coefficientRadioactivityThe 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 ...
What is the attenuation coefficient of bone? The mass attenuation coefficient of bone with a density of 1.8 g/cm3, is0.2 cm2/gfor an 80-keV gamma ray. What is the attenuation coefficient of water? theoretical value of the mass attenuation coefficient of water at 59.54 keV isabout 47.0%for...
The loss of ultrasound energy as it travels through a medium (such as tissue) is called attenuation. The loss of ultrasound energy is expressed as change in ultrasound intensity. ... Therate of attenuationis called the attenuation coefficient. What is the attenuation coefficient of bone? The ma...
X-ray attenuation of bone, soft and adipose tissue in CT from 70 to 140 kV and comparison with 3D printable additive manufacturing materials Download PDF Article Open access Published: 26 August 2022 X-ray attenuation of bone, soft and adipose tissue in CT from 70 to 140 kV and ...
Linear attenuation coefficient HU: Hounsfield unit References Thorwarth D, Leibfarth S, Mönnich D. Potential role of PET/MRI in radiotherapy treatment planning. Clin Transl Imaging. 2013;1(1):45–51. Article Google Scholar Gillies RJ, Beyer T. PET and MRI: is the whole greater than...
Attenuation coefficientBackscatter coefficientBone volume fractionTrabecular thicknessThe present study aims to investigate the dependences of the attenuation and the backscatter coefficients on the frequency, the bone volume fraction (BV/TV) and the trabecular thickness (Tb.Th) in 16 trabecular-bone-...
In short, the bulk method is based on registration of a CT template, to create a specific mask in the sinus region to assign a fixed attenuation coefficient of 0.100 cm−1 for that region. The drawback of the method is that it needs an additional registration of a CT-based ...
Rafiei et al.[3] have evaluated the mass attenuation coefficient of water and ten human tissues at 100 eV–1 keV using Monte Carlo simulation in MCNP6.1 and XCOM calculations. The MAC calculated through both methods was consistent with a relative difference of less than 0.1%. Furthermore, th...
J. (1980) Kinetic of the exchange of protons between hydrogen phosphate ions and a histidyl residue.J. Phys. Chem.,84, 1325–1329. Article Google Scholar Tervola, K. M. U., Foster, S. G. andO’Brien, W. D. Jr. (1985a) Attenuation coefficient measurement technique at 100 MHz with...
Ultrasonic attenuation coefficient of the spray-atomized and co-deposited 6061Al/SiCp composite; 用超声衰减法研究喷射沉积6061Al/SiCp复合材料的阻尼性能 3. Ultrasonic attenuation technique is used to investigate a method to measure mass concentration of paper fibers in dilute pulp suspensions. 采用超声...