中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (43): 8144-8151.doi: 10.3969/j.issn.2095-4344.2012.43.033

• 生物材料学术探讨 biomaterial academic discussion • 上一篇    下一篇

口腔金属材料与影像学伪影的检测与比较

于 华，张晓东，王亦菁，魏 静，刘佼佼   

  1. 解放军沈阳军区总医院口腔内科，辽宁省沈阳市 110000
  • 收稿日期:2012-07-04 修回日期:2012-09-10 出版日期:2012-10-21 发布日期:2013-04-08
  • 通讯作者: 张晓东，博士，副主任医师，硕士生导师，解放军沈阳军区总医院口腔内科，辽宁省沈阳市 110000 zxd99233@163.com
  • 作者简介:于华★，女，1968年生，黑龙江省齐齐哈尔市人，汉族，2001年中国医科大学毕业，硕士，主治医师，主要从事口腔临床方面的研究。 sac_112@sina.com

Dental metallic materials and imaging artifacts: Detection and comparison

Yu Hua, Zhang Xiao-dong, Wang Yi-jing, Wei Jing, Liu Jiao-jiao   

  1. Department of Oral Medicine, General Hospital of Shenyang Military Region, Shenyang 110000, Liaoning Province, China
  • Received:2012-07-04 Revised:2012-09-10 Online:2012-10-21 Published:2013-04-08
  • Contact: Zhang Xiao-dong, Doctor, Associate chief physician, Master’s supervisor, Department of Oral Medicine, General Hospital of Shenyang Military Region, Shenyang 110000, Liaoning Province, China zxd99233@163.com
  • About author:Yu Hua★, Master, Attending physician, Department of Oral Medicine, General Hospital of Shenyang Military Region, Shenyang 110000, Liaoning Province, China sac_112@sina.com

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669

被引次数

12

摘要：

背景：磁共振成像是常用的临床影像检测方法，口腔金属材料在磁共振成像检查时会出现图像伪影，从而影响图像的质量以及诊断的正确性。
目的：分析不同口腔金属材料在磁共振成像中产生的伪影强度以及影响伪影的因素。
方法：分析9篇近10年关于口腔金属材料对磁共振成像影响的研究文献，从不同角度分析口腔常用金属材料钴铬合金、镍铬合金、钛合金、金铂合金、银铂合金以及纯钛等在磁共振影像中产生的伪影的大小，比较其影响伪影强度的因素。
结果与结论：钴铬合金在磁共振图像中产生的伪影最大，并且随着磁场强度的增强伪影增大，其中硬质钴铬合金产生的伪影强度大于软质钴铬合金产生的伪影强度，其次是镍铬合金产生的伪影，而金、银合金以及纯钛产生的伪影最小，并且磁场强度增强等外加干扰因素对伪影大小无明显影响。

关键词: 口腔, 金属材料, 磁共振, 伪影, 镍铬合金, 钴铬合金, 钛合金, 纯钛, 金合金, 自旋回波序列, 梯度回波序列

Abstract:

BACKGROUND: Magnetic resonance imaging is commonly used in clinical imaging detection. The dental metallic materials may produce the imaging artifacts during magnetic resonance imaging detection which may influence the quality of the image and the accuracy of the diagnosis.
OBJECTIVE: To analyze the intensity of the artifacts produced by different dental metallic materials in magnetic resonance imaging as well as the influential factors to the artifacts.
METHODS: A total of nine articles related to the effect of different dental metallic materials on magnetic resonance imaging in the past 10 years were analyzed. The size of the artifacts produced by the commonly used dental metallic materials was analyzed from different aspects, such as the cobalt-chromium alloy, nickel-chromium alloy, titanium alloy, gold-platinum alloy, silver platinum alloys and pure titanium. The factors that affect the intensity of the artifacts were compared.
RESULTS AND CONCLUSION: Cobalt-chromium alloy can produce the biggest artifact in the magnetic resonance imaging, and the artifact is increased with the enhancement of strength of the magnetic field. The artifact strength produced by the hard cobalt-chromium alloy is bigger than that produced by the soft cobalt-chromium alloy; the artifact strength produced by nickel-chromium alloy is bigger, and the smallest artifact strength is produced by gold-platinum alloy, silver platinum alloys and pure titanium. The interference factor of magnetic field intensity has no significant effect on the artifact size.

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