title: A simple acoustically coupled calibrator.
abstract: An acoustically coupled device is described which is designed to calibrate the electronic caliper systems of diagnostic ultrasound machines. The device is intended primarily for use with linear array machines where electrical interconnection of test equipment is not possible. The transmitter pulse from the linear array machine is detected by a single element transducer held in contact with its probe and used by the calibrator to initiate the injection of accurately timed markers back into the real time probe via the same transducer. The real time caliper system may be calibrated to 1540 or 1600 ms-1 using markers thus displayed on the real time machine. The device is compact and convenient to use.
mesh_terms: D002138:Calibration; D014465:Ultrasonics / Q000295:instrumentation*; D014463:Ultrasonography