CN106611624B - A kind of preceding collimator of CT - Google Patents
A kind of preceding collimator of CT Download PDFInfo
- Publication number
- CN106611624B CN106611624B CN201710056264.2A CN201710056264A CN106611624B CN 106611624 B CN106611624 B CN 106611624B CN 201710056264 A CN201710056264 A CN 201710056264A CN 106611624 B CN106611624 B CN 106611624B
- Authority
- CN
- China
- Prior art keywords
- arc
- guide rail
- shaped guide
- light flashboard
- motor
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
- G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
- G21K1/043—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers changing time structure of beams by mechanical means, e.g. choppers, spinning filter wheels
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The present invention relates to a kind of preceding collimator of CT, the collimator case of through-hole is equipped with including case lid center, set on case lid it is parallel, be respectively arranged on through-hole left and right side, both ends be respectively arranged on case lid front and rear portions the first arc-shaped guide rail and the second arc-shaped guide rail；Set between first arc-shaped guide rail and the second arc-shaped guide rail it is parallel, respectively, both ends vertical with the first arc-shaped guide rail and the second arc-shaped guide rail pass through respectively sliding block and the first arc-shaped guide rail and the second arc-shaped guide rail cooperation the first light flashboard and the second light flashboard；First light flashboard and the second light flashboard pass through transmission mechanism respectively and are connected to first motor and the second motor.The present invention is simulated by arc-shaped guide rail and is collimated, and reaches the X-ray even width at spherical surface detector, ray utilization rate is high, and dose of radiation is low and causes image quality issues and image artifacts without scattered rays；First light flashboard and the second light flashboard can be operated independently, and compact overall structure occupies little space, and at low cost, work efficiency is high.
Description
Technical field
The invention belongs to particle or the processing techniques of ionising radiation；Irradiation unit；The technology of gamma-rays or X-ray microscope
Field, in particular to a kind of ray utilization rate is high, causes the CT of image quality issues and artifact with preceding collimator without scattered rays.
Background technique
Collimator in CT equipment belongs to an optical element for input and output for fiber optic communication optical device, main to use
In diverging light is become directional light by the structure of similar convex lens.It is general there are two former and later two collimators in CT equipment,
Wherein, preceding collimator is mainly disposed to X-ray tube front end, determines CT scan thickness.
In the prior art, the light flashboard (arc panel or plate) of collimator is typically mounted in linear guide is passed by lead screw
It is dynamic to be moved, to realize the width control to X-ray beam, but have the following problems in actual operation:
1, X-ray is after existing collimator collimation, and the X-ray width reached at spherical surface detector is uneven, in order to complete
All standing probe access, need to increase collimation crack width solution, this can bring larger dose of radiation, image quality decrease and
Image the problems such as there are artifacts；
2, using the movement of lead screw transmission control light flashboard, structure is complicated, and occupied space is big, higher cost.
Summary of the invention
Present invention solves the technical problem that being, in the prior art, the light flashboard of collimator is typically mounted in linear guide
It is moved by lead screw transmission, X-ray reaches the width unevenness at spherical surface detector by collimation, therefore visits to be completely covered
Survey device channel, need to increase collimation and crack width solution, caused by dose of radiation is larger, image quality decrease and image exist
Artifact, while the problem of structure is complicated, and occupied space is big, higher cost is moved using lead screw transmission control light flashboard, in turn
Provide a kind of preceding collimator of CT for optimizing structure.
The technical scheme adopted by the invention is that a kind of preceding collimator of CT, including collimator case, the collimator case
Case lid center is equipped with through-hole, and the case lid top is equipped with parallel the first arc-shaped guide rail and the second arc-shaped guide rail, first arc
Shape guide rail and the second arc-shaped guide rail are respectively arranged on the case lid of the through-hole left and right side, first arc-shaped guide rail and
The both ends of two arc-shaped guide rails are respectively arranged on the front and rear of case lid；It is equipped between first arc-shaped guide rail and the second arc-shaped guide rail
Parallel the first light flashboard and the second light flashboard, first light flashboard and the second light flashboard respectively with the first arc-shaped guide rail and
Two arc-shaped guide rails are vertical, the both ends of first light flashboard and the second light flashboard pass through respectively sliding block and the first arc-shaped guide rail and
Second arc-shaped guide rail is equipped with；First light flashboard and the second light flashboard pass through transmission mechanism respectively and are connected to first motor
With the second motor.
