CN109738474A - A kind of adjustable local second-order fluorescence radiation appliance of power spectrum - Google Patents
A kind of adjustable local second-order fluorescence radiation appliance of power spectrum Download PDFInfo
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- CN109738474A CN109738474A CN201910079930.3A CN201910079930A CN109738474A CN 109738474 A CN109738474 A CN 109738474A CN 201910079930 A CN201910079930 A CN 201910079930A CN 109738474 A CN109738474 A CN 109738474A
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Abstract
The invention discloses a kind of adjustable local second-order fluorescence radiation appliances of power spectrum, including electronic emitter, target and the adjustable magnetic field generating means of magnetic direction；The electronic emitter strikes target for launching electronics beam；The magnetic field generating means are arranged on the transmission path of electron beam, for influencing focal position of the electron beam on target.The present invention changes the position of focus on target by the magnetic field transformation of magnetic field generating means, it succinctly can effectively carry out the adjusting of power spectrum, the variation of a variety of power spectrums is obtained, the multiple exposure imaging of multiple kinds of energy may be implemented in once-through operation, convenient for the subsequent image procossing for carrying out Various Complex.
Description
Technical field
X-ray application field of the present invention more particularly to a kind of adjustable local second-order fluorescence radiation appliance of power spectrum.
Background technique
X-ray generation is obtained with electronics beating target material, due to different using upper, the thickness of testee and close
Degree is all different, and is caused for X-ray penetration power demand difference, thus keep light and energy requirement to X-ray also different,
Currently, existing X-ray light pipe substantially reduces since the cost of light pipe itself is reduced with volume, different using upper, selection
Replacing light source becomes a kind of feasible program, but the scheme for replacing light source will lead to cost and increase, and complicated in some environment
Application in and be inconvenient to carry out light source replacement, while the operation of the image procossing of complexity and complicated image procossing
Related application should not be carried out.
Summary of the invention
Succinctly can effectively carry out the adjusting of power spectrum and once-through operation the object of the present invention is to provide one kind may be implemented
The multiple exposure of multiple kinds of energy is imaged, convenient for the adjustable local second-order fluorescence of power spectrum of the subsequent image procossing for carrying out Various Complex
Radiation appliance；
Realizing the technical solution of the object of the invention is, a kind of adjustable local second-order fluorescence radiation appliance of power spectrum, including electricity
Sub- transmitter, target and the adjustable magnetic field generating means of magnetic direction；The electronic emitter is used for launching electronics beam beating target
Material；The magnetic field generating means are arranged on the transmission path of electron beam, for influencing focal position of the electron beam on target.
Preferred technical solution is that the magnetic field generating means include rotating wheel and magnetic field generator；The rotating wheel can
It rotates in a circumferential direction, and there is at least two rotational positioning；The magnetic field generator includes the first permanent magnet and the second permanent magnet；Institute
It states the first permanent magnet and the second permanent magnet is symmetricly set in rotating wheel along rotating wheel axis, and the N of the first permanent magnet is extremely just
To the pole S of the second permanent magnet；The electronic emitter and target are respectively arranged on the both ends of rotating wheel, and electronic emitter emits
Electron beam passed through from rotating wheel.
The target is circle, is put together by multiple the first fan-shaped target region portions；First target region
Portion is lamination target, and each first target region portion laminated material it is different or laminated material is identical but thickness is different
Or laminated layer sequence is different.
One of them first target region portion on the target includes the Mo layer stacked gradually, zinc metal layer, iron
Metal layer and titanium coating, and the thickness G T.GT.GT ferrous metal layer of the thickness G T.GT.GT zinc metal layer of the thickness G T.GT.GT titanium coating of Mo layer
Thickness.
Another preferred technical solution is that the magnetic field generating means include fast pulley and are fixed on fast pulley outer peripheral surface
On at least two magnetic field generators；The magnetic field generator includes symmetrically arranged first electromagnet and the second electromagnet, and
And first electromagnet the pole N the second electromagnet of face the pole S；The electronic emitter and target are respectively arranged on the two of fast pulley
End, and the electron beam of electronic emitter transmitting is passed through from fast pulley.
