CN109316199A - A kind of collimator filter assemblies, collimator and Medical Devices - Google Patents
A kind of collimator filter assemblies, collimator and Medical Devices Download PDFInfo
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- CN109316199A CN109316199A CN201811089906.XA CN201811089906A CN109316199A CN 109316199 A CN109316199 A CN 109316199A CN 201811089906 A CN201811089906 A CN 201811089906A CN 109316199 A CN109316199 A CN 109316199A
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- filter
- collimator
- planar portions
- driving device
- assemblies
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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
- A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4035—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
Abstract
The invention belongs to CT technical field, a kind of collimator filter assemblies, collimator and Medical Devices are disclosed.Collimator filter assemblies include: the first filter device, and first filter device includes the first filter mechanism；Second filter device, second filter device include the second filter mechanism；Driving device, the driving device can drive first filter device and second filter device towards or away from movement, and the mass center of collimator filter assemblies remains unchanged in moving process.Collimator includes above-mentioned collimator filter assemblies.Medical Devices include above-mentioned collimator.Traditional filter is split into two filter mechanisms by the present invention, it is individually positioned on two filter devices, simultaneously using driving device to the synchronous driving of two filter devices, to ensure that in filter mechanism switching, the mass center of collimator filter assemblies remains unchanged, and avoids the influence to CT equipment development quality.
Description
Technical field
The present invention relates to CT technical field more particularly to a kind of collimator filter assemblies, collimator and Medical Devices.
Background technique
CT (Computed Tomography), i.e. CT scan, it be using Accurate collimation X-ray beam,
Section one by one is made at gamma-rays, ultrasonic wave etc., a certain position that human body is surrounded together with the detector high with sensitivity
The features such as scanning has sweep time fast, image clearly, can be used for the inspection of a variety of diseases.
Filter mechanism component in CT collimator is that body shape is combined to design, and main function is: one, detector being connect
The X-ray intensity received is more uniform, and picture quality can be improved, and reduces picture noise；Two, low energy X ray is absorbed, human body is reduced
Roentgen dose X.
In order to preferably reduce roentgen dose X, can all there are multiple filter mechanisms to meet different parts and difference in general CT
The scanning requirement of the patient of figure, this also just needs the ray being in use switched to different filter mechanisms in collimator
In optical path.In high-speed rotating CT, the switching of filter mechanism will lead to the variation of collimator mass center, so as to cause turning torque
Variation causes rack unbalance dynamic, causes to highlight artifact.Especially in expanded letter CT, since filter mechanism assembly volume is big, weight
Amount is high, and total kilometres are long, and the interference that equipment is imaged in mass center variation is even more serious.
Summary of the invention
The purpose of the present invention is to provide a kind of collimator filter assemblies, collimator and Medical Devices, can switch
It is constant to guarantee that mass center is stablized when filter.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of collimator filter assemblies, comprising:
First filter device, first filter device include the first filter mechanism；
Second filter device, second filter device include the second filter mechanism；
Driving device, the driving device first filter device and second filter device can be driven opposite or
It is moved away from, the mass center of collimator filter assemblies remains unchanged in moving process.
Preferably, first filter device further include:
Two the first guide rails；
Two the first sliding parts are respectively arranged on two first guide rails, and first filter mechanism is connected to institute
The first sliding part is stated, first filter mechanism is set up between two first sliding parts.
Preferably, second filter device further include:
Two the second guide rails；
Two the second sliding parts are respectively arranged on two on second guide rail, and second filter mechanism is connected to institute
The second sliding part is stated, second filter mechanism is set up between two second sliding parts.
Preferably, the driving device includes motor and the gear for being set to the motor output end, described first
The rack gear engaged with the gear is respectively arranged on filter device and second filter device.
Preferably, the driving device further includes the bogie of fixed setting, the motor is installed on the bogie
On.
