A new approach towards simultaneous activity and attenuation reconstruction in emission tomography
نویسندگان
چکیده
In single photon emission computed tomography (SPECT) one is interested in reconstructing the activity distribution f of some radiopharmaceutical. The data gathered suffer from attenuation due to the tissue density μ. Each imaged slice incorporates noisy sample values of the nonlinear attenuated Radon transform A(f,μ)(ω, s) = ∫ ∞ −∞ f (sω⊥ + tω) exp (
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تاریخ انتشار 1999