ITI种植体在3.0 T MRI检查中的伪影影响  

Artifact Influence of ITI implants on 3.0 T MRI Examination

作　　者：王成洁 武丽春 康华[2] 林庆 

机构地区：[1]中国医学科学院北京协和医院口腔科,北京100005 [2]北京中医药大学东直门医院放射科核磁共振室,北京100700 [3]北京市丰台区西罗园社区卫生服务中心,北京100077

出　　处：《中国医疗设备》2012年第11期160-162,共3页China Medical Devices

摘　　要：目的探索不同体积ITI种植体在3.0T磁共振成像(MRI)检查中的伪影影响。方法将同一直径不同长度的两枚ITI种植体分别固定在志愿者两侧下颌骨皮肤表面,做MRI测试。磁共振仪磁场强度为3.0 T,采用TSE/EPI序列。结果两枚种植体都能在MRI检查中产生伪影,影响局部区域成像质量,其中体积较大的种植体产生的伪影更大。结论纯钛ITI种植体在MRI检查中,对其周围软组织成像有一定影响,并且伪影面积大小与种植体体积有关。Objective To investigate the artifact influence of IT1 implants with different volumes on 3.0T MRL Methods Two ITI implants with the same diameter but different length are fixed on skin sttrfaee of the bilateral mandibular, then these volunteers are detected by MRI. The magnetic field intensity is 3.0 T, and TSE/EPI sequence is used. Results Both of implants produce artifacts on the MRI, which could affect image qualities of local area. And the implant with larger volume has bigger artifact. Conclusion Under MRI examination, the ITI implants with pure titanium has certain influence on imagings of surrounding soft tissues. And the areas of the artifacts are relate to implant volume.

关 键 词：磁共振成像 ITI种植体 伪影 

分 类 号：R783.3[医药卫生—口腔医学] R445.2[医药卫生—临床医学]