The possibility to visualize pathological tissues for example tumor neo-angiogenesis pattern-, using new X-ray imaging technique (such as Multi-Energy subtraction X-ray Imaging) is strictly related to an accurate knowledge of the X-ray absorption coefficients. Unfortunately, |i(E) values are partially derived from Monte Carlo simulation and known only for a little number of pathologies. A study of the attenuation properties of tissues was started at the University of Bologna in order to experimentally investigate their proprieties. Tissues X-ray attenuation curves are measured in a facility based on a Bragg monochromator with a lithium-fluoride crystal, to have beams with X-ray energies from 10 keV to 60 keV and energy resolution less than 2.0 keV. Different methods of analysis are implemented, starting from algorithms that can extract chemical-physical information from X-ray absorption measurements, such as effective atomic number and electron density. © 2008 IEEE.
Characterization of Biological Tissues using X-ray Attenuation Data / G. Baldazzi; P. L. Rossi; S. Masetti; A. Turco; M. Fiaschetti; N. Lanconelli; D. Bianchini; L. Roma; G. Nicoletti; P. L. Lollini. - ELETTRONICO. - NSS/MIC 2008:(2008), pp. 4774316.4798-4774316.4802. (Intervento presentato al convegno IEEE Nuclear Science Symposium & Medical Imaging Conference tenutosi a Dresden, Germany nel 9-25 Oct. 2008) [10.1109/NSSMIC.2008.4774316].
Characterization of Biological Tissues using X-ray Attenuation Data
BALDAZZI, GIUSEPPE;ROSSI, PIER LUCA;MASETTI, SIMONE;LANCONELLI, NICO;BIANCHINI, DAVID;NICOLETTI, GIORDANO;LOLLINI, PIER LUIGI;Turco, A.;Roma, L.
2008
Abstract
The possibility to visualize pathological tissues for example tumor neo-angiogenesis pattern-, using new X-ray imaging technique (such as Multi-Energy subtraction X-ray Imaging) is strictly related to an accurate knowledge of the X-ray absorption coefficients. Unfortunately, |i(E) values are partially derived from Monte Carlo simulation and known only for a little number of pathologies. A study of the attenuation properties of tissues was started at the University of Bologna in order to experimentally investigate their proprieties. Tissues X-ray attenuation curves are measured in a facility based on a Bragg monochromator with a lithium-fluoride crystal, to have beams with X-ray energies from 10 keV to 60 keV and energy resolution less than 2.0 keV. Different methods of analysis are implemented, starting from algorithms that can extract chemical-physical information from X-ray absorption measurements, such as effective atomic number and electron density. © 2008 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
