CN203468608U - Open-type superconducting magnetic resonance imaging system - Google Patents
Open-type superconducting magnetic resonance imaging system Download PDFInfo
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- CN203468608U CN203468608U CN201320550807.3U CN201320550807U CN203468608U CN 203468608 U CN203468608 U CN 203468608U CN 201320550807 U CN201320550807 U CN 201320550807U CN 203468608 U CN203468608 U CN 203468608U
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- 238000002595 magnetic resonance imaging Methods 0.000 title claims abstract description 34
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- 238000000034 method Methods 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 206010009244 Claustrophobia Diseases 0.000 description 3
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- 238000002560 therapeutic procedure Methods 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 2
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- 238000003745 diagnosis Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
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- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 238000002372 labelling Methods 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an open-type superconducting magnetic resonance imaging system which comprises an open-type superconducting magnet, gradient coils, radio frequency transmitting coils and a radio frequency receiving coil. The open-type superconducting magnet comprises a first superconducting coil, a second superconducting coil and a core, the first superconducting coil and the second superconducting coil are arranged vertically oppositely, the core is made of a ferromagnetic material, and the open-type superconducting magnet is constructed to generate a main magnetic field for forming magnetic resonance signals. The gradient coils include a first gradient coil and a second gradient coil opposite to each other vertically, and are constructed to generate a gradient magnetic field. The radio frequency transmitting coils include a first radio frequency transmitting coil and a second radio frequency transmitting coil opposite to each other vertically, and are constructed to generate a radio frequency magnetic field for exciting scanned objects. The radio frequency receiving coil is constructed to receive the magnetic resonance signals in a space. The system has the advantages of high imaging quality, comfortableness of patients and the like.
Description
Technical field
This utility model relates to nuclear magnetic resonance and detection field, relates in particular to a kind of open type superconducting magnetic resonance imaging system.
Background technology
Nuclear magnetic resonance (MRI) system is one of current most widely used out of contact imaging armarium, and it utilizes magnetic resonance phenomenon from human body, to obtain electromagnetic signal, and reconstruction place human body information is mainly used in clinical inside of human body image-forming diagnose.
In magnetic resonance imaging system, the magnet that produces background magnetic field is core component, and the background magnetic field that produces sufficient intensity and the uniformity at diagnosis and treatment imaging region (being patient space) is the essential condition that produces magnetic resonance phenomenon.And the intensity of background magnetic field is higher, definition that can imaging is higher, is more conducive to the diagnosis of the state of an illness.
Superconducting magnet is to be made by the current-carrying coil of superconductor wire coiling, and it is operated under extremely low temperature environment can produce high-intensity magnetic field, and central magnetic field intensity can reach 1.5T, even higher.In addition,, in homogeneity range ball domain space (DSV) scope of for example 40cm, the unevenness of the high-intensity magnetic field that superconducting magnet produces is less than 10ppm (ppm, 1,000,000/).
But, the magnetic resonance system of application superconductor technology is cylindric enclosed at present, while diagnosing, human body need to enter along axial direction the inner space of cylindric magnetic resonance system, and this is very inconvenient for claustrophobia patient and obese patient.And this magnetic resonance system cannot, with interventional therapy to combination, limit the development of medical skill owing to being subject to spatial limitation.
Therefore, need a kind of open type superconducting magnetic resonance imaging system, to solve the above-mentioned problems in the prior art.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, this utility model provides a kind of open type superconducting magnetic resonance imaging system, described open type superconducting magnetic resonance imaging system comprises: open type superconducting magnet, it comprises the first superconducting coil of being oppositely arranged up and down and the second superconducting coil and the core body of being made by ferromagnetic material, and described open type superconducting magnet configurations is for producing the main field that forms magnetic resonance signal; Gradient coil, it comprises the first gradient coil opposing upper and lower and the second gradient coil, is configured to produce gradient magnetic; Radio-frequency sending coil, it comprises the first radio-frequency sending coil and the second radio-frequency sending coil being oppositely arranged up and down, is configured to produce the radio-frequency (RF) magnetic field that excites scanned object; And RF receiving coil, it is configured to receive the magnetic resonance signal in space.
