中国医疗设备2017，Vol.32Issue(1)：50-53,4.DOI:10.3969/j.issn.1674-1633.2017.01.012
O-MAR技术在头颈CT检查中去除口腔内金属伪影的应用评估
Application Evaluation of Orthopedic Metal Artifact Reduction Technique in Reducing Dental Metallic Artifacts in Head and Neck CT Examination
温齐平 1张滨 1潘俊 1樊文鑫 1哈婷婷 1常天静1
作者信息
- 1. 北京大学首钢医院 影像科，北京100144
- 折叠
摘要
Abstract
ObjectiveTo explore the effect of Orthopedic Metal Artifact Reduction (O-MAR) technique in reducing dental metallic artifacts in head and neck CT examination.Methods65 patients with dental titanium prosthesis were conducted head and neck CT angiography scan. The patients were selected from Jan. to Dec. in 2014 of our hospital. The images were reconstructed by two different algorithms of O-MAR technique (group A) and traditional technique (group B). The regions of interest were placed in bilateral masseter muscles. Two groups’ standard deviation of the regions of interest was measured with paired t-test and image quality was subjectively scored. The image quality scores and demonstration of the oral cavity were conducted between two doctors, and analyzed with rank sum test andχ2test.Results The results of two doctors’ image quality scores are: ipsilateral masseter (z=-6.06,P<0.05); contralateral masseter (z=-4.79,P<0.05), the difference is statistically significant. Image quality score in group A is higher than that of group B (χ2=34.03,P<0.05), the difference is statistically significant; The standard deviation results are ipsilateral masseter (t=-9.34,P<0.05) and contralateral masseter (t=-4.06,P<0.05), the difference is statistically significant. There is no significant difference of bilateral masseter standard deviation in group A (t=1.48,P>0.05), while the difference of bilateral masseter standard deviation in group B (t=5.38,P<0.05) is statistically significant.Conclusion O-MAR technique is superior in decreasing the effect of high atomic number artifacts on image quality, and provides valuable information for clinical diagnosis.关键词
金属伪影去除技术/迭代算法/CT血管造影/颈动脉疾病/咬肌Key words
orthopedic metal artifact reduction technique/iterative algorithm/CT angiography/carotid artery disease/masseter muscle分类
医药卫生引用本文复制引用
温齐平,张滨,潘俊,樊文鑫,哈婷婷,常天静..O-MAR技术在头颈CT检查中去除口腔内金属伪影的应用评估[J].中国医疗设备,2017,32(1):50-53,4.
