What question did this study set out to answer?

This research aims to analyze factors affecting external dose rate attenuation in thyroid cancer patients post I-131 therapy.

February 11, 2026Open Access

Analysis of external dose rate attenuation and its related factors in differentiated thyroid carcinoma patients following I-131 therapy

Key Points

This research aims to analyze factors affecting external dose rate attenuation in thyroid cancer patients post I-131 therapy.
Correlational analysis of external dose rate (EDR) and external dose rate percentage (EDR%) with I-131 administration time.
Assessment of related factors such as I-131 dose, sex, BMI, cancer pathology, medical history, and thyroid function.
EDR% showed a better correlation with I-131 administration time than EDR.
Identified factors influencing dose rate include I-131 dose, sex, BMI, thyroid cancer pathology, medical history, and thyroid function.

Abstract

EDR% had better correlation than EDR with I-131 administration time. The related factors for SI and SI% included I-131 dose, sex, BMI, thyroid cancer pathology, medical history and thyroid function. These findings provide a reference for radiation protection officers in evaluating radioactive activity during I-131 therapy.

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