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. 2018 Dec 14;29(8):4058–4067. doi: 10.1007/s00330-018-5888-y

Fig. 3.

Fig. 3

The linear regression of the lobar scores between the absolute CT-%emphysema and the relative HPX-%ventilation, the absolute HPX-%ventilation, SPECT-%perfusion, and SPECT-%ventilation are shown in ad over the entire COPD patient population including the liner regression lines, slope, and p values