm H2O
20 Duke Experience 8/61 patients had no GB reflux 6/8 patients showed duodenal excretion 4/6 patients had a full stomach Ringe KI et al, Eur J Radiol 2010
21 31 year-old-man, 13 min post Gd-EOB-DTPA Ringe KI et al, Eur J Radiol 2010
22 Take Home Points Best results are achieved if the patient is NPO for at least 4 hours The majority of patients demonstrate reflux of Gd-EOB-DTPA into gallbladder within 20 min following contrast injection Delayed reflux or absence of gallbladder reflux may indicate gallbladder pathology
23 MRC Normal Anatomy
24 Any help from T1w MRC?
25 Normal Variants Type 1-4: aberrant segmental branch
26 Normal Variants Type 5-6: aberrant cystic duct
27 46 YOF w incomplete divisum Accessory right segmental branch
28 46 YOF w incomplete divisum T2w 3D MRCP T1w 3D MRC
29 18 YOM, S/P lap cholecystectomy Patient develops bile leak Initial post-surgical ERCP shows no abnormality
30 18 YOM, S/P lap cholecystectomy Patient develops bile leak Initial post-surgical ERCP shows no abnormality Initial T2w MRCP read as normal
31 18 YOM, S/P lap cholecystectomy patent stent 15 min P.I. 120 min P.I.
32 18 YOM, S/P lap cholecystectomy
33 Choledochal Cysts Todani classification: five types Pathophysiology: uncertain Anomalous junction between the CBD and pancreatic duct? Frequency in the US range from 1 per 100, ,000 to 1 per 2,000,000 live births.
34 Choledochal Cyst Type 4 IVA: multiple dilatations (intra + extra) IVB: multiple dilatations (extra only)
35 Choledochal Cyst Type 4 IVA: multiple dilatations (intra + extra) IVB: multiple dilatations (extra only)
36 Simple Cyst or Choledochal Cyst
37 Simple Cyst or Choledochal Cyst
38 Simple Cyst or Choledochal Cyst
39 Choledocholithiasis
40 Complications of Cholelithiasis Acute cholecystitis Obstruction, cholangitis, secondary biliary cirrhosis Biliary-enteric fistula Gallstone ileus
41 Complications of Cholelithiasis Acute cholecystitis Obstruction, cholangitis, secondary biliary cirrhosis Biliary-enteric fistula Gallstone ileus
42 Acute Cholecystitis?
43 Acute Cholecystitis
44 Primary Sclerosing Cholangitis Male preference, < 45 yo Associated w IBD (50%!) Complications Cirrhosis Recurrent bacterial cholangitis Cholangiocarcinoma
45 Primary Sclerosing Cholangitis MRCP vs ERCP Sensitivity of MRCP: 88 % Specificity of MRCP: 99 %
46 Primary Sclerosing Cholangitis Stenoses, beaded ducts, irregular ducts
47 MRC Remaining Problems Functionally relevant stenoses? 24 min post Gd-EOB-DTPA
48 MRC in Patients with Biliary Stents 46 yr-old woman with breast and gastric cancer
49 MRC in Patients with Biliary Stents 61 yr-old man with gastric cancer
50 MRC in Patients with Biliary Stents 65 yr-old man with pancreatic cancer
51 MRC in Patients with Biliary Stents
52 S/P OLT, bilio-biliary anastomosis 15 min post Gd-EOB-DTPA
53 Chronic P itis, bilioduodenal anastomosis 20 min post Gd-EOB-DTPA
54 18 YOF, S/P OLT T2W image reveals a fluid collection in ant abdomen post percutaneous biopsy
55 18 YOF, S/P OLT
56 Summary MR Cholangiography Is the primary imaging modality to evaluate the biliary ductal system non-invasively It should be performed if an interventional procedure is unlikely Gd-EOB-DTPA adds a functional flavor to biliary MRI
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