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Fig. 1F —74-year-old woman with multifocal air trapping. Quantitative
attenuation difference color maps for images obtained in axial (D),
coronal (E), and sagittal (F) planes reveal multifocal regions
of air trapping throughout right lung as dark blue to black regions. Color
scale ranges from 0 H (dark blue to black) to 366 H
(bright orange to yellow). Note white areas in periphery of
axial and coronal images with corresponding values of more than 366 H are
predominantly due to incomplete segmentation of chest wall.
