钴铬合金在磁共振自旋回波序列T1,T2加权成像中伪影的比较

Comparison of artifacts from CoCr alloy crown in T1WI/SE and T2WI/FSE

目的:比较钴铬单冠和桥体在自旋回波序列T1,T2加权像中磁共振成像伪影大小。方法:用钴铬合金制作中切牙、尖牙、桥体第二前磨牙金属底冠,第一、二磨牙金属冠,放置于牙列中,分别包埋于150mm×150mm×150mm琼脂中,放置于自旋回波序列T1,T2加权像中,比较磁共振伪影范围。结果:钴铬合金单冠中切牙、尖牙、桥体在矢状面、冠状面和横断面上形成伪影的形状相似,但大小不同,在自旋回波序列T1,T2加权像中伪影大小无明显不同。结论:钴铬单冠和桥体在自旋回波序列T1,T2加权像中磁共振成像伪影的大小无明显差异。

Objective： To compare the range of artifacts generated by CoCr alloy in T1WI/SE and T2WI/FSE.Methods： CoCr single crown and bridge embedded in 150mm×150mm×150mm agar,and the range of artifacts were observed and compared.Results： The artifacts from CoCr single crown and bridge are similar,which have shown difference in size and no significant difference in T1WI/SE,T2WI/FSE in transverse,coronal and sagittal planes.Conclusion： There is no significant difference in T1WI/SE and T2WI/FSE.