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. 2009 Oct 29;181(3):218–225. doi: 10.1164/rccm.200908-1189OC

TABLE 3.

CT MEASUREMENTS AND CORRELATION WITH PULMONARY MEAN ARTERIAL PRESSURE (N = 79)

graphic file with name M24.gif
CT Parameters Mean ± SD Range r P Value
%CSA<5, % 0.55 ± 0.14 0.28–1.06 −0.512 <0.0001
%CSA5–10, % 0.20 ± 0.05 0.10–0.41 −0.196 0.083
MPAD, mm 28.0 ± 3.3 20.6–38.1 0.210 0.063
MPAD/AoD 0.81 ± 0.11 0.56–1.16 0.099 0.384

Definition of abbreviations: AoD = diameter of ascending aorta adjacent to main pulmonary artery; MPAD = diameter of the main pulmonary artery; Inline graphic = pulmonary arterial mean pressure; %CSA<5 = percentage of total lung area taken up by the cross-sectional area of pulmonary vessels less than 5 mm2; %CSA5–10 = percentage of total lung area taken up by the cross-sectional area of pulmonary vessels between 5 and 10 mm2.