The mechanical index, ultrasound practices, and the ALARA principle.
Toms
David A
DA
D000162:Acoustics; D001696:Biomechanical Phenomena / Q000379:methods; D001822:Body Burden; D005260:Female; D005865:Gestational Age; D006801:Humans; D009774:Obstetrics / Q000379:methods; D011247:Pregnancy; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods*; D011874:Radiometry / Q000379:methods*; D012062:Relative Biological Effectiveness; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D016037:Single-Blind Method; D013817:Thermography / Q000379:methods*; D016216:Ultrasonography, Prenatal / Q000009:adverse effects / Q000379:methods*; D014732:Vibration