CN204925368U - A radio frequency emission coil and magnetic resonance imaging equipment for magnetic resonance imaging equipment - Google Patents
A radio frequency emission coil and magnetic resonance imaging equipment for magnetic resonance imaging equipment Download PDFInfo
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- CN204925368U CN204925368U CN201520606678.4U CN201520606678U CN204925368U CN 204925368 U CN204925368 U CN 204925368U CN 201520606678 U CN201520606678 U CN 201520606678U CN 204925368 U CN204925368 U CN 204925368U
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Abstract
The utility model provides a radio frequency emission coil and the magnetic resonance imaging equipment of magnetic resonance imaging equipment. The radio frequency emission coil includes a coil fixing device, is used for fixing the radio frequency emission coil, wherein, coil fixing device is fixed in an arrangement on the floor of magnetic resonance imaging equipment. The utility model discloses a with the snap -on of radio frequency emission coil on the floor for the radio frequency emission coil not with magnetic resonance imaging equipment on magnet contact, can thoroughly keep apart the magnet vibration like this, because gradient coil vibration and the pseudo - shadow of image that arouses when preventing formation of image scanning.
Description
Technical field
The utility model relates to medical imaging techniques field, particularly a kind of radio-frequency sending coil for MR imaging apparatus and MR imaging apparatus.
Background technology
Magnetic resonance imaging (MRI) technology utilizes the hydrogen nuclei in tissue (proton) in magnetic field, be subject to the excitation of radio-frequency pulse and nmr phenomena occurs, produce magnetic resonance signal, through the imaging technique of the image of a certain aspect of robot calculator processing reconstructed human body.
MR imaging apparatus is the imaging device based on mr imaging technique, and the advantages such as image resolution ratio is high, inspection is comprehensive, hurtless measure that it has, therefore, at medical imaging field, are widely used.
Fig. 1 is a kind of structural drawing of existing MR imaging apparatus.As shown in Figure 1, existing magnetic resonance equipment comprises superconducting magnet 1, gradient coil 2, radio-frequency sending coil 3, bed board 4 and the supporting construction 5 with through hole, wherein, gradient coil 2 is mounted and fixed in the through hole of superconducting magnet 1, radio-frequency sending coil 3 to be arranged in gradient coil 2 and to be fixed on superconducting magnet 1 by supporting construction 5, and bed board 4 is movably arranged on radio-frequency sending coil 3 and can move by the centerline direction along through hole in the through hole of superconducting magnet 1.
But existing radio-frequency sending coil 3 is directly fixed in magnet superconduction 1 by supporting construction 5, like this, in actual applications, following problem will be brought:
Carry out in the process scanned in MR imaging apparatus, the vibration of radio-frequency sending coil 3 can cause the vibration of sick bed 4, the vibration of sick bed 4 artifact that caused scan image to occur, causes figure fuzzy, disturbs doctor to the objective judgement of scanning result and then cause mistaken diagnosis or fail to pinpoint a disease in diagnosis.Specifically, why radio-frequency sending coil 3 can shake, because radio-frequency sending coil 3 and gradient coil 2 are all fixed in superconducting magnet 1, so, in scanning process, the vibration of gradient coil 2 can be delivered to radio-frequency sending coil 3 from superconducting magnet 1, and correspondingly, the vibration of radio-frequency sending coil 3 can be delivered on bed board 4.
At present, in order to reduce the scan image artifact in magnetic resonance imaging, usually take following two kinds of methods:
First method increases resilient material in superconducting magnet 1 and the junction of radio-frequency sending coil 3;
Second method increases damping spring damping structure in the bottom of superconducting magnet 1.
Said method, all to weaken for the purpose of the vibration in superconducting magnet 1, reduces the vibration of radio-frequency sending coil by the transmission reducing vibration.But inventor finds, when gradient coil 2 is operated in strong load, these ways are all difficult to effectively completely cut off the vibration in superconducting magnet 1, thus, vibration proof poor effect.
