Tervonen O, Myllylä V, Päivänsalo M
Rontgenblatter. 1986 Aug;39(8):220-1.
Previous studies have overestimated the accuracy of ultrasonography for the diagnosis of gallstones by neglecting the systematic checking of false negative findings. In the present series only 80% of 331 cases of gallstones seen at autopsy had been detected by ultrasonography. The most frequent reason for a false negative finding was the small size of the gallstones.
以往的研究由于忽视对假阴性结果进行系统检查，高估了超声检查诊断胆结石的准确性。在本系列研究中，尸检发现的331例胆结石病例中，超声检查仅检测出80%。假阴性结果最常见的原因是胆结石体积小。
