Ultrasound transducer with differential mode signaling

摘要

Rather than using a coaxial cable, a twisted pair of wires is provided for each element-to-beamformer connection. Differential mode signals are transmitted between the transducer element and the respective channel. A multi-layer element is used for operation with the differential mode signals. In catheters or other probes, coaxial cables are not used. Using differential mode signals over twisted pairs allows reduction or rejection of common mode cross-talk and/or interference.

主权项

1. An ultrasound transducer element system, the system comprising:
at least one ultrasound transducer element comprising at least first and second layers of transducer material; a first electrode between the first and second layers, the electrode connected to ground for transducing; a second electrode adjacent the first layer and not the second layer; a third electrode adjacent the second layer and not the first layer; a twisted pair of wires where a first wire of the pair connects with the second electrode and a second wire of the pair connects with the third electrode; a first beamformer channel connected with the twisted pair, the first beamformer channel operable with differential mode signals corresponding to the second and third electrodes.