Preferably, it is equidistant between first arc-shaped guide rail and the opposite each point of the second arc-shaped guide rail, first arc
The arc radius of shape guide rail and the second arc-shaped guide rail is equal, the axle center of the cambered surface of first arc-shaped guide rail and the second arc-shaped guide rail
Line is parallel with the first light flashboard and the second light flashboard.
Preferably, first light flashboard and the second light flashboard are arc panel.
Preferably, the transmission mechanism include the first driving wheel being equipped with and the first driven wheel, the second driving wheel and
Second driven wheel, first driving wheel and the second driving wheel are respectively arranged on the motor shaft of first motor and the second motor, institute
State first motor and the second motor be respectively arranged on the case lid front end of through-hole left and right side, first driven wheel and second from
Driving wheel is respectively arranged on the case lid rear end of through-hole left and right side, and the outer sheath of first driving wheel and the first driven wheel is equipped with
The outer sheath of first synchronous belt, second driving wheel and the second driven wheel be equipped with the second synchronous belt, first synchronous belt and
Second synchronous belt is respectively arranged on first arc-shaped guide rail and the second arc-shaped guide rail side, and the left end of first light flashboard passes through
The right end of connection sheet band connection synchronous with first, second light flashboard passes through connection sheet band connection synchronous with second.
Preferably, it is respectively equipped with tensioner spring on first synchronous belt and the second synchronous belt, the two of the tensioner spring
End is set on case lid.
Preferably, the transmission mechanism includes being set to arc-shaped rack of first arc-shaped guide rail backwards to through-hole side, the arc
Rack gear is identical as the radian of first arc-shaped guide rail；The left part of first light flashboard and the second light flashboard is connected separately with
First Transition plate and the second transition plates, the First Transition plate and the second transition plates side are respectively equipped with first motor and the second electricity
Gear, the first motor and the second motor difference are arranged on the output shaft of machine, the first motor and the second motor respectively
It is engaged by gear with the arc-shaped rack.
Preferably, the First Transition plate and the second transition plates are symmetrically arranged inverted L shape bent plate, and 2 inverted L shapes are curved
The right angle of plate is oppositely arranged.
The present invention provides a kind of preceding collimators of CT for optimizing structure, are used by being arranged at the case lid center of collimator case
In the through-hole by X-ray, the first arc-shaped guide rail across case lid front and rear part and are arranged in parallel on the case lid of through-hole two sides
Parallel the first light flashboard and the second light flashboard is arranged in two arc-shaped guide rails between the first arc-shaped guide rail and the second arc-shaped guide rail, the
One light flashboard and the second light flashboard pass through sliding block respectively and move over the first arc-shaped guide rail and the cooperation of the second arc-shaped guide rail, and
First light flashboard and the second light flashboard pass through transmission mechanism respectively and are connected to first motor and the second motor.The present invention passes through arc
Guide rail simulation collimation, reaches the X-ray even width at spherical surface detector, and ray utilization rate is high, and dose of radiation is low and without scattering
Line causes image quality issues and image artifacts；The first light flashboard and the second light flashboard can be operated independently in the present invention, whole
Body is compact-sized, occupies little space, at low cost, and work efficiency is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1 in the present invention；
Fig. 2 is the main view schematic diagram of embodiment 2 in the present invention；
Fig. 3 is the diagrammatic side-view cross-sectional figure structure schematic representation of embodiment 2 in the present invention；
Fig. 4 is the three-dimensional figure structure schematic representation of embodiment 2 in the present invention.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, but protection scope of the present invention is not limited to
This.
