Sentence examples for mean linear attenuation from inspiring English sources
k is the gamma-camera sensitivity, and μ is the mean linear attenuation coefficient for 177Lu.
In a voxel with average linear attenuation coefficient μ x, the corresponding HU value is given by: HU = 1000 × (μ x - μwater)/μwater - μair where μwater and μair are the linear attenuation coefficients of water and air; i.e., attenuation values expressed in HU are relative to the attenuation of radiation in water.
The mean of the transmission values (linear attenuation coefficients) of the mediastinal blood pool and normal lung in 10 subjects were 0.1 and 0.03 (cm−1), respectively.
The first term C θ, ϕ (PTV) is determined by the following equation: (5) C θ, ϕ (PTV ) = 1 − exp (− μ d θ, ϕ (PTV ) ), where μ is a linear attenuation coefficient in water, and d θ, ϕ (PTV) is the mean depth in cm from the body surface to the PTV surface.
Linear attenuation coefficients were 0.095 cm−1 for water and 0.026 cm−1 for the lung insert (same as the mean attenuation values derived from the low-dose CT scan used for AC of mCT data).
It has been observed that among the selected concretes, steel magnetite offers maximum value for linear attenuation coefficient, mass attenuation coefficient, equivalent atomic number and least values in terms of penetration depth equivalent to mean free path and exposure buildup factors.
T lung = linear attenuation coefficient of lung (cm−1).
T med = linear attenuation coefficient of mediastinum (cm−1).
Moreover, attenuation was not performed because attenuation correction using a linear attenuation coefficient of radionuclides other than for clinically relevant radionuclides is challenging.
After image reconstruction, relative values of linear attenuation coefficient are stored for each voxel.
