Lewandowski B J, Winsberg F
AJR Am J Roentgenol. 1981 Sep;137(3):519-21. doi: 10.2214/ajr.137.3.519.
Eight patients with sonographically demonstrated ascites adjacent to or surrounding a gallbladder wall of normal thickness are described. In two patients, improper transducer placement or angulation caused apparent gallbladder wall thickening. Two in vitro experiments, one with a balloon phantom and the other with a resected gallbladder, confirmed that wall thickness varies with transducer placement and angulation. Ascites per se neither causes gallbladder wall thickening nor results in artifactual thickening if the beam angle is controlled.
本文描述了8例超声检查显示腹水紧邻或环绕胆囊壁且胆囊壁厚度正常的患者。其中2例患者，因探头放置不当或角度问题导致胆囊壁看似增厚。两项体外实验，一项使用球囊模型，另一项使用切除的胆囊，证实了胆囊壁厚度会随探头放置和角度而变化。如果控制波束角度，腹水本身既不会导致胆囊壁增厚，也不会造成假性增厚。
