A. Radiation Exposure Prior to Conception
For exposures to ionizing radiation prior to conception, genetically heritable risks have not been documented in the human population. The heritable risks to progeny from diagnostic levels of radiation are not a realistic concern [6]. This might seem to contradict the emphasis on the proper use of gonad shielding during examinations. However, those recommendations are provided as a hedge against potential effects in the population as a result of effects in the gene pool [16].