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From time to time there are reports that the painless ultrasound examination may be harmful to the developing fetus. In spite of all this, it is one of the most commonly performed pregnancy tests. What could be the truth? Harmful or not hurtful?It has been over 40 years since ultrasound was first applied to a pregnant woman. Unlike previously used x-rays, we do not use this as a dangerous fetus during the test. ionizing radiation. Ultrasound and audible sound and wavefunctions of the same physical type differ only in frequency. We know that too loud noises can cause problems in grown-ups, but ultrasounds can't be heard. Are they going to be bad? We are sorry that there is no scientific evidence so far, so we can safely proceed to the next ultrasound examination. But ultrasound has its damaging effects, but only with higher intensity. What are they?
The power of ultrasoundThe cellular effect of high-intensity ultrasound radiation is the result of heat and the so-called cavitation effect.
The energy of motion of the ultrasound wave passing through the body is transformed into heat. The higher the ultrasound frequency, the faster the tissue heats up. The ultrasound absorbing property of the tissue also influences the degree of warming. Bones at the highest levels, and fluids like the amniotic fluid at the smallest levels absorb ultrasound waves. Ultrasonic warming power is used in ultrasound therapy when treating fractured muscles and other tissues. In the meantime, we expose the desired region to continuous ultrasound, usually over a longer period of time.
When used for diagnostic purposes - ultrasound examinations - we use ultrasound waves emitted in short pulses, thus reducing the heating effect, making the examination safer for the developing fetus. The human body can withstand a temperature rise of up to 40 degrees Celsius without harmful effects. The energy of the ultrasound emitted by the different types of ultrasound can be different, which makes it very difficult to determine the "dose" of the ultrasound. Generally, it was acceptable to aim for the smallest ultrasound load in the protection of the unborn child.
But what is cavitation?During the process, ultrasound waves can produce gases dissolved in body fluids in the form of small bubbles. Bubbles exert pressure on the cell wall, which can cause cell degeneration. The phenomenon has no known effect on the developing fetus during diagnostic ultrasound examination.
Ultrasound has been used since the 1950s to examine blood pressure. The method has become widespread by the time we begin to investigate its potential hazards. Most studies so far have not revealed any adverse effects. Nevertheless, further studies are needed to clarify the effects of ultrasound on the unborn child.