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Linear Attenuation Coefficients for Phantom Materials Simulating Soft Tissue:

Linear Attenuation Coefficients for Phantom Materials Simulating Soft Tissue: FROM THE DEPARTMENTS OF DIAGNOSTIC RADIOLOGY (DIRECTOR: PROF. H. LO­ DIN) AND RADIOPHYSICS (DIRECTOR: J. CEDERLUND), AKADEMISKA SJUKHUSET, UPPSALA UNIVERSITY, 75014 UPPSALA, SWEDEN. LINEAR ATTENUATION COEFFICIENTS FOR PHANTOM MATERIALS SIMULATING SOFT TISSUE A. HEMMINGS SON and B. JUNG Durable solid anatomic phantoms are often needed when roentgen diagnostic methods are evaluated experimentally. The radiophysical properties of the phantom should, as closely as possible, agree with those of human tissue as regards attenuation of photons of diagnostically important energies. In a material consisting of light elements, simulating human soft tissue, photons within the energy interval 10 keV to 1.5 MeV interact by coherent scattering, photoelectric effect and Compton scattering. The relative importance of the three processes depends on the photon energy (d. e.g. ATTIX & ROESCH 1968) . The linear attenuation coefficient for the Compton process is determined by the electron density of the material. The coefficients for the photoelectric effect and for coherent scattering depend on the electron density but also on the atomic numbers of the elements in the material. The radiophysical properties of a phantom material can therefore be described by its chemical composition and electron density or mass density (SPIERS 1943, 1946, MARKUS 1956, W,EBER & http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Radiologica. Diagnosis SAGE

Linear Attenuation Coefficients for Phantom Materials Simulating Soft Tissue:

Hemmingsson, A.; Jung, B.
Acta Radiologica. Diagnosis , Volume 14 (3): 4 – Aug 30, 2016
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References (10)

Publisher
SAGE
Copyright
Copyright © 2019 by The Foundation Acta Radiologica
ISSN
0567-8056
eISSN
ISSN: 0567-8056
DOI
10.1177/028418517301400309
Publisher site
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Abstract

FROM THE DEPARTMENTS OF DIAGNOSTIC RADIOLOGY (DIRECTOR: PROF. H. LO­ DIN) AND RADIOPHYSICS (DIRECTOR: J. CEDERLUND), AKADEMISKA SJUKHUSET, UPPSALA UNIVERSITY, 75014 UPPSALA, SWEDEN. LINEAR ATTENUATION COEFFICIENTS FOR PHANTOM MATERIALS SIMULATING SOFT TISSUE A. HEMMINGS SON and B. JUNG Durable solid anatomic phantoms are often needed when roentgen diagnostic methods are evaluated experimentally. The radiophysical properties of the phantom should, as closely as possible, agree with those of human tissue as regards attenuation of photons of diagnostically important energies. In a material consisting of light elements, simulating human soft tissue, photons within the energy interval 10 keV to 1.5 MeV interact by coherent scattering, photoelectric effect and Compton scattering. The relative importance of the three processes depends on the photon energy (d. e.g. ATTIX & ROESCH 1968) . The linear attenuation coefficient for the Compton process is determined by the electron density of the material. The coefficients for the photoelectric effect and for coherent scattering depend on the electron density but also on the atomic numbers of the elements in the material. The radiophysical properties of a phantom material can therefore be described by its chemical composition and electron density or mass density (SPIERS 1943, 1946, MARKUS 1956, W,EBER &

Journal

Acta Radiologica. Diagnosis – SAGE

Published: Aug 30, 2016

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