X-ray tomography apparatus and method of taking tomographic image of object with the apparatus
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United States of America Patent
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Oct 1, 2002
Grant Date -
N/A
app pub date -
Mar 14, 2000
filing date -
Mar 15, 1999
priority date (Note) -
Expired
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Abstract
In an X-ray tomography apparatus and a method of taking tomograms inside an object through the use of the X-ray tomography apparatus, positioning of the object and operation for taking tomograms are carried out in accordance with the following procedures. An X-ray beam is irradiated to the object. An X-ray beam transmitting through the object is detected and a transmission image of the object is generated on the basis of the detected X-ray beam. While watching the transmission image of the object on a display, the object is moved by means of a moving mechanism coupled to a drive unit to change an X-ray irradiation area of the object and the object is stopped at a desired position. The moving mechanism is disconnected from the drive unit. The object irradiated with the X-ray beam is rotated by means of a rotating mechanism about a rotation axis inclined with respect to an irradiation axis of the X-ray beam. An X-ray beam transmitting through the object is detected by means of an X-ray detection unit and a detection image is rotated in synchronism with the rotation of the object. On the basis of a signal representing a rotating image, a tomographic image of the object on a plane including an intersection of the rotation axis and the irradiation axis is generated.
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