CN103091652A - Breast magnetic resonance radio frequency receiving coil used for magnetic resonance imaging system - Google Patents
Breast magnetic resonance radio frequency receiving coil used for magnetic resonance imaging system Download PDFInfo
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- CN103091652A CN103091652A CN2013100421805A CN201310042180A CN103091652A CN 103091652 A CN103091652 A CN 103091652A CN 2013100421805 A CN2013100421805 A CN 2013100421805A CN 201310042180 A CN201310042180 A CN 201310042180A CN 103091652 A CN103091652 A CN 103091652A
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Abstract
The invention discloses a breast magnetic resonance radio frequency receiving coil used for a magnetic resonance imaging system. The breast magnetic resonance radio frequency receiving coil comprises an outer shell assembly and an antenna circuit arranged inside the outer shell assembly. The outer shell assembly comprises a base plate component and a baffle component which is used for attaching to a human body. Two through holes used for placing breasts are formed in the baffle component. A plurality of connecting columns are arranged between the base plate component and the baffle component. Two imaging spaces in an open type structure are respectively formed among the base plate component, the connecting columns and the through holes, wherein the imaging spaces are used for containing the breasts of a patient. The antenna circuit comprises a plurality of coil receiving units which are respectively wrapped and wounded on the outer sides of the imaging spaces and form a multi-channel phased array structure. The breast magnetic resonance radio frequency receiving coil can satisfy the demands of breast biopsy guided by magnetic resonance, is beneficial for improving scanning coverage range and image quality of underarm lymph and breast wall tissue in breast magnetic resonance scan, and has the advantages of being high in signal to noise ratio, wide in coverage range, high in imaging quality, convenient to use, and simple in structure.
Description
Technical field
The present invention relates to the magnetic resonance imaging system field, be specifically related to a kind of mammary gland magnetic resonance RF receiving coil for magnetic resonance imaging system.
Background technology
Magnetic resonance imaging (MRI) is the another major progress of medical imaging diagnosis technology after CT.The ultimate principle of magnetic resonance imaging comes from the discovery of nineteen forty-six American scholar Bloch and Purcell, under the effect of outside magnetic field, some proton around the spin of main field (external magnetic field) precession (comprising the hydrogen proton in human body) is under of short duration rf wave effect, and angle of precession increases; After rf wave stopped, those protons can return to original state again gradually, and discharged the radiofrequency signal identical with the field wave frequency simultaneously, and this physical phenomenon is called as nuclear magnetic resonance.Mr imaging technique is to utilize this principle, by additional Pulsed filed gradient in main field, optionally excite the interior atomic nucleus of human body of required position, then receive the NMR signal that atomic nucleus produces, carry out at last Fourier transform in computing machine, these signals are carried out frequency coding and phase encoding, thereby set up a complete magnetic resonance image (MRI).
MR imaging apparatus comprises radio-frequency sending coil and received RF coil, radio-frequency sending coil is for generation of Pulsed filed gradient, the received RF coil is used for receiving the NMR signal that atomic nucleus produces, and the received RF coil can be that transmitting coil itself can be also the absolute coil that receives only radiofrequency signal.In magnetic resonance imaging system, the Signal-to-Noise that the magnetic field homogeneity that radio-frequency sending coil produces is good and receiving coil receives (SNR) height is the key factor that obtains high quality graphic.The method that improves signal to noise ratio (S/N ratio) has two kinds, a kind of is quadrature receiving, and another kind is the phased-array coil technology, and the latter uses a plurality of independently small coils to cover together this zone, because the noise of the very zonule of only closing on coil just can enter coil, therefore can effectively improve signal to noise ratio (S/N ratio).But when radio-frequency sending coil and received RF coil are same coil, use phased-array coil can have a problem, namely be difficult to guarantee the homogeneity in the magnetic field that coil produces, this problem especially is embodied in the magnetic resonance imager of surveying for to the partes corporis humani position.Because the shape of each physiological location of human body is different, very irregular again, and size also difference is very large, so how according to the physiological structure characteristics at each position of human body, arrange dexterously coil circuit, be coil design personnel's maximum task in the world thereby obtain comparatively uniformly Distribution of Magnetic Field and larger detection sensitivity always.In order to realize above-mentioned coil design target, the design of coil case and internal mechanical structure also becomes the key factor that guarantees high-quality scan image and satisfy the physiological structure coverage, and well-designed physical construction coordinates the antenna circuit that is assemblied in its inner space jointly to realize most important link in a coil design.
