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JAMA Surg:3D打印导航模板定位肺小结节的准确性

2019-01-05 xiangting MedSci原创

使用3D打印导航模板定位周围肺小结节的有效性和安全性并不差于CT引导法,并显著简化了定位手术和减少了患者的辐射暴露。

由于视频辅助胸腔镜手术中结节识别的困难性,肺小结节的定位存在挑战。使用三维(3-D)打印技术,研究人员最近创建了一个导航模板用于辅助经皮肺结节的定位;然而,该模板的有效性和安全性尚未得到评估。

这项研究旨在评估3D打印导航模板用于指导周围肺小结节定位有效性和安全性的非劣效性。

这是一项非劣效性随机临床试验,于2016年10月至2017年10月在中国上海肺科医院进行,比较了模板引导方法vs常规计算机断层扫描(CT)引导方法对肺结节定位的安全性和精确性。共招募了213名患有周围肺小结节(<2cm)的手术候选者进行CT或模板引导的肺结节定位。进行了意向治疗分析。干预内容为经皮肺结节定位。

主要结局是肺结节定位的准确性(定位偏差),次要结局是手术持续时间、放射剂量和并发症发生率。

200例患者按1:1比例随机分为模板引导组和CT引导组,大多数为女性(147 vs 53),体重指数范围为15.4-37.3,平均(SD)结节大小为9.7(2.9)mm,目标结节外缘与胸膜之间的平均距离为7.8(范围,0.0-43.9)mm。共有190例患者接受了CT或模板引导的肺结节定位及随后的手术。这些患者中,模板引导组和CT引导组的定位偏差没有显著差异(平均值[SD],8.7[6.9] vs 9.6[5.8] mm; P= .36)。模板引导组的平均(SD)手术持续时间为7.4(3.2)分钟,CT引导组为9.5(3.6)分钟(P<.001)。模板引导组的平均(SD)辐射剂量为229(65)mGy×cm,CT引导组为313(84)mGy×cm(P<.001)。

使用3D打印导航模板定位周围肺小结节的有效性和安全性并不差于CT引导法,并显著简化了定位手术和减少了患者的辐射暴露。

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    2019-01-25 gjsgj
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    2019-01-05 医者仁心5538

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