ABSTRACT

Modern medical imaging technology such as computed tomography (CT), fluoroscopy, mammography, and bone density measurement are very important for early diagnosis of diseases and treatment follow-up. However, patient safety and radiation dose management are essential for these devices that use ionising radiation. While dose units such as Gray and sievert are used as dose determination and exposure indicators in radiology, parameters such as skin entrance dose, dose area product, cumulative air kerma, mean glandular dose, dose length product, and CT dose index serve as critical indicators of patient exposure. These indicators play an important role in increasing patient safety and reducing adverse radiobiological effects, especially in diagnostic technologies that involve high radiation. In this study, dose units used in determining patient exposure in diagnosis and treatment follow-ups involving ionising radiation and radiation parameters used in evaluating patient irradiation in examinations will be reviewed.