This paper introduces the teaching method of medical-electrical cross-integration and the teaching practice experience in the past three years by taking the integration of medicine and electrical engineering as an example. Starting from the analysis of the characteristics of learning situation, the teaching introduction process, the case discussion and analysis, and the after-class tracking and improvement, this paper analyzes the characteristics of the medical-electrical cross-teaching and proposes the corresponding teaching methods and supporting cases. Preliminary exploration attempts show that this teaching method can improve students' comprehensive ability, especially multidisciplinary thinking ability, and has a certain positive effect.

Objective:To investigate the status of satisfaction of postgraduates majoring in public health with the teaching material of The prevention and control of chronic non- communicable disease, so as to provide the basis for promoting the teaching and optimizing the reprint of the teaching material. Methods:An online survey was conducted among 180 public health postgraduates of Batch 2018 to Batch 2020 from China CDC who took the selective course of "prevention and control of chronic non-communicable diseases". The survey content included the overall satisfaction of the respondents with the teaching material and such four levels of satisfaction as primary indicators at the content level, thinking level, motivation level and arrangement level and 20 secondary indicators. The statistical analysis was made by SPSS 25.0.Results:The effective response rate was 90.56% (163/180), and the overall satisfaction of postgraduates with the teaching material was 88.96%. The satisfaction of "scientificity", "comprehensiveness", "internal coordination" and "hierarchy" at the content level, "systematic thinking" and "quality education" at the thinking level, "deepening the understanding and application of relevant knowledge in the field of chronic disease prevention and control" and "the content is convenient for self-study and helps guide the construction of new knowledge" at the motivation level, and "accurate words, fluent language and easy to read and understand" and "firm binding, good paper quality and clear printing" at the arrangement level of the teaching material was more than 90.00%. Only the satisfaction of "the critical thinking" at the thinking level and "stimulating learning enthusiasm" at the motivation level was less than 85.00%.Conclusion:The teaching material of The prevention and control of chronic non- communicable disease meets the learning needs of postgraduates majoring in public health, and students have high overall satisfaction evaluation on the teaching material. It is necessary to further optimize the two aspects of "the critical thinking" and "stimulating learning enthusiasm" in the revision of the teaching material.

BACKGROUND:Due to the young age of children,the occipital condyle and foramen magnum are not fully developed,and they are prone to various diseases and injuries in the occipitocervical junction,which requires surgical treatment in severe cases.However,anatomical parameters for the development of the occipital condyle and foramen magnum in children are lacking. OBJECTIVE:To measure the morphological structure of the occipital condyle and foramen magnum by three-dimensional reconstruction technique,and to provide important anatomical parameters for occipitocervical junction lesions,related surgical procedures and forensic identification. METHODS:Imaging data of 389 cases of primitive children and adolescents involved in skull base undergoing spiral CT scanning(247 males and 142 females)aged 1-18 years were collected and divided into 1-3-year-old group,4-6-year-old group,7-9-year-old group,10-12-year-old group,13-15-year-old group,and 16-18-year-old group according to their age.Mimics 16.0 software was used to reconstruct the skull base and measure the length and width of the foramen magnum.A formula was used to calculate the area and index of the foramen magnum.We measured the length,width and height of the occipital condyle,the angle between the long axis and the sagittal axis of the occipital condyle(O-S angle),the included angle between the midpoint of the front and back edges of the foramen magnum and the connection between the back edge of occipital condyle and the intersection point of the foramen magnum(F-O angle),and the included angle between the midpoint of the front and back edges of the foramen magnum and the midpoint of the back wall of the sublingual neural tube(F-H angle).Gender,side and age differences were analyzed among the indicators. RESULTS AND CONCLUSION:(1)In foramen magnum measurement,there was no significant difference between sexes in the index of the foramen magnum(P>0.05),but there were significant differences in length,width and area of the foramen magnum(P<0.05).(2)The O-S angle,F-O angle and F-H angle of the occipitral condyle were not significantly different between genders(P>0.05),but length,width and height of the occipital condyle were significantly different between genders(P<0.05).(3)There were no significant differences in the length of the occipital condyle among different groups(P>0.05),but there were significant differences in the width and height of the occipital condyle,O-S angle,F-O angle and F-H angle among different groups(P<0.05).(4)Length,width and area of the foramen magnum,length,width and height of the occipital condyle showed a wavy increasing trend with the increase of age,while O-S,F-O and F-H angles showed a wavy decreasing trend with the increase of age,while the index of the foramen magnum showed no significant change.(5)In conclusion,there are gender and lateral differences in the morphological indexes of the foramen magnum and the occipital condyle in children.These differences can provide an important reference for clinical surgical approach selection and forensic examination.