Dose-conditioned networks trained on the photon-thinning bridge, whose forward process removes detected photons by binomial thinning, so every state of the process is distributed as a scan acquired at a lower dose. One checkpoint covers a calibrated range of doses: the network takes a low-dose reconstruction together with the dose coordinate t and predicts the full-dose image. bridge2detect.pt and bridgeldct.pt produce the simulated-dose results of the paper; bridgeldct.pt is also the model evaluated on the official Mayo reduced-dose projections. bridge2detectfano.pt is trained at the Fano-corrected effective counts Ieff = I0 / F and is the model evaluated on the 3.3%-current 2DeteCT scans.…
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Shiyu Xie
shiyuxie
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