Therefore, be necessary to develop a kind of stationary installation and the MR imaging apparatus that can avoid radio-frequency sending coil generation vibration, vibrate to reduce superconducting magnet the artifact effects brought to scan image.
Utility model content
The purpose of this utility model is to provide a kind of radio-frequency sending coil for MR imaging apparatus and MR imaging apparatus, to solve the problem of vibration proof poor effect in prior art, thus improves picture quality.
For solving the problems of the technologies described above, the utility model provide firstly a kind of radio-frequency sending coil for MR imaging apparatus, described radio-frequency sending coil comprises a coil fixing device, for fixing described radio-frequency sending coil, described coil fixing device is fixed on the floor of the described MR imaging apparatus of an arrangement.
Optionally, in described radio-frequency sending coil, described coil fixing device comprises support and web member, described web member comprises the first web member and the second web member, described support connects described radio-frequency sending coil by described first web member, meanwhile, described support is fixed on described floor by described second web member.
Optionally, in described radio-frequency sending coil, the quantity of described support is two, and two described Bracket setting are at the relative two ends of described radio-frequency sending coil, and each described support is used for radial fixing described radio-frequency sending coil.
Optionally, in described radio-frequency sending coil, described support is a framed structure.
Optionally, in described radio-frequency sending coil, described support comprises an adjusting mechanism, for adjusting the installation site of described radio-frequency sending coil.
Optionally, in described radio-frequency sending coil, described coil fixing device comprises an attenuation pad, described attenuation pad be arranged on settle described MR imaging apparatus floor on.
Secondly, the utility model additionally provides a kind of MR imaging apparatus, comprise magnet, gradient coil, radio-frequency sending coil and bed board, described gradient coil is arranged in described magnet, and fixed installation on the magnet, described radio-frequency sending coil is arranged in described gradient coil, is fixed on floor by coil fixing device, guide rail is provided with, for supporting described bed board in described radio-frequency sending coil.
Optionally, in described MR imaging apparatus, described MR imaging apparatus also comprises an adjusting gear, for adjusting the installation site of described radio-frequency sending coil.
Again, the utility model separately provides a kind of MR imaging apparatus, comprise magnet, gradient coil and RF-reflective coil, described gradient coil is arranged in described magnet, described MR imaging apparatus also comprises the coil fixing device extended along the vertical direction, described radio-frequency sending coil is supported by described coil fixing device, and is suspended in described gradient coil, and described coil fixing device is separated setting with described magnet with gradient coil respectively in the axial direction.
Optionally, in described MR imaging apparatus, described MR imaging apparatus comprises two coil fixing devices, and described two coil fixing devices are arranged in the opposite end, front and back of described magnet respectively, and contiguous floor, the bottom of at least one coil fixing device.
Compared to prior art, the radio-frequency sending coil for MR imaging apparatus that the utility model provides and MR imaging apparatus, have following beneficial effect:
1, the utility model is by being directly fixed on radio-frequency sending coil on floor, compared to prior art radio-frequency sending coil is directly fixed on the magnet in MR imaging apparatus, make radio-frequency sending coil not with magnet contact, thoroughly can isolate magnet vibration like this, because gradient coil vibrates the image artifacts caused when preventing image scanning, improve picture quality;
2, coil fixing device of the present utility model adopts support and web member to realize the fixing of radio frequency transmitting coil, and structure is simple, and processing cost is low, installs, easy to operate;
3, coil fixing device of the present utility model is by arranging attenuation pad, avoids floor and radio-frequency sending coil to occur resonance, has thoroughly isolated floor vibration, improve image quality.
