CN109793531A - A multi-function self-converting multi-pinhole collimator and its operating method - Google Patents
A multi-function self-converting multi-pinhole collimator and its operating method Download PDFInfo
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- CN109793531A CN109793531A CN201910150886.0A CN201910150886A CN109793531A CN 109793531 A CN109793531 A CN 109793531A CN 201910150886 A CN201910150886 A CN 201910150886A CN 109793531 A CN109793531 A CN 109793531A
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Abstract
本发明公开了一种多功能自转换的多针孔准直器及其运行方法，包括外屏蔽组件、内屏蔽组件和运动组件；外屏蔽组件包括外屏蔽筒和外屏蔽框架，内屏蔽组件包括内屏蔽筒和内屏蔽框架，内屏蔽筒通过内屏蔽框架和外屏蔽框架套装于所述外屏蔽筒的内部；运动组件为驱动所述内屏蔽筒与外屏蔽筒沿自身中心轴产生相对位移的装置；内屏蔽筒沿自身中心轴方向设置多排针孔，并且同一排的针孔沿所述内屏蔽筒周向分布，多排所述针孔的孔径各不相同和孔间距各不相同。通过内屏蔽筒与外屏蔽筒的相对运动，实现了不同分辨率、不同视角、不同视野、不同灵敏度等多功能快速灵活的变化及切换，省去了因需要更换不同功能的准直器而去换装另一个准直器的繁琐工作。
The invention discloses a multi-function self-converting multi-pinhole collimator and its operation method, comprising an outer shielding component, an inner shielding component and a moving component; the outer shielding component includes an outer shielding cylinder and an outer shielding frame, and the inner shielding component includes The inner shielding cylinder and the inner shielding frame, the inner shielding cylinder is sleeved inside the outer shielding cylinder through the inner shielding frame and the outer shielding frame; The inner shielding cylinder is provided with multiple rows of pinholes along the direction of its own central axis, and the pinholes in the same row are distributed along the circumferential direction of the inner shielding cylinder, and the multiple rows of the pinholes have different apertures and different hole spacings. Through the relative movement of the inner shielding cylinder and the outer shielding cylinder, fast and flexible changes and switching of different resolutions, different viewing angles, different fields of view, and different sensitivities are realized, eliminating the need to replace collimators with different functions. The tedious work of changing to another collimator.
Description
Technical field
The present invention relates to collimator fields, more particularly to a kind of multi-functional more pinhole collimators and its operation side from conversion
Method.
Background technique
Nuclear medicine facility for medical treatment generally includes detector and collimator.Nuclear receptor co repressor system usually requires different function
Collimator reach different diagnostic purposes, thus need to carry out the replacement of collimator as needed.
It is more in the use of collimator in the nuclear medicine facility (mostly SPECT, PET) in hospital at present on domestic and international market
For parallel aperture collimator (LEHR-SPECT).Each collimator is mounted on a probe (detector), around acquisition target
The mode of rotation is completed to scan, and establishes three-dimensional imaging later；More pinhole collimators are used in the diagnosis of organella, mostly heart and
In thyroid gland diagnosis.Realization in equipment is also that single corresponding collimator of probe (detector) comes side by rotary scanning
Method realizes acquisition.But existing collimator function is single, when needing to switch to the collimator of other function, needs by automatic
Or manually mode removes a collimator or unload, to load onto another collimator with required function.
Summary of the invention
It is an object of the invention to propose a kind of multi-functional more pinhole collimators and its operation method from conversion, realize
Multi-functional variation and the switchings such as different resolution, different perspectives, the different visuals field, different sensitivity, eliminate because needing replacing not
The collimator of congenerous and going changes the outfit the cumbersome work of another collimator.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of multi-functional more pinhole collimators from conversion, including external shield component, inner shield component and moving parts；Institute
Stating external shield component includes external shield cylinder and external shield frame, and the inner shield component includes inner shield cylinder and inner shield frame,
The inner shield cylinder is loaded on the inside of the external shield cylinder by inner shield frame and external shield frame hub；
The moving parts are the dress that the driving inner shield cylinder and external shield cylinder generate relative displacement along central axis
It sets；
Multiple rows of pin hole is arranged along center axis direction in the inner shield cylinder, and the pin hole of same row is along the inner shield
Cylinder is circumferentially distributed, and the aperture of multiple rows of pin hole is different and pitch of holes is different；
At least row's light hole is arranged along central axis in the external shield cylinder, and the light hole of same row is along described outer
Shielding cylinder is circumferentially distributed, and the pin hole of the light hole and the inner shield cylinder is blocked by relative motion come rotation and light transmission.
Preferably, the external shield cylinder is connected with the external shield frame；The inner shield cylinder and the inner shield frame
Connection.
