MacDonald F R, Cooperberg P L, Cohen M M
Gastrointest Radiol. 1981 Jan 15;6(1):39-41. doi: 10.1007/BF01890219.
The "WES" triad -- that is, the demonstration of the gallbladder Wall, the Echo of the stone, and the acoustic Shadow -- permits the specific diagnosis of stones in a contracted gallbladder. This triad positively identifies the gallbladder and helps to differentiate the contracted gallbladder with stones from a loop of bowel containing gas.
“WES”三联征——即胆囊壁、结石回声及声影的显示——可对萎缩性胆囊内的结石作出特异性诊断。此三联征能明确识别胆囊，并有助于将有结石的萎缩性胆囊与含气肠袢区分开来。
