CN108030503A - A kind of adjustable collimator apparatus of window center and the CT machines comprising the device - Google Patents
A kind of adjustable collimator apparatus of window center and the CT machines comprising the device Download PDFInfo
- Publication number
- CN108030503A CN108030503A CN201810049837.3A CN201810049837A CN108030503A CN 108030503 A CN108030503 A CN 108030503A CN 201810049837 A CN201810049837 A CN 201810049837A CN 108030503 A CN108030503 A CN 108030503A
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- collimator
- arm
- collimator assembly
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- 238000010008 shearing Methods 0.000 claims abstract description 32
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 230000008450 motivation Effects 0.000 claims 1
- 230000003028 elevating effect Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/06—Diaphragms
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
CT machines the present invention relates to a kind of adjustable collimator apparatus of window center and comprising the device,Belong to collimating apparatus technical field,The collimator apparatus includes front panel,4 blocks of side plates and collimation motion,Window is equipped with the center of the front panel,The collimation motion includes the identical upper collimator assembly of structure,Lower collimator assembly,Left collimator assembly and right collimator assembly,The upper collimator assembly includes driving motor,Leading screw,Collimate block and shearing frame,Positioned at upper collimator assembly,Lower collimator assembly,Collimation block in left collimator assembly and right collimator assembly is around window successively end to end composition collimation block group,The present invention is by driving motor and leading screw to act synergistically,Realize the elevating movement of collimation block,According to practical application needs,Linkage by collimating block group realizes that window size and center change,It is adaptable,Adjust smooth,Reliability is high,It is easy to commercialization.
Description
Technical field
The invention belongs to collimating apparatus technical field, relates in particular to a kind of adjustable collimator apparatus of window center and bag
CT machines containing the device.
Background technology
Radioactive ray CT system is widely used in each medical institutions and industrial nondestructive testing.In medical institutions, to by
Some region of inspection person carries out three-dimensional imaging, to help clinician to carry out accurate medical diagnosis to person under inspection；In industrial nothing
In damage detection, x-ray bombardment is carried out to checked object, the 3-D view of checked object is obtained, can clearly judge its internal structure
Or damage location, and required data can be measured.
In radioactive ray CT system, produce the radiation tube of pyramidal cone beam of radiation and the detector of detection radioactive ray surrounds quilt
The rotation of object pivot or checked object itself rotation are examined, collimation is provided with generally between radiation tube and person under inspection
Device, constrains the scope for the X-ray that radiation tube emits, it is unnecessary on the one hand to reduce by adjusting collimator slit width
Scattering, formed better image quality；On the other hand in medical system, wound of the unnecessary ray to human body can be reduced
Evil.
At present, the light flashboard (arc panel or tablet) of collimater is typically mounted on line slideway, by lead screw transmission into
Row movement, to realize the width control system to radiation beams, still, the center (center of collimation window) of radiation beams is fixed
, it is nonadjustable, cause collimate window degree of regulation be limited, do not known in some ray centers or its uncertain region be larger
In the case of, stationary window central collimator does not apply to, and the adjustable collimater of window center just compensate for this shortcoming.
The content of the invention
For a variety of deficiencies of the prior art, to solve the above-mentioned problems, it is proposed that a kind of adjustable collimation of window center
Device and the CT machines comprising the device.
To achieve the above object, the present invention provides following technical solution：
A kind of adjustable collimator apparatus of window center, including front panel, 4 blocks of side plates and collimation motion, it is described before
Window is equipped with the center of plate, 4 blocks of side plates are located at the marginal position of front panel respectively, and 4 blocks of side plates are in end to end formula
Surround the cavity for accommodating collimation motion；
The collimation motion includes identical upper collimator assembly, lower collimator assembly, left collimator assembly and the right standard of structure
Straight component, and four are respectively arranged on different side plates, the upper collimator assembly includes driving motor, leading screw, collimation block and cuts
Power frame, the shearing frame include top plate, bottom plate and be in hingedly X-type first arm of force and second arm of force, the driving motor
Output terminal is connected by leading screw with first arm of force, and the collimation block is positioned at the top of shearing frame, and the collimation block is away from shearing frame
Plane be equipped be oriented to groove, its 1 side is equipped with guide pad；
Collimation block in upper collimator assembly, lower collimator assembly, left collimator assembly and right collimator assembly around window according to
Secondary end to end composition collimation block group, and in the guiding groove of the posterior collimation block of guide pad insertion of preceding collimation block.