Accompanying drawing explanation
Fig. 1 is the perspective view of existing MR imaging apparatus;
Fig. 2 is the radio-frequency sending coil of the utility model embodiment one is assemblied in MR imaging apparatus perspective view by coil fixing device;
Fig. 3 is the left view of the coil fixing device shown in Fig. 2;
Fig. 4 is the A place partial enlarged drawing of the coil fixing device shown in Fig. 2;
Fig. 5 is the A place partial enlarged drawing that the adjusting gear of the utility model embodiment two is assemblied in MR imaging apparatus.
Embodiment
In the radio-frequency sending coil for MR imaging apparatus that the utility model provides and MR imaging apparatus, described radio-frequency sending coil comprises a coil fixing device, described coil fixing device is a free-standing structure, the radio-frequency sending coil that MR imaging apparatus uses can be directly fixed on the floor of the described MR imaging apparatus of an arrangement by it, radio-frequency sending coil is not connected with the magnet in MR imaging apparatus, therefore the vibration being passed to magnet by gradient coil has thoroughly been completely cut off, thus avoid radio-frequency sending coil, and operate in the vibration that the sick bed on radio-frequency sending coil causes because of gradient coil, thus improve the stability of B1 field (i.e. radio-frequency field), decrease image artifacts, improve picture quality.
For making the purpose of this utility model, advantage and feature clearly, below in conjunction with accompanying drawing 1 ~ 5, the radio-frequency sending coil for MR imaging apparatus that the utility model proposes and MR imaging apparatus are described in further detail.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, aid illustration the utility model embodiment lucidly.
Embodiment one
The radio-frequency sending coil that Fig. 2 provides the present embodiment is assemblied in the perspective view in MR imaging apparatus by coil fixing device.
As shown in Figure 2, the radio-frequency sending coil of the present embodiment comprises coil fixing device, and described coil fixing device extends along the vertical direction.Such as described coil fixing device comprises support 11 and web member, described web member comprises the first web member and the second web member, described support 11 is fixed on floor by described second web member, and the radio-frequency sending coil 12 (also known as body coil) connected by described first web member again in MR imaging apparatus, radio-frequency sending coil 12 is directly fixed on floor by support 11, and described coil fixing device is separated setting with magnet 13 with gradient coil 14 respectively in the axial direction, thus the thoroughly isolated vibration being passed to radio-frequency sending coil 12 by other structure members in MR imaging apparatus.
In the present embodiment, described MR imaging apparatus comprises radio-frequency sending coil 12, magnet 13, gradient coil 14 and bed board 15, wherein, the central authorities of described magnet 13 have through hole, described gradient coil 14 is fixedly installed in described through hole, described radio-frequency sending coil 12 is arranged in gradient coil 14, and described bed board 15 is positioned at radio-frequency sending coil 12, and is supported by the track on radio-frequency sending coil 12.
Herein, described support 11 and web member are used as the object lesson of the coil fixing device in the utility model.Especially, described support 11 is a free-standing structure, and it is arranged on the floor of an arrangement MR imaging apparatus.Have again, except radio-frequency sending coil 12, described support 11 does not contact with any other structure member in MR imaging apparatus, and other structure members described comprise magnet 13, gradient coil 14 and bed board 15 etc., with the vibration produced during completely isolated MR imaging apparatus work.
In the present embodiment, the quantity of described support 11 is two, and two supports 11 are arranged on the relative two ends of radio-frequency sending coil 12, are namely configured in the two ends that magnet 13 is relative, and each support 11 is for radial fixed support radio-frequency sending coil 12.But as long as these supports 11 can reliably fixed support radio-frequency sending coil 12, the quantity of described support 11 can be less than or more than four.And the utility model is also not limited to support 11 by radial manner fixed support radio-frequency sending coil 12.
In preferred version, each support 11 is a framed structure, is beneficial to processing and manufacturing, reduces manufacturing cost.Preferred, each framed structure comprises a base 111, two montants 112 and two cross bars 113, described two cross bars 113 are side by side up and down to be arranged between two montants 112, and be fixedly connected with two montants 112, a described base 111 is arranged on the bottom of two montants 112, and is fixedly connected with two montants 112.The support 11 of the present embodiment adopts rod member to combine, and structure is simple, easy to make.
