CAJ | 학술논문

检测口腔内4种常用固定修复金属材料在磁共振检查时是否产生伪影及伪影的大小,比较不同检查序列对伪影的影响.发现金铂钯合金全冠有轻度伪影;金银钯合金、纯钛全冠有中度伪影;镍铬合金全冠有重度伪影.得出不同金属材料在MRI同一序列成像时对磁共振成像的影响不同;相同金属材料在不同序列成像中的金属伪影大小无明显差别.口腔金属材料产生的伪影与材料类型密切相关,通过合理选择金属材料可得到最佳MRI成像.
검측구강내4충상용고정수복금속재료재자공진검사시시부산생위영급위영적대소,비교불동검사서렬대위영적영향.발현금박파합금전관유경도위영;금은파합금、순태전관유중도위영;얼락합금전관유중도위영.득출불동금속재료재MRI동일서렬성상시대자공진성상적영향불동;상동금속재료재불동서렬성상중적금속위영대소무명현차별.구강금속재료산생적위영여재료류형밀절상관,통과합리선택금속재료가득도최가MRI성상.
In this paper,to evaluate the existence and extent of MRI artifacts caused by frequently used metallic dental materials and to compare the influence of different MRI sequences on artifacts. The artifact of Au-Pt-Pd alloy crown were the smallest and Au-Ag-Pd alloy crown, pure Titanium crown were smaller. But the artifact of Ni-Gr alloy crown were the largest.With the same scan sequences, the different metal materials can make different effects on MRI images with the different scan sequences, the MRI artifact is not obvious caused by the same metal materials. Artifacts produced by oral metallic materials related closely to the type of the materials.The high quality MRI can be gained by choosing proper metallic materials.