Find the SNR of the CT reconstruction of a lesion immersed in a 20-cm (diameter) c...

Find the SNR of the CT reconstruction of a lesion immersed in a 20-cm (diameter) cylinder of water whose attenuation coefficient is 5% different than that of the water. A scanned source is used providing 100 projections at 0.1 R (roentgen) per projection. The detector and beam dimensions are 2.0 × 2.0 mm. make appropriate assumptions about the reconstruction filter. Assume and that the detectors are touching each other. Also assume that there are 2.5 × 10¹⁰ photons/cm² per roentgen.