Large Exposure to the Fetus

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  • At fetal doses in excess of 500 mGy (50 Rad), there can be significant fetal damage during the first trimester, the magnitude and type of which is a function of dose and stage of pregnancy.
  • High fetal doses (100-1000 mGy) during late pregnancy are not likely to result in malformations or birth defects since all the organs have been formed.
  • At fetal doses between 100 and 500 mGy, the pregnant woman and her physicians should make a decision on whether to terminate the pregnancy. This determination should be based upon individual circumstances.


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