AAOS 2013:特发性脊柱侧凸患者术中辐射暴露情况研究

2014-03-21 佚名 丁香园

脊柱外科术中导航结合锥形束CT引导技术是为了提高置钉的准确性并减少术中透视的依赖性。然而,CT应用的增多使患者不得不接受高于有效剂量的辐射,可能存在长期的健康隐患,尤其是对儿童患者更是如此。本研究拟对接受胸腰段内固定手术的特发性脊柱侧凸患者进行研究,评估其接受的辐射的有效剂量,并对比锥形CT导航系统和术中透视两种方法在有效剂量等方面的差别。 方法:在2012-4-1至

脊柱外科术中导航结合锥形束CT引导技术是为了提高置钉的准确性并减少术中透视的依赖性。然而,CT应用的增多使患者不得不接受高于有效剂量的辐射,可能存在长期的健康隐患,尤其是对儿童患者更是如此。本研究拟对接受胸腰段内固定手术的特发性脊柱侧凸患者进行研究,评估其接受的辐射的有效剂量,并对比锥形CT导航系统和术中透视两种方法在有效剂量等方面的差别。

方法:在2012-4-1至2012-12-31间,对同一机构内连续44例因特发性脊柱侧凸接受胸腰段后路脊柱融合内固定术的患者进行研究,对其术中成像次数及接受辐射的情况进行评估,根据辐射情况根据标准算法计算有效剂量(Effective dose,ED)。将总的有效剂量与文献报道的术中O臂导航相关的有效剂量进行对比。

结果:44例患者的平均术中ED为0.17mSv(+/- 0.14 mSv),低于近期报道的术中CT的剂量。平均辐射暴露时间为26秒(+/- 18 sec),平均融合节段为11个(+/- 1),共应用597枚椎弓根螺钉,其中428枚应用于胸椎,无螺钉相关并发症(神经、血管损伤),无螺钉误置或需再次调整,所有患者均完成随访。以往报道的0型臂术中导航的体型较小患者接受的平均ED为12.96mSv(5-8个融合节段)、19.44mSv(9-10个融合节段)。

讨论和结论:相比于术中透视,锥形CT导航使患者暴露于更高的有效剂量(12.96 mSv:0.17 mSv/11个融合节段)。辐射量随患者体型和融合节段的增多而增加,当患儿存在与辐射相关的健康隐患时,应限制锥形CT的使用,除非同时存在解剖变异,使透视下置钉存在困难和风险。

原始出处:

Courtney M. O'Donnell, Viviana Bompadre, Walter F. Krengel III,Radiation Exposure During Posterior Instrumented Fusion for Idiopathic Scoliosis.AAOS Mar 13, 2014

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    2014-05-24 yinhl1978
  6. [GetPortalCommentsPageByObjectIdResponse(id=1894546, encodeId=76aa189454673, content=<a href='/topic/show?id=e45b6e859f3' target=_blank style='color:#2F92EE;'>#特发性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67859, encryptionId=e45b6e859f3, topicName=特发性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=74808, createdName=xinxin088, createdTime=Sat Nov 15 16:25:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1776584, encodeId=21ba1e765843e, content=<a href='/topic/show?id=cd5884511ca' target=_blank style='color:#2F92EE;'>#脊柱侧凸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84511, encryptionId=cd5884511ca, topicName=脊柱侧凸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=778d36, createdName=柳叶一刀, createdTime=Tue Sep 02 11:25:00 CST 2014, time=2014-09-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1642880, encodeId=cde41642880a1, content=<a href='/topic/show?id=1e19168181' target=_blank style='color:#2F92EE;'>#AAOS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1681, encryptionId=1e19168181, topicName=AAOS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c11e23034343, createdName=ms1260584454294838, createdTime=Wed Apr 09 08:25:00 CST 2014, time=2014-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2055287, encodeId=001f205528e5c, content=<a href='/topic/show?id=7b0993e442c' target=_blank style='color:#2F92EE;'>#辐射暴露#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93744, encryptionId=7b0993e442c, topicName=辐射暴露)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5V6pBDhhleaA9ZQaNgImyx09qqFom6WIvSGdUoWfKiaWCiaeUfnXMRECAMPA81Wkd4EOicrPibOTudQ/132, createdBy=b9382500209, createdName=ms6127405442416114, createdTime=Mon Dec 29 19:25:00 CST 2014, time=2014-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2071201, encodeId=1c8520e120148, content=<a href='/topic/show?id=ab241680a3' target=_blank style='color:#2F92EE;'>#AAO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1680, encryptionId=ab241680a3, topicName=AAO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Sat May 24 23:25:00 CST 2014, time=2014-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1349296, encodeId=5b5e1349296f9, content=<a href='/topic/show?id=838593e35b2' target=_blank style='color:#2F92EE;'>#辐射#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93735, encryptionId=838593e35b2, topicName=辐射)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8e4c53, createdName=jiyangfei, createdTime=Sun Mar 23 07:25:00 CST 2014, time=2014-03-23, status=1, ipAttribution=)]
    2014-03-23 jiyangfei

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