No pregnant or potentially pregnant patient should ever receive ultrasound therapy in any area of the body which is likely to result in exposure to the fetus. Overheating of the fetus could result. The fetus is at particularly high risk during the first trimester, during the period of organogenesis
NCRP Report No. 74 (1983), "Biological Effects of Ultrasound: Mechanisms and Clinical Implications", National Council on Radiation Protection and Measurements, 7910 Woodmont Avenue, Bethesda, MD, 20814, issued December 30.
P.P. Lele (1979), "Safety and Potential Hazards in the Current Applications of Ultrasound in Obstetrics and Gynecology", Ultrasound in Med. and Biol., Vol. 5, pp. 307-320. 64. M. Dyson (1985), "Therapeutic A
77. D.C. Reid (1981), "Possible Contraindications and Precautions Associated with Ultrasound Therapy", In: A. Mortimer, N. Lee (eds.), Proceedings of International Symposium on Therapeutic Ultrasound, Canadian Physiotherapy Association, Winnipeg.
78. E.M. Oakley (1978), "Dangers and Contraindications of Therapeutic Ultrasound", Physiotherapy, Vol. 64, p. 174.