of internal organs using an ultrasound transducer sometimes mounted on a fiberoptic endoscope. In endosonography
the transducer converts electronic signals into acoustic pulses or continuous waves and acts also as a receiver to detect reflected pulses from within the organ. An audiovisual-electronic interface converts the detected or processed echo signals, which pass through the electronics
of the instrument, into a form that the technologist can evaluate. The procedure should not be confused with endoscopy
which employs a special instrument called an endoscope. The "endo-" of endosonography
refers to the examination of tissue within hollow organs, with reference to the usual ultrasonography
procedure which is performed externally or transcutaneously.