Ultrasound in pregnancy

Ultrasound: high-frequency sound waves that travel at 10 to 20 million cycles per second. The format of the image of ECHO waves causes bone tissue.

Later, radiologist United Kingdom Meire hard disk, pregnancy who was doing the scans for 25 years, said, "casual observer say, might wonder why medical sonography profession has become involved in pregnant patients with wholesale of machinery for different powers emanating from one of which is shown to be harmful to obtain information which is not shown to be associated with the clinical value of using operators who are not certified competent to perform the operations."

Memory (RPU) routine ultrasound detecting ultrasound prenatal nutrients actually only between 15 to 85% mtinokot one in 50 who already major distortions at birth. RPU identify placenta (placenta previa) was. However, 19 out of 20 ladies with placenta previa has been identified with early you can scan unnecessarily concerned: placenta to advance effectively without cause problems during birth. Moreover, identification of placenta previa by RPU is not found to be safer than identify a child.

American sonography College of vbrpoaa have figured "among a population of women with low-risk pregnancies, although significant and equally splendid perinatal rate of unnecessary interventions have watching mshgrtiot ultrasound diagnosis. Thus ultrasound should be done for specific indications pregnancylow risk.

Results of ultrasound cavitation, a process which included pockets small existing gas within tissues of mammalian influx which vibrate. In this mode "… temperatures of many thousands of degrees Celsius inside the gas to create a wide variety of potentially toxic chemicals, some of them. These processes can be complex and violent by microsecond pulses of which you utilized medical Diagnostics. " (American Institute of medical ultrasound Bioeffects report 1988). Meaning of cavitation human tissue is unknown.

Studies suggest these effects are genuine concern tissues alive:

* Cell which the distortions contact with ultrasound seemed to persist for several generations.

On infant rats (a similar stage of development as human learn 4-5 months in utero), ultrasound can cause damage to the myelin covering of nervous.
* Expose standard dosages for mice ultra ultrasound 22% drop in speed cased of mitosis doubling according to aptosis rate (programmed cell death), cells of the intestine.
* Two long-term randomized controlled trials comparing the compromised development agencies, and at the age of eight to nine found maoltrsaondmeasurable impact. However, the authors than the strength of response consisting in use today are many times higher than they were in 1979-1981.

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