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Copyright ©2014 Baishideng Publishing Group Inc.
World J Radiol. Nov 28, 2014; 6(11): 855-864
Published online Nov 28, 2014. doi: 10.4329/wjr.v6.i11.855
Figure 3
Figure 3 Sampling and material dependent noise models. Sampling noise model assumes that each tissue type is represented by a single average value and Gaussian-distributed noise is then added. Material dependent noise model assumes that the tissue types are represented by random variables. CSF: Cerebro-spinal fluid; GM: Gray matter; WM: White matter.