Radiation detector and X-ray CT apparatus
First Claim
Patent Images
1. An X-ray CT apparatus comprising:
- a rotating base;
an X-ray tube mounted on said rotating base;
a radiation detector mounted on said rotating base to oppose said X-ray tube through a photographing area; and
a processor for generating an image on the basis of an output from said radiation detector, wherein said radiation detector comprises;
a heat insulating case mounted on said rotating base;
a radiation incident window formed in said heat insulting case, a detection panel on which detection elements for detecting radiation incident through said radiation incident window are arrayed;
a fluid circulatory path formed in said heat insulating case by said detection panel; and
a circulator for circulating a fluid in said circulatory path.
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Abstract
An X-ray CT radiation detector includes a heat insulating case mounted on a rotating base, a radiation incident window formed in the heat insulating case, a detection panel on which detection elements for detecting radiation incident through the radiation incident window are arrayed. The detection panel is positioned to form a fluid circulatory path in the heat insulating case. A circulator for circulating the fluid is placed in the circulatory path. The circulatory path and circulation of the fluid by the circulator make it possible to make the temperature of the detection panel relatively uniform.
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Citations
19 Claims
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1. An X-ray CT apparatus comprising:
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a rotating base;
an X-ray tube mounted on said rotating base;
a radiation detector mounted on said rotating base to oppose said X-ray tube through a photographing area; and
a processor for generating an image on the basis of an output from said radiation detector, wherein said radiation detector comprises;
a heat insulating case mounted on said rotating base;
a radiation incident window formed in said heat insulting case, a detection panel on which detection elements for detecting radiation incident through said radiation incident window are arrayed;
a fluid circulatory path formed in said heat insulating case by said detection panel; and
a circulator for circulating a fluid in said circulatory path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An X-ray CT apparatus comprising:
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a rotating base;
an X-ray tube mounted on said rotating base;
a radiation detector mounted on said rotating base to oppose said X-ray tube through a photographing area; and
a processor for generating an image on the basis of an output from said radiation detector, wherein said radiation detector comprises;
a detection panel on which detection elements for detecting radiation emitted from said X-ray tube and passed through a subject are arrayed a container mounted on said rotating base to contain said detection panel; and
a fluid circulatory path formed in said container by said detection panel. - View Dependent Claims (18, 19)
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15. An X-ray CT apparatus comprising:
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a rotating base;
an X-ray tube mounted on said rotating base;
a radiation detector mounted on said rotating base to oppose said X-ray tube through a photographing area; and
a processor for generating an image on the basis of an output from said radiation detector, wherein said radiation detector comprises;
a heat insulating case mounted on said rotating base;
a radiation incident window formed in said heat insulating case;
a detection panel on which detection elements or detecting a radiation incident through said radiation incident window are arrayed, said detection panel being housed in said heat insulating case; and
at least one heating/heat absorbing panel having the Peltier effect or at least one heat exchanger, said heating/heat absorbing panel or said heat exchanger being housed in said heat insulating case.
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16. A radiation detector comprising:
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a heat insulating case mounted on a base;
a radiation incident window formed in said heat insulating case;
a detection panel on which detection elements for detecting a radiation incident through said radiation incident window are arrayed;
a fluid circulatory path formed in said heat insulating case by said detection panel; and
a circulator for circulating a fluid in said circulatory path.
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17. A radiation detector comprising:
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a heat insulating case;
a radiation incident window formed in said case;
a detection panel on which detection elements for detecting radiation incident through said radiation incident window are arrayed; and
a fluid circulatory path formed in said case.
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Specification
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Current AssigneeToshiba Medical Systems Corporation (Canon Inc.)
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Original AssigneeKabushiki Kaisha Toshiba (Toshiba Corporation)
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InventorsKimishima, Sakae, Sasaki, Tomiya
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Primary Examiner(s)DUNN, DREW A
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Application NumberUS09/595,545Time in Patent Office739 DaysField of Search378/19, 378/141, 378/142, 378/98.8, 250/370.15US Class Current378/19CPC Class CodesA61B 6/035 Mechanical aspects of CTA61B 6/4488 Means for cooling A61B6/045...