Preferably, described the first superconducting coil and described the second superconducting coil are the hollow circular cylinder with cavity.
Preferably, described the first gradient coil and described the first radio-frequency sending coil are positioned at the cavity of described the first superconducting coil, and described the second gradient coil and described the second radio-frequency sending coil are positioned at the cavity of described the second superconducting coil.
Preferably, the thickness of described the first gradient coil and described the second gradient coil and described the first radio-frequency sending coil and described the second radio-frequency sending coil are respectively 10-40mm.
Preferably, described open type superconducting magnet is C type or Double-pillar superconducting magnet.
Preferably, described RF receiving coil is solenoid type, saddle type, orthogonal type or phase array probe.
Preferably, described gradient coil and described radio-frequency sending coil are plate.
Preferably, open type superconducting magnetic resonance imaging system also comprises: scanning work station, and it is configured to form scan protocols and sequence according to user's operation; Spectrometer, it is configured to described scan protocols and sequence to resolve and carry out, and exports respective waveforms and control signal; Amplifier, it is sent to described radio-frequency sending coil and described gradient coil after being configured to described waveform to amplify; Wherein, described spectrometer is also configured to receive and process the described magnetic resonance signal from described RF receiving coil, and is sent to described scanning work station and carries out image reconstruction.
Preferably, described open type superconducting magnetic resonance imaging system also comprises scanning bed.
Preferably, described scanning bed be that three-dimensional is movably scanning bed.
The open type superconducting magnetic resonance system that this utility model provides has higher magnetic field intensity and the uniformity, and by configuration high-power RF and gradient power amplifier, the power of this system can reach 10-20kw, has therefore improved the definition of imaging, has enriched imaging function.In addition, because the direction of main field and gradient magnetic is vertical with patient, RF receiving coil is enclosed within on scanned object, therefore can make imaging center be positioned at the sensitivity center of RF receiving coil, has further improved image quality.Further, because this system is open, the space that therefore holds scanned object is larger, and comfort level is higher, is specially adapted to obese patient and claustrophobia patient, and apply in the horizontal field that is applicable to combine with interventional therapy.
In utility model content part, introduced the concept of a series of reduced forms, this will further describe in specific embodiment part.This utility model content part does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain of attempting to determine technical scheme required for protection.
Below in conjunction with accompanying drawing, describe advantage of the present utility model and feature in detail.
Accompanying drawing explanation
Following accompanying drawing of the present utility model is used for understanding this utility model in this as a part of the present utility model.Shown in the drawings of embodiment of the present utility model and description thereof, be used for explaining principle of the present utility model.In the accompanying drawings,
Fig. 1 is according to the schematic block diagram of a kind of open type superconducting magnetic resonance imaging system of the present utility model;
Fig. 2 is according to the schematic cross sectional views of the open type superconducting magnetic resonance imaging system of the Double-pillar of an embodiment of this utility model;
Fig. 3 is according to the schematic cross sectional views of the open type superconducting magnetic resonance imaging system of the C type of another embodiment of this utility model;
Fig. 4 is according to the schematic diagram of the radio-frequency sending coil of an embodiment of this utility model;
Fig. 5 is according to the schematic diagram of the RF receiving coil of an embodiment of this utility model; And
Fig. 6 is according to the schematic diagram of the RF receiving coil of another embodiment of this utility model.
The specific embodiment
In the following description, having provided a large amount of concrete details understands this utility model more thoroughly to provide.Yet, it will be apparent to one skilled in the art that this utility model can be implemented without one or more these details.In other example, for fear of obscuring with this utility model, for technical characterictics more well known in the art, be not described.
In order thoroughly to understand this utility model, will detailed structure be proposed in following description.Obviously, execution of the present utility model is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present utility model is described in detail as follows, yet except these are described in detail, this utility model can also have other embodiments.
This utility model provides a kind of open type superconducting magnetic resonance imaging system.Fig. 1 is according to the schematic block diagram of the open type superconducting magnetic resonance imaging system of an embodiment of this utility model.
