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

Figure 4

The comparisons of the reconstructions using different strategies with the thorax phantom. Reconstructions using a constant current and interpolation based strategy and the proposed strategy are shown in (a)–(c). The corresponding difference images from the phantom are presented in (d)–(f), respectively. The display windows are set to for (a)–(c) and for (d)–(f).

(a)

(b)

(c)

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(f)