To explore the quality control effect of the Deming cycle method by comparing the core ultrasound quality control indicators of Beijing sentinel hospitals in 2017 and 2019.

We developed quality control indicators at the structure, process, and result levels, and conducted Deming cycle management through quality control training, single disease quality control, and on-site quality control guidance. Structure and process quality control indicators in 71 hospitals in Beijing were compared between 2017 and 2019 by the rank sum test. Result quality control indicators were compared by paired sample t test.

Based on the Deming cycle management, Beijing had an average of 1.18 (0.92, 1.58) sonographers per 10,000 patients in 2019, which had a 11.94% decrease compared with that in 2017 [1.34(1.01, 2.31) persons/10,000 person-times]. In 2019, the average daily workload of sonographers in Beijing was 33.85 (25.59, 43.36) person-times, which exhibited an increase of 13.36% compared with that in 2017 [29.86 (17.86, 39.65) person-times]. The average positive rate of ultrasound in 2019 was (0.72±0.19), which was significantly higher than that in 2017 (0.56±0.23, t=-4.021, P＜0.001). In 2019, the average coincidence rate of ultrasound diagnosis was (0.84±0.09), which had an increase of 3.70% compared with that in 2017 (0.81±0.14).

The implementation of the Deming cycle improves the core quality control indicators, such as the coincidence rate of ultrasound diagnosis, though ultrasound workload increases.