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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: J Thorac Imaging. 2019 Sep;34(5):313–319. doi: 10.1097/RTI.0000000000000334

Table 3.

CALIPER characteristics by lung zone. Data presented as percent volume by median with interquartile range. P values calculated by Wilcoxon Rank Sum.

Cases (n = 54) Controls (n = 19) P

Right upper anterior lung zone
 % ground glass 0% (0 – 3.6) 0% (0 – 0) 0.002
 % reticular 0% (0 – 1.2) 0% (0 – 0) 0.003
 % honeycomb 0% (0 – 0) 0% (0 – 0) 0.553
 % ILA 0% (0 – 8.7) 0 (0 – 0) 0.001
 % normal 99.9% (87.1 – 100) 90.3% (74.2 – 98.9) 0.014

Right lower lateral lung zone
 % ground glass 24.9% (5.3 – 66.1) 0% (0 – 0) <0.0001
 % reticular 3.1% (0.5 – 10.2) 0% (0 – 0) <0.0001
 % honeycomb 0% (0 – 0) 0% (0 – 0) 0.04
 % ILA 38.3% (9.6 – 81.4) 0% (0 – 0) <0.0001
 % normal 59.9% (18.6 – 87.2) 99.9% (97.0 – 100) <0.0001

Right lower posterior zone
 % ground glass 67.7% (34.1 – 91.8) 0% (0 – 0) <0.0001
 % reticular 9.5% (0.3 – 32.4) 0% (0 – 0) <0.0001
 % honeycomb 0% (0 – 0) 0% (0 – 0) 0.133
 % ILA 97.2% (72.3 – 99.9) 0 (0 – 0) <0.0001
 % normal 2.9% (0.1 – 27.8) 100% (92.0 – 100) <0.0001

Left upper anterior lung zone
 % ground glass 0% (0 – 4.3) 0% (0 – 0) 0.001
 % reticular 0% (0 – 3.1) 0% (0 – 0) 0.001
 % honeycomb 0% (0 – 0) 0% (0 – 0) 0.298
 % ILA 0% (0 – 17.1) 0% (0 – 0) 0.0009
 % normal 95.9% (79.7 – 100) 85.6% (69.8 – 95.3) 0.046

Left lower lateral lung zone
 % ground glass 38.1% (12.5 – 72.3) 0% (0 – 0) <0.0001
 % reticular 3.0% (1.0 – 7.0) 0% (0 – 0) <0.0001
 % honeycomb 0% (0 – 0) 0% (0 – 0) 0.08
 % ILA 62.7% (19.1 – 85.2) 0% (0 – 0) <0.0001
 % normal 37.2% (14.7 – 80.9) 100% (94.7 – 100) <0.0001

Left lower posterior lung zone
 % ground glass 67.1% (33.3 – 88.4) 0% (0 – 0) <0.0001
 % reticular 12.9% (1.8 – 25.8) 0% (0 – 0.3) <0.0001
 % honeycomb 0% (0 – 0) 0% (0 – 0) 0.226
 % ILA 96.0 (70.1 – 100) 0 (0 – 0.3) <0.0001
 % normal 4.0% (0 – 29.4) 99.7% (92.8 – 100) <0.0001