As shown, the present invention relates to a kind of preceding collimator of CT, including collimator case, the case lid 1 of the collimator case
Center is equipped with through-hole 2, and 1 top of case lid is equipped with parallel the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4, first arc
Shape guide rail 3 and the second arc-shaped guide rail 4 are respectively arranged on the case lid 1 of 2 left and right side of through-hole, first arc-shaped guide rail
3 and second the both ends of arc-shaped guide rail 4 be respectively arranged on the front and rear of case lid 1；First arc-shaped guide rail 3 and the second arc are led
It is equipped with parallel the first light flashboard 5 and the second light flashboard 6 between rail 4, first light flashboard 5 and the second light flashboard 6 are respectively with the
One arc-shaped guide rail 3 and the second arc-shaped guide rail 4 are vertical, and the both ends of first light flashboard 5 and the second light flashboard 6 pass through cunning respectively
Block 7 is equipped with the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4；First light flashboard 5 and the second light flashboard 6 lead to respectively
It crosses transmission mechanism and is connected to first motor 8 and the second motor 9.
In the present invention, 1 center of case lid of collimator case is equipped with through-hole 2, and through-hole 2 is for passing through X-ray.
In the present invention, both ends are arranged in parallel on the case lid 1 of 2 two sides of through-hole across the first arc of 1 front and rear part of case lid
Parallel 5 He of the first light flashboard is arranged in guide rail 3 and the second arc-shaped guide rail 4 between the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4
Second light flashboard 6, with the effect of the first light flashboard 5 and the second light flashboard 6 simulation collimation, while by the first light flashboard 5 and second
The motion path of light flashboard 6 is arranged on the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4, i.e. the first light flashboard 5 and the second optical gate
The path non-rectilinear that plate 6 is opened is opened, the more conducively stepless control of the harness width of X-ray, so that reaching at spherical surface detector
X-ray even width.
It, can also be on collimator case for the ease of the first arc-shaped guide rail 3 of setting and the second arc-shaped guide rail 4 in the present invention
Armstand is set, and the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4 can be arranged directly in armstand.
In the present invention, the first light flashboard 5 and the second light flashboard 6 pass through sliding block 7 and the first arc-shaped guide rail 3 and the second arc respectively
Shape guide rail 4 cooperates, and the first light flashboard 5 and the second light flashboard 6 integrally do arc on the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4
Line movement, and the first light flashboard 5 and the second light flashboard 6 are connected to first motor 8 and the second motor 9 by transmission mechanism respectively,
That is the first light flashboard 5 and the second light flashboard 6 can be controlled separately, and carry out the fine tuning of the collimation of X-ray.
In the present invention, the first light flashboard 5 and the second light flashboard 6 are controlled using first motor 8 and the second motor 9 respectively, made
It of the invention must not only crack adjustable, and center of cracking simultaneously is adjustable, the presence of first motor 8 and the second motor 9 is full
Foot later positions accurately corrects and the other functions such as Focus tracking require.
It in the present invention, is simulated and is collimated by arc-shaped guide rail, reach the X-ray even width at spherical surface detector, ray benefit
With rate height, dose of radiation is low and causes image quality issues and image artifacts without scattered rays；First light flashboard 5 and the second light flashboard
6 can independently be operated, and compact overall structure occupies little space, and at low cost, work efficiency is high.
It is equidistant between first arc-shaped guide rail 3 and the opposite each point of the second arc-shaped guide rail 4, first arc-shaped guide rail
3 and second arc-shaped guide rail 4 arc radius it is equal, the axle center of the cambered surface of first arc-shaped guide rail 3 and the second arc-shaped guide rail 4 connects
Line is parallel with the first light flashboard 5 and the second light flashboard 6.
In the present invention, in order to guarantee X-ray equivalent width after being collimated, therefore it must assure that each point X-ray passed through
Consistency, being equidistant between the first arc-shaped guide rail 3 and the opposite each point of the second arc-shaped guide rail 4 ensure that 3 He of the first arc-shaped guide rail
Second arc-shaped guide rail 4 is in positive Y direction.
In the present invention, not only need to keep distance phase between the first arc-shaped guide rail 3 and the opposite each point of the second arc-shaped guide rail 4
Deng, while also requiring the radius of the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4 equal, cambered surface axle center is coaxial, i.e., axial connecting line with
First light flashboard 5 is parallel with the second light flashboard 6, allows the first light flashboard 5 and the second light flashboard 6 in the first arc-shaped guide rail 3
Guiding movement is carried out on the cylindrical surface of the stroke of the second arc-shaped guide rail 4.
