宝石能谱CT在减少金属伪影方面的应用进展  

Application of gemstones spectral CT in reducing metal artifacts

作　　者：李昊翔[1] 朱凯[1] 孙重阳[1] 肖喜刚[1] 

机构地区：[1]哈尔滨医科大学附属第一临床医院CT室,黑龙江哈尔滨150001

出　　处：《中国医药导报》2015年第11期42-45,共4页China Medical Herald

摘　　要：随着金属植入术在临床的广泛应用,金属植入物所产生的伪影会严重降低CT图像的质量。宝石能谱CT已被应用为减少金属伪影的一种手段。对体内含有金属植入物的患者行宝石CT能谱扫描（GSI）,使用能谱分析软件（GSI Viewer）对扫描获得的图像进行分析,40-140 keV重建不同的单能量图像,观察并找出伪影最小、金属物最清晰的图像,利用金属伪影消除技术（MARs）即可获得质量较好的图像,其金属伪影明显减少。宝石能谱CT将硬件与软件充分的结合,能够有效地减除金属植入物伪影给图像带来的影响,对临床诊断有所帮助。With metal implants being widly used clinically, the artifacts from metal implants can seriously degrade the quality of CT images. Gemstones Spectral CT has been proposed as a way of reducing metal artifacts. Patients with metal implants are scaned with GSI（Gemstone spectral imaging） examination, required images being analysed with GSI viewer, different monochromatic images are reconstructed between 40-140 keV to obtain the best image. The reduction of metal artifacts is evidently while using metal artifacts reduction system（MARs）. Gemstones Spectra CT combined with hardware and software, can eliminate the influence of metal artifacts for images to help clinical diagnosis.

关 键 词：宝石能谱CT 金属伪影 去伪影技术 

分 类 号：R814[医药卫生—影像医学与核医学]