Right subcostal view is a good way to observe GB, CBD, right liver and diaphragm.
Sometimes diaphragm on this approach can tell us important information.
Case 1: Normal diaphragm with hyperechoic and smooth line
Case 2: Pulmonary fibrosis patient with diffuse interstitial pattern. Multiple B lines visible abut diaphragm
Case 3: Right lower lung pneumonia. Consolidation/ hepatization & Air bronchogram are visible on the other side of diaphragm