Further, the top plate is all provided with the top joint of second arm of force, the bottom joint of bottom plate and first arm of force
There is guide groove, the guide groove is set along the length direction of shearing frame.
Further, the top of first arm of force is hinged with top plate, its bottom is hinged with embedded on bottom plate
First sliding block of guide groove, the bottom of second arm of force are hinged with bottom plate, its top is hinged with embedded leading on top plate
To the first sliding block of groove.
Further, first arm of force and second arm of force are equipped with 2, and 2 first arm of forces are parallel and are arranged at intervals, and two
By connecting axis connection, 2 second arm of forces are parallel and are arranged at intervals for the bottom of person, and both bottoms are by connecting axis connection.
Further, the nut of the leading screw is connected with being connected the connecting shaft of the first arm of force bottom, its screw rod and driving motor
Output terminal connection.
Further, it is described be oriented to groove, the screw rod of guide groove and leading screw is arranged in parallel, the guide pad is along shearing frame
Short transverse is set.
Further, the lower section of the shearing frame is equipped with shearing frame mounting base, and the driving motor passes through motor cabinet and shearing
Frame mounting base is connected.
Further, the side plate is equipped with the guide rail parallel with the screw rod of leading screw, the following table of the shearing frame mounting base
Face is equipped with the second sliding block on guide rail.
A kind of CT machines, include above-mentioned collimator apparatus.
The beneficial effects of the invention are as follows：
By driving motor and leading screw to act synergistically, realize the elevating movement of collimation block, meanwhile, positioned at upper collimator assembly,
Collimation block guide frame, and stroke is interrelated each other in lower collimator assembly, left collimator assembly and right collimator assembly, according to reality
Border application needs, and the linkage by collimating block group realizes that window size and center change, adaptable, in addition, guide rail and second
Sliding block, which coordinates, realizes the adaptive of collimation block group, and adjusting is smooth, and reliability is high, is easy to commercialization.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the structure diagram of upper collimator assembly；
Fig. 3 is structure diagram at A in Fig. 2；
Fig. 4 is the structure diagram for collimating block；
Fig. 5 is that the collimation block combination being located in upper collimator assembly, lower collimator assembly, left collimator assembly and right collimator assembly is shown
It is intended to.
In attached drawing：Collimator assembly under 1- front panels, 2- side plates, 3- windows, the upper collimator assemblies of 4-, 5-, the left collimator assemblies of 6-,
The right collimator assemblies of 7-, 8- drivings motor, 9- collimations block, 10- shearings frame, 11- guide rails, the second sliding blocks of 12-, 13- motor cabinets, 14-
Shear frame mounting base, 15- top plates, 16- bottom plates, first arm of forces of 17-, second arm of forces of 18-, 19- guide pads, 20- guide grooves, 21-
First sliding block, 22- are oriented to groove, the nut of 23- leading screws, 24- connecting shafts.
Embodiment
It is right with reference to the attached drawing of the present invention in order to make those skilled in the art more fully understand technical scheme
Technical scheme carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist
The other similar embodiments obtained on the premise of not making creative work, should all belong to the scope of the application protection.
In addition, the direction word mentioned in following embodiments, such as " on " " under " " left side " " right side " etc. is only the direction of refer to the attached drawing, because
This, the direction word used is for illustrative and not limiting the invention.
Embodiment one：
As shown in Figure 1, a kind of adjustable collimator apparatus of window center, including 1,4 block of side plate 2 of front panel and collimation fitness machine
Structure, is equipped with window 3 at the center of the front panel 1, when the adjustable collimator apparatus of the window center is applied to CT machines, radiation
Harness passes through from window 3.4 blocks of side plates 2 are located at the marginal position of front panel 1 respectively, and 4 blocks of side plates 2 are in end to end formula
Surround the cavity for accommodating collimation motion.
