Figure 3
From: Masked smoothing using separable kernels for CT perfusion images
Image slice from phantom study: raw, mean, and smoothed images. Top left image is a slice from the first of 30 image volumes. Top right image is the mean of the same slice across all image volumes. Lower left image is the same slice as the upper left but with Gaussian smoothing applied. Lower right image is the same slice as the upper left but with Masked Smoothing applied.