Preferably, the external shield cylinder is the shielding material being distributed on the peripheral wall of tubular, and the external shield frame is institute
The support construction of external shield cylinder is stated, so that external shield component generally tubular combines；
The inner shield cylinder is the shielding material being distributed on the peripheral wall of tubular, and the inner shield frame is the inner shield
The support construction of cylinder, so that inner shield component generally tubular combines.
Preferably, the moving parts include driving device and at least two one slide rails；The outer wall edge of the inner shield frame
The axis direction of inner shield cylinder is provided at least two sliding rails, and the inner wall of the sliding block of the sliding rail and external shield frame
It is connected；Alternatively, the inner wall of the external shield frame is provided at least two sliding rails along the axis direction of external shield cylinder, and
The sliding block of the sliding rail is connected with the outer wall of inner shield frame；
The driving device drives the inner shield component and the external shield component to move to axial.
Preferably, multiple rows of light hole is arranged along central axis in the external shield cylinder, and every row's light hole is one group corresponding
The pin hole, pin hole described in one group include multiple rows of pin hole, form the corresponding combination of light hole and pin hole.
Preferably, the operation method of multi-functional more pinhole collimators from conversion, it is described multi-functional from the more of conversion
Pinhole collimator drives the inner shield frame to move relative to external shield frame along sliding rail by driving device, moves to inner shield
Until required pin hole alignment light hole on cylinder, and it is corresponding with detector；
When needing to convert other pin holes, driving device drives the inner shield frame or external shield frame opposite along sliding rail
It is mobile, until moving to the pin hole alignment light hole to be converted on inner shield cylinder.
Multi-functional more pinhole collimators from conversion, by inner shield cylinder movable set in the external shield cylinder
Portion drives the inner shield cylinder to translate along central axis by moving parts, so that required row's pin hole is directed at light passing
Hole, without remaining row's pin hole be fully screened off by this outer cylinder and cover, so that row's pin hole needed for nuclear medicine facility use is swept
It retouches.When needing to be converted into the pin hole in other apertures, the inner shield cylinder is driven to translate along central axis by moving parts,
It is converted into the pin hole alignment light hole in other apertures.
To realize the switching of the pin hole of different pore size by the mutual displacement of inner shield cylinder and external shield cylinder, make more function
Can have the advantage that one, excellent comprehensive performance from more pinhole collimators of conversion: the collimator easily realizes
Switching between the multiple functions such as different resolution, different perspectives, the different visuals field, different sensitivity, the structure of different function have
The combination of machine, improves efficiency, has saved space and auxiliary device；Two, flexible choice: it is realized to same detection target spirit
The different pin holes of switching living；Three, automatic replacement, quick-replaceable: the collimator is automatically controlled using moving parts, is accomplished automatic fast
Speed replaces different pin holes, eliminates the collimator because needing replacing different function due to goes to change the cumbersome work of next collimator,
The conversion being automatically performed between different function；Four, be accurately positioned: moving parts can realize accurately pin hole positioning；Five, the collimation
The flexibility of device and convenience integrally improve efficiency aspect to human body nuclear medicine facility and provide good support.
Detailed description of the invention
The present invention will be further described for attached drawing, but the content in attached drawing does not constitute any limitation of the invention.
Fig. 1 is the multi-functional spininess hole collimator structure schematic diagram from conversion of the one of embodiment of the present invention；
Fig. 2 is the moving parts local structural graph of the one of embodiment of the present invention；
Fig. 3-A is the collimator axial movement first state figure of the one of embodiment of the present invention；
Fig. 3-B is that the collimator of the one of embodiment of the present invention moves axially the second state diagram.
Wherein: external shield component 1；Inner shield component 2；Moving parts 3；External shield cylinder 11；Inner shield cylinder 21；Pin hole 211；
Light hole 111；External shield frame 12；Inner shield frame 22；Sliding rail 31；Sliding block 32；Detector 4.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Multi-functional more pinhole collimators from conversion of the present embodiment, as shown in Figure 1, including external shield component 1, inner shield
Component 2 and moving parts 3；
The external shield component 1 includes external shield cylinder 11 and external shield frame 12, and the inner shield component 2 includes inner shield
Cylinder 21 and inner shield frame 22, the inner shield cylinder 21 are set in the external screen by inner shield frame 22 and external shield frame 12
Cover the inside of cylinder 11；
The moving parts 3 are that the inner shield cylinder 21 is driven to generate relative displacement along central axis with external shield cylinder 11
Device；
Multiple rows of pin hole 211 is arranged along center axis direction in the inner shield cylinder 21, and the pin hole 211 of same row is along institute
State that inner shield cylinder 21 is circumferentially distributed, the aperture of multiple rows of pin hole 211 is different and pitch of holes is different；
At least row's light hole 111, and the light hole 111 of same row is arranged along central axis in the external shield cylinder 11
It is circumferentially distributed along the external shield cylinder 11, the pin hole 211 of the light hole 111 and the inner shield cylinder 21 by relative motion come
Rotation is blocked and light transmission.
