Fig. 2

The algorithm (Figs. 2, 7, 8, 12, 14, 16, and 19) begins at the top with the primary ultrasound finding or application (extra bold tab) and primary clinical presentation (rectangle) and proceeds downwards. The specific MOPOCUS findings are indicated by the bold tab, while the tab itself represents the diagnosis. The double-lined rectangular frame suggests further ultrasound assessment or clinical intervention. The sequence of assessment and interpretation is guided by the black line behind these icons