As preferred embodiment, each framed structure also comprises two braces 114, one end of every root brace 114 is fixedly connected with a montant 112, and the other end is fixedly connected with a base 111, like this, the rigidity of structure and the intensity of framed structure can be strengthened by two braces 114, guarantee good vibration proof effect.
Fig. 3 is the left view of the coil fixing device shown in Fig. 2.As shown in Figure 3, each framed structure also comprises two pieces of floors 115, and every block floor 115 is fixedly connected with a base 111 and a montant 112.Adopt floor, can the rigidity of structure of lifting frame structure and intensity further.Optionally, two pieces of floors 115 all adjacent magnet 13, and symmetrical relative to the vertical axis of framed structure.
Fig. 4 is the A place partial enlarged drawing of the coil fixing device shown in Fig. 2.As shown in Figure 4, the present embodiment first web member comprises the first bolt 116 and the second bolt 117, and wherein, the quantity of described first bolt 116 and the second bolt 117 is multiple, with consistent with the quantity of montant 112.Especially, the top of every root montant 112 is provided with first bolt 116, and is withstood the lateral surface of radio-frequency sending coil 12 by the head of the first bolt 116 simultaneously.
Concrete, the top of every root montant 112 is provided with a threaded hole, and the afterbody of described first bolt 116 screws in a described threaded hole, and is threaded with corresponding montant 112; After the head of described first bolt 116 withstands the outside of radio-frequency sending coil 12 simultaneously, described radio-frequency sending coil 12 is threaded with the first corresponding bolt 116 by second bolt 117, and radio-frequency sending coil 12 is fixed together with corresponding montant 112.
Optionally, each first bolt 116 is an outer-hexagonal bolt, and each second bolt 117 is a hexagon socket head cap screw.And every root montant 112 is fixedly connected with radio-frequency sending coil 12 all in the above described manner.
Continue with reference to figure 2, second web member of the present embodiment comprises multiple foot bolt 118, for connecting described floor and support 11.Specifically, the base 111 of said frame structure is provided with multiple foot bolt 118, described base 111 is directly fixed on floor by multiple foot bolt 118.Preferably, the quantity of described foot bolt 118 is two, and is symmetrically distributed on base 111.
The web member of the present embodiment adopts bolt fixed support 11 and radio-frequency sending coil 12, and is fixed on floor by bolt by support 11 simultaneously, and structure is simple, installs, easy to use.
In addition, in order to the inspection area of the examined object ensureing carrying on bed board 15 is corresponding with the detection position of radio-frequency sending coil 12, the support 11 of the present embodiment also comprises an adjusting mechanism, described adjusting mechanism is by regulating the level height of radio-frequency sending coil 12, radial and axial position, radio-frequency sending coil 12 can be made accurately to be arranged in MR imaging apparatus, to guarantee image quality.It is such as the horizontal setting height(from bottom) being regulated radio-frequency sending coil 12 by the first bolt 116.Again such as, support 11 arranges waist pore structure, regulated the radial and axial position of radio-frequency sending coil 12 by described waist pore structure.
In addition, in order to avoid MR imaging apparatus work time, the vibration on floor passes to radio-frequency sending coil 12 by coil fixing device, the coil fixing device of the present embodiment also adds by floor the vibration that frequency is different from the vibration of the resonant frequency of radio-frequency sending coil 12 by a damping mechanism decay is a kind of, namely avoids floor and radio-frequency sending coil to occur resonance.Preferably, described damping mechanism is an attenuation pad, arranges conveniently.Between the placement surface that described attenuation pad is clipped in the floor of settling MR imaging apparatus and the base 111 of framed structure.Described attenuation pad is such as a plate with predetermined thickness made with elastomeric material.Adopt attenuation pad to decay the vibration applied by placement surface, and thus prevent vibration passing to support 11.