Multi-functional more pinhole collimators from conversion, by 21 movable set of inner shield cylinder in the external shield cylinder 11
Inside drives the inner shield cylinder 21 to translate along central axis by moving parts 3, thus by that required row's pin hole 211
Be directed at light hole 111, without remaining row's pin hole 211 be fully screened off by this outer cylinder 11 and cover, as shown in Fig. 3-A, thus nuclear medicine
That row's pin hole 211 needed for equipment use is scanned.When needing to be converted into the pin hole 211 in other apertures, pass through exercise group
Part 3 drives the inner shield cylinder 21 to translate along central axis, and the pin hole 211 for being converted into other apertures is directed at light hole 111, such as
Shown in Fig. 3-B.
To realize cutting for the pin hole 211 of different pore size by the mutual displacement of inner shield cylinder 21 and external shield cylinder 11
It changes, so that more pinhole collimators of multi-functional conversion certainly is had the advantage that one, excellent comprehensive performance: the collimator is very square
Just the switching between the multiple functions such as different resolution, different perspectives, the different visuals field, different sensitivity, different function are realized
The structure of energy organically combines, and improves efficiency, has saved space and auxiliary device；Two, flexible choice: it is realized to same
Detection target flexibly switches different pin holes 211；Three, automatic replacement, quick-replaceable: the collimator is automatic using moving parts 3
Control, accomplishes automatic quick-replaceable difference pin hole 211, goes to change due to eliminate the collimator because needing replacing different function next
The cumbersome work of collimator, the conversion being automatically performed between different function；Four, be accurately positioned: moving parts 3 can be realized accurately
Pin hole 211 positions；Five, the flexibility of the collimator and convenience integrally improve efficiency aspect to human body nuclear medicine facility and provide
It supports well.
Preferably, as shown in Figure 1, the external shield cylinder 11 and the external shield frame 12 connection；The inner shield cylinder 21
It is connected with the inner shield frame 22.
Preferably, the external shield cylinder 11 is the shielding material being distributed on the peripheral wall of tubular, the external shield frame 12
For the support construction of the external shield cylinder 11, so that external shield component generally tubular combines；
The inner shield cylinder 21 is the shielding material being distributed on the peripheral wall of tubular, and the inner shield frame 22 is in described
The support construction of shielding cylinder 21, so that inner shield component generally tubular combines.
The external shielding cylinder 11 of the external shield frame 12 plays a supporting role in protection, and is used to support (or the class of external shield cylinder 11
Tubular shielding) and moving parts sliding block 32 or certain sliding equipment；The inner shield frame 22 plays interior shielding cylinder 21
Protective effect is supported, the sliding rail 31 or certain skate machine of inner shield cylinder 21 (or shielding of class tubular) and moving parts are used to support
Structure.
Preferably, as shown in Figure 1, the external shield cylinder 11 and inner shield cylinder 21 are cylindrical shape, the external shield frame
Frame 12 and inner shield frame 22 are respectively the support construction of the external shield cylinder 11 and inner shield cylinder 21.Such structure realizes
Class tubular shielding, in order to realize acquisition by the method for rotary scanning.Class tubular shielding refer to shielding be fabricated to rule or
Shielding part is arranged to distribution on the wall of tubular in irregular cylindrical shape, or shielding.
Preferably, as shown in Figure 1, the aperture in interior 21 inner wall of shielding cylinder of the pin hole 211 is less than in interior shielding cylinder 21
The aperture of outer wall, the width in outer 11 inner wall of shielding cylinder of the light hole 111 are less than the width in outer 11 outer wall of shielding cylinder.With
Guarantee that the pin hole 211 of all rows on inner shield cylinder 21 can be transferred through light hole 111 and be in light passing state.
Preferably, as shown in Figure 1 and Figure 2, the moving parts 3 include driving device and at least two one slide rails 31, described interior
The outer wall of shielding frame 22 is provided at least two sliding rails 31, and the sliding rail 31 along the axis direction of inner shield cylinder 21
Sliding block 32 be connected with the inner wall of external shield frame 12；Alternatively, axis of the inner wall of the external shield frame 12 along external shield cylinder 11
Heart direction is provided at least two sliding rails 31, and the sliding block of the sliding rail 31 is connected with the outer wall of inner shield frame 22；
The driving device drives the inner shield component and the external shield component to move to axial.To pass through drive
Dynamic device driving sliding rail 31 and sliding block 32 move to axial, and make the inner shield component and the external shield component to axial
It is mobile.The driving device is motor, lead screw etc..
