Powerhead of a power injection system

Within a contrast media injector system, a method comprising the steps of:

• positioning a syringe ram at a plurality of different locations;
• acquiring at each location:
• a) a first value of the syringe ram position from an encoder, and
• b) a second value of a magnet from a plurality of sensors configured to detect the magnet, the magnet arranged to move with the syringe ram;
• associating the first and second values for each different location.

A contrast media injector system comprising:

• a syringe ram;
• a drive mechanism coupled with the syringe ram and configured to move the syringe ram;
• a reflective surface coupled with the drive mechanism;
• and
• a optical sensor configured to transmit radiation towards the reflective surface and detect a reflection therefrom.

Within a contrast media injector system, a method comprising the steps of:

• positioning a syringe ram at a plurality of different locations;
• acquiring at each location:
• a) a first value of the syringe ram position from an encoder, and
• b) a second value of a level of a reflected signal at an optical sensor, the optical sensor configured to transmit radiation to a reflective surface that moves with the syringe ram and determine an amount of reflective radiation that returns therefrom;
• associating the first and second values for each different location.