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口腔镍铬合金固定修复体与磁共振成像伪影的探讨 被引量:1

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摘要 目的探讨口腔金属固定修复体导致MRI伪影的影响因素。方法以镍铬合金制作不同体积的冠样修复体,按体积大小,由小到大分为A-F,共6组,分别戴入志愿者口腔内,使用磁场强度为0.15Tesla的永磁型磁共振成像仪对各修复体进行轴位和矢状位扫描。对各修复体的MRI伪影的最大径进行测量和分析。结果金属修复体体积增大时,轴位和矢状位的MRI影像上的伪影面积相应增大,产生伪影的层面增多,主要累及面部中、下份后侧的组织结构。结论口腔金属修复体影响MRI影像,应设法避免其对MRI图像形成和判断的干扰。
出处 《影像诊断与介入放射学》 2008年第5期203-205,共3页 Diagnostic Imaging & Interventional Radiology
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参考文献5

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