| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray CT device, easy to change its imaging magnifications and resolution, with its weight balance simply adjustable. SOLUTION: An X-ray source 6 and an X-ray detector 7 mounted on a guide arm 3 are movable in a touching or parting direction with respect to a specimen S. As to this move, the gravity center of a whole comprising respective constituent elements mounted on the side arm 3 is held on a rotational axis by a weight balance adjustment mechanism. The adjustment mechanism comprises a movable weight 12 movably mounted on the guide arm 3. The movement of the movable weight 12 is controlled so that the sum total of the moment of rotations around the rotational axis O is substantially zero. The movement route of the movable weight 12 is set on an arbitrary straight line parallel to the moving direction of the X-ray source 6 or of the X-ray detector 7, and not passing through the rotational axis O. COPYRIGHT: (C)2007,JPO&INPIT |
