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. Author manuscript; available in PMC: 2020 Jul 1.
Published in final edited form as: Acad Radiol. 2018 Sep 27;26(7):949–959. doi: 10.1016/j.acra.2018.08.015

Figure 5.

Figure 5.

Bland-Altman plots comparing the K-means and binning analyses of the original high-SNR scans for 29 subjects. One plot is dedicated to each class of ventilation distribution — ventilation defect percentage (VDP), low ventilation percentage (LVP), medium ventilation percentage (MVP), and high ventilation percentage (HVP). These results show only modest bias between binning and adaptive K-means for VDP (+1.5%) and HVP (−4.0%), but more substantial biases for LVP (−5.7%) and MVP (+8.1%). The limits of agreement between the two methods were 0.5% to 13.4% for MVP, while LVP showed the broadest range from −11.7% to +1.9%.