Apparatus for the ultrasonic examination of bodies having...

Details Apparatus for the ultrasonic examination of bodies having... Apparatus for the ultrasonic examination of bodies having...

A - Human Necessities

61

B

349/33, 349/36,

A61B 10/00 (2006.01) A61B 8/00 (2006.01) G01N 29/04 (2006.01) G01S 15/89 (2006.01) G10K 11/35 (2006.01)

Patent

CA 1089973

ABSTRACT OF THE DISCLOSURE: The invention relates to apparatus for generating electrical signals representing the instantaneous position and attitude of an object with reference to a coordinate system. A pair of wave transmitters are mounted and controlled so that they follow any movement of the object and are arranged to transmit ultrasonic pulses to three planar transducers arranged to con- vert the received energy into signals representative of the instantaneous position and attitude of the two transmitters relative to the three transducers. The invention is particularly applicable to apparatus for the ultrasonic examination of bodies having non-planar surfaces and in this case the object referred to is the ultrasonic probe designed to transmit wave energy into the body. The probe may be mounted with one or two degrees of rotational freedom on a boom which is itself mounted with at least two degrees of rotational freedom on a vertical column. The echoes received from the body may be used to modulate the beam of a cathode-ray tube display system, while the electrical signals from the three transducers are used to deflect the cathode-ray beam. The signals are passed through a display selection system and possibly through one or more coordinate transformation networks. In the simplest case, the display selection system selects the signals relating to two axes and displays these signals as viewed along the third axis of the coordinate system.

256695

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