CN102163470B - Computer tomography device - Google Patents
Computer tomography device Download PDFInfo
- Publication number
- CN102163470B CN102163470B CN201110030878.6A CN201110030878A CN102163470B CN 102163470 B CN102163470 B CN 102163470B CN 201110030878 A CN201110030878 A CN 201110030878A CN 102163470 B CN102163470 B CN 102163470B
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- CN
- China
- Prior art keywords
- computer tomography
- shielding part
- tomography device
- ray
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
Abstract
The present invention relates to a kind of shielding part (16) of the support (2) for computer tomography device (1), this shielding part has for the transparent material of X ray (8), wherein, described shielding part (1) has the arching portion (19) being outwardly directed to from the inside of described support (2). The invention still further relates to the computer tomography device (1) that one has this shielding part (16).
Description
Technical field
The present invention relates to a kind of support for computer tomography device shielding part andA kind of computer tomography device.
Background technology
The computer tomography device of the third generation has with rotatable portion and stationary partSupport, described rotatable portion and stationary part be arranged in computer tomography device orIn the housing of frame. Rotatable portion supporting x-ray source and the X-ray detector of support. Taking orderIn target two-dimensional x-ray projection process, x-ray source and X-ray detector are along with support is rotatablePart is around columniform measurement field rotation, and target is arranged in described measurement field. Columniform measurement field is outstandingIts rotation by x-ray source and X-ray detector and X-ray detector are in the z-direction, alsoThe stretching, extension that is the direction of the system axis of computer tomography device limits.
Hit X and penetrate for the X ray that makes to send from x-ray source is not hindered by target can as far as possibleLine detector, the main housing being made up of metal of computer tomography device or support hasSurround the annular shield of measurement field in other words conj.or perhaps by the annular spoke of making for the transparent material of X rayPenetrate window. In addition, the radiation window of annular is used for computer tomography device inspection patient,Prevent in the inner rotatable portion of observing support of device, especially can not bring due at it to patientVisible gyrating mass in its situation and the fear that causes.
The shielding part of this annular should be thin as far as possible, to make the X ray causing due to shielding part can notThe decay of avoiding completely keeps as far as possible littlely. On the other hand, shielding part must bear mechanical load, shouldShielding part is for example tested with the static weight with 25kg quality in IEC test 60601.
X-ray detector more and more wider stretching, extension in z direction causes annular shielding part also broadened,Wherein, the material thickness of annular shield must be enhanced, to realize required mechanical stability. SoAnd the raising of material thickness causes the higher absorption to the X ray by radiation window, therefore, in inspectionWhile looking into target, must improve x-ray dose in undesirable mode.
Summary of the invention
Therefore, technical problem to be solved by this invention is to provide and a kind of makes for computer X-ray tomographyThe shielding part of the support of image device and a kind of computer topography dress that starts described typePut, make needn't improve as far as possible in the z-direction material thickness when broadening at shielding part.
According to the present invention, this technical problem is by a kind of propping up for computer tomography deviceThe shielding part of frame solves, and this shielding part has the material transparent for X ray, and wherein, shielding part hasThe arching portion being outwardly directed to from the inside of support.
The present invention is based on such consideration, that is, if z has arching portion outwardly to shielding part, and be somebody's turn to doArching portion causes shielding part to act on relatively from the outside the raising of the resistive torque of the power on shielding part, soAlthough shielding part is broadening in the z-direction, the material thickness of shielding part compare in z direction, have lessThe shielding part extending can remain unchanged. Due to arching portion outwardly, correspondingly can design in the z-directionWhen wide, keep the material thickness of shielding part.
According to a kind of modification of the present invention, arching portion realizes outwardly, and wherein, shielding part is by pre-tensioner. HorizontalCross section sees it is for example also pre-tensioner two adjacent shells at support in this wise of flat shielding part in the z-directionBetween body divides, arching portion is referred to outwardly, therefore in the time that power acts on shielding part from the outside, obtainedThe moment of resistance improving.
As an alternative or additional, the arching cage structure of shielding part is the geometry being outwardly directed to. DescribedGeometry preferable configuration is fan-shaped, ellipse fan-shaped, trapezoidal, triangle or circular arc. By shielding partThis design has also improved the moment of resistance that relatively acts on from the outside the power on shielding part.
According to a kind of form of implementation of the present invention, shielding part is formed by plastics.
According to a kind of modification of the present invention, the geometry of shielding part is the result of thermal deformation. As an alternative,In the time producing shielding part by injection moulding, obtain the geometry of shielding part.
Another kind of Variant Design of the present invention is to have arching portion shielding part and be configured to annular and be used as meterThe radiation window of calculation machine x-ray tomography contrast apparatus.
Technical problem to be solved by this invention is also by a kind of computer X with aforesaid shielding partRay tomography apparatus solves.
