The preset management button 
opens the preset management panel that allows to manage presets. In particular, it allows to remember the settings of:
- timeline (baseline, ischemia and vasodilation)
- B-mode image calibration
- B-mode image ROI (size and position)
- Doppler calibration (X and Y calibration)
- Doppler ROI (size and position)
A preset can be saved and reused for following studies.