First light flashboard 5 and the second light flashboard 6 are arc panel.
In the present invention, the first light flashboard 5 and the second light flashboard 6 are arc panel, further simulate the convex mirror of collimator,
The X-ray that all directions are scattered is aligned, while ensure that the X-ray even width reached at spherical surface detector.
In the present invention, transmission mechanism includes at least two kinds of embodiments.
Embodiment 1:
The transmission mechanism includes the first driving wheel 10 being equipped with and the first driven wheel 11, the second driving wheel 12 and
Two driven wheels 13, first driving wheel 10 and the second driving wheel 12 are respectively arranged on the motor shaft of first motor 8 and the second motor 9
On, the first motor 8 and the second motor 9 are respectively arranged on 1 front end of case lid of 2 left and right side of through-hole, and described first is driven
Wheel 11 and the second driven wheel 13 are respectively arranged on 1 rear end of case lid of 2 left and right side of through-hole, first driving wheel 10 and first
The outer sheath of driven wheel 11 is equipped with the first synchronous belt 14, and the outer sheath of second driving wheel 12 and the second driven wheel 13 is equipped with the
Two synchronous belts 15, first synchronous belt 14 and the second synchronous belt 15 are respectively arranged on first arc-shaped guide rail 3 and the second arc
The left end of 4 side of guide rail, first light flashboard 5 is connect by connection sheet 16 with the first synchronous belt 14, second light flashboard 6
Right end connect with the second synchronous belt 15 by connection sheet 16.
It is respectively equipped with tensioner spring 17 on first synchronous belt 14 and the second synchronous belt 15, the two of the tensioner spring 17
End is set on case lid 1.
In the present invention, embodiment 1, which is used, is respectively set the in the side of the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4
The form of one synchronous belt 14 and the second synchronous belt 15, and by the first light flashboard 5 and the second light flashboard 6 respectively by connection sheet 16 with
First synchronous belt 14 and the connection of the second synchronous belt 15, i.e. the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4 provide the rail of movement
Road, the first synchronous belt 14 and the second synchronous belt 15 deliver the power of movement.
In the present invention, the first synchronous belt 14 and the second synchronous belt 15 have respectively included the first driving wheel 10 and the first driven wheel
11, the second driving wheel 12 and the second driven wheel 13, wherein the first driving wheel 10 and the second driving wheel 12 are separately positioned on the first electricity
On the motor shaft of machine 8 and the second motor 9, rotation is driven by first motor 8 and the second motor 9, and then drive the first synchronous belt 14
Rotation, the first driven wheel 11 and the second driven wheel 13 with the second synchronous belt 15 it is driven so that the first light flashboard 5 and the second light
Flashboard 6 can open and close under the output of first motor 8 and the second motor 9 control.
In the present invention, in order to guarantee drive the first light flashboard 5 and the second light of the first synchronous belt 14 and the second synchronous belt 15
Tensioner spring 17 is respectively set in the power of flashboard 6 on the first synchronous belt 14 and the second synchronous belt 15, guarantees the first synchronous belt 14
With the tensioning state of the second synchronous belt 15, and then guarantee the first light flashboard 5 and the second light flashboard 6 smooth folding.Ordinary circumstance
Under, the both ends of tensioner spring 17 are arranged on case lid 1.
Embodiment 2:
The transmission mechanism includes the arc-shaped rack 18 set on the first arc-shaped guide rail 3 backwards to 2 side of through-hole, the arc-shaped rack
18 is identical as the radian of first arc-shaped guide rail 3；The left part of first light flashboard 5 and the second light flashboard 6 is separately connected
There are First Transition plate 19 and the second transition plates 20, the First Transition plate 19 and 20 side of the second transition plates are respectively equipped with the first electricity
Gear 21, first electricity are arranged on the output shaft of machine 8 and the second motor 9, the first motor 8 and the second motor 9 respectively
Machine 8 and the second motor 9 are engaged by gear 21 with the arc-shaped rack 18 respectively.
The First Transition plate 19 and the second transition plates 20 are symmetrically arranged inverted L shape bent plate, 2 inverted L shape bent plates
Right angle be oppositely arranged.
In the present invention, the form that embodiment 2 is driven with gear 21 is driven instead of the belt of embodiment 1.