Development along with the magnetic resonance detection technique, the importance of the disorder in screening such as breast cancer more and more comes into one's own, be specifically designed to the design major requirement high s/n ratio of the magnetic resonance radio frequency receiving coil of galactophore scanning, larger coverage, and the open design etc. that can be used for the biopsy sampling of guided by magnetic resonance.The magnetic resonance radio frequency receiving coil that is used for galactophore scanning at present exists because structure is simple and crude the defective that signal to noise ratio (S/N ratio) is low, coverage is little, image quality is poor, has restricted the application of magnetic resonance detection technique in the fields such as disorder in screening such as breast cancer.
Summary of the invention
The mammary gland magnetic resonance RF receiving coil that is used for magnetic resonance imaging system that the signal to noise ratio (S/N ratio) that the technical problem to be solved in the present invention is to provide a kind of detection signal is high, wide coverage, image quality are high, easy to use, simple in structure.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
a kind of mammary gland magnetic resonance RF receiving coil for magnetic resonance imaging system, comprise cage assembly and the antenna circuit of being located at cage assembly inside, described cage assembly comprises bottom deck assembly and is used to press close to the baffle plate assembly of human body, described baffle plate assembly is provided with two through holes that are used for inserting mammary gland, be provided with the supporting cell guide of a plurality of hollow-core constructions between described bottom deck assembly and baffle plate assembly, described bottom deck assembly, form respectively two for the imaging space of the Open architecture that holds patient's mammary gland between supporting cell guide and two through holes, described antenna circuit comprises a plurality of coil receiving elements of the formation hyperchannel phased array structure that is paperwrapped in respectively the described imaging space outside.
As further improvement in the technical proposal:
Described bottom deck assembly comprises base plate upper casing and the base plate lower casing that cooperatively interacts, the space that is formed for installing the coil receiving element between described base plate upper casing and base plate lower casing; Described baffle plate assembly comprises baffle plate upper casing and the baffle plate lower casing that cooperatively interacts, the space that is formed for installing the coil receiving element between described baffle plate upper casing and baffle plate lower casing; One end of described base plate upper casing is connected with an end of baffle plate lower casing and its connecting portion is provided with for the connecting hole that the coil receiving element is installed, and the other end of described base plate upper casing is connected with an end of baffle plate lower casing by supporting cell guide.
One side of described base plate upper casing is provided with the first Connection Block, and the opposite side of described base plate upper casing is provided with three first and connects column base, and described three first connection column bases are arranged on the same straight line; One side of described baffle plate lower casing is provided with the second Connection Block, and the opposite side of described baffle plate lower casing is provided with respectively and connects three second corresponding connection column bases of column base with described three first; Described the first Connection Block is connected with the second Connection Block, and described three first connection column bases are connected column base by a supporting cell guide respectively and are connected with second.
Described supporting cell guide is comprised of the guide pillar lid of two positioned opposite, and an end of described two guide pillars lid jointly is inserted in first and connects in column base, and the other end of described two guide pillars lid jointly is inserted in second and connects in column base.
Described antenna circuit comprises 8 coil receiving elements.
On described bottom deck assembly, the location arrangements of relatively described two through holes has 3 coil receiving elements of arranged superposed; Described baffle plate assembly is provided with 2 coil receiving elements that hold respectively described through hole; Be provided with 3 coil receiving elements arranging along the bottom deck assembly vertical direction between described bottom deck assembly and baffle plate assembly, wherein 1 coil receiving element is arranged in two positions between through hole, all the other 2 coil receiving element size shape are in full accord, be arranged in respectively two through holes along the axial connecting line of two through holes the outside, and the coil receiving element that relatively is arranged vertically between two through holes is arranged symmetrically with.
the present invention has following advantage: antenna circuit of the present invention comprises a plurality of coil receiving elements of the formation hyperchannel phased array structure that is paperwrapped in respectively the imaging space outside, a plurality of coil receiving elements patient's mammary gland of can fitting well improves the signal to noise ratio (S/N ratio) of detection signal, image quality is high, and the bottom deck assembly that passes through of the present invention, form respectively two for the imaging space of the Open architecture that holds patient's mammary gland between supporting cell guide and two through holes, realized the support to the mammary gland test alive of guided by magnetic resonance when carrying out magnetic resonance imaging, the imaging space of Open architecture can be fit to the adaptability of patient's breast of different size shape, wide coverage to mammary gland, adaptability is good, help to promote in mammary gland magnetic resonance scanning to scanning coverage and the picture quality of axillary lymph and wall of the chest tissue, signal to noise ratio (S/N ratio) with detection signal is high, wide coverage, adaptability is good, easy to use, advantage simple in structure.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the perspective view of the embodiment of the present invention.
