Evaluasi Pengetahuan Proteksi Radiasi dan Parameter Pencitraan CT Scan yang Berhubungan dengan Dosis Pasien pada Radiografer dan Fisikawan Medik

Abstract

The knowledge of all personnel who take part in a CT scan examination is needed to ensure optimization. Therefore, every CT scan examination can enforce the ALARA principle optimally. The purpose of this study was to evaluate the level of knowledge of medical physicists and radiographers regarding the procedures for using CT scans (radiation protection aspects and image parameters). This study used Google Forms to conduct a questionnaire survey aimed at medical physicists and radiographers. Questionnaires consist of 2 types, namely in the form of yes or no questions (0 for no and 1 for yes) and Likert questions (scale 1-4). The survey results were then statistically tested using SPSS version 25.0 software: validity, reliability, and independence Pearson chi-square test. 33 (66%) radiographers and 17 (34%) medical physicists were the respondents of this study. The questionnaire instrument was declared valid (with a significance P <0.05) and consistent with Cronbach's Alpha values (.651, .802 and .811). Radiographers and medical physicists understand the basics of radiation protection very well, with percentages of 69.7% and 88.2%, respectively. The knowledge level of image parameters with perfect criteria for radiographers and medical physicists is 57.6% and 88.2%. The Pearson chi-square test of independence found no significant relationship between knowledge of radiation protection and image parameters on recent education with P(.461 and .594) and the relationship between knowledge of protection and length of work experience with P(.285). Limited participants and questionnaire instruments caused it. However, a significant relationship exists between knowledge of image parameters and length of work experience with P(.018). Along with the limited number of respondents and questions on the questionnaire, there is a significant relationship between knowledge of image parameters and length of work experience in this study. Keywords: personnel knowledge, radiation protection, image parameters, radiographers, and medical physicists