Ringâ•'down artifacts posterior to the right hemidiaphragm on abdominal sonography: sign of pulmonary parenchymal abnormali
![Suean Pascoe on Twitter: "4/B-lines –These are a ring down artefact which does not fade – they occur because the ultrasound beam excites liquid trapped between gas bubbles and causes the liquid Suean Pascoe on Twitter: "4/B-lines –These are a ring down artefact which does not fade – they occur because the ultrasound beam excites liquid trapped between gas bubbles and causes the liquid](https://pbs.twimg.com/media/EFgsU0tUEAEEhxs.png)
Suean Pascoe on Twitter: "4/B-lines –These are a ring down artefact which does not fade – they occur because the ultrasound beam excites liquid trapped between gas bubbles and causes the liquid
![9: Artefactos en imágenes IVUS. (a) Ring-down artifact. (b) Guidewire... | Download Scientific Diagram 9: Artefactos en imágenes IVUS. (a) Ring-down artifact. (b) Guidewire... | Download Scientific Diagram](https://www.researchgate.net/publication/320910920/figure/fig4/AS:558111430844416@1510075542872/Figura-29-Artefactos-en-imagenes-IVUS-a-Ring-down-artifact-b-Guidewire-artifact.png)