Fig. 2 is the perspective structure schematic diagram of the embodiment of the present invention.
Fig. 3 is the stereo decomposing structural representation of the embodiment of the present invention.
Fig. 4 is the inside perspective view of baffle plate assembly in the embodiment of the present invention.
Fig. 5 is the inside perspective view of bottom deck assembly in the embodiment of the present invention.
Fig. 6 is the coil receiving element arrangement schematic diagram in bottom deck assembly in the embodiment of the present invention.
Fig. 7 is the coil receiving element arrangement schematic diagram in baffle plate assembly in the embodiment of the present invention.
Fig. 8 is along the coil receiving element arrangement schematic diagram of through hole vertical direction in the embodiment of the present invention.
Marginal data:
1, cage assembly;
11, bottom deck assembly; 111, base plate upper casing; 112, base plate lower casing; 113, the first Connection Block; 114, first connects column base; 115, connecting hole;
12, baffle plate assembly; 120, through hole; 121, baffle plate upper casing; 122, baffle plate lower casing; 123, the second Connection Block; 124, second connects column base;
13, supporting cell guide; 131, guide pillar lid;
2, antenna circuit; 21, coil receiving element;
3, imaging space.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention are made more explicit defining.
as depicted in figs. 1 and 2, the mammary gland magnetic resonance RF receiving coil that the present embodiment is used for magnetic resonance imaging system comprises cage assembly 1 and the antenna circuit 2 of being located at cage assembly 1 inside, cage assembly 1 comprises bottom deck assembly 11 and is used to press close to the baffle plate assembly 12 of human body, baffle plate assembly 12 is provided with two through holes 120 that are used for inserting mammary gland, be provided with the supporting cell guide 13 of a plurality of hollow-core constructions between bottom deck assembly 11 and baffle plate assembly 12, bottom deck assembly 11, form respectively two for the imaging space 3 of the Open architecture that holds patient's mammary gland between supporting cell guide 13 and two through holes 120, antenna circuit 2 comprises a plurality of coil receiving elements 21 of the formation hyperchannel phased array structure that is paperwrapped in respectively imaging space 3 outsides.the antenna circuit 2 of the present embodiment comprises a plurality of coil receiving elements 21 of the formation hyperchannel phased array structure that is paperwrapped in respectively imaging space 3 outsides, and a plurality of coil receiving elements 21 can be fitted well, and to improve signal to noise ratio (S/N ratio), the image quality of detection signal high for patient's mammary gland, simultaneously, be provided with the supporting cell guide 13 of a plurality of hollow-core constructions between the bottom deck assembly 11 of the present embodiment and baffle plate assembly 12, therefore can guarantee that imaging space 3 is open stereoeffect, bottom deck assembly 11, form respectively two for the imaging space 3 of the Open architecture that holds patient's mammary gland between supporting cell guide 13 and two through holes 120, its Open architecture can satisfy the mammary gland biopsy of guided by magnetic resonance, realized the support to the mammary gland test alive of guided by magnetic resonance when carrying out magnetic resonance imaging, the imaging space 3 of Open architecture can be fit to the adaptability of patient's breast of different size shape, wide coverage to mammary gland, adaptability is good, help to promote in mammary gland magnetic resonance scanning to scanning coverage and the picture quality of axillary lymph and wall of the chest tissue, signal to noise ratio (S/N ratio) with detection signal is high, wide coverage, adaptability is good, easy to use, advantage simple in structure.
As Fig. 2, Fig. 3 and shown in Figure 4, the bottom deck assembly 11 of the present embodiment comprises base plate upper casing 111 and the base plate lower casing 112 that cooperatively interacts, the space that is formed for installing coil receiving element 21 between base plate upper casing 111 and base plate lower casing 112; Baffle plate assembly 12 comprises baffle plate upper casing 121 and the baffle plate lower casing 122 that cooperatively interacts, the space that is formed for installing coil receiving element 21 between baffle plate upper casing 121 and baffle plate lower casing 122; One end of base plate upper casing 111 is connected with an end of baffle plate lower casing 122 and its connecting portion is provided with for the connecting hole 115 that coil receiving element 21 is installed, and the other end of base plate upper casing 111 is connected with an end of baffle plate lower casing 122 by supporting cell guide 13.because supporting cell guide 13 is hollow-core construction, therefore by supporting cell guide 13 with for the connecting hole 115 that coil receiving element 21 is installed, add the space that is formed for installing coil receiving element 21 between upper plate upper casing 111 and base plate lower casing 112, the space that is formed for installing coil receiving element 21 between baffle plate upper casing 121 and baffle plate lower casing 122, therefore the installation site of all coils receiving element 21 is Open architecture, can realize easily a plurality of coil receiving elements 21 are paperwrapped on the one hand the formation hyperchannel phased array structure in imaging space 3 outsides, also be convenient on the other hand the layout of coil receiving element 21 is observed and adjust, and conveniently coil receiving element 21 is carried out inspection and maintenance.The base plate upper casing 111 of the present embodiment, base plate lower casing 112, baffle plate upper casing 121 and baffle plate lower casing 122 are plastic casing, between base plate upper casing 111 and base plate lower casing 112, between baffle plate upper casing 121 and baffle plate lower casing 122, base plate upper casing 111 with baffle plate lower casing 122 between all adopt web member to be connected, also can adopt in addition plug-in to connect, not repeat them here.
