Tomograph
First Claim
1. An X-ray CT apparatus comprising:
- X-ray generating means for generating an X-ray;
X-ray detecting means arranged opposite to the X-ray generating means for two-dimensionally detecting an X-ray dose which is transmitted through an object to be examined;
holding means for holding the X-ray generating means and the X-ray detecting means so that the object is positioned therebetween;
first rotation driving means for driving the holding means to rotate on a locus of movement around the object;
support means for supporting the first rotation driving means;
image processing means for producing an image of the object on the basis of the X-ray dose detected by the X-ray detecting means; and
image display means for displaying the image produced in the image processing means, further comprising;
second rotation driving means to integrally rotate the holding means supported by the support means and the support means in a manner such that the rotation center of the second rotation driving means is parallel with the rotation center of the first rotation driving means and is located at a different position from that of the first rotation driving means; and
drive control means for controlling the first rotation driving means in a first imaging mode and separately controlling the first rotation driving means and the second rotation driving means in a second imaging mode.
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Accused Products
Abstract
An X-ray CT apparatus takes a short time for image processings in irradiating a cone beam X-ray to the whole jaw, including a dental arc, and to a local region, and to obtain a panoramic image showing conditions of a dental row. The apparatus includes, a rotative arm suspended at one end of a support column, and an X-ray generating device and a two-dimensional X-ray detecting device oppositely fixed to respective ends of the rotative arm. The rotative arm is supported via a dual rotation system. An object to be examined sits on a chair which is movable upward and downward, and an examining region is adjusted to the height of the imaging center of the imaging apparatus. The object'"'"'s head is fixed by a fine-adjustable head holder. Imaging is performed so that the distance between rotation centers of the two rotation systems substantially coincides with the object'"'"'s dental arc.
48 Citations
9 Claims
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1. An X-ray CT apparatus comprising:
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X-ray generating means for generating an X-ray;
X-ray detecting means arranged opposite to the X-ray generating means for two-dimensionally detecting an X-ray dose which is transmitted through an object to be examined;
holding means for holding the X-ray generating means and the X-ray detecting means so that the object is positioned therebetween;
first rotation driving means for driving the holding means to rotate on a locus of movement around the object;
support means for supporting the first rotation driving means;
image processing means for producing an image of the object on the basis of the X-ray dose detected by the X-ray detecting means; and
image display means for displaying the image produced in the image processing means, further comprising;
second rotation driving means to integrally rotate the holding means supported by the support means and the support means in a manner such that the rotation center of the second rotation driving means is parallel with the rotation center of the first rotation driving means and is located at a different position from that of the first rotation driving means; and
drive control means for controlling the first rotation driving means in a first imaging mode and separately controlling the first rotation driving means and the second rotation driving means in a second imaging mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification