目的评价开放式MR扫描仪结合光学追踪系统行椎间盘造影术操作方法的可行性及安全性。
Objective To evaluate the feasibility and safety of lumbar disc discography carried out in an open MR scanner with an optical tracking system.
目的：对外伤引起的年轻恒前牙冠折露髓行活髓切断术，并于2年以上追踪观察其根管、根尖孔发育情况。
Objective:To treatment the young permanent incisors with exposed pulps in crown by pulpotomy and observe the growth of root canals and apexogenesis following up over 2 years.
结果：在404 166 人的追踪期间， 1081个报告了具有征候的胆结石疾病， 885必需作胆切除术。
RESULTS: During 404 166 person-years of follow-up, 1081 subjects reported symptomatic gallstone disease, of whom 885 required cholecystectomy.
方法追踪分析该院6年内已进行的312侧人工关节置换术患者术前、术中和术后预防感染的评估方法、措施和观察方法。
Methods 312 patients were treated by joint replacement in 6 years, the evaluation of infection and measures to prevention infection during the surgery were studied by a follow-up survey.
方法追踪分析该院6年内已进行的312侧人工关节置换术患者术前、术中和术后预防感染的评估方法、措施和观察方法。
Methods 312 patients were treated by joint replacement in 6 years, the evaluation of infection and measures to prevention infection during the surgery were studied by a follow-up survey.
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