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mimisa 发表于 2014-3-28 21:53 
b超怎么说都有辐射,孩子太小不合适做的
B超有辐射的说法真的不是真的
B超对孩子不好所以好少做的说法好像在国内很盛行 各种以讹传讹的说法都有
这事儿我说了不算 U.S. Department of Health and Human Services 说的可以算吧?
http://www.fda.gov/Radiation-Emi ... aging/ucm115357.htm
Risks/Benefits
Ultrasound imaging has been used for over 20 years and has an excellent safety record. It is non-ionizing radiation, so it does not have the same risks as x-rays or other types of ionizing radiation.
Even though there are no known risks of ultrasound imaging, it can produce effects on the body. When ultrasound enters the body, it heats the tissues slightly. In some cases, it can also produce small pockets of gas in body fluids or tissues (cavitation). The long-term effects of tissue heating and cavitation are not known.
Because of the particular concern for fetal exposures, national and international organizations have advocated prudent use of ultrasound imaging. Furthermore, the use of diagnostic ultrasound for non-medical purposes such as fetal keepsake videos has been discouraged. |
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