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Derivation of the extended fan-beam formula

, : Derivation of the extended fan-beam formula. IEEE Transactions on Medical Imaging 4(4): 177-184

The fan-beam tomographic reconstruction formulas that have previously appeared in the literature have been restricted to the case where the source points are situated on a circle. This paper extends the fan-beam formula to "curves of source points" other than a circle of source points (e.g., a straight line or a hexagon). In the derivation new mathematical techniques are presented. For both the straight line and the hexagon a discrete version of the "extended" formula is developed.


PMID: 18243969

DOI: 10.1109/TMI.1985.4307720

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