Irradiation to the thyroid gland at cardiac catheterization and angiocardiography in children

摘要: Abstract Irradiation to the thyroid gland was measured during cardiac catheterization in 16 infants and 30 children aged 1 13 years. The doses from fluoroscopy, full-scale angio-cardiography, cineradiography were separately with thermoluminescent dosimeters and, addition, exposure-area product assessed fluoroscopy a transparent ionization chamber. Median value of absorbed dose complete heart investigation 370 mrad 260 children. highest values also greatest range dosage observed infants. quotient thyroid-absorbed divided by integral or per exposed film area infants, due anatomical conditions. comes almost exclusively scattered radiation. By appropriate examination technique this can be kept within acceptable limits.