Surgical location and navigation device attached to C-arm X ray machine
A technology of positioning and navigation, X-ray machine, applied in surgical navigation system, surgery, medical science and other directions, can solve the problems of failure of surgery, increased radiation damage of doctors and patients, and high error rate, so as to improve the accuracy of surgery and increase the safety of surgery. , The effect of convenient positioning and calibration
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[0030] Below in conjunction with accompanying drawing, the present invention will be further described:
[0031] The invention is based on figure 1 The concentric circle positioning principle shown: Since the refractive index of X-rays in different media is 1, X-rays propagate in a straight line in different media, and the X-ray beam emitted from the X-ray emitter is conical, which can be regarded as It is composed of gradually larger and continuous coaxial circles. Assume that there are three points on any three parallel coaxial circular planes on the conical shape. If the images of these three points overlap on the X-ray projection film, the three points must be in the same position. On the straight line, and these three points correspond to the positions of the respective circles (the angles are the same as the centers of the respective circles, and the distances are proportional), and vice versa. see figure 1 , Point O is the X-ray source point, point B is the laser sour...
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