In the present embodiment, a side of base plate upper casing 111 is provided with the first Connection Block 113, and the opposite side of base plate upper casing 111 is provided with 114, three first connection column bases 114 of three first connection column bases and is arranged on the same straight line; One side of baffle plate lower casing 122 is provided with the second Connection Block 123, and the opposite side of baffle plate lower casing 122 is provided with respectively and connects three second corresponding connection column bases 124 of column base 114 with three first; The first Connection Block 113 is connected with the second Connection Block 123, three first connection column bases 114 are connected column base 124 by a supporting cell guide 13 respectively and are connected with second, the first Connection Block 113 and the second Connection Block 123 are arranged down in use, form support holder structure, be conducive to safeguard the position of patient's mammary gland in the imaging space 3 of Open architecture.
In the present embodiment, supporting cell guide 13 is comprised of the guide pillar lid 131 of two positioned opposite, one end of two guide pillar lids 131 jointly is inserted in first and connects in column base 114, the other end of two guide pillar lids 131 jointly is inserted in second and connects in column base 124, therefore conveniently carry out examination and maintenance to being arranged on two coil receiving elements 21 between guide pillars lid 131, installing/dismounting is all very simple.
The antenna circuit 2 of the present embodiment comprises 8 coil receiving elements 21, and coil receiving element 21 specifically can adopt printed circuit board (PCB) or copper wires to make as required.
As shown in Figure 5, in the present embodiment, the location arrangements of 8 coil receiving elements 21 is as follows: on bottom deck assembly 11, the location arrangements of relative two through holes 120 has 3 coil receiving elements 21 of arranged superposed; Baffle plate assembly 12 is provided with 2 coil receiving elements 21 that hold respectively through hole 120; Be provided with 3 coil receiving elements 21 arranging along bottom deck assembly 11 vertical direction between bottom deck assembly 11 and baffle plate assembly 12, wherein 1 coil receiving element 21 is arranged vertically the position between two through holes 120, all the other 2 coil receiving element 21 size shape are in full accord, be arranged in respectively two through holes 120 along the axial connecting line of two through holes 120 the outside, and the coil receiving element 21 that relatively is arranged vertically between two through holes 120 is arranged symmetrically with.
As shown in Figure 6, on bottom deck assembly 11, the location arrangements of relative two through holes 120 has 3 coil receiving elements 21 of arranged superposed to consist of passage F, passage G and passage H, passage G is positioned at the middle of bottom deck assembly 11, passage F and passage H size shape are in full accord, and be symmetrically distributed in the right and left of passage G and each and passage G form one little overlapping.
As shown in Figure 7, baffle plate assembly 12 is provided with 2 the coil receiving elements 21 that hold respectively through hole 120 and consists of passage A and channel B, passage A and B hold respectively through hole 120, are positioned at the left and right first half of the imaging space 3 that holds patient's mammary gland, and have surrounded the profile in coil aperture.
