Radiology:高性能自动血块检测在急性脑卒中患者中的应用

2021-05-04 shaosai MedSci原创

脑血管CT血管造影(CTA)是对疑似急性缺血性卒中患者最常用的识别大血管狭窄闭塞的方法。

血管CT血管造影(CTA)是对疑似急性缺血性卒中患者最常用的识别大血管狭窄闭塞的方法。大血管阻塞(LVO)的识别对急性缺血性卒中患者的早期治疗至关重要,也是进行血管内治疗的先决条件。然而,一次CTA检查可能产生超过1000张高分辨率图像以供复查,这对临床成像工作流程构成挑战,同时可能会延误对责任阻塞大血管的快速识别和治疗。

然而这些挑战可以通过描绘LVO的自动化技术来缓解。最近的研究报道了一种原型检测方法,该方法在早期检测前循环LVO时具有很高的敏感性,近日,发表在Radiology杂志的一项研究测试了这一概念的进一步迭代技术,该技术设想为一种影像学计算机辅助分类和通知软件,通过自动检测血块和紧急通知来协助放射科医生进行准确诊断和临床卒中工作流程的顺利进展。该研究通过采用前瞻性急性取栓术和脑血管成像试验的CT血管造影和相关研究数据评估了其敏感性、特异性和整体性能,为临床提供了一个快速、准确且可操作性强的LVO自动检测系统。

本项研究回顾性分析了最近的脑血管试验(CRISP [ClinicalTrials.govNCT01622517]和DASH)的CTA数据,由来自全球11个站点的本地知识库进行了丰富以平衡LVO阳性和LVO阴性检查的人口统计学和技术变量数据。由来自不同机构的两名神经放射学专家对颈内动脉(ICA)颅内段或大脑中动脉(MCA)M1段LVO的CTA结果进行了独立审查。开发了自动分析平台,并进行了测试以预测LVO的存在和相对于读阅者共识的位置。阅读者之间关于LVO存在或位置的不一致性由第三机构的阅读者裁定。敏感性,特异性和受体的操作特征由独立的统计学家评估,并进行亚组分析。在不到3.5分钟通知的平均时间,将预先设定的性能阈值设置为灵敏度和特异性的95%CI的下限(0.8或更高)。

本研究共纳入217名研究参与者(平均年龄64岁±16岁[标准差];116人;109例LVO阳性患者)。超出了预先设定的性能阈值(敏感性,105 / 109 [96%;95%置信区间:91,99];特异性:106 / 108 [98%;95%置信区间:94,100])。对年龄、性别、位置和供应商亚群的敏感性和特异性估计超过90%。受者工作特征曲线下面积为99% (95% CI: 97,100)。平均处理和通知时间为3分18秒。

表1 大血管阻塞检测性能:与参考的多阅读者分类的比较。

 

表2 大血管阻塞检测的性能:扫描仪制造商的比较。

本研究结果证实了快速自动化高效检测颈内动脉颅内段和大脑中动脉M1段阻塞的可行性,并在各个亚组和CT供应商间表现出出色的检测性能,这为临床缺血性卒中治疗和未来的卒中试验提供了新的方向和进展。

原文出处:

Seena Dehkharghani,Maarten Lansberg,Chitra Venkatsubramanian,et al.High-Performance Automated Anterior Circulation CT Angiographic Clot Detection in Acute Stroke: A Multireader Comparison.DOI:10.1148/radiol.2021202734

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    2021-05-05 liujiadong

    早日为患者带来**

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1720382, encodeId=6ebe1e2038254, content=<a href='/topic/show?id=915c3604e6b' target=_blank style='color:#2F92EE;'>#卒中患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36047, encryptionId=915c3604e6b, topicName=卒中患者)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=940232842333, createdName=wangyang7969, createdTime=Mon Oct 18 12:02:19 CST 2021, time=2021-10-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1679163, encodeId=438616e9163fa, content=<a href='/topic/show?id=7a2684e600b' target=_blank style='color:#2F92EE;'>#脑卒中患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84760, encryptionId=7a2684e600b, topicName=脑卒中患者)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=091e27733095, createdName=weihongyv, createdTime=Sun Sep 05 08:02:19 CST 2021, time=2021-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1366969, encodeId=387c13669691e, content=<a href='/topic/show?id=d0e0524218b' target=_blank style='color:#2F92EE;'>#急性脑卒中#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52421, encryptionId=d0e0524218b, topicName=急性脑卒中)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=856b247, createdName=songbq, createdTime=Thu May 06 10:02:19 CST 2021, time=2021-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=962739, encodeId=9e91962e39bb, content=早日为患者带来**, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=10784730946, createdName=liujiadong, createdTime=Wed May 05 07:11:12 CST 2021, time=2021-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1026839, encodeId=918c1026839e6, content=卒中虽然是临床上常见病,溶栓,取栓等血管内治疗也很成熟,但是仍然有很多未知问题有待认知!, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=健健, createdTime=Tue May 04 22:02:19 CST 2021, time=2021-05-04, status=1, ipAttribution=)]
    2021-05-04 健健

    卒中虽然是临床上常见病,溶栓,取栓等血管内治疗也很成熟,但是仍然有很多未知问题有待认知!

    0

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