Preferably, first filter mechanism includes first filter, the second filter and third filter, described
Two filter mechanisms include the 4th filter, the 5th filter and the 6th filter；The first filter, second filtering
Device, the third filter, the 4th filter, the 5th filter and the 6th filter are in Radiolucent direction
Two end faces be respectively set to planar portions and curved face part；The planar portions of first filter mechanism by the first filter,
The planar portions of second filter and the third filter are constituted, and the planar portions of second filter mechanism are by the described 4th
The planar portions of filter, the 5th filter and the 6th filter are constituted, the planar portions of first filter mechanism with
The planar portions of second filter mechanism are oppositely arranged.
Preferably, further include shell, first filter device, second filter device and the driving device point
It is not set in the shell.
Preferably, be provided with optical filtering hole on the shell, the first filter and the 4th filter can be
It is overlapped up and down at the optical filtering hole, second filter and the 5th filter can weigh up and down at the optical filtering hole
It is folded, the third filter and the 6th filter can at the optical filtering hole above and below be overlapped.
A kind of collimator, including above-mentioned collimator filter assemblies.
A kind of Medical Devices, including above-mentioned collimator.
Beneficial effects of the present invention: splitting into two filter mechanisms for traditional filter, is individually positioned in two filterings
On device, while using driving device to the synchronous driving of two filter devices, to ensure that in filter mechanism switching, collimation
The mass center of device filter assemblies remains unchanged, and avoid causes the axis direction of rack in rack high speed rotation because mass center changes
Periodic moment of flexure is generated, so that periodically shaking occurs in rack, so that artifact occurs in the inconsistent image of collimator position.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of collimator filter assemblies described in the embodiment of the present invention；
Fig. 2 is that Fig. 1 omits the structural schematic diagram after shell
Fig. 3 is the side view of filter in the prior art；
Fig. 4 is that corresponding filter weighs up and down in the first filter mechanism and the second filter mechanism described in the embodiment of the present invention
Side view when folded.
In figure:
1, the first filter device；11, the first guide rail；12, the first sliding part；
2, the second filter device；21, the second guide rail；22, the second sliding part；
3, driving device；31, motor；32, gear；33, rack gear；34, bogie；
4, shell；41, optical filtering hole；
101, first filter；102, the second filter；103, third filter；
201, the 4th filter；202, the 5th filter；203, the 6th filter.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing
The embodiment stated is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
As depicted in figs. 1 and 2, the present invention provides a kind of collimator filter assemblies, including the first filter device 1, second
Filter device 2, driving device 3 and shell 4.Wherein, the first filter device 1, the second filter device 2 and driving device 3 are distinguished
It is set in shell 4, the first filter device 1 includes the first filter mechanism, and the second filter device 2 includes the second filter mechanism, is driven
Dynamic device 3 can drive the first filter device 1 and the second filter device 2 towards or away from movement, the collimator in moving process
The mass center of filter assemblies remains unchanged.
The first filter device 1, the second filter device 2, driving device 3 and shell 4 are described in detail below.
First filter device 1 includes the first guide rail 11 and the first sliding part 12.Wherein, there are two the settings of the first guide rail 11,
Two the first guide rail 11 is parallel and compartment of terrain is set up in shell 4, and first sliding part is arranged on each first guide rail 11
12, the first filter mechanism is set up between two the first sliding parts 12, and driving device 3 can drive the first sliding part 12 along first
Guide rail 11 slides.
Second filter device 2 includes the second guide rail 21 and the second sliding part 22.Wherein, there are two the settings of the second guide rail 21,
Two the second guide rail 21 is parallel and compartment of terrain is layed in shell 4, and sliding is provided with one second cunning on each second guide rail 21
Dynamic portion 22, the second filter mechanism are set up between two the second sliding parts 22, and driving device 3 can drive 22 edge of the second sliding part
The sliding of second guide rail 21.In the present embodiment, the second sliding part 22 and the first sliding part 12 is identical in quality.
