Electromagnetic Radiation Knowledge, Risk Awareness, and Shielding Practices of South Korean Occupational Therapists During Videofluoroscopic Swallowing Study: A Survey study

The videofluoroscopic swallowing study (VFSS) based on electromagnetic radiation is an instrumental test for diagnosing and rehabilitating dysphagia that is performed by many occupational therapists (OTs) in South Korea. This study aimed to investigate current electromagnetic radiation knowledge, risk awareness, and shielding practices of OTs performing VFSS and to identify educational experience on radiation protection. An online survey was conducted from April 2019 to June 2022, and a total of 69 responses were used for analysis. The mean correct score of 'Radiation Knowledge' was 3.24 +/- 1.98 (out of 10). Mean scores of 'Risk Awareness' and 'Shielding Practice' were 2.18 +/- 0.53 and 3.02 +/- 0.74 (out of 5), respectively. Multiple regression analyses revealed that radiation knowledge (beta = 0.292, p = 0.012) and risk awareness (beta = 0.495, p < 0.001) were significant factors associated with shielding practices. Ninety-five percent of respondents had no radiation-related educational experience, and 83% reported that the reason for not participating was due to a lack of educational opportunities.