Preferably, as shown in Fig. 2, the bottom of the sliding rail 31 is equipped with sliding recess, the sliding recess runs through the cunning
The both ends of rail 31；The groove width of the sliding recess is greater than the width of the sliding block 32, and the sliding rail 31 passes through sliding recess and cunning
The movable fitting of block 32.The sliding recess plays position-limiting action to sliding rail 31, prevents the sliding rail 31 left and right in moving process
Rock and influence the alignment of pin hole 211, it is ensured that the sliding block 32 is slided along sliding rail 31.
Preferably, the driving device is electrodynamic type or pneumatic type.The sliding rail 31 and sliding block are driven by driving device
32 opposite slidings realize automatic quick-replaceable difference pin hole 211, and driving device can realize the accurately positioning of pin hole 211, to people
Body nuclear medicine facility integrally improves efficiency aspect and provides good support.
Preferably, multiple rows of light hole 111, and every row's light hole 111 is arranged along central axis in the external shield cylinder 11
Pin hole 211 described in one group corresponding, pin hole 211 described in one group include multiple rows of pin hole 211, form pair of light hole 111 and pin hole 211
It should combine.The light hole 111 and the pin hole 211 being distributed on the external shield cylinder 11 and the inner shield cylinder 21, can be with
Occur in the form of multiple groups, forms light hole 111 and combined with the correspondence of pin hole 211；Light hole 111 described in each row corresponds to one group of institute
State pin hole 211, with meet multi-detector and meanwhile acquire the needs of.
Preferably, the operation method of multi-functional more pinhole collimators from conversion:
As shown in Fig. 3-A, multi-functional more pinhole collimators from conversion drive the inner shield by driving device
Frame 22 is moved relative to external shield frame 12 along sliding rail 31, and the required pin hole 211 moved on inner shield cylinder 21 is directed at light passing
Until hole 111, the quasi- light hole 111 of the alignment probe of detector 4, and it is corresponding with detector 4；
As shown in Fig. 3-B, when needing to convert other pin holes 211, driving device drives the inner shield frame 22 or outer
Shielding frame 12 is relatively moved along sliding rail 31, and the pin hole 211 to be converted moved on inner shield cylinder 21 is directed at light hole 111 and is
Only.
The operation method of multi-functional more pinhole collimators from conversion drives the inner shield cylinder by moving parts 3
21 translate along central axis, so that required row's pin hole 211 is directed at light hole 111, without remaining row's pin hole
211, which are fully screened off by this outer cylinder 11, covers, so that row's pin hole 211 needed for nuclear medicine facility use is scanned.When needs are converted into
When the pin hole 211 in other apertures, drives the inner shield cylinder 21 to translate along central axis by moving parts 3, be converted into it
The pin hole 211 in his aperture is directed at light hole 111.Easily realize different resolution, different perspectives, the different visual field, no
With the switching between the multiple functions such as sensitivity, the structure of different function is organically combined, and improves efficiency, saved space and
Auxiliary device；It realizes and different pin holes 211 is flexibly switched to same detection target；Accomplish automatic quick-replaceable difference pin hole
211, it eliminates the collimator because needing replacing different function due to goes to change the cumbersome work of next collimator, be automatically performed difference
Conversion between function；Moving parts 3 can realize the accurately positioning of pin hole 211；Human body nuclear medicine facility is integrally improved efficiency
Aspect provides good support.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910150886.0A CN109793531B (en) | 2019-02-28 | 2019-02-28 | A multifunctional self-switching multi-pinhole collimator and its operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910150886.0A CN109793531B (en) | 2019-02-28 | 2019-02-28 | A multifunctional self-switching multi-pinhole collimator and its operation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111791179A (en) * | 2020-07-31 | 2020-10-20 | 佛山原子医疗设备有限公司 | A barrel-shaped pinhole collimator installation device for nuclear medicine equipment |
| CN111803112A (en) * | 2020-07-23 | 2020-10-23 | 佛山原子医疗设备有限公司 | A multi-ring collimator imaging structure and imaging device for full-ring SPECT |
| CN115429303A (en) * | 2022-08-24 | 2022-12-06 | 瑞石心禾(河北)医疗科技有限公司 | Cylindrical multi-pinhole collimator and imaging device thereof |
| CN116352106A (en) * | 2021-12-27 | 2023-06-30 | 上海联影医疗科技股份有限公司 | Collimator manufacturing method, collimator and tomographic imaging system |
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|---|---|
| CN109793531B (en) | 2025-06-24 |
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Application publication date: 20190524 Assignee: Ruishi Xinhe (Hebei) Medical Technology Co.,Ltd. Assignor: FOSHAN ATOMIC MEDICAL EQUIPMENT Co.,Ltd. Contract record no.: X2025980011695 Denomination of invention: A multifunctional self converting multi pinhole collimator and its operating method Granted publication date: 20250624 License type: Common License Record date: 20250625 |