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

TABLE 5.

CORRELATION BETWEEN CROSS-SECTIONAL AREA OF PULMONARY VESSELS AND PULMONARY FUNCTION TESTS (N = 79)

%CSA<5
r P Value
FEV1, % predicted 0.330 0.0029
DlCO, % predicted 0.389 0.0004
PaO2 0.006 0.9554
%LAA−950 −0.507 <0.0001

Definition of abbreviations: DlCO = diffusing capacity of the lung for carbon monoxide; %CSA<5 = percentage of total lung area taken up by the cross-sectional area of pulmonary vessels less than 5 mm2; %LAA−950 = CT measurement of the percentage of low attenuation area less than −950 HU, defined as emphysema.