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Methods of investigations • US (Trans abdominal / Endoscopic US )• CT / CT - IVC {sodium ipodate , iotroxate } 30min
supine &prone• MRI , MRCP , functional MR cholangiography 30-60
min( hepato excreted contrast Gd-EOB –DTPA , Primovist or Gd-BOPTA
• ERCP • PTC ( Percutaneous transhepatic cholangiography )
22G chiba needle • Intra operative ( IOC ) • T-tube day 7 post op • Hepato Scintigraphy HIDA ( TC 99 m 2-4 hs )