PROGRAM SUMMARY
Title of program:
ScatterTomo version 1.1
Catalogue identifier:
ADPH
Ref. in CPC:
141(2001)412
Distribution format: tar gzip file
Operating system: Linux Red Hat 7.1, Windows 98, NT, 2000
Number of lines in distributed program, including test data, etc:
2435
Keywords:
Tomography, Fluorescence, Compton, Reconstruction algorithm,
Atomic physics, Experiment, Scattering, Photon.
Programming language used: C
Nature of physical problem:
Tomographic reconstruction based on fluorescent or scattered radiation.
Method of solution:
Based on the Hogan et al. algorithm [1]. The input data-set is
represented by a complete set of fluorescence projections at equidistant
angles over the full angular range of 180 or 360 degrees. The latter
choice allows a better correction when self-absorption effects are
relevant. Partial view measurements are not allowed. The entrance
window of the detector is assumed to be perpendicular to the direction
of the X-ray beam. In addition to the fluorescence tomography data, the
spatial distribution of the absorption coefficient needs to be known
both for the beam energy and for the fluorescence energy. In order to
obtain these distributions, two transmission tomographies must be
performed at those two energies. Alternatively, the absorption
coefficient maps can be calculated based on an adequate model of the
sample.
The program has been successfully compiled and tested with the GNU C
Compiler gcc version 2.96-81 on Linux Red Hat 7.1, and with the Borland
C++ Compiler version 5.5 on Windows 98, NT, 2000. It should work on any
operating system with a standard C compiler.
References:
[1] J.P. Hogan, R.A. Gonsalves, A.S. Krieger, Fluorescent computer
tomography: a model for correction of X-ray absorption, IEEE Trans.
Nucl. Sci. 38 (1991) 1721-1727.