• Arrows on B-mode enable selection between Resolution (default) and Penetration settings on selected presets. Penetration settings help optimize the image for scanning large or difficult to scan patients.
  • In color flow mode, the arrows help toggling between fast and slow flow settings by changing the velocity scale (PRF) to a high or low value respectively. 
  • More details can be found under Resolution/Penetration settings and Fast and slow flow settings under the ‘Scanning’ section of the user manual.