2020/7/7,1,胆道及胰腺超声诊断,2020/7/7,2,一、正常解剖,胆囊(gallbladder),形态:多数呈梨形(pear-shaped),分部:底(fundus)、体(body)、 颈(neck),胆汁:无回声区(anechoic area),第六章胆道及胰腺,2020/7/7,3,一、正常解剖,胆囊(gallbladder),空腹状态(fasting state),大小:长径前后径,囊壁:纤细光滑,2mm,第六章胆道及胰腺,2020/7/7,4,三、异常图象,胆囊结石(gallstone),典型声像图,囊内有一或多枚强回声团(bright echo),后方声影(acoustic shadow),强光团随体位改变而移动(gravity transfer sign),第六章胆道及胰腺,2020/7/7,5,三、异常图象,胆囊结石(gallstone),不典型声像图,胆囊结石呈弧形光带,后方声影及后壁不清,胆囊腔变小甚至闭合,即WES征(Wwall Eecho Sshadow),第六章胆道及胰腺,2020/7/7,6,三、异常图象,胆囊结石(gallstone)