As shown in Figure 1, magnetic resonance imaging system 100 comprises scanning room 110, equipment room 120 and operation room 130.In scanning room 110, be provided with open type superconducting magnet 111, gradient coil 112, radio-frequency sending coil 113, RF receiving coil 114 and for carrying scanning bed 115 of scanned object.In equipment room 120, be placed with gradient amplifier 121, radio frequency amplifier 122, spectrometer 123 and regulated power supply 124.And, between scanning room 110 and equipment room 120, be also provided with wave filter 125.In operation room 130, be provided with the scanning work station 131 that operator operate this magnetic resonance imaging system 100.
Open type superconducting magnet 111 produces the main field environment that forms magnetic resonance signal; Scan protocols and sequence that scanning work station 131 operates formation by user send to spectrometer 123; 123 pairs of scan protocols of spectrometer and sequence are resolved and are carried out, and export respective waveforms and control signal to radio frequency amplifier 122 and gradient amplifier 121; Radio frequency amplifier 122 and gradient amplifier 121 will be inputted after waveform amplification, be sent to respectively radio-frequency sending coil 113 and gradient coil 112; The radio-frequency field that radio-frequency sending coil 113 produces space excites scanned object or human body, forms magnetic resonance signal; Gradient coil 112 produces gradient magnetic and in magnetic resonance signal, adds space encoding information; RF receiving coil 114 receives space magnetic resonance signal and is sent to spectrometer 123 through multistage amplification; Scanning work station 131 is processed and be sent to 123 pairs of magnetic resonance signals that receive of spectrometer; 131 pairs, scanning work station MR data is carried out image reconstruction, and reconstruction gained image is shown to operator.
Preferably, scanning bed 115 can be removable scanning bed for applicant's claimed three-dimensional in No. 201320006859.4 utility model patent of China.Herein the full text of this patent application is incorporated herein by reference.Certainly, scanning bed 115 are not limited to this, and it can also be for known in the art various scanning bed.
Preferably, spectrometer 123 can be the spectrometer of applicant's claimed magnetic resonance imaging system based on cpci in No. 201220042351.5 utility model patent of China.Herein the full text of this patent application is incorporated herein by reference.Certainly, spectrometer 123 is not limited to this, and it can also be various spectrometers known in the art.
Fig. 2 is for being positioned at the schematic cross sectional views of the parts of scanning room according to the open type superconducting magnetic resonance imaging system of an embodiment of this utility model.As shown in Figure 2, open type superconducting magnet comprises the first superconducting coil 201A and the second superconducting coil 201B being oppositely arranged up and down, and the first superconducting coil 201A and the second superconducting coil 201B are enclosed in respectively in the vacuum cavity 204 of low temperature.In addition, open magnet also comprises the core body 201C being made by ferromagnetic material, in core body 201C, has formed flux loop.Open type superconducting magnet can be the Double-pillar shown in Fig. 2, can be the C shape shown in Fig. 3.The parts with identical in Fig. 2 that show in Fig. 3 have adopted identical labelling, and the embodiment difference shown in the embodiment shown in Fig. 3 and Fig. 2 is only that core body 301C is C type.This open type superconducting magnet can produce the main field that forms magnetic resonance signal.
Return referring to Fig. 2, gradient coil comprises the first gradient coil 202A opposing upper and lower and the second gradient coil 202B.Gradient coil can produce gradient magnetic, to add space encoding information in magnetic resonance signal.In the preferred embodiment of this aspect, the first gradient coil 202A and the second gradient coil 202B are all tabular.
Radio-frequency sending coil comprises the first radio-frequency sending coil 203A and the second radio-frequency sending coil 203B being oppositely arranged up and down.Radio-frequency sending coil can produce the radio-frequency (RF) magnetic field that excites scanned object, and the direction of radio-frequency (RF) magnetic field is vertical with gradient magnetic with main field.Radio-frequency sending coil can adopt the radio-frequency sending coil shown in Fig. 4 and any other to be applicable to the radio-frequency sending coil of open type superconducting system.In the preferred embodiment of this aspect, the first radio-frequency sending coil 203A and the second radio-frequency sending coil 203B are all tabular.
