Morgan H M, Shakeshaft J T, Lillicrap S C
Medical Physics Department, Royal United Hospital, Combe Park, Bath, U.K.
Appl Radiat Isot. 1998 May-Jun;49(5-6):555-7. doi: 10.1016/s0969-8043(97)00186-3.
The purpose of this study was to examine the potential of using backscatter information to assess regional body composition at selected sites. Two measurement techniques are examined: the measurement of the ratio of coherent to Compton scatter, and the measurement of the Compton scatter profile. Two possible applications are considered: the measurement of trabecular bone mineral density, and the measurement of the average fat/muscle ratio in a tissue volume. The results presented indicate that the analysis of coherent and Compton backscattered gamma-ray spectra from an 241Am source has the potential for measuring both trabecular bone mineral density and average fat/muscle ratio in a tissue volume, with a low absorbed dose to the subject.
本研究的目的是检验利用背散射信息评估选定部位区域身体成分的潜力。研究了两种测量技术：相干散射与康普顿散射比值的测量，以及康普顿散射剖面的测量。考虑了两种可能的应用：小梁骨矿物质密度的测量，以及组织体积中平均脂肪/肌肉比值的测量。所呈现的结果表明，分析来自241Am源的相干和康普顿背散射伽马射线光谱，有潜力测量小梁骨矿物质密度和组织体积中的平均脂肪/肌肉比值，且受检者的吸收剂量较低。
