Table 1

List of relevant terms and abbreviations

ARDSAcute respiratory distress syndrome
HUHounsfield units
EIEnd-inspiratory
EEEnd-expiratory
WarpingImage processing methodology to register (superimpose) anatomical structures between scans
Severe injuryLung tissue with irreversibly low gas content (ie, density >−300 HU)
Unstable inflationLung tissue with elevated changes in EI/EE gas content and with high risk of worsening injury (ie, increasing density) at later times
PRMParametric response map
ROCReceiver operating characteristic
VTTidal volume
PEEPPositive end-expiratory pressure
CdynDynamic compliance
PIPPeak inspiratory pressure