Brief description of the drawings
Embodiments of the invention shown in the drawings. Shown in the drawings:
Fig. 1 is the computer tomography device that band is useful on the annular shield of support,
Fig. 2 is the viewgraph of cross-section of traditional shielding part, and
Fig. 3 to Fig. 6 is the viewgraph of cross-section according to shielding part of the present invention.
Detailed description of the invention
In the accompanying drawings, the element that identical or function is identical always represents with identical Reference numeral. In accompanying drawingView be schematically and not to force proportionally. At the computer X-ray shown in Fig. 1Tomography apparatus 1 only illustrates to and understands journey required for the present invention hereinafter and without loss of generalityDegree.
Comprise with stationary part 3 and show at the computer tomography device 1 shown in Fig. 1The support 2 of part 4 shown in meaning, that can rotate around system axis 5. Rotatable portion 4 is at thisIn the situation of bright current embodiment, have x-ray system, this x-ray system comprises x-ray source 6With X-ray detector 7, x-ray source 6 and X-ray detector 7 positions are relatively arranged in rotatableIn part 4. In the time that computer tomography device 1 moves, X ray 8 is from x-ray source 6Towards X-ray detector 7 radiation, through measurement target and by X-ray detector 7 with measurement dataOr the form of measuring-signal detects. The stationary part 3 of support 2 and rotatable part 4 are arranged in props upFor example, in the housing being formed by metal 15 of frame 2.
Computer tomography device 1 also has the bed 9 for supporting patient P to be checked.Bed 9 comprises bed bearing 10, and on this bed bearing, layout design is for actual supporting patient P'sPatient support plate 11. Patient support plate 11 can be in this wise relatively bed bearing 10 along the side of system axis 5To movement, patient support plate 11 can be pushed into together with patient P and there is columniform measurement field 17The hole 12 of support 2 in take patient P with (for example, with spiral scan) two-dimensional x-ray projection.Columniform measurement field 17 is by the rotation of x-ray source 6 and X-ray detector 7 system for winding axis 5Motion is also especially determined along system axis 5 stretching, extension of z axis direction in other words by X-ray detector 7.
The two-dimensional x-ray projection of taking with x-ray system or the reconstruction of tomographic image, 3-D view orMeasurement data or the measuring-signal of the computing of person's three-dimensional array based on two-dimensional x-ray projection passes throughThe graphic computer 13 of computer tomography device 1 is realized, and this graphic computer can be aobviousDisplay layer image or 3-D view on showing device 14.
The housing 15 of support 2 or support 2 has the ring transparent for X ray 8 in known mannerShape shielding part 16 is in other words conj.or perhaps for the transparent ring radiation window 16 of X ray 8. From x-ray source 6The X ray 8 sending can penetrate from housing 15 by annular radiation window 16 by this way, andEnter measurement field 17, through the body region of patient P, again enter by annular radiation window 16Housing 15 also finally hits X-ray detector 7 to produce measuring-signal.
Fig. 2 shows the cross section of traditional radiation window 18 in z direction, and this radiation window is in z sideFlat to seeing. At radiation window 18 broadening and material thickness when constant in the z-direction, radiation window 18The mechanical stability that relatively acts on from the outside the power F on radiation window 18 can reduce.
Therefore, according to the present invention, suggestion is the annular radiation window of design like this, makes radiation window approximatelyUnder the same material thickness of 0.8mm, especially, when radiation window is in the z-direction when broadening, have from support2 or the arching portion 19 (as shown in Figures 3 to 6) that is outwardly directed to of housing 15, described accompanying drawing illustrates respectivelyAccording to radiation window 16.1 to 16.4 of the present invention cross section in the z-direction. At this, at Fig. 2 extremelyThe position of the cross section in the viewgraph of cross-section shown in Fig. 6 schematically illustrates out with dotted line 22 in Fig. 1.The arching portion 19 being outwardly directed to has improved according to each annular radiation window of the present invention relatively from the outsideAct on the moment of resistance of the power F on radiation window.
Figure 3 illustrates smooth ring radiation window 16.1 itself, this radiation window is pre-in the z-directionTensioning, wherein, radiation window 16.1 is roughly clamped in housing 15 in this wise by holding device 20,21Two housing parts between, make the inside outwardly arching of radiation window from support 2. If annularRadiation window 16.1 is shaped to fan-shaped or ellipse fan-shaped, obtained so identical in the z-direction cross section and lookedFigure. At this, fan-shaped or ellipse fan-shaped radiation window 16.1 can be pre-tensioner in the z-direction extraly.
Fig. 4 shows a kind of modification, and according to this modification, the radiation window 16.2 of annular is configured to trapezoidal.As an alternative, the radiation window 16.3 of annular also can be configured to according to Fig. 5 the spoke of triangle or annularPenetrate window 16.4 and can be configured to circular arc according to Fig. 6. According to the ring radiation window of Fig. 4 to Fig. 6Modification also can be pre-tensioner in the z-direction extraly.