The collimation motion includes identical upper collimator assembly 4, lower collimator assembly 5, left collimator assembly 6 and the right side of structure
Collimator assembly 7, and four are respectively arranged on different side plates 2, wherein, upper collimator assembly 4, lower collimator assembly 5 are parallel and opposite
Set, left collimator assembly 6 is parallel with right collimator assembly 7 and is oppositely arranged.
As shown in Figs. 1-3, the upper collimator assembly 4 includes driving motor 8, leading screw, collimation block 9 and shearing frame 10.It is described
Shear frame 10 include top plate 15, bottom plate 16 and be in hingedly X-type first arm of force 17 and second arm of force 18, the top plate 15 and bottom
Plate 16 is arranged in parallel, and the top joint of 15 and second arm of force 18 of top plate, the bottom joint of 16 and first arm of force 17 of bottom plate
The guide groove 20 set along the length direction of shearing frame 10 is equipped with, the top of first arm of force 17 and top plate 15 are hinged,
Its bottom is hinged with the first sliding block 21 of the embedded guide groove 20 on bottom plate 16, the bottom of second arm of force 18 and bottom plate
16 is hinged, its top is hinged with the first sliding block 21 of the embedded guide groove 20 on top plate 15.That is, the first sliding block 21
Slided along guide groove 20, you can realize the flexible of shearing frame 10.
Meanwhile in order to improve the stability of shearing frame 10, first arm of force, 17 and second arm of force 18 is equipped with 2,2
First arm of force, 17 parallel and interval setting, and both bottoms are connected by connecting shaft 24,2 second arm of force, 18 parallel and intervals
Set, and both bottoms are connected by connecting shaft 24.Connection of the nut 23 of the leading screw with being connected first arm of force, 17 bottom
Axis 24 is connected, its screw rod is with driving the output terminal of motor 8 to be connected, that is to say, that the output terminal of the driving motor 8 passes through silk
Thick stick, connecting shaft 24 are connected with first arm of force 17, and the screw rod for driving leading screw by driving motor 8 rotates, and then first arm of force 17 is produced
Raw motive force, promotes the first sliding block 21 to be slided along guide groove 20, meanwhile, the collimation block 9 is located at the top of shearing frame 10, into
And collimation block 9 is driven to produce displacement in vertical direction.
As shown in Figs. 1-5, plane of the collimation block 9 away from shearing frame 10, which is equipped with, is oriented to groove 22, on its 1 side
Equipped with guide pad 19, wherein, guiding groove 22, guide groove 20 and the screw rod of leading screw are arranged in parallel, 19 edge of guide pad
The short transverse for shearing frame 10 is set, that is, is oriented to groove 22 and guide pad 19 is orthogonal.Meanwhile in the present embodiment, it is described
The cross section of guide pad 19 is set to T-shaped, corresponding, and the longitudinal section for being oriented to groove 22 is also set to T-shaped, in order to guide pad
19 insertions are oriented in groove 22.Standard in upper collimator assembly 4, lower collimator assembly 5, left collimator assembly 6 and right collimator assembly 7
Straight block 9 (i.e. 4 pieces collimation blocks 9) collimates block group, and the guide pad of preceding collimation block 9 around window 3 successively end to end composition
In the guiding groove 22 of the posterior collimation block 9 of 19 insertions, that is to say, that 4 pieces of collimation guide frames, and stroke is mutual each other of block 9
Association, i.e., adjacent 2 pieces of collimation blocks 9 are orthogonal.In addition, collimation block 9 and guide pad 19 be set to high density material, as tungsten,
The materials such as lead.
In addition, the lower section of the shearing frame 10 is equipped with shearing frame mounting base 14, the driving motor 8 by motor cabinet 13 with
Shear frame mounting base 14 to be connected, that is, drive motor 8,14 integration-in-one knot of motor cabinet 13, shearing frame 10 and shearing frame mounting base
Structure.The side plate 2 is equipped with the guide rail 11 parallel with the screw rod of leading screw, and the lower surface of the shearing frame mounting base 14 is equipped with position
In the second sliding block 12 on guide rail 11, that is to say, that the second sliding block 12 can be slided along guide rail 11, realize the adaptive of collimation block group
Should.
