Since 1978
Published in Sarov (Arzamas-16), Nizhegorodskaya oblast

RUSSIAN FEDERAL
NUCLEAR CENTER -
ALL-RUSSIAN RESEARCH INSTITUTE
OF EXPERIMENTAL PHYSICS
 
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THE INTEGRAL IMAGE RECONSTRUCTION ALGORITHM FOR TOMOGRAPHY

E. N. Simonov
VANT. Ser.: Mat. Mod. Fiz. Proc 2004. Вып.3. С. 31-43.

The image reconstruction algorithms for transmission X-ray tomography are classified. Integral methods of image reconstruction in projections are discussed.
The practical image reconstruction algorithms have been developed using the method of deprojection with convolution filtration for fan scanning geometry with a large number of counts in projection (more than 512) and image matrix 512 eq 512 and more which have been implemented for the domestic X-ray computer-aided tomograph RKT-01 designed for examination of the whole human body.



SIMULATION PROBLEMS IN X-RAY COMPUTER-AIDED TOMOGRAPHY

E. N. Simonov
VANT. Ser.: Mat. Mod. Fiz. Proc 2004. Вып.3. С. 44-53.

Numerical simulation was carried out to study the dependence of the quality of tomographic images on a) the number of perspectives and detectors (counts in projection); b) the level of noise in the measurement and projection data; c) instability of the X-ray photon flux from a radiation source; d) fluctuation of perspectives and detector coordinates; and e) the X-ray radiation spectrum.
The numerical simulation resulted in determination of admissible variability of the above-mentioned factors and also the design requirements to units and systems of the domestic X-ray computer-aided tomograph RKT-01 having a fan radiation beam and a continuous line of single xenon detectors and intended for examination of the whole human body have been specified.










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