To sum up, the coil fixing device of the present embodiment is including, but not limited to support, as long as radio-frequency sending coil 12 can independently be fixedly installed on floor by described coil fixing device, and described coil fixing device has enough rigidity and is securely fixed on floor.In addition, the framed structure that the support 11 of the present embodiment provides including, but not limited to above-described embodiment, only need be convenient to the installation of support 11 and easy to process.In addition, the framed structure of the present embodiment does not limit the connected mode between the quantity of rod member and rod member yet, as long as can ensure that the rigidity of structure of framed structure and intensity just can.
Embodiment two
Continue with reference to figure 2, present embodiments provide a kind of MR imaging apparatus, it comprises the radio-frequency sending coil 12 that as above embodiment provides.
The MR imaging apparatus of the present embodiment owing to being directly fixed on floor by radio-frequency sending coil, and then has thoroughly isolated magnet vibration, and image quality is high.
Except radio-frequency sending coil 12, described MR imaging apparatus also comprises magnet 13, gradient coil 14 and the bed board 15 with through hole, described gradient coil 14 is arranged in described through hole, and be fixed on magnet 13, described radio-frequency sending coil 12 is arranged in gradient coil 14, and be directly fixed on floor by coil fixing device, guide rail is provided with in described radio-frequency sending coil 12, for bed board 15, described bed board 15 is arranged on can relative to radio-frequency sending coil 12 axially-movable in described through hole.Wherein, described bed board 15 can carry examined object.
Optionally, described magnet 13 adopts a permanent magnet.In other embodiments, described magnet 13 also can adopt the magnet of induced field as superconducting magnet or resistive magnet.In addition, described radio-frequency sending coil 12 comprises the transmit direction of the radio-frequency sending coil by inspection area and a described rf wave of reception that rf wave is transmitted into human body by from the described RF receiving coil being subject to the radiofrequency signal of inspection area radiation.But, depend on that, by inspection area or coil shape, described radio-frequency sending coil and RF receiving coil also can use same coil.
In the present embodiment, certain air gap (such as 1 ~ 2 centimetre) is preferably provided with between described gradient coil 14 and radio-frequency sending coil 12, so that radio-frequency sending coil 12 is mechanically separated with gradient coil 14, and therefore prevent from the vibration of gradient coil 14 to be sent to radio-frequency sending coil 12.Like this, the vibration effect produced when can prevent gradient coil 14 from working, improves image image quality.
Preferably, described MR imaging apparatus also comprises an adjusting gear, for adjusting the concrete installation site of radio-frequency sending coil 12, ensures image quality.Because the inspection area that is subject to of examined object needs accurately corresponding with the detection position of radio-frequency sending coil 12 on bed board 15, thus, an adjusting gear is needed to regulate the installation site of radio-frequency sending coil 12.
Such as can select one of them or both in the adjusting gear of adjusting mechanism in embodiment one coil stationary installation and the present embodiment, the installation site of radio frequency transmitting coil 12 adjusts, to ensure assembly precision.
When selecting the adjusting gear of the present embodiment, it is to be noted that before the described coil fixing device of assembling, axial, the radial and upper and lower installation site of radio-frequency sending coil 12 in MR imaging apparatus need be adjusted in advance, described coil fixing device could be assembled afterwards, thus ensure the installation accuracy of radio-frequency sending coil 12.Herein, it is movable along the axis direction of magnet 13 that so-called " axis " refers to described radio-frequency sending coil 12, so-called " radial direction " refers to described radio-frequency sending coil 12 and moves horizontally along the radial direction of magnet 13, while described is the height of described radio-frequency sending coil 12 relative to floor up and down.
