CN103932729A - X-ray filter of computer tomography system - Google Patents
X-ray filter of computer tomography system Download PDFInfo
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- CN103932729A CN103932729A CN201410135919.1A CN201410135919A CN103932729A CN 103932729 A CN103932729 A CN 103932729A CN 201410135919 A CN201410135919 A CN 201410135919A CN 103932729 A CN103932729 A CN 103932729A
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- filter
- opening
- arc
- curved surface
- trapezoidal platform
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Abstract
The invention relates to an X-ray filter of a computer tomography system, and relates to the technical field of computer tomography systems. The two waists of a trapezoidal platform are respectively provided with a protruding step used for fixing, and an arc opening used for filtering emergent light is formed in the upper surface of the trapezoidal platform. The X-ray filter is characterized in that the arc opening is provided with a smooth arc curved surface, in the thickness direction of the trapezoidal platform, the open degree of the opening with the arc curved surface is gradually and continuously increased from one side to the other side of the trapezoidal platform. Due to the arrangement, before scanning and in the scanning process, according to the needed shape and size of the opening, the filter is moved parallel with the thickness direction of the trapezoidal platform of the filter, and the needed curved surface is moved into a plane of ray beams so that useless rays can be filtered out to the maximum extent. The emergent light filtering face has a continuous adjusting effect, in the CT scanning process, it is only required to adopt the filter, and the size of the opening of the filter can be adjusted dynamically according to the shape and the size of a detected human body.
Description
Technical field
The present invention relates to computed tomograph scanner system, i.e. the technical field of CT instrument.
Background technology
The image link of computed tomograph scanner system (CT) is mainly made up of ray tube, ray filter, collimator and detector.Filter wherein can effectively reduce the x rayed dosage that examinee accepts in the situation that not affecting picture quality.Along with popularizing that CT examination is applied in clinical medicine, how to reduce more efficiently the popular direction that exposure dose becomes current CT manufacture and uses area research.
In industry, some more common modes have at present:
1, increase the thickness of metal forming filtration layer, can effectively change the line matter of X-ray, remove detecting useless soft rays.
2, the many groups of increase morphological filter, have effectively reduced and have received inspection region roentgendosis in addition.But traditional CT filter uses the filter of two or more different openings width, wherein select a use that size is approaching according to person under inspection's build size in multiple filtrations in use.But this problem of bringing is, person under inspection's size is different, and human body is not an absolute circle yet, but more close to ellipse.Can not reach the Perfect Matchings to all persons under inspection with the filter of several sizes like this, more cannot meet the dynamic non-circular profile that is equipped with human body in inferior scanning.
Summary of the invention
The present invention seeks to propose the adjustable filter of the continuous shape of integrative electrodeless that a kind of integrated level is higher, can in scanning process, adjust to easily optimum coupling according to body shape, can effectively further reduce person under inspection's X-ray exposure dose.
The present invention includes a bucking ladder, be provided for respectively at two waists of bucking ladder the protrusion step of fixing, be provided for filtering the arc opening of bright dipping at the upper surface of bucking ladder, it is characterized in that described arc opening is a level and smooth arc-shaped curved surface; Along bucking ladder thickness direction, strengthen continuously gradually from a side to the opening of the arc-shaped curved surface of opposite side of bucking ladder.
Due to above setting, before scanning and in process, opening shape size as required, along the bucking ladder thickness direction moving filter device abreast of filter, the curved surface of needs is moved in the plane of beam and just can reach the filtration to useless ray to greatest extent, the bright finish that filters out of the present invention has reached a continuously adjustable effect, in CT scan process, only need to adopt this filter, just can dynamically adjust filter opening size according to the geomery of being examined human body.
Superiority of the present invention is embodied in:
1, in CT scan process, can dynamically adjust filter opening size according to the geomery of being examined human body.
2, the opening size of adjusting in real time can reach the attenuating of X ray to greatest extent of more pressing close to body configuration.
3, can make the X-ray exposure dose that person under inspection accepts reduce significantly, make CT examination safer reliable.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is bowing to view of Fig. 1.
Detailed description of the invention
As shown in Figure 1, 2, the x-ray filter body of computed tomograph scanner system is designed to a bucking ladder 1, be provided for respectively the protrusion step 2,3 of fixing at two waists of bucking ladder 1, be provided for filtering the arc opening 4 of bright dipping at the upper surface of bucking ladder 1.
