Video 04-01: Normal RUQ
This video of a normal right upper quadrant clearly shows all four of the spaces visible in this window. The pleural space has no fluid, as is demonstrated by the mirror artifact in the bottom left corner of the screen, showing a reflection of the liver on the other side of the diaphragm. The hepatorenal recess is a white line without any breaks or fluid collections. The inferior pole of the kidney is incompletely visualized, but is clear. The subdiaphragmatic space is similarly a tight border between liver and diaphragm without anechoic space.