华西口腔医学杂志2016，Vol.34Issue(3)：277-280,4.DOI:10.7518/hxkq.2016.03.012
3.0 T磁共振6个序列产生金属伪影程度的对比
Contrastive analysis of artifacts produced by metal dental crowns in 3.0 T magnetic resonance imaging with six sequences
摘要
Abstract
Objective This study aimed to observe and evaluate six 3.0 T sequences of metallic artifacts produced by metal dental crowns. Methods Dental crowns fabricated with four different materials (Co-Gr, Ni-Gr, Ti alloy and pure Ti) were evaluated. A mature crossbreed dog was used as the experimental animal, and crowns were fabricated for its upper right second premolar. Each crown was examined through head MRI (3.0 T) with six sequences, namely, T1 weighted-imaging of spin echo (T1W/SE), T2 weighted-imaging of inversion recovery (T2W/IR), T2 star gradient echo (T2*/GRE), T2 weighted-imaging of fast spin echo (T2W/FSE), T1 weighted-imaging of fluid attenuate inversion recovery (T1W/FLAIR), and T2 weighted-imaging of propeller (T2W/PROP). The largest area and layers of artifacts were assessed and compared. Results The artifact in the T2*/GRE sequence was significantly wider than those in the other sequences (P<0.01), whose artifact extent was not signifi-cantly different (P>0.05). Conclusion T2*/GRE exhibit the strongest influence on the artifact, whereas the five other sequences contribute equally to artifact generation.关键词
伪影/MRI序列/快速自旋回波/自旋回波Key words
artifacts/MRI sequences/fast spin echo/spin echo分类
医药卫生引用本文复制引用
高岚,廉云敏,王璞,怀海丽..3.0 T磁共振6个序列产生金属伪影程度的对比[J].华西口腔医学杂志,2016,34(3):277-280,4.基金项目
河北省卫生厅科研攻关计划（08115）Supported by：Science and Technology Reaserch Plan of Health and Family planning Commission of Hebei (08115) （08115）
