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Bar plots representing Spearman’s ρ (y-axis) of visual emphysema scores of three readers on axial, multiplanar (MRP) and color-coded (CC) images and measured perfusion percent with scintigraphy per lung location. URZ, upper right zone; ULZ, upper left zone; MRZ, middle right zone; MLZ, middle left zone; LRZ, lower right zone; LLZ, lower left zone.
