The biodosimetry assessment of whole body exposure after administration of iodine therapy to differentiated thyroid cancer patients

The radioiodine therapy administration is one of the most important approaches for a treatment a differentiated thyroid cancer. The clinic efficiency of radioiodine therapy has been proved for locally advanced cancer and for metastases in lymph nodes when such therapy is exclusive treatment mode. However the benefits and risks of radioiodine therapy have been a subject of contributing controversy. The investigation of a whole body internal exposure after radioiodine therapy is necessary for further improvement quality of therapy planning, forecast amendment and estimation of possible side effects. This study aimed to develop a new method of estimation and analysis of negative side effects resulted from additional human body exposure after radioiodine therapy administrated to patients with differentiated thyroid cancer. Such negative side effects have been studied using a cytogenetic analysis of radiation induced chromosomal aberrations in peripheral blood lymphocytes of patients with differentiated thyroid cancer. The study group comprised physicians and thyroid cancer patients was examined. It was found cytogenetic dose ranged 0-0.2 Gy (0.12 averaged) for physicians and 0.28-0.48 Gy (0.36 Gy averaged) for patients.