Ultrasound for the primary care physician. Applications in family-centered obstetrics.

Ultrasound imaging is a noninvasive diagnostic tool that enhances the patient's and physician's understanding of prenatal care. According to a multisite study, use of ultrasound by primary care physicians appears to improve prenatal patient education and support early formation of the family unit. Other potential benefits include early detection of fetal abnormalities, savings in time and cost, and enhanced continuity of care. However, consultation with and referral to specialists, when appropriate, remain essential ingredients for state-of-the-art healthcare. Further studies defining the role and boundaries of ultrasound in primary care are needed.