腹部实质性脏器的正常与异常影像学表现

AbdominalCT腹部实质性脏器的正常与异常影像学表现

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1234CT增强的各期如何分辨PleasearrangetheimagesA-Dintheorderofnonenhanced,arterial,portalanddelayphaseABCDA,B,C,DB,C,A,DD,B,C,AC,B,D,A图像是上下连续的。。。Hepaticlobesandsegmentsleftlateralsuperior/inferiormedialcaudalleftrightcaudalrightanteriorsuperior/inferiorposteriorsuperior/inferior

*肝裂：fissures左叶间裂肝主裂BileductsystemBileduct：intrahepaticduct肝内胆管Hepaticduct左右肝管Commonbileduct胆总管Gallbladder胆囊及胆囊管Howmanydifferentimagingtoolsforcholangiography?MRCP(MagneticResonanceCholangio-Pancreatography)CTCP(ComputedTomographyCholangio-Pancreatography)ERCP(EndoscopicRetrogradeCholangio-Pancreatography)PTC(PercutaneousTranshepaticCholangiography)左侧肝内胆管肝总管胆总管十二指肠后段胆总管胰内段胆管系统的变异PancreasFatinfiltrationPancreaticductPancreas胰头、胰颈、胰体、胰尾、胰腺钩突MSCTCholangiopancreaticographySpleen脾高;肋单位;分叶;副脾accessoryspleen；脾脏的强化:arterialphase脾动脉肠系膜上动脉肠系膜下动脉胃十二指肠动脉胃左动脉肝总动脉脾静脉肠系膜上静脉门静脉肠系膜下静脉AbnormalitiesLiver

肝脏的异常影像学表现肝叶大小改变增大：代偿缩小：损伤肝脏轮廓外凸：mass内凹：牵拉SizeandRatioNoted：肝裂的变化Contour肝脏的异常影像学表现肝脏密度弥漫与局灶低密度高密度等密度肝脏强化高强化低强化延迟强化特殊强化DensityNoted：异常密度的边界平扫：低密度；增强：高强化平扫：低密度；增强：无强化容积效应特殊强化特征靶征，病理结构基础？填充式强化，快进慢出TrueFalseB请判断：图A、B中的病灶最外缘具有相同的强化特点？A差别在哪里？Bileductsystem胆道系统的异常影像学表现胆道梗阻与扩张充盈缺损与腔内异常密度胆道系统管壁异常ObstructionDifferentlevelsIntrahepaticductHepaticductCommonhepaticductCommonbileductVater’sampulla无梗阻的胆道扩张充盈缺损Fillingdefect胆道腔内异常密度胆道壁异常密度、异常强化?5monthslater…PancreasSizeShapeandborderDensityEnhancementPancreaticductSize,shapeandtheborderDensityEnhancement囊性病变：无强化实性病变：低/高强化；不均匀强化PancreaticductThedensityofthepancreaisabnormalTrueFalseThepancreaticductisdilatedTrueFalse脾脏大小及数目异常sizeandnumber密度异常density强化异常enhancement：血管及淋巴系统大小及数目异常密度异常强化异常Whichspleenisabno