The ultrasound Output Display Standard* (ODS) has a specific technical definition but that definition is generally found standing in contextual isolation. Specifically, how do these dimensionless MI and TI numbers, displayed on the ultrasound system monitor relate to: (1) the laws of ultrasound physics, (2) FDA prescribed regulatory constraints placed on the limits of the transmitted acoustic energy, (3) the other user controls on the ultrasound system, and (4) the ALARA principle.