METHODS: A total of 91 elective patients with cholelithiasis and CBD stones diagnosed at magnetic resonance cholangiography (MRC) were included in a prospective, randomized trial.

• 方法：总共有91名经磁共振胆管造影术中检查有胆结石及胆总管结石的患者纳入一项前瞻性随机试验。