Preferably, the quantity of the adjusting gear of the present embodiment is multiple.And be provided with two adjusting gears at the two ends that radio-frequency sending coil 12 is relative, namely every one end of radio-frequency sending coil 12 is provided with two adjusting gears, two adjusting gears of every one end are symmetrically distributed in the outside of radio-frequency sending coil 12.
Preferably, each adjusting gear comprises a fixed block 119 and multiple bolt, to regulate the installation site of radio-frequency sending coil 12 in MR imaging apparatus by fixed block 119 and bolt, specifically as shown in Figure 5.
Fig. 5 is the A place partial enlarged drawing that adjusting gear is assemblied in MR imaging apparatus.As shown in Figure 5, before installation coil fixing device, in order to correctly install radio-frequency sending coil 12, described radio-frequency sending coil 12 in advance by fixed block 119 be bolted on magnet 13, and regulates the axial, radial of radio-frequency sending coil 12 and upper-lower position by bolt.
Optionally, the bolt of the present embodiment comprises the 3rd bolt 120, the 4th bolt 121 and the 5th bolt 122.Wherein, described 3rd bolt 120 is vertically arranged on fixed block 119, for regulating the level height of radio-frequency sending coil 12.After adjusting level height, described radio-frequency sending coil 12 is fixedly connected with fixed block 119 by the 3rd bolt 120 with the 5th bolt 122.Specifically, be provided with helicitic texture inside and outside described 3rd bolt 120, described 5th bolt 122 coordinates with the female thread structure of the 3rd bolt 120 and is fastenedly connected, and described 3rd bolt 120 coordinates with the external thread structure of fixed block 119 and is fastenedly connected.More select, described 3rd bolt 120 is an outer-hexagonal bolt, and described 4th bolt 121 and the 5th bolt 122 are hexagon socket head cap screw.
Further, in order to regulate axis and the radial position of radio-frequency sending coil, described fixed block 119 is provided with waist pore structure.Waist pore structure can realize the adjustment of axis and radial position simultaneously, and structure is simple, easy to adjust.In addition, in order to strengthen constant intensity, the quantity of described waist pore structure is set to two, and is intervally arranged up and down.After adjusting axis and radial position, the afterbody of described 4th bolt 121 passes waist pore structure and is fastenedly connected with magnet 13 threaded engagement.
As preferred embodiment, the MR imaging apparatus of the present embodiment also comprises sick bed bracing or strutting arrangement, for fixed support bed board 15, wherein, described sick bed bracing or strutting arrangement be fixed on settle described MR imaging apparatus floor on.Herein, described sick bed bracing or strutting arrangement is a free-standing structure, and bed board 15 can directly be fixed on floor by it.
In like manner, except bed board 15, described sick bed bracing or strutting arrangement does not contact with any other structure member in MR imaging apparatus, other structure members described comprise radio-frequency sending coil 12, magnet 13 and gradient coil 14 etc., the vibration caused during thoroughly to isolate MR imaging apparatus work, prevent vibration passing to bed board, video imaging quality.
After adopting sick bed bracing or strutting arrangement, due to bed board not with any vibrative object contact, like this, the vibration of described radio-frequency sending coil self or the vibration of other structure members would not be delivered on bed board, thus the mechanical vibration of bed board can be eliminated completely, and then avoid the vibration of the examined object that bed board carries, improve image quality.
In preferred version, except isolation bed board 15 and radio-frequency sending coil 12, by reducing even to eliminate vibration when gradient coil 14 works, the vibration of bed board 15 can also be reduced.Such as by providing rigid mechanical support for gradient coil 14, reduce vibration when gradient coil 14 works.
Described gradient coil 14 can directly be supported on floor, and does not contact with peripheral structure, and namely gradient coil 14 is arranged in magnet 13, but is not fixed on magnet 13.Optionally, provide mechanical support at the radially outer of gradient coil 14, concrete supporting construction the utility model does not limit.