Exemplified by following collimator assembly 5 works, illustrate that the adjusting process of window center is as follows：
Drive the screw rod that motor 8 drives leading screw to rotate, promote the first sliding block 21 to be slided along guide groove 20, and then drive accurate
Straight block 9 is moved up along vertical direction, and at this time, the width of window 3 tapers into, meanwhile, the center of window 3 is on
Move, during collimation block 9 moves up, the guiding groove 22 positioned at left collimator assembly 6 plays it guiding role, and is located at
Collimation block 9 in right collimator assembly 7 is subject to thrust vertically upward, and at this time, right collimator assembly 7 is moved up along guide rail 11,
To adapt to collimate moving up for block 9 in collimator assembly 5.Similarly, when left collimator assembly 6 and/or right collimator assembly 7 work,
The length of window 3 can be changed, while change the center of window 3.
The present invention is described in detail above, it is described above, it is only the preferred embodiments of the invention, when cannot
Limit the scope of the present invention, i.e., it is all to make equivalent changes and modifications according to the application scope, it all should still belong to covering scope of the present invention
It is interior.
Claims (9)
1. a kind of adjustable collimator apparatus of window center, it is characterised in that including front panel (1), 4 pieces of side plates (2) and collimation fortune
Motivation structure, window (3) is equipped with the center of the front panel (1), and 4 blocks of side plates (2) are located at the edge of front panel (1) respectively
Position, and 4 pieces of side plates (2) surround the cavity for accommodating collimation motion in end to end formula；
The collimation motion include the identical upper collimator assembly (4) of structure, lower collimator assembly (5), left collimator assembly (6) and
Right collimator assembly (7), and four are respectively arranged on different side plate (2), the upper collimator assembly (4) include driving motor (8),
Leading screw, collimation block (9) and shearing frame (10), the shearing frame (10) include top plate (15), bottom plate (16) and hingedly in X-types
First arm of force (17) and second arm of force (18), the output terminal of the driving motor (8) are connected by leading screw with first arm of force (17),
Positioned at the top of shearing frame (10), the plane of the collimation block (9) away from shearing frame (10) is equipped with to be oriented to the collimation block (9)
Groove (22), its 1 side are equipped with guide pad (19)；
Collimation block (9) in upper collimator assembly (4), lower collimator assembly (5), left collimator assembly (6) and right collimator assembly (7)
Block group, and the embedded posterior standard of guide pad (19) of preceding collimation block (9) are collimated around window (3) successively end to end composition
In the guiding groove (22) of straight block (9).
2. collimator apparatus according to claim 1, it is characterised in that the top plate (15) and the top of second arm of force (18)
Joint, the bottom joint of bottom plate (16) and first arm of force (17) are equipped with guide groove (20), the guide groove (20) along
The length direction for shearing frame (10) is set.
3. collimator apparatus according to claim 2, it is characterised in that the top of first arm of force (17) and top plate
(15) hinged, its bottom is hinged with the first sliding block (21) of the embedded guide groove (20) on bottom plate (16), second power
The bottom of arm (18) is hinged with bottom plate (16), its top is hinged with the first cunning of the embedded guide groove (20) on top plate (15)
Block (21).
4. collimator apparatus according to claim 3, it is characterised in that first arm of force (17) and second arm of force (18) are equal
Equipped with 2,2 first arm of forces (17) are parallel and are arranged at intervals, and both bottoms are connected by connecting shaft (24), 2 second
The arm of force (18) is parallel and is arranged at intervals, and both bottoms are connected by connecting shaft (24).
5. collimator apparatus according to claim 4, it is characterised in that the nut (23) of the leading screw is with being connected first arm of force
(17) connecting shaft (24) of bottom is connected, its screw rod is connected with the output terminal of driving motor (8).
6. collimator apparatus according to claim 3, it is characterised in that guiding groove (22), guide groove (20) and the silk
The screw rod of thick stick is arranged in parallel, and the guide pad (19) is set along the short transverse of shearing frame (10).