This arc opening 4 is a level and smooth arc-shaped curved surface, and along the thickness direction of bucking ladder 1, strengthens continuously gradually from a side to the opening of the arc-shaped curved surface of opposite side of bucking ladder 1.
Claims (1)
1. the x-ray filter of a computed tomograph scanner system, comprise a bucking ladder, two waists at bucking ladder are provided for respectively the protrusion step of fixing, be provided for filtering the arc opening of bright dipping at the upper surface of bucking ladder, it is characterized in that described arc opening is a level and smooth arc-shaped curved surface; Along bucking ladder thickness direction, strengthen continuously gradually from a side to the opening of the arc-shaped curved surface of opposite side of bucking ladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410135919.1A CN103932729A (en) | 2014-04-08 | 2014-04-08 | X-ray filter of computer tomography system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410135919.1A CN103932729A (en) | 2014-04-08 | 2014-04-08 | X-ray filter of computer tomography system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103932729A true CN103932729A (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410135919.1A Pending CN103932729A (en) | 2014-04-08 | 2014-04-08 | X-ray filter of computer tomography system |
Country Status (1)
| Country | Link |
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| CN (1) | CN103932729A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6307918B1 (en) * | 1998-08-25 | 2001-10-23 | General Electric Company | Position dependent beam quality x-ray filtration |
| CN1575766A (en) * | 2003-07-15 | 2005-02-09 | Ge医疗***环球技术有限公司 | X-ray distribution adjusting filter appartus and x-ray ct apparatus using the same |
| US20050031084A1 (en) * | 2002-04-22 | 2005-02-10 | Toth Thomas L. | Method and apparatus of modulating the filtering of radiation during radiographic imaging |
| CN101909523A (en) * | 2007-12-28 | 2010-12-08 | 皇家飞利浦电子股份有限公司 | The filter assembly that is used for computed tomography systems |
| CN102074276A (en) * | 2009-11-16 | 2011-05-25 | 西门子公司 | Filter for filtering x-rays and x-ray computed tomography |
| US20120069953A1 (en) * | 2010-09-22 | 2012-03-22 | Naveen Chandra | System and method of notch filtration for dual energy ct |
| CN103236279A (en) * | 2013-04-18 | 2013-08-07 | 东软飞利浦医疗设备***有限责任公司 | CT (computed tomography) machine filter |
| CN103349555A (en) * | 2013-04-27 | 2013-10-16 | 中国人民解放军北京军区总医院 | X ray filtration device, X ray filtration system and mobile CT scanner |
| CN203873777U (en) * | 2014-04-08 | 2014-10-15 | 江苏中惠医疗科技股份有限公司 | X-ray filter of computed tomography (CT) system |
-
2014
- 2014-04-08 CN CN201410135919.1A patent/CN103932729A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6307918B1 (en) * | 1998-08-25 | 2001-10-23 | General Electric Company | Position dependent beam quality x-ray filtration |
| US20050031084A1 (en) * | 2002-04-22 | 2005-02-10 | Toth Thomas L. | Method and apparatus of modulating the filtering of radiation during radiographic imaging |
| CN1575766A (en) * | 2003-07-15 | 2005-02-09 | Ge医疗***环球技术有限公司 | X-ray distribution adjusting filter appartus and x-ray ct apparatus using the same |
| CN101909523A (en) * | 2007-12-28 | 2010-12-08 | 皇家飞利浦电子股份有限公司 | The filter assembly that is used for computed tomography systems |
| CN102074276A (en) * | 2009-11-16 | 2011-05-25 | 西门子公司 | Filter for filtering x-rays and x-ray computed tomography |
| US20120069953A1 (en) * | 2010-09-22 | 2012-03-22 | Naveen Chandra | System and method of notch filtration for dual energy ct |
| CN103236279A (en) * | 2013-04-18 | 2013-08-07 | 东软飞利浦医疗设备***有限责任公司 | CT (computed tomography) machine filter |
| CN103349555A (en) * | 2013-04-27 | 2013-10-16 | 中国人民解放军北京军区总医院 | X ray filtration device, X ray filtration system and mobile CT scanner |
| CN203873777U (en) * | 2014-04-08 | 2014-10-15 | 江苏中惠医疗科技股份有限公司 | X-ray filter of computed tomography (CT) system |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140723 |