X-ray examination apparatus and arrangement for remote-controlled position indication.,申请号EP19930201738-传众专利搜索

X-ray examination apparatus and arrangement for remote-controlled position indication.

申请公布号：EP0576075(A1)

申请号：EP19930201738

申请日期：1993.06.17

申请公布日期：1993.12.29

申请人：

PHILIPS ELECTRONICS N.V.

发明人：HOEKS, ANTONIUS JOHANNES LUDOVICUS MARIA

分类号：A61B6/00;A61B6/08;G03B42/04;(IPC1-7):G03B42/04

主分类号：A61B6/00

摘要：<p>Information on positioning of a patient during x-ray examination is provided by imaging a marker, notably a lead-letter (9a-d), simultaneously with imaging a patient. Remote-controlled markers (9a-d) are provided attached to separate moveable flat frames (10,11). 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 (10,11) along guide rails is performed by means of a system of motors (19,20), belts (21) or chains and pulleys (22,23). The motors (19,20) are controlled by means of potentiometers (28) and a micro-processor (29) 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 (30a-d) 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. <IMAGE></p>