Objective To explore the differences in abdominal image quality between domestic and imported advanced ultrasonic equipments.

Methods A total of 955 subjects from 18 hospitals of different levels in 8 provinces and municipalities were selected. Each subject was examined by one domestic and one imported ultrasonic equipment by the same doctor, and 26 abdominal ultrasound image evaluation standard sections were collected, respectively. According to relevant national and regional regulations, experts were organized to develop the quality evaluation standard of ultrasonic abdominal images, and the collected ultrasonic image data were quantitatively evaluated. Likert scale was used to score, with 5 being the best and 1 being the worst. R language was used for data analysis and comparison of five domestic (Ⅰ, Ⅱ, Ⅲ, Ⅳ, and Ⅴ) and six imported (A, B, C, D, E, and F) ultrasound equipments of the abdomen image quality.

Results A total of 49 660 abdominal ultrasound images were collected. The abdominal image quality score of domestic and imported ultrasound equipments was similar overall, and the difference was not statistically significant. Performances of domestic Ⅰ and Ⅳ were comparable with imported B, which had the highest score. Domestic Ⅱ and Ⅲ showed poor performances in grayscale detail resolution, smoothness and filling degree of color Doppler flow imaging, and the low-speed blood flow sensitivity in time velocity curve. There was no statistically significant difference between domestic and imported ultrasound equipments in the score of grayscale, color Doppler blood flow imaging, and time velocity curve.

Conclusions The abdominal image quality of advanced domestic ultrasound equipments is good, with no significant difference between them and that of imported equipments. The abdominal image quality of advanced domestic ultrasonic equipments has been widely recognized by ultrasonic experts.