Few-View Prereconstruction Guided Tube Current Modulation Strategy Based on the Signal-to-Noise Ratio of the Sinogram

Figure 2

The thorax phantom and the sinogram used for the determination of the weight factors. (a) The thorax phantom; (b) the prereconstruction using 16-view projections; (c) the estimated sinogram using the prereconstruction ; (d) the difference image ; (e) the estimated sinogram by interpolation ; (f) the difference image . The display windows are set to for (a) and (b), for (c) and (e), and for (d) and (f).

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