Improved Cone Beam Local Tomography

Thursday, January 12, 2006 - 9:45am - 10:30am
EE/CS 3-180
Alexander Katsevich (University of Central Florida)
A new local tomography function g is proposed. It is shown that g still
contains non-local artifacts, but their level is an order of magnitude
smaller than those of the previously known local tomography function. We
also investigate local tomography reconstruction in the dynamic case, i.e.
when the object f being scanned is undergoing some changes during the scan.
Properties of g are studied, the notion of visible singularities is suitably
generalized, and a relationship between the wave fronts of f and g is
established. It is shown that the changes in f do not cause any smearing of
the singularities of g. Results of numerical experiments are presented.
MSC Code: