Bobbia X, et al. - Researchers compared the diagnosis concordance of five echo probes of lung ultrasound (LUS) with CT scans in intensive care and emergency patients with acute respiratory failure. In this prospective, observational, pilot study involving 10 acute patients in whom a thoracic CT scan was performed, an expert performed an LUS reference exam using five different probes: three probes with a high-quality conventional echo machine (cardiac phased-array probe, abdominal convex probe, linear probe) and two probes (cardiac and linear) with a pocket ultrasound device (PUD). Observations suggest that when performed by an expert and trained physician but not by residents, the cardiac probe of conventional machines and the linear probes of PUDs provide good diagnosis concordance with CT scans.