![doppler for pregnancy doppler for pregnancy](https://bumpsnbaby.com/wp-content/uploads/2016/06/doppler-test.jpg)
When modern sophisticated equipment is used at maximum operating settings for Doppler examinations, the acoustic outputs are sufficient to produce obvious biological effects, e.g. The Output Display Standard recently adopted by the FDA, in the USA, encourages self-regulation of acoustic exposure by the ultrasound user, on the basis of assumed knowledge of the implications of biophysical interactions. United States Food and Drug Administration (FDA) regulations now provide an option whereby equipment that provides a form of output display can be used to apply substantially higher acoustic output to the embryo or fetus than equipment approved for use under application-specific intensity limits. The benefits of Doppler screening are less well established. Doppler ultrasound has become widely accepted as a valuable diagnostic tool in obstetric medicine, where it has particular benefits for high-risk pregnancies.
![doppler for pregnancy doppler for pregnancy](https://i.ebayimg.com/images/g/gzIAAOSw5xhcR9KD/s-l640.jpg)
![doppler for pregnancy doppler for pregnancy](https://images.baby-monitor.org/l-m/Pregnancy-Fetal-Doppler-Baby-Heart-Monitor-2-5-MHz-Fetus-Probe-Backlit-LCD-v-4198870908.jpg)
The advent of pulsed spectral Doppler and color flow imaging has revolutionized perinatal applications. Meanwhile, there is a developing trend to use ultrasound at early stages of pregnancy when the developing embryo is known to be highly sensitive to damage by physical agents. Technological development has led to significant improvements in ultrasonographic capabilities in recent years, and this has been accompanied by increases in acoustic output.