Fig. 2From: Efficacy of low-intensity pulsed ultrasound for the treatment of viral pneumonia: study protocol for a randomized controlled trialSchedule of enrollment, interventions, and assessments (SPIRIT figure). LIPUS, low-intensity pulsed ultrasound; CT, computed tomography; US, ultrasonography; SaO2, arterial oxygen saturation; PSI, pneumonia severity index; CPIS, clinical pulmonary infection scoreBack to article page