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. 2022 Jul 2;163(4):933–941. doi: 10.1016/j.chest.2022.06.036

Figure 3.

Figure 3

SPECT perfusion scan. Pleural-based segmental perfusion defects (arrows) are present in the superior segment of the left lower lobe, the superior segment of the right lower lobe, and the anterior and the apical segments of the right upper lobe. There were no matching ventilation defects. ANT = anterior view; LAO = left anterior oblique; LLAT = left lateral; LPO = left posterior oblique; PERF = perfusion scan; POST = posterior view; RAO = right anterior oblique; RLAT = right lateral; RPO = right posterior oblique; SPECT = single-phton emission CT; VENT = ventilation scan.