Magnetic resonance cholangiopancreatography

摘要: Publisher Summary Magnetic resonance cholangiopancreatography (MRCP) plays an important role in the diagnosis of abnormalities pancreatic and biliary tract. This chapter discusses basic principles, techniques, pitfalls encountered performing reading MRCP. MRCP is a relatively recent advance pancreaticobiliary tract imaging, now it also used oncologic imaging. supplants endoscopic retrograde (ERCP) percutaneous transhepatic cholangiography (PTC) initial diagnostic evaluation follow-up diseases pancreas, gallbladder, largely due to its noninvasive nature. does not utilize ionizing X-ray radiation like ERCP or PTC require same degree operator skill patient preparation. It has become technique choice patients with factors contributing high failure rate for ERCP. especially excellent at depicting ductal anatomy beyond obstructing lesion, which impossible demonstrate by takes advantage inherent T2-weighted contrast that exists between intra-abdominal slow-flow fluid-containing structures background organs soft tissues. Current techniques usually include use ultrafast breath-hold pulse sequences such as single-shot fast spin-echo half-Fourier acquisition short TE. When combined intravenous gadolinium-chelate agents, serves comprehensive modality detection malignancy. very helpful guidance prior tissue sampling via ERCP, ultrasonography (EUS), CT ultrasound-guided biopsy.