Determination of the Radiation Dose Level in Different Slice Computerized Tomography

Abstract

Today, many imaging tools have emerged in the
medical field using ionizing radiation. Computed tomography (CT) is regarded
the most creative and common modality among the other imaging
devices. In CT imaging, radiation may scatter to the environment from the
patient and the interaction medium. In this study, two CT scanners with
different slice numbers were used
to measure the scatter radiation dose to the
environment. Alderson rando phantom was utilized in the acquired CT exams as
human body simulation. Radiation dose levels at different distances were
determined by placing thermoluminescence dosimeters in the surrounding
environment (at different distances) during phantom’s head-neck and thorax CT
imaging. As a result, it
has been found that the radiation dose varies
between 13.90±1.96 µSv and 96.79±11.12 µSv in head and neck CT imaging. While,
in thorax CT scan, the
radiation dose varies between 5.28±0.84 µSv and 20.63±1.76 µSv.