Measurement of attenuation coefficients for bone, muscle, fat and water at 140, 364 and 662keV -ray energies

• DOI: 10.1016/j.jqsrt.2006.02.007
• Publication Date: 2006-03-10T14:50:21Z
• Authors: A. Akar; H. Baltaş; U. Çevik; F. Korkmaz; N.T. Okumuşoğlu
• Keywords: Mass attenuation coefficient

Abstract The half-value thicknesses, linear and mass attenuation coefficients of biological samples such as bone, muscle, fat and water have been measured at 140, 364 and 662 keV γ -ray energies by using the ATOMLABTM-930 medical spectrometer. The γ -rays were obtained from 99mTc, 131I and 137Cs γ -ray point sources. Also theoretical calculations have been performed in order to obtain the half-value thicknesses and, mass and linear attenuation coefficients at photon energies 0.001 keV–20 MeV for bone, muscle and water samples. The calculated value and the experimental results of this work and the other results in literature are found to be in good agreement.