常用的胆道直接造影方法（简称旧法）系将Ｔ管腹外部分常规消毒后抽出其中胆汁和气体，在透视下缓慢推注造影剂造影［１］，其造影前仅靠原引流管回抽排气，排气不易彻底，且常人为地随造影剂向胆树注入气泡，Ｘ线片上气泡易与残石负影混淆而致误诊［１．２］。笔者针对旧... The commonly used biliary direct contrast method (referred to as the old method) Department of T tube abdominal part of the routine disinfection of which after the bile and gas extraction, in the perspective of bolus injection of contrast agent contrast [1], its only by the original drainage drainage tube drainage Gas, exhaust is not easy to complete, and often artificial with the contrast agent into the bile tree bubbles, X-ray bubble easily confused with the shadow of the residual stone misdiagnosis [1.2]. I aimed at the old ...