School of Radiological Technology;
Gunma Prefectural College of Health Sciences;
Gunma;
Japan;
Department of Radiological Technology;
Graduate School of Health Sciences;
Niigata University;
Niigata;
Japan;
Department of Radiological Technology;
Faculty of Fukuoka Medical Technology;
Teikyo University;
Fukuoka;
Japan;
Radiation; Dose; Image; Quality; Image; Processing; Noise; Reduction; Wavelet; Transforms;