Table 2. CT measurements of pulmonary artery, aorta and bronchiectasis severity (n=321).

Factors	Values
Modified Reiff score†
Mean (SD)	7.1 (3.8)
Normal (score =0), n (%)	7 (2.2)
Mild (score =1–6), n (%)	143 (44.5)
Moderate (score =7–12), n (%)	143 (44.5)
Severe (score =13–18), n (%)	28 (8.7)
Ao diameter (mm), mean (SD)	31.5 (4.0)
PA diameter (mm), mean (SD)‡	24.6 (3.5)
PA/Ao, mean (SD)	0.79 (0.11)

^†, 27 CT scans had 1 or more lobes that could not be scored because of lobectomy/resection, atelectasis, or scarring. Those scans were not included this analysis; ^‡, 66 CT scans were contrast enhanced. CT, computed tomography; SD, standard deviation; Ao, aorta; PA, pulmonary artery.