Fig. 3
From: Cardiopulmonary ultrasound correlates of pleural effusions in patients with congestive heart failure
Pleural effusions (PEs) scoring method. a No PEs visible = 0. b PEs visible only in the costophrenic angle = 1. c PEs extending over the costophrenic angle without a clear separation of the lung base from the diaphragm = 2. d Clear separation between diaphragm and lung base at any point = 3. e PEs occupying more than 50% of the basal pleural cavity visible in the standardized imaging plane = 4 [15]