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.

Objective To investigate neutrophil lymphocyte ratio (NLR) in early-stage diabetic nephropathy and its clinic significance. Methods The 145 subjects were divided into two groups:the healthy control group (n=54) and early stage diabetic nephropathy group (n=91). The numbers of neutrophils (N) and lymphocytes (L) as well as the NLR values of peripheral blood and other biochemistry index were examined. Factors of early stage diabetic nephropathy were calculated us?ing variance and logistic regression analysis. Results Creatinine(Cr), total cholesterol(TC), triglyceride(TG), LDL-C, neu?trophils number and CRP in DN group were significantly higher than those of the control group and lymphocytes numbers of DN group were significantly lower than that of the control group (P<0.05 respectively);NLR values were significantly higher in diabetic nephropathy group compared with those of healthy control group(2.52±0.57 vs 1.82±0.60,t=6.997, P<0.01). Lo?gistic regression analysis showed that the risk factors of DN include NLR, TG and total cholesterol. NLR ( P <0.001, OR=8.951, OR 95%CI:3.595-22.287) was significantly associated with DN. Conclusion High NLR values may be a predic?tive and reliable marker ofearly-stage DN.

Objective:To explore the effects of magnanimous therapy on the magnanimous and enterprising traits of lung cancer patients and the analysis of related factors.Methods:Totally 197 patients with lung cancer were divided into individual group ( n=62), team group ( n=75) and control group ( n=60). Comparison and correlation analysis were applied to the data before and after the electroencephalogram and the magnanimous questionnaire, the cancer response questionnaire, the T-type psychological scale, the cancer heart state questionnaire and the cancer patient's life function index scale. t test, analysis of variance and Pearson correlation analysis were processed by SPSS 23.0. Results:After treatment, the " enterprising" dimension and " magnanimous" dimension of individual group and the " enterprising" dimension of the team group ((3.035±0.309), (3.041±0.265), (3.173±0.371)) were higher than that before treatment((2.934±0.326), (2.908±0.315), (3.130±0.387), all P<0.05). There was negative correlation between " magnanimous" dimension of the magnanimous questionnaire and " subconscious" dimension of the T-type psychological scale in individual group( r=-0.280, P<0.05). In team group, the " enterprising" dimension of the magnanimous questionnaire was negatively correlated with " Psychological" and " Yield" dimension of the cancer heart state questionnaire( r=-0.279, -0.285, P<0.05), and positively correlated with " Facing" of the cancer response questionnaire, " Good physical condition and ability" and " Psychological well-being" dimension of the cancer patient's life function index scale( r=0.367, 0.402, 0.379, P<0.05). There was a negative correlation between the " enterprising" dimension of the magnanimous questionnaire and the beta wave value in individual group. Conclusion:The magnanimous therapy can improve enterprising and magnanimous level of patients with lung cancer, and the effects are related with the above-mentioned psychosomatic factors.