
Keywords: مقداری کم که از لحاظ منطقی قابل دستیابی باشد; CROCUS; cross-country ultrasound study; ISUOG; International Society of Ultrasound in Obstetrics and Gynecology; WFUMB; World Federation of Ultrasound in Medicine and Biology; ALARA; as low as reasonably achievable; Ultrasonography; Health care profession