陈凤林教授指出：B超测量子宫体的长、宽、厚分别低于5厘米、4厘米、2厘米者、才能诊断子宫发育不良。阴道超声比普通的腹部超声更准确。最精准的B超是全景四维彩超，宫腔内可以立体全方位成像，当然还要辅助其他检查综合诊断。Professor Chen fenglin pointed out: B ultrasonic measurement of the length, width and thickness of the uterine body is less than 5 cm, 4 cm and 2 cm, respectively, to diagnose uterine dysplasia. Vaginal ultrasound is more accurate than conventional abdominal ultrasound. The most accurate b-mode ultrasound is the panoramic four-dimensional color ultrasound, which can be used for stereoscopic omni-directional imaging inside the uterine cavity. Of course, it should also assist other examinations and comprehensive diagnosis.