Fig. 8
From: A sinogram denoising algorithm for low-dose computed tomography
A slice of the image of the rat reconstructed from noisy and denoised projections: a the reference image, b without denoising, c bilateral filtering, d NL-PCA, and e the proposed algorithm. The locations of the selected ROIs have been marked on the reference image (a). This slice is through the thorax just below the carina (where the trachea divides into left and right bronchi)