SPECT / CT Skeleton: Determination of Individual Radiation Risk

SPECT / CT of skeletal bones refer to diagnostic studies with increased radiation exposure to the patient. In this regard, such studies require monitoring the risks of radiation-induced lesions, especially the risk of secondary cancer. For 65 patients with verified metastases of the skeletal bones, comparative studies of individual radiation risk assessments were performed, calculated on three different radiation-epidemiological models based on previously obtained values of effective internal dose from the radiopharmaceutical with SPECT and external exposure with X-ray CT. Two of these models are based on the recommendations of the ICRP, one of which is implemented in the form of a specialized calculator, and the third is based on the recommendations of the BEIR Committee (USA). It is shown that almost all individual radiation risk assessments calculated by these models are within the categories of low and very low risk. Despite some overestimation of radiation risk assessments, for simple and quick determination of individual estimates of current and accumulated radiation risk, it is recommended to use a radiological automatic calculator, accessible via the Internet.

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