Combining with the feature of ultrasound medicine and obeying the basic principle of feedback

we introduced the sandwich feedback method into standardized training of residents. By telling residents where improvement was needed

residents could clearly know their goal in the process of training. The training pass rate in the sandwich feedback method group and the traditional teaching method group were compared and the results showed that the pass rate in the sandwich feedback method group was higher than that in the traditional teaching method group

indicating that the introduction of sandwich feedback method can help residents comprehend their abilities in time and find out their shortcomings and advantages

so as to improve continuously. In addition

it would effectively supervise and urge teachers to continuously improve their teaching awareness and level.