ASSESSMENT OF THE KNOWLEDGE OF THYROID SHIELD USAGE AMONG FINAL YEAR RADIOGRAPHY STUDENTS AT THE UNIVERSITY OF BENIN

Thyroid shields are protective devices used in radiography to reduce exposure of the thyroid gland to ionizing radiation. The thyroid is a radiosensitive organ, and shielding it is an important radiation protection practice. However, despite its importance, the consistent use of thyroid shields by radiography students is not always emphasized in training institutions in Nigeria. This study aimed to evaluate the level of knowledge among final-year radiography students regarding the use of thyroid shields at the University of Benin. A descriptive cross-sectional study design was adopted, involving 94 final-year radiography students. Data were collected using a structured self-administered questionnaire. The questionnaire assessed demographic characteristics, knowledge of thyroid anatomy and radiation sensitivity, knowledge of thyroid shield usage, and awareness of institutional practices regarding radiation protection. The collected data were coded and analyzed using descriptive statistics and Spearman’s rank correlation to determine the relationship between different knowledge domains. The results showed that students had high theoretical knowledge of thyroid anatomy and radiation sensitivity, with 91.5% correct responses. However, only 25.5% reported applying thyroid shields during practical radiographic proceduresKnowledge of proper shield usage showed a moderate positive correlation with knowledge of thyroid anatomy and radiation sensitivity (r = 0.465, p = 0.000). Additionally, institutional support was very limited, with fewer than 2% of students reporting the availability of thyroid shields or formal training on their use. Although students demonstrated strong theoretical understanding, their practical application of thyroid shields remains inadequate. Improving hands-on training, increasing access to protective equipment, and implementing formal radiation safety policies are recommended to bridge the gap between knowledge and practice. Keywords: Thyroid shields, protective devices, radiosensitive organ, Spearman’s rank correlation.