Reducing Noises and Artifacts Simultaneously of Low-Dosed X-Ray Computed Tomography Using Bilateral Filter Weighted by Gaussian Filtered Sinogram

<table>Abdominal CT images of a 58-year-old man. (a) Original SDCT image with tube current time product 150 mAs. (b) Original LDCT image with tube current time product 30 mAs. (c, d, e, f) BF, context, MBF, and MRBF processed LDCT images, respectively. (g) WIA-LN processed LDCT image. (h) Proposed method (BFWGFS) processed LDCT image. Note the obvious improvement of noise suppression and preservation of the intrahepatic bile duct dilatation (white circles) for the WIA-LN and proposed method processed LDCT images (g, h) compared to the original LDCT image in (b).</table>

Mathematical Problems in Engineering

fig1

Figure 1

Figure 1: Reducing Noises and Artifacts Simultaneously of Low-Dosed X-Ray Computed Tomography Using Bilateral Filter Weighted by Gaussian Filtered Sinogram 

Figure 1 | Reducing Noises and Artifacts Simultaneously of Low-Dosed X-Ray Computed Tomography Using Bilateral Filter Weighted by Gaussian Filtered Sinogram 