The target includes outer part annular in shape, and the central part in the middle part of outer part is arranged in.
The outer part of the target is put together by the second target region portion in multiple circular centers of circle；Second target area
Domain portion is lamination target, and each second target region portion laminated material is different or laminated material is identical but thickness not
Same or laminated layer sequence is different.
One of them second target region portion on the outer part of the target includes the Mo layer stacked gradually, zinc gold
Belong to layer, ferrous metal layer and titanium coating, and the thickness G T.GT.GT of the thickness G T.GT.GT zinc metal layer of the thickness G T.GT.GT titanium coating of Mo layer
The thickness of ferrous metal layer.
The material of the central part of the target is tungsten.
Using above-mentioned technical proposal, the present invention has the following beneficial effects: (1) present invention passes through magnetic field generating means
Magnetic field transformation to change the position of focus on target, succinctly can effectively carry out the adjusting of power spectrum, obtain a variety of power spectrums
Variation, the multiple exposure imaging of multiple kinds of energy may be implemented in once-through operation, convenient for the subsequent image procossing for carrying out Various Complex.
(2) magnetic field generating means of the invention include rotating wheel and magnetic field generator, and rotating wheel can rotate in a circumferential direction, and have
There is at least two rotational positioning, magnetic field generator includes the first permanent magnet and the second permanent magnet, the first permanent magnet and the second permanent magnet
It is symmetricly set in rotating wheel along rotating wheel axis, and the pole S of the pole N the second permanent magnet of face of the first permanent magnet, passes through rotation
The axial-rotation of runner changes the magnetic direction of magnetic field generator, to influence the position of electron beam focus on target, Ke Yiyou
Effect superposition obtains more Energy distributions, and the different power spectrum of acquisition that can be extremely convenient and quick realizes the adjusting of power spectrum.
(3) magnetic field generating means of the invention include magnetic field generator and fast pulley, and magnetic field generator includes the first electromagnetism
Iron and the second electromagnet, the first electromagnet and the second electromagnet are arranged on fast pulley along fast pulley axisymmetrical, and first
The pole S of the pole N the second electromagnet of face of electromagnet, magnetic field generator are evenly equipped with multiple along fast pulley is circumferential on fast pulley, lead to
The magnetic field generator for crossing the different location on fast pulley successively works to change magnetic direction, to influence electron beam in target
The position of upper focus can be more convenient, faster obtain different power spectrums, realize the adjusting of power spectrum, can be in instantaneous exposure
An operation in obtain the imagings of various power spectrums, this to carry out Separation Research to different tissues to may be implemented, after being
More information and material are provided in phase image procossing.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is a schematic structural view of Embodiment 1 of the present invention.
Fig. 2 is the lamination schematic diagram of target of the invention.
The schematic diagram of the magnetic field Fig. 3 influence electron beam.
Fig. 4 is a schematic structural view of Embodiment 2 of the present invention.
Fig. 5 is that focus is located at obtained energy spectrum diagram on the central part of target.
Fig. 6 is that focus is located at obtained energy spectrum diagram in the second target region the A portion of target.
Fig. 7 is torso model exposure diagram.
Fig. 8 is the schematic diagram of focus shift.
Label in attached drawing are as follows:
Target 1, first first first target region portion 1-1b, C first of target region portion 1-1a, B of target region portion 1-1, A
Target region portion 1-1c, outer part 1-2, the second second second target of target region portion 1-2-1a, B of target region portion 1-2-1, A
Region portion 1-2-1b and the second target region C portion 1-2-1c, central part 1-3, magnetic field generating means 2, rotating wheel 2-1, magnetic field hair
Raw device 2-2, A magnetic field generator 2-2a, B magnetic field generator 2-2b, C magnetic field generator 2-2c, the first permanent magnet 2-2-1, second
Permanent magnet 2-2-2, the first electromagnet 2-2-3, the second electromagnet 2-2-4, fast pulley 2-3, Mo layer 3, zinc metal layer 4, iron
Metal layer 5, titanium coating 6, cathode 7, anode 8, light source focus 9, measured object 10, detecting plate 11.