By the structure of radiation window 16.1 to 16.4 and the installation in housing 15, can be by court respectivelyBe delivered on housing 15 to the power F of radiation window.
The geometry of ring radiation window 16.1 to 16.4 can be by the ring radiation window of original planeThe thermal deformation of mouth realizes. As an alternative, the radiation window 16.1 to 16.4 of annular can produce by injection mouldingRaw.
Preferably formed by plastics by radiation window of the present invention.
Claims (6)
1. a computer tomography device (1), has support (2), and described support (2) comprisesHousing (15), support (2) supporting x-ray source (6) and X-ray detector (7) around system axis(5) rotatable part (4) is placed in described housing (15), makes by described x-ray source (6) and XMeasurement field (17) is determined in rotatablely moving of ray detector (7),
Wherein, described housing (15) has the screen between two adjacent housing parts that are placed in support (2)Cover part (16), described shielding part (16) be configured to annular around described measurement field (17) by for X ray(8) radiation window (16) that transparent material forms,
And wherein, described shielding part (16) has in the cross section along system axis (5) from described housing(15) the arching portion (19) being outwardly directed to.
2. computer tomography device as claimed in claim 1 (1), wherein, by edgeThe pre-tensioner described shielding part of direction (16) of system axis (5) is realized described arching portion (19).
3. computer tomography device as claimed in claim 1 (1), wherein, described archPars convoluta (19) is configured to fan-shaped, ellipse fan-shaped, trapezoidal, triangle or circular arc.
4. computer tomography device as claimed in claim 1 (1), wherein, described screenCovering part (16) is formed by plastics.
5. the computer tomography device as described in claim 3 or 4 (1), wherein, instituteThe geometry of stating shielding part (16) is the result of thermal deformation or produces by injection moulding.
6. computer tomography device as claimed in claim 1 (1), wherein, described archPars convoluta (19) with respect to around housing wall arching.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010006206.5A DE102010006206B4 (en) | 2010-01-29 | 2010-01-29 | Computed tomography machine |
| DE102010006206.5 | 2010-01-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102163470A CN102163470A (en) | 2011-08-24 |
| CN102163470B true CN102163470B (en) | 2016-05-04 |
Family
ID=44315949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110030878.6A Active CN102163470B (en) | 2010-01-29 | 2011-01-28 | Computer tomography device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102163470B (en) |
| DE (1) | DE102010006206B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5984248B2 (en) * | 2012-02-22 | 2016-09-06 | 東芝メディカルシステムズ株式会社 | X-ray CT gantry |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4088888A (en) * | 1977-02-25 | 1978-05-09 | General Electric Company | Gantry for computed tomography |
| CN1617688A (en) * | 2002-02-15 | 2005-05-18 | 分离成像有限责任公司 | Gantry ring with detachable segment for multidimensional X-ray-imaging |
| CN101500489A (en) * | 2006-08-09 | 2009-08-05 | 皇家飞利浦电子股份有限公司 | Gantry x-ray transmissive element |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10103331A1 (en) * | 2001-01-25 | 2002-08-14 | Siemens Ag | Storage device for an imaging medical examination device and method for its operation |
| DE10126465C1 (en) * | 2001-05-31 | 2003-01-02 | Hartmann Paul Ag | Cover for a tunnel-shaped medical facility and medical facility |
| DE112005002219A5 (en) * | 2004-09-30 | 2009-04-16 | Siemens Ag | Housing for a tomography device, comprising a receiving window and computed tomography device with such a housing |
| CN101272736B (en) * | 2005-09-27 | 2012-06-20 | 皇家飞利浦电子股份有限公司 | Containment tubes and imaging systems employing same |
| DE102005050634B4 (en) * | 2005-10-20 | 2012-01-05 | Siemens Ag | Device for a gantry of a tomography device and use of the device |
| DE102006008255B4 (en) * | 2006-02-22 | 2013-07-04 | Siemens Aktiengesellschaft | X-ray machine |
-
2010
- 2010-01-29 DE DE102010006206.5A patent/DE102010006206B4/en not_active Expired - Fee Related
-
2011
- 2011-01-28 CN CN201110030878.6A patent/CN102163470B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4088888A (en) * | 1977-02-25 | 1978-05-09 | General Electric Company | Gantry for computed tomography |
| CN1617688A (en) * | 2002-02-15 | 2005-05-18 | 分离成像有限责任公司 | Gantry ring with detachable segment for multidimensional X-ray-imaging |
| CN101500489A (en) * | 2006-08-09 | 2009-08-05 | 皇家飞利浦电子股份有限公司 | Gantry x-ray transmissive element |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010006206B4 (en) | 2020-10-08 |
| CN102163470A (en) | 2011-08-24 |
| DE102010006206A1 (en) | 2011-08-04 |
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Effective date of registration: 20220126 Address after: Erlangen Patentee after: Siemens Healthineers AG Address before: Munich, Germany Patentee before: SIEMENS AG |
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| TR01 | Transfer of patent right |