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. 2021 Apr 29;3(2):e200564. doi: 10.1148/ryct.2021200564

Figure 3:

Normal lung US anatomy. A, Labeled US image of normal lung in a pediatric patient (scanning performed in the sagittal orientation with a curvilinear abdominal probe). The pleural line is the labeled hyperechoic line that represents the junction of the visceral and the parietal pleura. The A-line artifacts are clearly visualized as horizontal reverberation artifacts of the hyperechoic pleural line. The rib shadows separate the intercostal spaces. B, Labeled US image of normal lung in a neonate (scanning performed in the sagittal orientation at the lower lung). The interface between the liver and lung is clearly visualized. C, Labeled lung image from a lower-end ultrasound machine with a suboptimal acoustic window. Even on such limited examinations, normal A-line artifact can often still be appreciated on careful examination, as seen here. Cine clips show normal lung sliding (Movie 1) and absent lung sliding (Movie 2).

Normal lung US anatomy. A, Labeled US image of normal lung in a pediatric patient (scanning performed in the sagittal orientation with a curvilinear abdominal probe). The pleural line is the labeled hyperechoic line that represents the junction of the visceral and the parietal pleura. The A-line artifacts are clearly visualized as horizontal reverberation artifacts of the hyperechoic pleural line. The rib shadows separate the intercostal spaces. B, Labeled US image of normal lung in a neonate (scanning performed in the sagittal orientation at the lower lung). The interface between the liver and lung is clearly visualized. C, Labeled lung image from a lower-end ultrasound machine with a suboptimal acoustic window. Even on such limited examinations, normal A-line artifact can often still be appreciated on careful examination, as seen here. Cine clips show normal lung sliding (Movie 1) and absent lung sliding (Movie 2).