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Cone-beam reconstruction from general discrete vertex sets

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3 Author(s)
Noo, F. ; Liege Univ., Belgium ; Clack, R. ; Defrise, M.

Addresses the issue of reconstruction of a 3D image from cone-beam projections measured for an arbitrary discrete set of vertex points. "Vertex point" refers to the position of the X-ray source in area CT or to the focal point of the CB collimator in SPECT imaging. The problem of defining a practical data sufficiency condition is investigated and a parameter ε0 is defined to describe how close a discrete vertex set comes to satisfying Tuy's condition. A reconstruction algorithm based on the Radon rebinning method is presented which is capable of near-optimal reconstructions from any discrete vertex set, whether or not it represents a sampled vertex path

Published in:

Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE  (Volume:3 )

Date of Conference:

2-9 Nov 1996