Efficient sampling in helical CT

echantillonage deux
We have proposed efficient sampling schemes for parallel and fan-beam helical tomography. In parallel geometries we have shown that projection numbers can be reduced by the quarter detector offset and a judicious choice of the helical pitch.


L. Desbat, S. Roux, P. Grangeat, and A. Koenig. Sampling conditions of 3D Parallel and Fan-Beam X-ray CT with application to helical tomography. Phys. Med. Biol., 49(11), 2377-2390, 2004.

Collaborations : CEA Grenoble (Pierre Grangeat, Anne Koennig)

Status and perspectives: we work on exploiting symmetries of the fan beam geometry and conical geometries.

More information: http://www-timc.imag.fr/Laurent.Desbat/

Contact : laurent.desbat@imag.fr

Laboratoire TIMC-IMAG, Domaine de la Merci, 38706 La Tronche Cedex

Grenoble INP
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