Driving device 3 includes motor 31, gear 32, rack gear 33 and bogie 34.Wherein, bogie 34 is fixed on shell
In 4, motor 31 is installed on bogie 34, and gear 32 is set to the output end of motor 31, and gear 32 is driven by motor 31 to be rotated.
There are two the settings of rack gear 33, is individually fixed on the first filter device 1 and the second filter device 2, and nibble simultaneously with 32 phase of gear
Conjunction, the first filter device 1 and the second filter device 2 are located at the two sides up and down of driving device 3.Motor 31 can pass through gear
32 and rack gear 33 be driven, the first filter device 1 of synchronous driving and the second filter device 2 are mobile.Driving device 3 removes above-mentioned motor 31
Outside structure with moving gear 32 and rack gear 33, transmission belt or motor can be driven to drive the other structures such as lead screw with motor.
First filter mechanism includes first filter 101, the second filter 102 and third filter 103, the second filter
Structure includes the 4th filter 201, the 5th filter 202 and the 6th filter 203.First filter 101, the second filter 102,
Two in Radiolucent direction of third filter 103, the 4th filter 201, the 5th filter 202 and the 6th filter 203
End face is respectively set to planar portions and curved face part.The planar portions of first filter mechanism are by first filter 101, the second filter
102 and third filter 103 planar portions constitute, the planar portions of the second filter mechanism are by the 4th filter 201, the 5th filter
202 and the 6th the planar portions of filter 203 constitute, the planar portions of the first filter mechanism are opposite with the planar portions of the second filter mechanism
Setting.In the present embodiment, first filter 101 is identical with 201 dimensions of the 4th filter, the second filter 102 and
Five filters, 202 dimensions is identical, and third filter 103 is identical with 203 dimensions of the 6th filter.
Optical filtering hole 41 is provided on shell 4, by the driving of driving device 3, first filter 101 and the 4th filter
201 can at the optical filtering hole 41 above and below be overlapped, the second filter 102 and the 5th filter 202 can be at the optical filtering hole 41 above and below
Overlapping, third filter 103 and the 6th filter 203 can at the optical filtering hole 41 above and below be overlapped.
In addition to above-mentioned setting, the first filter mechanism and the second filter mechanism can also be arranged other according to specific requirements
A meaning filter.The side view of filter is as shown in figure 3, the first filter mechanism and the second filtering in the present embodiment in the prior art
Side view when corresponding filter is overlapped up and down in mechanism is as shown in Figure 4.It is from the comparison of Fig. 3 and Fig. 4 as can be seen that and existing
There is technology different, in the present embodiment, the filter on the first filter mechanism and the second filter mechanism is arranged back-to-back, and flat face is just
Right, curvilinear plane is opposite, thus on the basis of keeping mass center constant, when so that the filter of same model being overlapped up and down, two
Space between filter is minimum.
In the present embodiment, the second sliding part 22 and the first sliding part 12 is identical in quality, so that being connected separately with
Entire collimator filter assemblies mass center is kept the second sliding part 22 and the first sliding part 12 of identical filter mechanism when moving
It is constant.
In collimator filter assemblies of the invention, traditional filter is split into two filter mechanisms identical in quality,
It is individually positioned in two kinematic mount structures.Gear & rack structure is utilized simultaneously, realizes that a motor drives two filters
The open and close movement of structure, thus ensure that filter mechanism switching when, the mass center of collimator filter assemblies remains unchanged, avoid because
Mass center changes and the axis direction of rack is caused to generate periodic moment of flexure in rack high speed rotation, so that the period occurs in rack
Property shake so that there is artifact in the inconsistent image of collimator position.
The present embodiment additionally provides a kind of collimator, including above-mentioned collimator filter assemblies.