7. according to any collimator apparatuses of claim 1-6, it is characterised in that the lower section of the shearing frame (10), which is equipped with, cuts
Power frame mounting base (14), the driving motor (8) are connected by motor cabinet (13) and shearing frame mounting base (14).
8. collimator apparatus according to claim 7, it is characterised in that the side plate (2) is equipped with the screw rod phase with leading screw
Parallel guide rail (11), the lower surface of the shearing frame mounting base (14) are equipped with the second sliding block (12) on guide rail (11).
9. a kind of CT machines, it is characterised in that include any collimator apparatuses of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810049837.3A CN108030503A (en) | 2018-01-18 | 2018-01-18 | A kind of adjustable collimator apparatus of window center and the CT machines comprising the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810049837.3A CN108030503A (en) | 2018-01-18 | 2018-01-18 | A kind of adjustable collimator apparatus of window center and the CT machines comprising the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108030503A true CN108030503A (en) | 2018-05-15 |
Family
ID=62096400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810049837.3A Pending CN108030503A (en) | 2018-01-18 | 2018-01-18 | A kind of adjustable collimator apparatus of window center and the CT machines comprising the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108030503A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827984A (en) * | 2018-06-12 | 2018-11-16 | 中国原子能科学研究院 | A kind of alternating expression irradiation field zoom collimator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171645A (en) * | 2005-05-06 | 2008-04-30 | 德国癌症研究中心 | Collimator for defining a beam of high-energy rays |
| CN101403803A (en) * | 2008-10-29 | 2009-04-08 | 清溢精密光电（深圳）有限公司 | Iris diaphragm and diaphragm regulating method |
| CN102973289A (en) * | 2012-12-24 | 2013-03-20 | 重庆华伦弘力实业有限公司 | Beam limiting device |
| CN103106943A (en) * | 2012-12-08 | 2013-05-15 | 成都威铭科技有限公司 | Variable field collimator |
| CN103106942A (en) * | 2012-11-15 | 2013-05-15 | 成都威铭科技有限公司 | Variable field collimator |
| US20150078516A1 (en) * | 2013-09-19 | 2015-03-19 | Kabushiki Kaisha Toshiba | X-ray diagnostic apparatus |
| CN107145171A (en) * | 2017-06-13 | 2017-09-08 | 温州大学 | A kind of electric expansion bar tractive force size intelligent controlling device and method |
| CN208551836U (en) * | 2018-01-18 | 2019-03-01 | 中国工程物理研究院应用电子学研究所 | A kind of adjustable collimator apparatus of window center and the CT machine comprising the device |
-
2018
- 2018-01-18 CN CN201810049837.3A patent/CN108030503A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171645A (en) * | 2005-05-06 | 2008-04-30 | 德国癌症研究中心 | Collimator for defining a beam of high-energy rays |
| CN101403803A (en) * | 2008-10-29 | 2009-04-08 | 清溢精密光电（深圳）有限公司 | Iris diaphragm and diaphragm regulating method |
| CN103106942A (en) * | 2012-11-15 | 2013-05-15 | 成都威铭科技有限公司 | Variable field collimator |
| CN103106943A (en) * | 2012-12-08 | 2013-05-15 | 成都威铭科技有限公司 | Variable field collimator |
| CN102973289A (en) * | 2012-12-24 | 2013-03-20 | 重庆华伦弘力实业有限公司 | Beam limiting device |
| US20150078516A1 (en) * | 2013-09-19 | 2015-03-19 | Kabushiki Kaisha Toshiba | X-ray diagnostic apparatus |
| CN107145171A (en) * | 2017-06-13 | 2017-09-08 | 温州大学 | A kind of electric expansion bar tractive force size intelligent controlling device and method |
| CN208551836U (en) * | 2018-01-18 | 2019-03-01 | 中国工程物理研究院应用电子学研究所 | A kind of adjustable collimator apparatus of window center and the CT machine comprising the device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827984A (en) * | 2018-06-12 | 2018-11-16 | 中国原子能科学研究院 | A kind of alternating expression irradiation field zoom collimator |
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