RF receiving coil (not shown) can receive the magnetic resonance signal in space.As example, RF receiving coil can be the orthogonal type of the solenoid shown in Fig. 5-6 and saddle type combination, also can be for any other is applicable to the RF receiving coil of open type superconducting system, as phase array probe.In diagnostic procedure, RF receiving coil is enclosed within on scanned object.
For gradient coil, radio-frequency sending coil and RF receiving coil, can there are various structures known in the art, herein only to being described in detail with the distinct part of prior art.
In a preferred embodiment, as shown in Figures 2 and 3, the first superconducting coil 201A and the second superconducting coil 201B are the hollow circular cylinder with cavity.The first gradient coil 202A and the first radio-frequency sending coil 203A can be positioned at the cavity of the first superconducting coil 201A, and the second gradient coil 202B and the second radio-frequency sending coil 203B can be positioned at the cavity of the second superconducting coil 201B.With this set-up mode, can make the space between two magnetic poles increase 10-40cm, the comfort level of using to improve patient, and operate for other necessary space that (for example insertion type treatment) provides.
On this basis, can support the design of radio-frequency sending coil and the gradient coil of larger thickness, preferably, can be from current 5-20mm thick to be increased to 10-40mm thick, thereby make the delivery efficiency of radio-frequency sending coil and gradient coil improve 50-100%.Therefore, in further preferred embodiment, the first gradient coil 202A of the open type superconducting magnetic resonance imaging system that this utility model provides and the thickness of the second gradient coil 202B and the first radio-frequency sending coil 203A and the second radio-frequency sending coil 203B are respectively 10-40mm.
The open type superconducting magnetic resonance system that this utility model provides has higher magnetic field intensity and the uniformity, and by configuration high-power RF and gradient power amplifier, the power of this system can reach 10-20kw, has therefore improved the definition of imaging, has enriched imaging function.In addition, because the direction of main field and gradient magnetic is vertical with patient, RF receiving coil is enclosed within on scanned object, therefore can make imaging center be positioned at the sensitivity center of RF receiving coil, has further improved image quality.Further, because this system is open, the space that therefore holds scanned object is larger, and comfort level is higher, is specially adapted to obese patient and claustrophobia patient, and apply in the horizontal field that is applicable to combine with interventional therapy.
This utility model is illustrated by above-described embodiment, but should be understood that, above-described embodiment is the object for giving an example and illustrating just, but not is intended to this utility model to be limited in described scope of embodiments.In addition it will be understood by those skilled in the art that; this utility model is not limited to above-described embodiment; according to instruction of the present utility model, can also make more kinds of variants and modifications, these variants and modifications all drop in this utility model scope required for protection.Protection domain of the present utility model is defined by the appended claims and equivalent scope thereof.
Claims (10)
1. an open type superconducting magnetic resonance imaging system, is characterized in that, described open type superconducting magnetic resonance imaging system comprises:
Open type superconducting magnet, it comprises the first superconducting coil of being oppositely arranged up and down and the second superconducting coil and the core body of being made by ferromagnetic material, described open type superconducting magnet configurations is for producing the main field that forms magnetic resonance signal;
Gradient coil, it comprises the first gradient coil opposing upper and lower and the second gradient coil, is configured to produce gradient magnetic;
Radio-frequency sending coil, it comprises the first radio-frequency sending coil and the second radio-frequency sending coil being oppositely arranged up and down, is configured to produce the radio-frequency (RF) magnetic field that excites scanned object; And
RF receiving coil, it is configured to receive the magnetic resonance signal in space.
2. according to open type superconducting magnetic resonance imaging system claimed in claim 1, it is characterized in that, described the first superconducting coil and described the second superconducting coil are the hollow circular cylinder with cavity.
3. according to open type superconducting magnetic resonance imaging system claimed in claim 2, it is characterized in that, described the first gradient coil and described the first radio-frequency sending coil are positioned at the cavity of described the first superconducting coil, and described the second gradient coil and described the second radio-frequency sending coil are positioned at the cavity of described the second superconducting coil.
4. according to open type superconducting magnetic resonance imaging system claimed in claim 3, it is characterized in that, the thickness of described the first gradient coil and described the second gradient coil and described the first radio-frequency sending coil and described the second radio-frequency sending coil are respectively 10-40mm.
