title: Combined one- and two-dimensional ultrasound system for monitoring fetal breathing movements.
abstract: A combined one- and two-dimensional ultrasonic system for monitoring respiratory movements in the human fetus has been developed. A real-time cross-sectional image of the fetal chest at the level of the fetal heart can be obtained, and a time motion recording of fetal respiratory movements can then be written on a strip-chart recorder. Combining the features of one-dimensional and two-dimensional systems produces an accurate means of investigating fetal breathing movements.
mesh_terms: D004582:Electronics, Medical / Q000379:methods; D005260:Female; D005333:Fetus / Q000502:physiology*; D006801:Humans; D011247:Pregnancy; D012119:Respiration; D012129:Respiratory Function Tests / Q000379:methods*; D014463:Ultrasonography