Ultrasound transducer with sealed, active cooling

A scan head for an ultrasound imaging system, comprising:

• a scan head body;
• a number of transducer elements disposed within the scan head body;
• a number of electronic components that are electrically coupled to the transducer elements for driving the transducer elements and for processing received echo signals;
• wherein the electronic components are hermetically sealed within a thermally conductive compartment that is spaced from an interior surface of the scan head body to form a plenum between the thermally conductive compartment and the interior surface of the scan head body and wherein the scan head further includes
• a magnetically controlled fan having motor controlling electronics that are sealed within the thermally conductive compartment and a rotor with a number of fan blades configured to be moved by the motor controlling electronics in order to force air through the plenum and remove heat generated by the electronic components.