Objective To improve the diagnosis and treatment of the ureteral radiolucent calculi.

目的提高输尿管阴性结石的诊治水平。

Objective: To study the diagnostic value of the different imaging way for the ureteral radiolucent calculi.

目的：探讨输尿管阴性结石的合理、有效诊断方法。

Objective: to improve X ray diagnostic accuracy of radiolucent foreign body in respiratory tract in children.

目的：旨在提高小儿气道透x线异物的X线诊断水平。

Results CT revealed a fat compatible radiolucent mass continuous with the orbital fat in the superior temporal quadrant of the orbit.

结果CT示眼球颞上象限结膜下与眶内脂肪相连续的与脂肪密度一致的低密度肿块。

Results In 48 cases, 30 with nonradiolucent calculus, 16 with radiolucent calculus and 2 with blood coagulum were detected as the causes of acute or subacute complete urethral obstruction.

结果30例为阳性结石，16例为阴性结石，2例为血凝块引起的输尿管的急性或亚急性完全梗阻；