Objective:To explore the application and effectiveness of online teaching in the teaching of medical imaging diagnostics.Methods:A total of 134 undergraduate students of Medical Imaging Technology Department of Chongqing Medical University in Batch 2016 and Batch 2017 were selected as the research objects. They were divided into control group and experimental group with 67 students in each group. The experimental group adopted the online teaching mode based on Xuexitong and Tencent Meeting learning platforms; while the control group adopted the traditional teaching mode. The final grades of two groups were compared, and self-made questionnaires were anonymously investigated, so as to realize the evaluation of online teaching effects. SPSS 21.0 was used for rank sum test.Results:The qualification rate of final results in the experimental group and control group were respectively 80.6% (54/67) and 64.2% (43/67). The qualification rate of final results in the experimental group students was significantly better than that of the control group ( P<0.05). A total of 134 survey questionnaires were distributed and all recovered. The survey questionnaires showed that experimental group was superior to the control group in self-learning ability, analyzing and solving problems ability, communication skills, interest and enthusiasm in learning ( P<0.05). Conclusion:The online teaching is conducive to improving the qualification rate of final results, self-learning ability, analyzing and solving problems ability, communication skills, interest and enthusiasm in learning for the teaching of medical imaging diagnostics, which has good teaching effects and qualities and is of great promotion significance.

Obesity-related hypertension is a common hypertension as well as a common chronic disease with wide distribution and great harm to human health. In recent years, this disease has become one of the hot issues of public health due to the significant increase in prevalence. The pathogenesis and pathway of obesity-related hypertension are not yet clear, and the research on its pathogenesis has received extensive attention. Studies have shown that they are regulated in most biological processes, including differentiation, proliferation, migration, and apoptosis. The miR-200 family is a group of miRNAs, which have been suggested to play a crucial role in obesity-related hypertension and glucolipid metabolism dysfunction in recent years. This paper reviews relevant research results, suggesting that the expression level of miR-200 family in obese patients with hypertension is higher than that in healthy people, which regulates the occurrence and development of hypertension through mediating oxidative stress response and GATA expression level. This review reveals the relationship between miR-200 family and obesity-related hypertension, which offers new clues to explore potential therapeutic targets for obesity-related hypertension.