The present embodiment additionally provides a kind of Medical Devices, including above-mentioned collimator.Specifically, medical setting is CT equipment.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of collimator filter assemblies characterized by comprising
First filter device (1), first filter device (1) include the first filter mechanism；
Second filter device (2), second filter device (2) include the second filter mechanism；
Driving device (3), the driving device (3) can drive first filter device (1) and second filter device
(2) towards or away from movement, the mass center of collimator filter assemblies is remained unchanged in moving process.
2. collimator filter assemblies according to claim 1, which is characterized in that first filter device (1) further include:
Two the first guide rails (11)；
Two the first sliding parts (12) are respectively arranged on two first guide rails (11), the first filter mechanism connection
In first sliding part (12), first filter mechanism is set up between two first sliding parts (12).
3. collimator filter assemblies according to claim 1, which is characterized in that second filter device (2) further include:
Two the second guide rails (21)；
Two the second sliding parts (22) are respectively arranged on two on second guide rail (21), the second filter mechanism connection
In second sliding part (22), second filter mechanism is set up between two second sliding parts (22).
4. collimator filter assemblies according to claim 1, which is characterized in that the driving device (3) includes motor
(31) gear (32) of the motor (31) output end, first filter device (1) and second filtering are set to and
The rack gear (33) engaged with the gear (32) is respectively arranged on device (2).
5. collimator filter assemblies according to claim 4, which is characterized in that the driving device (3) further includes fixing
The bogie (34) of setting, the motor (31) are installed on the bogie (34).
6. -5 any collimator filter assemblies according to claim 1, which is characterized in that first filter mechanism includes
First filter (101), the second filter (102) and third filter (103), second filter mechanism include the 4th filtering
Device (201), the 5th filter (202) and the 6th filter (203)；
The first filter (101), second filter (102), the third filter (103), the 4th filtering
Device (201), the 5th filter (202) and the 6th filter (203) are distinguished in two end faces in Radiolucent direction
It is set as planar portions and curved face part；
The planar portions of first filter mechanism are by the first filter (101), second filter (102) and described
The planar portions of three filters (103) are constituted, and the planar portions of second filter mechanism are by the 4th filter (201), described
The planar portions of 5th filter (202) and the 6th filter (203) are constituted, the planar portions of first filter mechanism and institute
The planar portions for stating the second filter mechanism are oppositely arranged.
7. collimator filter assemblies according to claim 6, which is characterized in that it further include shell (4), first filtering
Device (1), second filter device (2) and the driving device (3) are respectively arranged in the shell (4).
8. collimator filter assemblies according to claim 7, which is characterized in that be provided with optical filtering hole on the shell (4)
(41), the first filter (101) and the 4th filter (201) can be overlapped up and down at the optical filtering hole (41),
Second filter (102) and the 5th filter (202) can be overlapped up and down at the optical filtering hole (41), and described the
Three filters (103) and the 6th filter (203) can be overlapped up and down at the optical filtering hole (41).
9. a kind of collimator, which is characterized in that including any collimator filter assemblies of claim 1-8.
10. a kind of Medical Devices, which is characterized in that including collimator as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811089906.XA CN109316199B (en) | 2018-09-18 | 2018-09-18 | Collimator filtering component, collimator and medical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811089906.XA CN109316199B (en) | 2018-09-18 | 2018-09-18 | Collimator filtering component, collimator and medical equipment |
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| CN109316199A true CN109316199A (en) | 2019-02-12 |
| CN109316199B CN109316199B (en) | 2022-06-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720943A (en) * | 2019-12-19 | 2020-01-24 | 深圳市创谷科技发展有限公司 | Beam limiter and X-ray machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720943A (en) * | 2019-12-19 | 2020-01-24 | 深圳市创谷科技发展有限公司 | Beam limiter and X-ray machine |
| CN110720943B (en) * | 2019-12-19 | 2020-04-10 | 深圳市创谷科技发展有限公司 | Beam limiter and X-ray machine |
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| CN109316199B (en) | 2022-06-28 |
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