Figure 1, Left. Image montage from subject #4 (CC_vol36%, CC_HFCC 5%). Figure 1, Right. Image montage from subject #8 (CC_vol: 0%, CC_HFCC: 25%). For both, (A) Pre-coughing, (B) After 18 coughs in 18 min (C) Prior to vest-augmented coughing (D) After 30 minutes vest treatment and 18 coughs over 40 minutes. Images are posterior planar images depicting Tc-SC deposited in the lungs.