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. 2023 Mar 11;164(2):339–354. doi: 10.1016/j.chest.2023.02.049

Figure 13.

Figure 13

A-D, Single photon emission CT scan images from a 72-year-old male with COPD. A, High-resolution CT image showing centrilobular emphysema in upper lobes with an extent of 40% of the lung volume. B-D, Transverse (B) and frontal (C) perfusion single photon emission CT images revealing areas with reduced perfusion in all segments of the right upper lobe and apicoposterior and the anterior segments of the left upper lobes. ANT = anterior; LAO = left anterior oblique; LAT = lateral; LT = left; POST = posterior; RPO = right posterior oblique; RT = right; Upp = upper.