1. A medical imaging system comprising: image acquisition circuitry; a display; a memory; a processor coupled to the image acquisition circuitry, the display, and the memory; and a physiologic marker program stored in the memory for execution by the processor, the physiologic marker program for obtaining from a first dataset image a physiologic marker definition for an event, determining a physiologic marker associated with the marker definition, and superimposing the physiologic marker on a second dataset image on the display.