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. 2013 Dec 23;8:294. doi: 10.1186/1748-717X-8-294

Figure 3.

Figure 3

The Shannon informational entropy ( S ) of each 15-bit grayscale intensity histogram is seen to depend monotonically upon tumor volume ( V ) across a wide range of volumes. It is thus seen that by using increasing S values to rank tumors in increasing heterogeneity, one actually is ranking those tumors coarsely in terms of volume. The age of the patients in years is indicated by color.