As it is known, is safe in the world there is nothing. This truism applies fully and ultrasound. Ultrasound, unfortunately, is not an entirely innocuous environmental factor. With high intensity and high cumulative doses of radiation, ultrasonic waves can damage the genetic apparatus of living cells, and even physically destroy them. With regard to the fetus it is fraught with gross deformities and even death — and that has been proven in experiments on embryos of animals in the 70-ies of the last century. Of course, such a dose and intensity have never been used in a standard ultrasound scan of the human fetus. Epidemiological evidence that conventional ultrasound scanning any significant deleterious effect against the human embryo and fetus is not. That is why the relevant committee of experts of the World Health Organization formally approves four-ultrasound during pregnancy. Discussing with that previously given 10 weeks of pregnancy research, if possible, should not be spending.
No smoke without fire, as they say, is not the case, and in the medical literature of a no-no, and will fly the next bad news regarding ultrasound. For example, in June 1999, a group of researchers from Dublin released a study casts doubt on the complete safety, even those parameters ultrasound used in obstetrics. In particular, this research found a higher percentage of pre-cancerous mutations in embryos of mice subjected to non-intensive sonicated— Just this, what happens in normal prenatal ultrasound.
This means that the likelihood of developing cancer in mice exposed in utero sonicated, slightly higher compared to animals in the U.S. do not suffer from the mother's womb. Although the researchers themselves are far from being able to make any definitive conclusions can not ignore them if they wanted to.
In general, without any of the usual medical technology symbolic "weights" family planning to have offspring, can not do in the case of obstetric ultrasound. But consider this: on one side of the balance is quite significant (2 to 4 per cent) risk of having a child with a debilitating deformity, and on the other — the preliminary results of a single study conducted on laboratory mice. Millions of children in the past decade were in utero sonicated, wherein no epidemiological studies, as already stated, is not found associated anxiety effect changes in the state of Child Health.
Yes, ultrasound— Sufficiently serious physical phenomenon, and it would be unreasonable to treat it simply and serenely: 8-10 times to try to "see" sex of the fetus or reused and unnecessarily refined his presentation and the character of the heart. But the two-obstetric ultrasound screening is now fully justified, notwithstanding the fact that the work of scientists from Dublin gave rise to the medical world's most serious reflection.