Figure 2From: Respiratory sound energy and its distribution patterns following clinical improvement of congestive heart failure: a pilot study Representative vibration response imaging images and chest radiographs. A, Healthy volunteer. B, congestive heart failure (CHF) patients without radiographically evident pulmonary edema (REPE). C, CHF patients with REPE. D, Mechanically ventilated CHF patients with REPE. VRI, vibration response imaging. CHF, congestive heart failure. REPE, radiographically evident pulmonary edema.Back to article page