Ultrasonic ranging system for radiation imager position control

Details Ultrasonic ranging system for radiation imager position control Ultrasonic ranging system for radiation imager position control

1995-10-02

1997-08-05

Porta, David P.

X-ray or gamma ray systems or devices

Electronic circuit

With switching means

378 95, H05G 154

Patent

active

056549970

ABSTRACT:
An ultrasonic ranging system for providing a distance to a subject signal for use in positioning a movable imaging element support structure with respect to a subject of examination includes a collar assembly disposed around a portion of the imaging element structure disposed towards an imaging region; a plurality of ultrasonic transducers disposed in a sensing pattern around the collar assembly; and an ultrasonic ranging processing unit coupled to the transducers to control processing of ultrasonic ranging signals from the transducers. The transducers are typically disposed in one or more rows on the surface around the circumference of the collar assembly such that the lobes of ultrasonic signals generated provide a desired ranging field.

REFERENCES:
patent: 4320766 (1982-03-01), Alihanka et al.
patent: 5019804 (1991-05-01), Fraden
patent: 5097495 (1992-03-01), Gray et al.
patent: 5105455 (1992-04-01), Kato et al.
patent: 5485502 (1996-01-01), Hinton et al.
patent: 5486700 (1996-01-01), Silberklang et al.
Application entitled, "Imager Control System With Contact Detector," Serial No. 08/537,580, filed Oct. 2, 1995.
Application entitled, "Capacitive Proximity Detector for Radiation Imager Position Control," Serial No. 08/537,954, filed Oct. 2, 1995.

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