Fig. 3
From: Diagnostic validity of thoracic ultrasound in the assessment of pulmonary embolism
a–c CT pulmonary angiography shown in axial sections in the mediastinal window demonstrating a, b a saddle-shaped embolus extending from the distal pulmonary artery bifurcation to the right and the left main pulmonary branches then into the upper and lower segmental and subsegmental divisions (red arrows). c A mild right pleural effusion and multiple pleural-based subsegmental atelectasis were detected. d, e Ultrasound images in B-mode for the same patient showing a right basal hypoechoic pleural-based lesion (yellow arrow) in d; coexistent right basal mild reactive simple pleural effusion was seen (open yellow arrow) in e