In the present invention, being provided with backwards to 1 side of through-hole for the first arc-shaped guide rail 3 is identical with the radian of the first arc-shaped guide rail 3
Arc-shaped rack 18, the first light flashboard 5 and the second light flashboard 6 pass through 20 transition of First Transition plate 19 and the second transition plates respectively, the
The side of one transition plates 19 and the second transition plates 20 is respectively arranged with first motor 8 and the second motor 9, first motor 8 and second
Gear 21 is arranged on the output shaft of motor 9 respectively, gear 21 and arc-shaped rack 18 engage, when first motor 8 and the second motor 9
When work, the gear 21 on respective output shaft is sequentially driven to move on arc-shaped rack 18, so drive First Transition plate 19 and
Second transition plates 20, so that the first light flashboard 5 and the second light flashboard 6 make corresponding opening and closing movement.
In the present invention, First Transition plate 19 and the second transition plates 20 are symmetrically arranged inverted L shape bent plate.
The present invention solves in the prior art, and the light flashboard of collimator, which is typically mounted in linear guide, passes through lead screw transmission
It being moved, X-ray reaches the width unevenness at spherical surface detector by collimation, therefore in order to which probe access is completely covered, it needs
Collimation is increased to crack width solution, caused by dose of radiation is larger, image quality decrease and image are there are artifact, while benefit
The problem of structure is complicated, and occupied space is big, higher cost with the movement of lead screw transmission control light flashboard, by collimator case
The setting of 1 center of case lid is arranged in parallel on the case lid 1 of 2 two sides of through-hole for the through-hole 2 by X-ray across 1 front and rear part of case lid
The first arc-shaped guide rail 3 and the second arc-shaped guide rail 4, parallel first is set between the first arc-shaped guide rail 3 and the second arc-shaped guide rail 4
Light flashboard 5 and the second light flashboard 6, the first light flashboard 5 and the second light flashboard 6 pass through sliding block 7 and the first arc-shaped guide rail 3 and the respectively
The cooperation of two arc-shaped guide rails 4 moves over, and the first light flashboard 5 and the second light flashboard 6 are connected to the by transmission mechanism respectively
One motor 8 and the second motor 9.The present invention is simulated by arc-shaped guide rail and is collimated, and the X-ray width reached at spherical surface detector is equal
Even, ray utilization rate is high, and dose of radiation is low and causes image quality issues and image artifacts without scattered rays；First light in the present invention
Flashboard 5 and the second light flashboard 6 can be operated independently, and compact overall structure occupies little space, and at low cost, work efficiency is high.
Claims (8)
1. the case lid center of a kind of preceding collimator of CT, including collimator case, the collimator case is equipped with through-hole, feature exists
In: the case lid top is equipped with parallel the first arc-shaped guide rail and the second arc-shaped guide rail, first arc-shaped guide rail and the second arc
Shape guide rail is respectively arranged on the case lid of the through-hole left and right side, and the two of first arc-shaped guide rail and the second arc-shaped guide rail
End is respectively arranged on the front and rear of case lid；The first parallel optical gate is equipped between first arc-shaped guide rail and the second arc-shaped guide rail
Plate and the second light flashboard, first light flashboard and the second light flashboard hang down with the first arc-shaped guide rail and the second arc-shaped guide rail respectively
Directly, the both ends of first light flashboard and the second light flashboard pass through sliding block and the first arc-shaped guide rail and the second arc-shaped guide rail respectively
It is equipped with；First light flashboard and the second light flashboard pass through transmission mechanism respectively and are connected to first motor and the second motor；
The transmission mechanism includes the first driving wheel being equipped with and the first driven wheel, the second driving wheel and the second driven wheel, described
First driving wheel and the second driving wheel are respectively arranged on the motor shaft of first motor and the second motor, the first motor and second
Motor is respectively arranged on the case lid front end of through-hole left and right side, and first driven wheel and the second driven wheel are respectively arranged on through-hole
The outer sheath of the case lid rear end of left and right side, first driving wheel and the first driven wheel is equipped with the first synchronous belt, described
The outer sheath of second driving wheel and the second driven wheel is equipped with the second synchronous belt, and first synchronous belt and the second synchronous belt are set respectively
It is synchronous with first by connection sheet in the left end of first arc-shaped guide rail and the second arc-shaped guide rail side, first light flashboard
The right end of band connection, second light flashboard passes through connection sheet band connection synchronous with second.
