Prenatal Radiation Exposure: Background Material for CounselingPregnantPatientsFollowingExposuretoRadiation

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2011年04月01日(Fri) 10:47

胎児の放射線に関する最新論文です。

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Prenatal Radiation Exposure: Background Material for
CounselingPregnantPatientsFollowingExposuretoRadiation

Fetal sensitivity to radiation-induced health effects is related to gestational age,
and it is highly dependent on fetal dose. Typical fetal doses from diagnostic
radiology are usually below any level of concern. Although rare, significant
fetal radiation doses can result from interventional medical exposures (fluoroscopically
guided techniques), radiation therapy, or radiological or nuclear incidents, including
terrorism. The potential health effects from these large radiation doses (possibly large
enough to result in acute radiation syndrome in the expectant mother) include growth
retardation, malformations, impaired brain function, and neoplasia. If exposure occurs
during blastogenesis (and the embryo survives),thereisalowriskforcongenitalabnormalities.
(Inallstagesofgestation,radiation-inducednoncancerhealth effects have not been reported
for fetal doses below about 0.05 Gy [5 rad].) The additional risk for childhood cancer
from prenatal radiation exposure is about 12% per Gy (0.12%/rad) above the background
incidence.

(Disaster Med Public Health Preparedness. 2011;5:62-68)

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