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Unlike x-rays, sonograms are completely harmless and do not involve radiation. They simply involve high-frequency sound waves that allow an ultrasound technician to see organs, muscles, tendons, and tissues. An ultrasound's only effect is warming of the tissues at which it is directed. The process is so safe that one of its main uses is on pregnant mothers and fetuses. The procedure is also non-invasive and painless. Uncertainties about this technology are of the past.

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13y ago

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