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Figure 6
Frequency response (left) showing the power of lung tissue expansion (arbitrary units) summed across the lung. A peak exists at the frequency of the heartbeat (6.87 Hz) and the first harmonic of the heart frequency (13.74 Hz). The ECG measured the heart rate to be 6.7 Hz. We mapped the distribution of lung tissue oscillations at each input frequency and the heart frequencies across the lung (right). Contour levels showing magnitude of expansion in the lung maps are identical to the levels show in the legend in Fig. 4[link]. These data show that the heart and the input pressure oscillations contribute to lung expansion within different regions of the lungs.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 23| Part 1| January 2016| Pages 324-330
doi:10.1107/S1600577515021700
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