2. a kind of preceding collimator of CT according to claim 1, it is characterised in that: first arc-shaped guide rail and the second arc
It is equidistant between the opposite each point of shape guide rail, the arc radius of first arc-shaped guide rail and the second arc-shaped guide rail is equal, described
The axial connecting line of the cambered surface of first arc-shaped guide rail and the second arc-shaped guide rail is parallel with the first light flashboard and the second light flashboard.
3. a kind of preceding collimator of CT according to claim 1, it is characterised in that: first light flashboard and the second optical gate
Plate is arc panel.
4. a kind of preceding collimator of CT according to claim 1, it is characterised in that: first synchronous belt and second synchronizes
It takes and is respectively equipped with tensioner spring, the both ends of the tensioner spring are set on case lid.
5. the case lid center of a kind of preceding collimator of CT, including collimator case, the collimator case is equipped with through-hole, feature exists
In: the case lid top is equipped with parallel the first arc-shaped guide rail and the second arc-shaped guide rail, first arc-shaped guide rail and the second arc
Shape guide rail is respectively arranged on the case lid of the through-hole left and right side, and the two of first arc-shaped guide rail and the second arc-shaped guide rail
End is respectively arranged on the front and rear of case lid；The first parallel optical gate is equipped between first arc-shaped guide rail and the second arc-shaped guide rail
Plate and the second light flashboard, first light flashboard and the second light flashboard hang down with the first arc-shaped guide rail and the second arc-shaped guide rail respectively
Directly, the both ends of first light flashboard and the second light flashboard pass through sliding block and the first arc-shaped guide rail and the second arc-shaped guide rail respectively
It is equipped with；First light flashboard and the second light flashboard pass through transmission mechanism respectively and are connected to first motor and the second motor；
The transmission mechanism includes the arc-shaped rack set on the first arc-shaped guide rail backwards to through-hole side, the arc-shaped rack and first arc
The radian of shape guide rail is identical；The left part of first light flashboard and the second light flashboard is connected separately with First Transition plate and second
Transition plates, the First Transition plate and the second transition plates side are respectively equipped with first motor and the second motor, the first motor
With gear is arranged on the output shaft of the second motor respectively, the first motor and the second motor pass through gear and the arc respectively
The engagement of shape rack gear.
6. a kind of preceding collimator of CT according to claim 5, it is characterised in that: first arc-shaped guide rail and the second arc
It is equidistant between the opposite each point of shape guide rail, the arc radius of first arc-shaped guide rail and the second arc-shaped guide rail is equal, described
The axial connecting line of the cambered surface of first arc-shaped guide rail and the second arc-shaped guide rail is parallel with the first light flashboard and the second light flashboard.
7. a kind of preceding collimator of CT according to claim 5, it is characterised in that: first light flashboard and the second optical gate
Plate is arc panel.
