Table 1.

Differences in Measurements between CT1 and CT2 on Images Reconstructed with Standard Algorithm

Note.- Dif EI -950 = differences in emphysema indexes, as measured with threshold of -950 HU, between CT1 and CT2, Dif EI -970 = differences in emphysema indexes, as measured with threshold of -970 HU, between CT1 and CT2, Dif MLD = differences in mean lung density between CT1 and CT2, Dif TLV = differences in total lung volumes, as measured with threshold of -950 HU, between CT1 and CT2 at standard reconstruction algorithm, SD = standard deviation