68 only performed x-rays on 934 74% of 1265 cases and detected foreign bodies in only of 43% of those x-rayed. 100% of the metallic objects were detected, 86% of the glass objects were detected, but only 26% of the fish bones were detected.
En cambio Cheng W y colaboradores 68, de 1.265 casos solo 934 fueron a rayos X 74% y la tasa de detección de cuerpo extraño fue del 43% e identificaron el 100% de los objetos metálicos, 86% de los objetos de vidrio y 26% de las espinas de pescado.