Radiation dose determination using MOSFET and RPL dosimeters in x-ray imaging
Thesis event information
Date and time of the thesis defence
Place of the thesis defence
Auditorium 7, Oulu University Hospital
Topic of the dissertation
Radiation dose determination using MOSFET and RPL dosimeters in x-ray imaging
Doctoral candidate
Master of Science Antti Kotiaho
Faculty and unit
University of Oulu Graduate School, Faculty of Medicine, Research unit of medical imaging, physics and technology
Subject of study
Medical physics
Opponent
Docent Paula Toroi, Section of Dosimetry and Medical Radiation Physics; International Atomic Energy Agency
Custos
Professor Miika Nieminen, Research unit of medical imaging, physics and technology; University of Oulu
Radiation dose determination using MOSFET and RPL dosimeters in x-ray imaging
In this thesis, the properties and applicability of two different dosimeters were evaluated in medical x-ray imaging. The investigated radiation dose reduction methods were observed to be useful in everyday work. X-ray imaging utilizes ionizing radiation and therefore its use must always be justified and optimized due to possible adverse effects. There are multiple sources of uncertainties in x-ray radiation measurements which set limitations on the suitability of different dosimeters. Here, two different dose reduction methods were investigated in computed tomography and dental panoramic tomography. These methods were found useful as long as their limitations and proper use are considered.
Last updated: 1.3.2023