title: OPTIMAL BETA-RAY SHIELDING THICKNESSES FOR DIFFERENT THERAPEUTIC RADIONUCLIDES AND SHIELDING MATERIALS.
abstract: To better understand the distribution of deposited energy of beta and gamma rays according to changes in shielding materials and thicknesses when radionuclides are used for therapeutic nuclear medicine, a simulation was conducted. The results showed that due to the physical characteristics of each therapeutic radionuclide, the thicknesses of shielding materials at which beta-ray shielding takes place varied. Additional analysis of the shielding of gamma ray was conducted for radionuclides that emit both beta and gamma rays simultaneously with results showing shielding effects proportional to the atomic number and density of the shielding materials. Also, analysis of bremsstrahlung emission after beta-ray interactions in the simulation revealed that the occurrence of bremsstrahlung was relatively lower than theoretically calculated and varied depending on different radionuclides.
authors.affiliation: Department of Nuclear Medicine, Dongnam institute of Radiological & Medical Science, 40, Jwadong-gil, Jangan-eup, Gijang-gun, Busan, Republic of Korea.
authors.forename: Yong In
authors.initials: YI
authors.lastname: Cho
authors.affiliation: Major of Computer Science Education, Graduate School of Education, Korea University, 145, Anam-ro, Seoul, Republic of Korea.
authors.forename: Ja Mee
authors.initials: JM
authors.lastname: Kim
authors.affiliation: Dept. of Radiological Science, College of Health Sciences, Catholic University of Pusan, 57, Oryundae-ro, Geumjeong-gu, Busan, Republic of Korea.
authors.forename: Jung Hoon
authors.initials: JH
authors.lastname: Kim
mesh_terms: D001610:Beta Particles; D005720:Gamma Rays; D006801:Humans; D011482:Protective Devices; D011835:Radiation Protection; D011868:Radioisotopes
chemical_list: D011868:Radioisotopes