5. according to open type superconducting magnetic resonance imaging system claimed in claim 1, it is characterized in that, described open type superconducting magnet is C type or Double-pillar superconducting magnet.
6. according to open type superconducting magnetic resonance imaging system claimed in claim 1, it is characterized in that, described RF receiving coil is solenoid type, saddle type, orthogonal type or phase array probe.
7. according to open type superconducting magnetic resonance imaging system claimed in claim 1, it is characterized in that, described gradient coil and described radio-frequency sending coil are plate.
8. according to open type superconducting magnetic resonance imaging system claimed in claim 1, it is characterized in that, open type superconducting magnetic resonance imaging system also comprises:
Scanning work station, it is configured to form scan protocols and sequence according to user's operation;
Spectrometer, it is configured to described scan protocols and sequence to resolve and carry out, and exports respective waveforms and control signal;
Amplifier, it is sent to described radio-frequency sending coil and described gradient coil after being configured to described waveform to amplify;
Wherein, described spectrometer is also configured to receive and process the described magnetic resonance signal from described RF receiving coil, and is sent to described scanning work station and carries out image reconstruction.
9. according to open type superconducting magnetic resonance imaging system claimed in claim 8, it is characterized in that, described open type superconducting magnetic resonance imaging system also comprises scanning bed.
10. according to open type superconducting magnetic resonance imaging system claimed in claim 9, it is characterized in that, described scanning bed be that three-dimensional is movably scanning bed.
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| CN201320550807.3U CN203468608U (en) | 2013-09-06 | 2013-09-06 | Open-type superconducting magnetic resonance imaging system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103876742A (en) * | 2014-04-15 | 2014-06-25 | 王天峰 | Small-sized electromagnetic type medical magnetic resonance device |
| CN110464354A (en) * | 2019-09-06 | 2019-11-19 | 安徽硕金医疗设备有限公司 | A kind of large aperture intervention magnetic resonance system |
| CN111208461A (en) * | 2020-02-29 | 2020-05-29 | 北京惠康得医疗科技研究院有限公司 | Device and method for measuring concentration and distribution of boron-containing medicine in human brain |
| CN113238176A (en) * | 2021-05-19 | 2021-08-10 | 江苏力磁医疗设备有限公司 | Magnetic resonance imaging apparatus and system |
| CN113520762A (en) * | 2021-04-15 | 2021-10-22 | 江苏力磁医疗设备有限公司 | Infant transfer equipment, imaging equipment and infant transfer imaging system |
| CN113848520A (en) * | 2021-09-28 | 2021-12-28 | 杭州微影医疗科技有限公司 | Ultralow field magnetic resonance imaging system |
-
2013
- 2013-09-06 CN CN201320550807.3U patent/CN203468608U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103876742A (en) * | 2014-04-15 | 2014-06-25 | 王天峰 | Small-sized electromagnetic type medical magnetic resonance device |
| CN103876742B (en) * | 2014-04-15 | 2018-04-27 | 王天峰 | The electromagnetic type medical magnetic resonance device of miniaturization |
| CN110464354A (en) * | 2019-09-06 | 2019-11-19 | 安徽硕金医疗设备有限公司 | A kind of large aperture intervention magnetic resonance system |
| CN111208461A (en) * | 2020-02-29 | 2020-05-29 | 北京惠康得医疗科技研究院有限公司 | Device and method for measuring concentration and distribution of boron-containing medicine in human brain |
| CN113520762A (en) * | 2021-04-15 | 2021-10-22 | 江苏力磁医疗设备有限公司 | Infant transfer equipment, imaging equipment and infant transfer imaging system |
| CN113238176A (en) * | 2021-05-19 | 2021-08-10 | 江苏力磁医疗设备有限公司 | Magnetic resonance imaging apparatus and system |
| WO2022241924A1 (en) * | 2021-05-19 | 2022-11-24 | 江苏力磁医疗设备有限公司 | Magnetic resonance imaging device and system |
| CN113848520A (en) * | 2021-09-28 | 2021-12-28 | 杭州微影医疗科技有限公司 | Ultralow field magnetic resonance imaging system |
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