When gradient coil 14 is not fixed on magnet 13, described radio-frequency sending coil 12 is supported on floor by coil fixing device equally, and be suspended in gradient coil 14, and described coil fixing device is separated setting with magnet 13 with gradient coil 14 respectively in the axial direction.Now, preferably a coil fixing device is set respectively in the opposite end, front and back of magnet 13, and contiguous floor, the bottom of at least one coil fixing device.
In the present embodiment, between described magnet 13 and gradient coil 14, also can damping layer be set.Described damping layer can be filled by damping material.Adopt damping layer can increase magnet 13 and the damping of gradient coil intermediate medium, reduce the vibration that gradient coil causes.
Optionally, described radio-frequency sending coil 12, gradient coil 14 and bed board 15 are all optionally set to reduce in MR imaging apparatus described in imaging process and the generation of neighbouring vibration and propagation.Or, in described radio-frequency sending coil 12, gradient coil 14 and bed board 15, optionally can be set to generation and the propagation that can reduce vibration independently.Herein, described " being set to " refers to and has had the structure of described function and the parts of ability.
Wherein, described gradient coil 14 preferably can also be arranged to can reducing effect in gradient coil 14 Lorentz force caused by the vibration of vibration and the electric conductor part do not contacted with gradient coil 14.And described radio-frequency sending coil 12 preferably can also be arranged to alleviate the vibration that the eddy current in the conductor of radio-frequency sending coil causes.
Finally, in conjunction with the embodiments one and embodiment two, and consult Fig. 2 ~ 5, the installation process of the coil fixing device of the present embodiment is as follows:
1) installation site of the 3rd bolt 120 and the good radio-frequency sending coil 12 of waist porosity is passed through in advance; After adjusting, then lock the 3rd bolt 120, the 4th bolt 121 and the 5th bolt 122, radio-frequency sending coil 12 is fixedly connected with by the end face of fixed block 119 with magnet 13, as shown in Figure 5;
2) after, by foot bolt 118, support 11 is securely fixed on floor, and regulates the height of the first bolt 116, make it withstand the outside of radio-frequency sending coil 12; After adjusting the height of the first bolt 116, lock the first bolt 116, as shown in Figure 2 and Figure 4;
3) last, fixed block 119, the 3rd bolt 120, the 4th bolt 121 and the 5th bolt 122 are pulled down from radio-frequency sending coil 12 and magnet 13, and the second bolt 117 is screwed in locking in the second bolt 116, radio-frequency sending coil 12 is fixedly connected with support 11.
Compared to prior art, the radio-frequency sending coil for MR imaging apparatus of the present utility model and MR imaging apparatus, have following beneficial effect:
The first, the utility model is by being directly fixed on the radio-frequency sending coil in MR imaging apparatus on floor, make radio-frequency sending coil not with magnet contact, thoroughly can isolate magnet vibration like this, because gradient coil vibrates the image artifacts caused when preventing image scanning, improve picture quality.
The second, coil fixing device of the present utility model adopts support and web member to realize the fixing of radio frequency transmitting coil, and wherein, support is combined by many rod members, and structure is simple, and processing cost is low; Meanwhile, web member utilizes bolt to realize the connection of support and radio-frequency sending coil and the connection on support and floor, installs simple, easy to operate.
Three, coil fixing device of the present utility model is by arranging attenuation pad, avoids floor and radio-frequency sending coil to occur resonance, has thoroughly isolated floor vibration, improve image quality.
Foregoing description is only the description to the utility model preferred embodiment; any restriction not to the utility model scope; any change that the those of ordinary skill in the utility model field does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (10)
1. the radio-frequency sending coil for MR imaging apparatus, described radio-frequency sending coil comprises a coil fixing device, for fixing described radio-frequency sending coil, it is characterized in that, described coil fixing device is fixed on the floor of the described MR imaging apparatus of an arrangement.