Specific embodiment
(embodiment 1)
See Fig. 1, the adjustable local second-order fluorescence radiation appliance of the power spectrum of the present embodiment, including electronic emitter, 1 and of target
The adjustable magnetic field generating means 2 of magnetic direction.Electronic emitter strikes target 1 for launching electronics beam.Magnetic field generating means 2 are set
It sets on the transmission path of electron beam, for influencing focal position of the electron beam on target 1.
Magnetic field generating means 2 include rotating wheel 2-1 and magnetic field generator 2-2.Rotating wheel 2-1 can rotate in a circumferential direction, and have
There is at least two rotational positioning.Magnetic field generator 2-2 includes the first permanent magnet 2-2-1 and the second permanent magnet 2-2-2.First permanent magnetism
Iron 2-2-1 and the second permanent magnet 2-2-2 is arranged on rotating wheel 2-1 along rotating wheel 2-1 axisymmetrical, and the first permanent magnet 2-
The pole S of the pole N the second permanent magnet of face 2-2-2 of 2-1.Electronic emitter and target 1 are respectively arranged on the both ends of rotating wheel 2-1, and
And the electron beam of electronic emitter transmitting is passed through from rotating wheel 2-1.
Target 1 is circle, is put together by multiple the first fan-shaped target region portion 1-1.First target region portion 1-1
For lamination target, and each first target region portion 1-1 laminated material it is different or laminated material is identical but thickness is different
Or laminated layer sequence is different.
See Fig. 2, the adoptable structure of one of which of one of them the first target region portion 1-1 on target 1 is, including
Mo layer 3, zinc metal layer 4, ferrous metal layer 5 and the titanium coating 6 stacked gradually, the thickness G T.GT.GT titanium coating 6 of Mo layer 3
Thickness G T.GT.GT zinc metal layer 4 thickness G T.GT.GT ferrous metal layer 5 thickness.The above is only one of them first target areas on target 1
The citing of the adoptable structure of one of which of domain portion 1-1, is not intended to limit thickness relationship, lamination order and the material of each metal layer
Matter.
See Fig. 3,7 launching electronics beam of cathode strikes anode 8, when magnetic field is not had an effect, the azimuth averaging of electronics impact
Value should at the center of anode 8, and when the north and south poles in magnetic field generate the magnetic line of force to side propagate when, electron beam due to cut magnetic
Line of force direction occurs to deviate so that center average value is offset downward, to realize the variation of focal position.
Preferably, rotating wheel 2-1 is set there are three rotational positioning, target 1 by three the first target region portion 1-1 splits and
At the first target region A portion 1-1a, B the first target region portion 1-1b and the first target region C portion 1-1c being referred to as, when
In original positioning, focal position is offset to the first target of A by the magnetic field of application by one permanent magnet 2-2-1 and the second permanent magnet 2-2-2
Material region portion 1-1a, when reaching new positioning after rotating wheel 2-1 rotates clockwise 120 degree, in the first permanent magnet 2-2-1 and
Under the magnetic field that two permanent magnet 2-2-2 apply, focal position is offset to the first target region B portion 1-1b, when rotating wheel 2-1 rotates
At 240 degree, under the magnetic field that the first permanent magnet 2-2-1 and the second permanent magnet 2-2-2 applies, focal position is offset to the first target of C
Material region portion 1-1c.Due to the Mo layer 3 of each first target region portion 1-1, zinc metal layer 4, ferrous metal layer 5 and titanium
The lamination order of layer 6 is inconsistent, and the energy of the second-order fluorescence of generation is all different, and cooperates the rotation of magnetic direction, Neng Goufang
Just the second-order fluorescence of different-energy is efficiently obtained.
(embodiment 2)
See Fig. 4, the present embodiment is substantially the same manner as Example 1, the difference is that:
Magnetic field generating means 2 include that fast pulley 2-3 and at least two magnetic fields being fixed on fast pulley 2-3 outer peripheral surface occur
Device 2-2.Magnetic field generator 2-2 includes symmetrically arranged first electromagnet 2-2-3 and the second electromagnet 2-2-4, and first is electric
The pole S of the pole N the second electromagnet of face 2-2-4 of magnet 2-2-3.Electronic emitter and target 1 are respectively arranged on the two of fast pulley 2-3
End, and the electron beam of electronic emitter transmitting is passed through from fast pulley 2-3.