8. a kind of preceding collimator of CT according to claim 5, it is characterised in that: the First Transition plate and the second transition
Plate is symmetrically arranged inverted L shape bent plate, and the right angle of 2 inverted L shape bent plates is oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056264.2A CN106611624B (en) | 2017-01-25 | 2017-01-25 | A kind of preceding collimator of CT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056264.2A CN106611624B (en) | 2017-01-25 | 2017-01-25 | A kind of preceding collimator of CT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106611624A CN106611624A (en) | 2017-05-03 |
| CN106611624B true CN106611624B (en) | 2018-12-25 |
Family
ID=58636234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710056264.2A Active CN106611624B (en) | 2017-01-25 | 2017-01-25 | A kind of preceding collimator of CT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106611624B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175435B (en) * | 2018-01-09 | 2021-01-08 | 明峰医疗***股份有限公司 | Cam beam limiter applied to X-ray of detector |
| CN111513747B (en) * | 2020-04-28 | 2023-08-29 | 东软医疗***股份有限公司 | CT image acquisition method and device and CT machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2768828Y (en) * | 2005-03-04 | 2006-04-05 | 杭州华源伽玛医疗设备投资有限公司 | Gamma-ray therapeutical equipment |
| CN103271747A (en) * | 2013-05-15 | 2013-09-04 | 东软飞利浦医疗设备***有限责任公司 | Section device on CT machine and switchover regulation method |
| CN203369913U (en) * | 2013-07-12 | 2014-01-01 | 东软飞利浦医疗设备***有限责任公司 | CT machine upper slicing device with alterable ray visual field |
| CN103489496A (en) * | 2013-09-10 | 2014-01-01 | 沈阳东软医疗***有限公司 | X-ray collimating device for CT machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103829963B (en) * | 2012-11-27 | 2018-02-23 | Ge医疗***环球技术有限公司 | Collimator and the CT system comprising the collimator |
| CN206541634U (en) * | 2017-01-25 | 2017-10-03 | 明峰医疗***股份有限公司 | A kind of preceding collimaters of CT |
-
2017
- 2017-01-25 CN CN201710056264.2A patent/CN106611624B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2768828Y (en) * | 2005-03-04 | 2006-04-05 | 杭州华源伽玛医疗设备投资有限公司 | Gamma-ray therapeutical equipment |
| CN103271747A (en) * | 2013-05-15 | 2013-09-04 | 东软飞利浦医疗设备***有限责任公司 | Section device on CT machine and switchover regulation method |
| CN203369913U (en) * | 2013-07-12 | 2014-01-01 | 东软飞利浦医疗设备***有限责任公司 | CT machine upper slicing device with alterable ray visual field |
| CN103489496A (en) * | 2013-09-10 | 2014-01-01 | 沈阳东软医疗***有限公司 | X-ray collimating device for CT machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106611624A (en) | 2017-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103829963B (en) | Collimator and the CT system comprising the collimator | |
| CN106611624B (en) | A kind of preceding collimator of CT | |
| US8637841B2 (en) | Multi level multileaf collimators | |
| CN206541634U (en) | A kind of preceding collimaters of CT | |
| CN102755696B (en) | For multi-diaphragm collimator and the control method thereof of tomography radiotherapy and dynamic intensity-modulated radiation therapy | |
| CN201968693U (en) | Double-layer blade driving device for beam-limiter of X-ray apparatus | |
| CN103169492B (en) | Radiation tomographic device, checkout gear and spatial resolution changing method | |
| CN210131259U (en) | Multi-blade collimator and radiotherapy head | |
| US20200182435A1 (en) | Gradient frosting system | |
| CN103575750A (en) | Arrangement and method for inverse X-ray phase contrast imaging | |
| Schmalzl et al. | The upgrade of the cold neutron three-axis spectrometer IN12 at the ILL | |
| CN101287520B (en) | Stand for holding a radiation detector for a radiation therapy device | |
| CN102467985A (en) | X-ray collimator | |
| CN111493916A (en) | CT collimator X-ray beam stepless high-speed adjusting device and working method thereof | |
| CN111408065B (en) | Multi-leaf collimator, double-layer multi-leaf collimator and medical equipment | |
| CN102332318A (en) | First collimator adjusting device of neutron texture diffractometer | |
| WO2022143164A1 (en) | Radiation inspection system | |
| CN212847714U (en) | Front collimator shading device | |
| CN208621787U (en) | Optical fiber delay line array device | |
| CN105310711B (en) | Beam limiter of X-ray photographic system | |
| CN116847908A (en) | Treatment head and radiotherapy equipment | |
| CN209657817U (en) | A kind of variable FOV collimator of CT | |
| CN215900758U (en) | Multi-leaf collimator, treatment head and radiotherapy equipment | |
| CN116847907A (en) | Radiation therapy system | |
| CN203710037U (en) | Ray beam defining device for oral cavity CT scanning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190919 Address after: 611633 No. 863 Qingpu Road, Shou'an Town, Pujiang County, Chengdu City, Sichuan Province Patentee after: Sichuan Mingfeng Medical Technology Co., Ltd. Address before: 312099 Zhejiang province Shaoxing City Jishan Dongshan Road No. 6 Building 2-3 Patentee before: FMI Technologies Inc. |
|
| TR01 | Transfer of patent right |