2. radio-frequency sending coil as claimed in claim 1, it is characterized in that, described coil fixing device comprises support and web member, described web member comprises the first web member and the second web member, described support connects described radio-frequency sending coil by described first web member, meanwhile, described support is fixed on described floor by described second web member.
3. radio-frequency sending coil as claimed in claim 2, it is characterized in that, the quantity of described support is two, and two described Bracket setting are at the relative two ends of described radio-frequency sending coil, and each described support is used for radial fixing described radio-frequency sending coil.
4. radio-frequency sending coil as claimed in claim 3, it is characterized in that, described support is a framed structure.
5. radio-frequency sending coil as claimed in claim 2, it is characterized in that, described support comprises an adjusting mechanism, for adjusting the installation site of described RF-reflective coil.
6. radio-frequency sending coil as claimed in claim 1, it is characterized in that, described coil fixing device comprises an attenuation pad, described attenuation pad be arranged on settle described MR imaging apparatus floor on.
7. a MR imaging apparatus, comprise magnet, gradient coil, radio-frequency sending coil and bed board, described gradient coil is arranged in described magnet, and fix on the magnet, it is characterized in that, described radio-frequency sending coil is arranged in described gradient coil, and is fixed on floor by coil fixing device, guide rail is provided with, for supporting described bed board in described radio-frequency sending coil.
8. MR imaging apparatus as claimed in claim 7, it is characterized in that, described MR imaging apparatus also comprises an adjusting gear, for adjusting the installation site of described radio-frequency sending coil.
9. a MR imaging apparatus, comprise magnet, gradient coil and RF-reflective coil, described gradient coil is arranged in described magnet, it is characterized in that, described MR imaging apparatus also comprises the coil fixing device extended along the vertical direction, described radio-frequency sending coil is supported by described coil fixing device, and is suspended in described gradient coil, and described coil fixing device is separated setting with described magnet with gradient coil respectively in the axial direction.
10. MR imaging apparatus as claimed in claim 9, it is characterized in that, described MR imaging apparatus comprises two coil fixing devices, and described two coil fixing devices are arranged in the opposite end, front and back of described magnet respectively, and contiguous floor, the bottom of at least one coil fixing device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520606678.4U CN204925368U (en) | 2015-08-12 | 2015-08-12 | A radio frequency emission coil and magnetic resonance imaging equipment for magnetic resonance imaging equipment |
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| CN201520606678.4U CN204925368U (en) | 2015-08-12 | 2015-08-12 | A radio frequency emission coil and magnetic resonance imaging equipment for magnetic resonance imaging equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772165A (en) * | 2016-12-30 | 2017-05-31 | 深圳先进技术研究院 | The determination method and device of amide proton transfer effect |
| CN109444780A (en) * | 2018-11-28 | 2019-03-08 | 上海联影医疗科技有限公司 | Emission array unit, body transmitting antenna and magnetic resonance equipment |
| CN111175679A (en) * | 2020-02-26 | 2020-05-19 | 上海东软医疗科技有限公司 | Shimming bracket assembly and shimming bracket assembly |
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2015
- 2015-08-12 CN CN201520606678.4U patent/CN204925368U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772165A (en) * | 2016-12-30 | 2017-05-31 | 深圳先进技术研究院 | The determination method and device of amide proton transfer effect |
| CN106772165B (en) * | 2016-12-30 | 2019-04-05 | 深圳先进技术研究院 | The determination method and device of amide proton transfer effect |
| CN109444780A (en) * | 2018-11-28 | 2019-03-08 | 上海联影医疗科技有限公司 | Emission array unit, body transmitting antenna and magnetic resonance equipment |
| CN111175679A (en) * | 2020-02-26 | 2020-05-19 | 上海东软医疗科技有限公司 | Shimming bracket assembly and shimming bracket assembly |
| CN111175679B (en) * | 2020-02-26 | 2022-04-01 | 上海东软医疗科技有限公司 | Shimming bracket assembly and shimming bracket assembly |
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