analysis of the number of echogenic lines seen in the region of the right hemidiaphragm and their relationship to the gas reverberation artifact suggests that two of the three lines seen in scans of normal subjects represent actual structures ( diaphragm -- liver capsule complex and lung -- visceral pleura an in-vitro model constructed to simulate the liver , diaphragm , lung , and pleural effusion support the hypothesis that the lung and not the diaphragm is the mirror of the right upper quadrant .
C0225776
visceral pleura
C0024109
lung