Today, I review, link to, and embed Linking To And Embedding “Lung Ultrasound Normal Vs Pleural Effusion Image Appearances | Thoracic Spine, Quad & Sinusoid Signs” from Dr. Sam’s Imaging Library.
All that follows is from the above resource.
Oct 14, 2024Lung Ultrasound Normal Vs Pleural Effusion Image Appearances | Thoracic Spine, Quad & Sinusoid Signs Pleural Effusion – 0:00 Thoracic Spine Sign – 4:22 Quad Sign – 6:11 Sinusoid Sign – 8:22 Pleural Effusion: Dark (anechoic) or hypoechoic area between the lung and chest wall. Presence of echoes in the pleural cavity The fluid can appear echogenic or heterogeneous, indicating blood, pus, debris, cancer cells or fibrin strands. Absence of mirror artifacts Thoracic spine sign: Continuous appearance of thoracic spine above the diaphragm. Quad sign: the fluid in the pleural space creates a rectangular (quadrangular) shape when seen on ultrasound. It involves four distinct lines or borders, which are: Parietal pleura (the chest wall). Visceral pleura (lining the lung surface). The fluid between these pleural layers. The rib shadows above and below the effusion, creating the “frame.” Sinusoid sign: Wavy or sinusoidal motion of the visceral pleura on M-mode as the lung expands and collapses with respiration.
