Results 241 to 250 of about 226,375 (294)

Linear attenuation coefficients for compensator based imrt

Australasian Physics & Engineering Sciences in Medicine, 2007
With rapid technological improvements in computer driven 3-D radiotherapy treatment planning systems (RTPS) the use of compensating filters for intensity modulated radiation therapy (IMRT) will dramatically increase the ease of treatment. The procedure for commissioning .decimal (Sanford, Florida) compensators involved the measurement of the effective ...
T, Bartrum   +3 more
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Calculation of Linear Attenuation Coefficients of Algerian Silica Sand (ASS)

Advanced Science, Engineering and Medicine, 2020
Radiation is an important phoneme and thus radiation shielding is one of the most popular subjects for researchers. Sand is the main materials to produce besides many things also construction materials. It may also be used as a decorative material and therefore it is important to know its radiation shielding parameters.
Iskender Akkurt   +2 more
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Ultrasonic computed tomography reconstruction of the attenuation coefficient using a linear array

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005
The attenuation coefficient distribution and sound velocity distribution in the breast can be used to complement B-mode ultrasound imaging in the detection of breast cancer. This study investigated an approach for reconstructing the attenuation coefficient distribution in the breast using a linear array.
Huang, Sheng-Wen, Li, Pai-Chi
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A parameterization scheme for the x-ray linear attenuation coefficient and energy absorption coefficient

Physics in Medicine and Biology, 2004
A novel parameterization of x-ray interaction cross-sections is developed, and employed to describe the x-ray linear attenuation coefficient and mass energy absorption coefficient for both elements and mixtures. The new parameterization scheme addresses the Z-dependence of elemental cross-sections (per electron) using a simple function of atomic number,
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Linear attenuation coefficients of tissues from 1keV to 150keV

Radiation Physics and Chemistry, 2014
Abstract The linear attenuation coefficients and three interaction processes have been computed for liver, kidney, muscle, fat and for a range of x-ray energies from 1 keV to 150 keV. Molecular photoelectric absorption cross sections were calculated from atomic cross section data.
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Near K-edge linear attenuation coefficients for Si, SiO2 and Si3N4

Radiation Physics and Chemistry, 2002
Abstract We present tabulated near K-edge linear attenuation coefficients for a range of materials commonly used in MOS construction; namely, crystalline silicon (Si-c), amorphous silicon (Si-a), amorphous silicon dioxide (SiO 2 -a) and amorphous silicon nitride (Si 3 N 4 -a).
Alan Owens, G.W Fraser, S.J Gurman
openaire   +1 more source

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