Radiation-Induced Second Cancer Risk Estimates from Radionuclide Therapy

Bryan Bednarz, Abigail Besemer

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


The use of radionuclide therapy in the clinical setting is expected to increase significantly over the next decade. There is an important need to understand the radiation-induced second cancer risk associated with these procedures. In this study the radiation-induced cancer risk in five radionuclide therapy patients was investigated. These patients underwent serial SPECT imaging scans following injection as part of a clinical trial testing the efficacy of a 131Iodine-labeled radiopharmaceutical. Using these datasets the committed absorbed doses to multiple sensitive structures were calculated using RAPID, which is a novel Monte Carlo-based 3D dosimetry platform developed for personalized dosimetry. The excess relative risk (ERR) for radiation-induced cancer in these structures was then derived from these dose estimates following the recommendations set forth in the BEIR VII report. The radiation-induced leukemia ERR was highest among all sites considered reaching a maximum value of approximately 4.5. The radiation-induced cancer risk in the kidneys, liver and spleen ranged between 0.3 and 1.3. The lifetime attributable risks (LARs) were also calculated, which ranged from 30 to 1700 cancers per 100,000 persons and were highest for leukemia and the liver for both males and females followed by radiation-induced spleen and kidney cancer. The risks associated with radionuclide therapy are similar to the risk associated with external beam radiation therapy.

Original languageEnglish (US)
Article number04020
JournalEPJ Web of Conferences
StatePublished - Sep 25 2017
Externally publishedYes
Event13th International Conference on Radiation Shielding, ICRS 2016 and 19th Topical Meeting of the Radiation Protection and Shielding Division of the American Nuclear Society, RPSD 2016 - Paris, France
Duration: Oct 3 2016Oct 6 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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