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Figure 1 | Respiratory Research

Figure 1

From: Vibration response imaging: a novel noninvasive tool for evaluating the initial therapeutic effect of noninvasive positive pressure ventilation in patients with acute exacerbation of chronic obstructive pulmonary disease

Figure 1

Typical VRI Image of an AECOPD before, during and stop NPPV treatment. The typical VRI image changes with NPPV treatment. Panel A (T1), B (T2) and C(T4) represent the MEF (upper row), EVP (middle row) and QLD (lower row) characteristics at the T1,T2 and T4 stages, respectively. The VRI indices during treatment (such as MEF, EVP and QLD) improved dramatically compared with those before treatment; however, after stop NPPV treatment, these indices partly recovered. Abbreviations: T1 = Before NPPV treatment, T2 = at 15 min of NPPV treatment, T4 = at 15 min after the end of NPPV treatment, MEF = maximal energy frame Image, EVP = Expiratory vibration energy peak, QLD = Quantitative lung data.

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Respiratory Research

ISSN: 1465-993X

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