Kazuo Maeda *
Ultrasonic fetal diagnosis has been tremendously progressed in the real-time B-mode, transvaginal scan, Doppler ultrasound, 3D and 4D ultrasound, for the diagnoses of fetal development, genetic abnormalities, fetal sex, fetal behavior and various fetal diseases. Ultrasonic Doppler fetal monitoring promoted functional fetal diagnosis and the analysis of fetal movement using ultrasonic Doppler actocardiogram for the advanced monitoring, fetal behavior, and solution of problems in the cardiotocogram e.g. the differentiation of physiologic sinusoidal FHR. The rapid delivery was recommended before the loss of FHR variability from the actocardiographic studies on the development of FHR variations.
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