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Direct estimation of dynamic parameters in SPECT tomography

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4 Author(s)

This paper solves the problem of estimating dynamic parameters of SPECT reconstruction directly from the projections. This is done by spanning the dynamic parameters of each pixel with a basis of exponentials. Any time decay system can be modeled in this way. This process leads to a linear Fredholm integral equation of the first kind which is discretized and then solved with conjugate gradient methods. We tested our algorithm by applying it to a numerical phantom and to a simple real phantom

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Nuclear Science, IEEE Transactions on  (Volume:44 ,  Issue: 6 )