To summarize the work of regional ultrasonic quality control management and improve the medical technology and service ability of regional grass-roots units through quality control management.

The ultrasonic quality control was carried out in the primary hospitals of Yinzhou District, Ningbo City, and the differences before and after the quality control were compared from seven aspects: legal practice, medical safety, diagnosis and treatment environment, instruments and equipment, standard operation, establishment of quality control system, and standardized inspection and diagnosis. Based on whether the data followed a normal distribution and homogeneity of variance, analysis of variance or non-parametric test was used for comparison among groups, and LSD-t test was used for comparison between two groups.

The quality control in primary hospitals was carried out through the unified Yinzhou District ultrasound quality control assessment program. From 2012 to 2019, the examination scores of central and non-central level hospitals had significantly increased year by year (t=17.469, 15.825, 7.308, 43.958, 3.350, all P<0.05). The examination scores of central-level hospitals were significantly higher than those of non-central-level hospitals. In 2016, there was no significant difference between central-level and non-central-level hospitals. In 2017, 2018, and 2019, there were significant differences among central, non-central, and private hospitals (F=577.202, 337.263, 353.738, P<0.001). The number of ultrasound doctors who were not certified and did not match the scope of practice decreased year by year. By establishing a strict check-up system, emergency reporting system, hospital sense control, the emergency rescue plan for critical diseases in the department, and the proportion of the department staff who have mastered CPR, there were no major medical disputes or medical complaints in the whole region from 2012 to 2019. The number of hospitals with quality control environment for diagnosis and treatment increased year by year; 88 color ultrasonic instruments were tested in basic hospitals in the region, and the number of old instruments decreased. Through skill training of basic-level doctors for ultrasonic operation, computer picture and text report was realized in the whole region, and the image data were archived. Standardized inspection and diagnosis through college study, technical teaching by experts at the grass-roots level, establishment of a unified reporting template in Yinzhou District, development of quality control management indicators, and other measures were also adopted.

Continuous improvement of the quality control system improves the level of ultrasonic diagnosis in primary hospitals. It is expected to achieve regional homogeneity of ultrasonic diagnosis.