Patent ID: 8233585
Filing Date: 2012-07-31
Classification: A61B

Abstract:
1. An X-ray diagnostic device comprising: an X-ray irradiation means; an X-ray image detection means; a first holding means for holding the X-ray irradiation means and the X-ray image detection means to oppose each other; a second holding means for rotatably holding the first holding means about a first axis; a first driving means for rotatably driving the first holding means; a third holding means for rotatably holding the second holding means about a second axis that is orthogonal to the first axis; a second driving means for rotatably driving the second holding means; and a drive control means for controling the driving speed of the first driving means and the second driving means; wherein the drive control means controls the first driving means and the second driving means so that: (A) one of the holding means, either the first holding means or the second holding means, rotates in steady-state with an angular velocity of a·sin(t) and the other holding means rotates with an angular velocity of b·cos(t) so that the X-ray irradiation means and the X-ray detection means move in a precession motion along a circular or an elliptical orbit; and (B) one of the holding means engages in a run time, ΔT wherein a and b are maximum angular velocities, t is time and ΔT is the time of rotation from angles φ