Section2ImagingofLiver,BiliarySystemPancreasandSpleen(Page188)
Section 2 Imaging of Liver, Biliary System, Pancreas and Spleen （Page 188）
Teaching Objectives and ContentsTo master imaging anatomy of the 1st and 2nd hepatic hilus;to master CT imaging features of hepatocellular carcinoma(HCC) and hepatic cavernous hemangioma (HCH)To be familiar with CT features of acute pancreatitis andtrauma of liver or spleenTo know CT and MRI manifestations of biliary system,pancreas and spleen and examination methodologies; to knowMRI manifestations of HCC,HCH, acute pancreatitis, andtraumaofliverorspleen2
Teaching Objectives and Contents ◆ To master imaging anatomy of the 1st and 2nd hepatic hilus; to master CT imaging features of hepatocellular carcinoma (HCC) and hepatic cavernous hemangioma (HCH) ◆ To be familiar with CT features of acute pancreatitis and trauma of liver or spleen ◆ To know CT and MRI manifestations of biliary system, pancreas and spleen and examination methodologies; to know MRI manifestations of HCC, HCH, acute pancreatitis, and trauma of liver or spleen 2
1. Liverthefirstmodality ofchoiceafterUSB(1）Imagingexaminationmodalites（影像检查技术）Ultrasonography:thefirst modality of choice（Nonenhancement（平扫）Contrastenhancement（增强）:multi-phaseCE,CTperfusionNonenhancement:T1WI,T2WI,MRCP,chemicalshiftimagingMRI-ContrastenhancementX-ray plain film**MRcP(magneticresonancecholangiopancreatography，磁共振胆胰管成像）；3chemicalshiftimaging（化学位移成像）
1. Liver (1) Imaging examination modalites（影像检查技术） ⚫ Ultrasonography: the first modality of choice ⚫ CT ⚫ MRI ⚫ X-ray plain film Nonenhancement （平扫） Contrast enhancement （增强）：multi-phase CE, CT perfusion 3 Nonenhancement: T1WI, T2WI, MRCP, chemical shift imaging Contrast enhancement the first modality of choice after USB **MRCP (magnetic resonance cholangiopancreatography, 磁共振胆胰管成像)； chemical shift imaging (化学位移成像)
(a) CT examination methodologiesOmnipaiquenonenhancementenhancementNECE
(a) CT examination methodologies ⚫ nonenhancement ⚫ enhancement NE CE 4 Omnipaique
Triple-phase contrast scan of liver(肝的三期增强扫描）Objectives: to improve detection and diagnosis ofintrahepaticlesionsPrinciples: different properties in blood supply betweenliver and intrahepatic lesionsMetholodies:+ i.v. bolus injection (2ml/s-3ml/s) of CT contrast agent+ scan performed separately at about 25s (arterial phase),60s (portal phase), 120s (equilibrium phase)5
Triple-phase contrast scan of liver (肝的三期增强扫描） ⚫ Objectives: to improve detection and diagnosis of intrahepatic lesions ⚫ Principles: different properties in blood supply between liver and intrahepatic lesions ⚫ Metholodies: † i.v. bolus injection (2ml/s-3ml/s) of CT contrast agent † scan performed separately at about 25s (arterial phase), 60s (portal phase), 120s (equilibrium phase) 5