Saturday, February 12, 2011

B ultrasonic examination of pregnant ?

    B-different X-ray, and its side effects are marginal compared to X-ray and therefore in the minds of most people rarely talk about B-harm to people. In fact, B-point is not without side effects.
    In order to observe the B-irradiated 6 to 8 weeks of pregnancy the embryo of pregnant women, medical experts have chosen the age of 18 to 30 years old, without any abnormality of the normal pregnant women, so that they induced abortion before the embryo with B-irradiated site and time 5,10,30 minutes, respectively, showed that B-unsafe factors. When the B-irradiation 10 minutes to see the content of MDA increased embryonic villi. The number of tissue malondialdehyde, marking the extent of lipid peroxidation. The higher degree of lipid peroxidation, free radicals produced by a variety of the more lively. Free radicals known as the "body spam", this metabolic waste in the more human the more disadvantaged.
    Under normal circumstances, the removal of free radicals, mainly superoxide dismutase to complete. When the B-irradiation time of 30 minutes, fluff superoxide dismutase were significantly decreased, and tissue MDA has continuously increased. This means that organizations remove "body spam" destroyed the ability of lipid peroxidation increased, metabolite changes and more, and then lead to cell damage. The 6 to 8 weeks of pregnancy, it is the embryonic period of organ formation in a long time will obviously affect the B-weak correction of fetal growth and development. However, B-in a short time will not cause harm to the embryo, but not over too long. In general, 6 to 8 weeks of pregnancy pregnant women B-examination, the exposure time should be controlled in 5 minutes.

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