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An improved nonlinear diffusion in Laplacian pyramid domain for cone beam CT denoising during image-guided vascular intervention

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Figure

Fig. 1 Outline of the proposed LPMND method
Fig. 2 The nonlinear diffusion models. a PM model, b MND model
Fig. 4 Performs of PM and the MND processes on a ramp edge. a Original (top) and noisy ramp signal (bottom), b denoised signal from PMprocess (blue line) and the proposed MND process (red line) with 10, 50, 100 iterations from top to bottom, respectively
Fig. 7 CBCT images reconstructed by FDK for digital phantom. a Clean CBCT image (as the reference image), b noisy CBCT image
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