X-ray examination apparatus and arrangement for remote-controlle

Details X-ray examination apparatus and arrangement for remote-controlle X-ray examination apparatus and arrangement for remote-controlle

1994-06-13

1995-05-02

Porta, David P.

X-ray or gamma ray systems or devices

Auxiliary data acquisition or recording

Patient or exposure data

378162, G03B 4202

Patent

active

054127076

ABSTRACT:
Information on positioning of a patient during x-ray examination is provided by imaging a marker, notably a lead-letter, simultaneously with imaging a patient. Remote-controlled markers are provided attached to separate moveable flat frames. The use of a flat frame makes possible to incorporate an arrangement for remote-controlled position and/or orientation, within the serial film changer without increasing required vertical space. Thus comfortable and easy access for a patient onto the patient table is provided. The motion of relevant frames along guide rails is performed by means of a system of motors, belts or chains and pulleys. The motors are controlled by means of potentiometers and a micro-processor that supplies signals in correspondence with a required motion of a relevant frame. The motors are positioned within the serial film changer and aside of the patient support table. As a consequence restriction of the longitudinal motion of the patient support table is avoided. By means of a system of levers and switches collision of frames with the outer casing of the serial film changer is avoided. Further safeguarding against unintentionally imaging markers is provided by means of a system of levers and switches that transmit a signal to the micro-processor whenever markers are positioned in a predetermined position in which they are outside the x-ray beam.

REFERENCES:
patent: 4860330 (1989-08-01), Strommer et al.

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