Target 1 includes outer part 1-2 annular in shape, and the central part 1-3 in the middle part of outer part 1-2 is arranged in.
The outer part 1-2 of target 1 is put together by the second target region portion 1-2-1 in multiple circular centers of circle.Second target
Region portion 1-2-1 is lamination target, and each second target region portion 1-2-1 laminated material is different or laminated material phase
Or laminated layer sequence difference different with still thickness.
One of them second target region portion 1-2-1 on the outer part 1-2 of target 1 includes the Mo layer stacked gradually
3, zinc metal layer 4, ferrous metal layer 5 and titanium coating 6, and the thickness G T.GT.GT zinc metal of the thickness G T.GT.GT titanium coating 6 of Mo layer 3
The thickness of the thickness G T.GT.GT ferrous metal layer 5 of layer 4.
The material of the central part 1-3 of target 1 is tungsten, but is not limited to tungsten, and other metals can also be used.
Preferably, there are three magnetic field generator 2-2 is evenly distributed with along fast pulley 2-3 circumferentially on fast pulley 2-3, it is referred to as A
Magnetic field generator 2-2a, B magnetic field generator 2-2b and C magnetic field generator 2-2c.Outer part 1-2 is by three the second target region portions
1-2-1 is put together, and is referred to as the second target region portion 1-2-1b of the second target region A portion 1-2-1a, B and the second target of C
Region portion 1-2-1c.When the equal no power of magnetic field generator 2-2 does not generate magnetic field, focus is located on central part 1-3.When the magnetic field A
When generator 2-2a generates magnetic field, focus is located on the portion 1-2-1a of the second target region A.Similarly, B magnetic field generator 2-2b
When work, focus is located on B magnetic field generator 2-2b, and when C magnetic field generator 2-2c works, focus is located at the second target region C
On portion 1-2-1c.By quickly changing the orientation in magnetic field, the multiple series of images of multipotency exposure can be obtained by once-through operation.Work as coke
When point is located on central part 1-3, the energy spectrum diagram that can obtain (see Fig. 5).And focus is made to fall in the second target of A when applying magnetic field
When region portion 1-2-1a, the energy spectrum diagram that can obtain (see Fig. 6).
In application in medical imaging, the disturbance due to caused by human heart bounce needs instantaneous exposure.See Fig. 7,
For example instantaneous exposure twice, the chest image (figure of low energy generation can be obtained when applying magnetic field before and after applying magnetic field
7A), the chest image (Fig. 7 B) that a high energy generates is obtained when not applying magnetic field.By after image procossing we can obtain simultaneously
Obtain the image (Fig. 7 C) of soft low density tissue and the image (Fig. 7 D) of high density bone tissue.In the image of high density bone tissue
It can be seen that there is calcification phenomenon in lung, and this phenomenon is not significant before image procossing.By multiple magnetic field generator 2-2 according to
Secondary instantaneous switching field, and instantaneous multipotency imaging, available effective auxiliary diagnosis image.
In any two magnetic field generator 2-2 switching field, the position of focus can be varied, but the variation at
The disturbance of picture is minimum.See Fig. 8, it is assumed that light source focus 9 has moved in parallel D1=1mm, and measured object 10 is apart from 9 distance of light source focus
S1=95cm, and the distance s2 of distance measurement plate 11 is 5cm.The then displacement D2 on imaging plate are as follows:
D2=D1 × s2/s1=1 × 5/95=52 microns.
Image preprocessing can be carried out by the adjustment of displacement of image.Since the pixel of detecting plate is 100 microns or more,
And disturbance of the human body respiration itself to imaging, focus shift are very faint to the influence factor of imaging.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (9)
1. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum, it is characterised in that: including electronic emitter, target (1) and
The adjustable magnetic field generating means of magnetic direction (2)；The electronic emitter is for launching electronics beam impact target (1)；The magnetic
Field generating mechanism (2) is arranged on the transmission path of electron beam, for influencing focal position of the electron beam on target (1).
2. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 1, it is characterised in that: the magnetic
Field generating mechanism (2) includes rotating wheel (2-1) and magnetic field generator (2-2)；The rotating wheel (2-1) can rotate in a circumferential direction, and
With at least two rotational positioning；The magnetic field generator (2-2) includes the first permanent magnet (2-2-1) and the second permanent magnet (2-2-
2)；First permanent magnet (2-2-1) and the second permanent magnet (2-2-2) are arranged along rotating wheel (2-1) axisymmetrical in rotating wheel
On (2-1), and the pole S of the pole N the second permanent magnet of face (2-2-2) of the first permanent magnet (2-2-1)；The electronic emitter and
Target (1) is respectively arranged on the both ends of rotating wheel (2-1), and the electron beam of electronic emitter transmitting is worn from rotating wheel (2-1)
It crosses.
3. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 2, it is characterised in that: the target
Material (1) is circle, is put together by multiple the first fan-shaped target region portions (1-1)；First target region portion (1-1)
For lamination target, and each first target region portion (1-1) laminated material is different or laminated material is identical but thickness not
Same or laminated layer sequence is different.
4. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 3, it is characterised in that: the target
One of them first target region portion (1-1) on material (1) includes the Mo layer (3) stacked gradually, zinc metal layer (4), iron
Metal layer (5) and titanium coating (6), and the thickness G T.GT.GT zinc metal layer (4) of the thickness G T.GT.GT titanium coating (6) of Mo layer (3)
Thickness G T.GT.GT ferrous metal layer (5) thickness.
5. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 1, it is characterised in that: the magnetic
Generating mechanism (2) includes fast pulley (2-3) and at least two magnetic field generators that are fixed on fast pulley (2-3) outer peripheral surface
(2-2)；The magnetic field generator (2-2) includes symmetrically arranged first electromagnet (2-2-3) and the second electromagnet (2-2-4),
And the pole S of the pole N the second electromagnet of face (2-2-4) of the first electromagnet (2-2-3)；The electronic emitter and target (1)
The both ends of fast pulley (2-3) are respectively arranged on, and the electron beam of electronic emitter transmitting is passed through from fast pulley (2-3).
6. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 5, it is characterised in that: the target
Material (1) includes outer part annular in shape (1-2), and the central part (1-3) being arranged in the middle part of outer part (1-2).
7. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 6, it is characterised in that: the target
The outer part (1-2) of material (1) is put together by the second target region portion (1-2-1) in multiple circular centers of circle；Second target
Region portion (1-2-1) is lamination target, and each second target region portion (1-2-1) laminated material is different or laminated material
Expect that identical but thickness is different or laminated layer sequence is different.
8. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 7, it is characterised in that: the target
One of them second target region portion (1-2-1) on the outer part (1-2) of material (1) include the Mo layer (3) stacked gradually,
Zinc metal layer (4), ferrous metal layer (5) and titanium coating (6), and the thickness of the thickness G T.GT.GT titanium coating (6) of Mo layer (3)
The thickness of the thickness G T.GT.GT ferrous metal layer (5) of > zinc metal layer (4).
9. a kind of adjustable local second-order fluorescence radiation appliance of power spectrum according to claim 6, it is characterised in that: the target
The material of the central part (1-3) of material (1) is tungsten.
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518000 A301, building 13, China Hisense innovation industry city, No. 12, Ganli Sixth Road, gankeng community, Jihua street, Longgang District, Shenzhen, Guangdong Province Applicant after: SHENZHEN NANUOAI MEDICAL TECHNOLOGY Co.,Ltd. Address before: 518129 room A4, Yunli mix, 1f, building 3, Yunli intelligent park, fanfa Road, Bantian street, Longgang District, Shenzhen, Guangdong Applicant before: SHENZHEN NANUOAI MEDICAL TECHNOLOGY Co.,Ltd. |