胆系疾病的CT诊疗一胆道的CT检查方法2扫描方法口服胆囊造影CT扫描：于口服碘番酸0.5g后15h行CT扫描。胆囊收缩功能正常者，可见胆囊内充盈造影剂。对显示阴性结石及胆囊息肉等有很好的增强效果。胆道结石临床表现CT表现胆固醇结石胆色素结石混合性结石胆管结石：胆总管结石有以下CT表现CT表现CT未见明确结石影，拟为胆囊分隔或折叠畸形、胆囊炎MRI示胆囊扭曲变形，其内见充满小结石影；MRCP薄层尚显示胆总管下段两枚小结石影CT未见阳性结石影，仅见胆囊体积增大MRI清晰显示胆囊内充盈缺损，见七枚小结石影CT示胆囊炎，未见结石影；MRI示胆囊底部多发小结石并胆总管中、下段结石CT示胆囊单发结石；MRI显示胆囊内多发大小不等、信号不一的结石影CT示胆总管扩张、胆管炎；MRI见胆总管内多发充盈缺损结石影胆道炎症性疾病总述病理临床表现CT表现胆囊结石并胆囊炎急性胆囊炎并胆囊周围脓肿急性胆囊炎并胆囊周围脓肿出血性胆囊炎气肿性胆囊炎慢性胆囊炎病理临床表现。CT表现慢性胆囊炎慢性胆囊炎慢性胆囊炎慢性胆囊炎并胆囊壁钙化胆道恶性肿瘤病理表现临床表现CT表现其他表现胆囊癌，胆囊腔内型胆囊癌，胆囊壁增厚型胆囊癌，胆囊壁浸润型胆囊癌，胆囊腔内型胆囊癌，肿块型胆囊癌，肿块型，侵犯肝脏胆管癌先天性胆管囊肿Ⅲ型：小囊时，CT诊断有一定困难。大囊时表现为突入十二指肠肠腔内或壁内的囊肿，其余胆道部分无异常征象。Ⅳ型：表现为肝内胆管及肝外胆管的囊状扩张或肝外胆管的多发囊状扩张。V型：肝内多发大小不等囊状低密度病变，并与扩张的胆管相通。静脉注射胆影葡胺以后，可见扩张的胆管及囊肿内有造影剂充盈，与多发性肝囊肿之不同。梗阻性黄疸的cT诊断1肝门区胆道梗阻2肝总管梗阻3胆总管梗阻4壶腹部梗阻问题:--+++++++++++++++---+-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++