衔铁可卸式磁性附着体的研制及对MRI影响的对比研究  

Development of titanium-posted keeper-removable magnetic attachment and its effect on magnetic resonance imaging

作　　者：林丽红[1] 赵铱民[1] 白石柱[1] 邓再喜[1] 刘满生[2] 赵海涛[2] 

机构地区：[1]西安第四军医大学口腔医学院,710032 [2]第四军医大学西京医院放射科

出　　处：《实用口腔医学杂志》2002年第3期204-206,共3页Journal of Practical Stomatology

基　　金：第四军医大学创新项目 (CX0 1A0 0 1 );军队科研项目(0 1MA1 96)资助课题

摘　　要：目的 :解决磁性附着体应用对MRI的影响。方法 :开发衔铁可卸式磁性附着体 ,比较几种形式衔铁对MRI的影响程度及不同MRI扫描方式对钛片所造成的伪影大小。结果 :①几种形式衔铁对MRI的影响由大到小依次为 :预成钉帽状衔铁、钴铬合金铸接的衔铁、贵金属合金铸接的衔铁、钛桩可卸式衔铁、钛桩 (拆卸盘状衔铁及中心螺丝后 )。②可卸式衔铁拆下盘状衔铁及中心螺丝后 ,钛桩对MRI影像几乎没有影响。③标准SE序列拍摄钛片时所造成伪影最小。结论 :衔铁可卸式磁性附着体解决了对MRI的伪影问题 。Objective: To develop titanium posted keeper removable magnetic attachment and to decrease its influence on magnetic resonance imaging(MRI). Methods: Pre fabricated soft magnetic alloy pin cap keeper(PSAPK), casting non precious alloycoping keeper(CNPAK), casting precious alloy coping keeper(CPACK), titanium post keeper(TPK) and titanium post(TP) were prepared and applied on the maxilla of a volunteer, MRI was taken and measured. Results: ①The attachments producing artifacts in MRI from the biggest to the smallest were listed in following rank: PSAPK, CNPAK, CPACK, TPK and TP. ②After removing the keeper from titanium post keeper, the post had no artifact on MRI. ③The artifact was the smallest taken with SE sequence. Conclusion: Titanium post keeper is an effective way to solve the artifact problem and will bring benefits to the patients who need MRI examination of head.

关 键 词：衔铁可卸式磁性附着体 研制 对比研究 磁性附着体 核磁共振成像 头颅肿瘤 颜面部肿瘤 

分 类 号：R783.9[医药卫生—口腔医学]