Image receptor homogeneity with variance

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IQI Deviation VAR ROIs.png
IQI Deviation VAR ROIs legend.png


$ VARRatio_i= \frac{Var_i}{max_j (Var_{ij})} $

where:

  • $ Var_i $: the variance of the i-th ROI
  • $ Var_{ij} $: the variance of the j-th neighbouring ROIs of the i-th ROI