Fig. 8
From: Multi-nuclear magnetic resonance spectroscopy: state of the art and future directions
Reproduced with permission from John Wiley and Sons (License Number: 5324291003853). NMR Biomed. 2013 April; 26(4): 424–435
Representative 129Xe ventilation (left) and 1H SSFP anatomical image (right) slices of three COPD subjects. Note, a variety of ventilation defects score percentage (VDS%) are observed increasingly from 33.3% (a), 50.0% (b) to 66.7% (c) throughout the lungs. SSFP; Steady-state Free Precession.