作者应用放射性标记的组织凝血酶原激活物（t-PA）单克隆抗体调查AAA局部是否存在体内纤溶活性的增加。研究对象是6名经超声、CT和／或DSA确诊的有附壁血栓形成的AAA病人，另选6名因下肢动脉硬化而进行血管手术的病人作为对照组。在两组病人术前1天均由肘静脉注射1mg经放射性铟-111标记的t-PA单克隆抗体，在手术讲行前（注射约18 ／小时后 The authors investigated whether there is an increase in fibrinolytic activity in vivo at the AAA site using radiolabeled tissue prothrombin activator (t-PA) monoclonal antibody. Six patients with mural thromboembolism diagnosed by ultrasound, CT, and / or DSA were enrolled. Six other patients undergoing arterial vascular surgery due to lower extremity arteriosclerosis served as controls. In the two groups of patients 1 day before surgery by the elbow vein injection of 1mg of radioactive indium-111 labeled t-PA monoclonal antibody before the surgery (about 18 / hour after injection