As shown in Figure 8,3 coil receiving elements 21 arranging along bottom deck assembly 11 vertical direction between bottom deck assembly 11 and baffle plate assembly 12 consist of respectively channel C, passage D and passage E, passage D is arranged in two positions between through hole 120, channel C and passage E size shape are in full accord, be arranged in respectively the outside of two through holes 120 along the axial connecting line of two through holes 120, and the coil receiving element 21 that relatively is arranged vertically between two through holes 120 is arranged symmetrically with, and namely is symmetrically distributed in the right and left of passage D.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited in above-mentioned embodiment, and every technical scheme that belongs to the principle of the invention all belongs to protection scope of the present invention.For a person skilled in the art, some improvements and modifications of carrying out under the prerequisite that does not break away from principle of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. mammary gland magnetic resonance RF receiving coil that is used for magnetic resonance imaging system, it is characterized in that: comprise cage assembly (1) and be located at the inner antenna circuit (2) of cage assembly (1), described cage assembly (1) comprises bottom deck assembly (11) and is used to press close to the baffle plate assembly (12) of human body, described baffle plate assembly (12) is provided with two through holes (120) that are used for inserting mammary gland, be provided with the supporting cell guide (13) of a plurality of hollow-core constructions between described bottom deck assembly (11) and baffle plate assembly (12), described bottom deck assembly (11), form respectively two between supporting cell guide (13) and two through holes (120) for the imaging space (3) of the Open architecture that holds patient's mammary gland, described antenna circuit (2) comprises a plurality of coil receiving elements (21) of the formation hyperchannel phased array structure that is paperwrapped in respectively described imaging space (3) outside.
2. the mammary gland magnetic resonance RF receiving coil for magnetic resonance imaging system according to claim 1, it is characterized in that: described bottom deck assembly (11) comprises base plate upper casing (111) and the base plate lower casing (112) that cooperatively interacts, and is formed for installing the space of coil receiving element (21) between described base plate upper casing (111) and base plate lower casing (112); Described baffle plate assembly (12) comprises baffle plate upper casing (121) and the baffle plate lower casing (122) that cooperatively interacts, and is formed for installing the space of coil receiving element (21) between described baffle plate upper casing (121) and baffle plate lower casing (122); One end of described base plate upper casing (111) is connected with an end of baffle plate lower casing (122) and its connecting portion is provided with for the connecting hole (115) that coil receiving element (21) is installed, and the other end of described base plate upper casing (111) is connected with an end of baffle plate lower casing (122) by supporting cell guide (13).
3. the mammary gland magnetic resonance RF receiving coil for magnetic resonance imaging system according to claim 2, it is characterized in that: a side of described base plate upper casing (111) is provided with the first Connection Block (113), the opposite side of described base plate upper casing (111) is provided with three first and connects column base (114), and described three first connection column bases (114) are arranged on the same straight line; One side of described baffle plate lower casing (122) is provided with the second Connection Block (123), and the opposite side of described baffle plate lower casing (122) is provided with respectively and connects three second corresponding connection column bases (124) of column base (114) with described three first; Described the first Connection Block (113) is connected with the second Connection Block (123), and described three first connection column bases (114) are connected column base (124) by a supporting cell guide (13) respectively and are connected with second.
4. the mammary gland magnetic resonance RF receiving coil for magnetic resonance imaging system according to claim 3, it is characterized in that: described supporting cell guide (13) is comprised of the guide pillar lid (131) of two positioned opposite, one end of described two guide pillars lids (131) jointly is inserted in first and connects in column base (114), and the other end of described two guide pillars lids (131) jointly is inserted in second and connects in column base (124).
5. the mammary gland magnetic resonance RF receiving coil for magnetic resonance imaging system according to claim 4, it is characterized in that: described antenna circuit (2) comprises 8 coil receiving elements (21).
6. the mammary gland magnetic resonance RF receiving coil for magnetic resonance imaging system according to claim 5, it is characterized in that: on described bottom deck assembly (11), the location arrangements of relatively described two through holes (120) has 3 coil receiving elements (21) of arranged superposed; Described baffle plate assembly (12) is provided with 2 the coil receiving elements (21) that hold respectively described through hole (120); Be provided with 3 coil receiving elements (21) of arranging along bottom deck assembly (11) vertical direction between described bottom deck assembly (11) and baffle plate assembly (12), wherein 1 coil receiving element (21) is arranged in the position between two through holes (120), all the other 2 coil receiving elements (21) size shape are in full accord, be arranged in respectively the outside of two through holes (120) along the axial connecting line of two through holes (120), and the coil receiving element (21) that relatively is arranged vertically between two through holes (120) is arranged symmetrically with.
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| CN201310042180.5A CN103091652B (en) | 2013-02-04 | 2013-02-04 | For the mammary gland magnetic resonance RF receiving coil of magnetic resonance imaging system |
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| CN201310042180.5A CN103091652B (en) | 2013-02-04 | 2013-02-04 | For the mammary gland magnetic resonance RF receiving coil of magnetic resonance imaging system |
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Cited By (4)
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| CN108652631A (en) * | 2018-05-24 | 2018-10-16 | 安徽大中润科技有限公司 | Mammary gland magnetic resonance is imaged and intervention integrated apparatus and its box body |
| CN110090020A (en) * | 2019-03-07 | 2019-08-06 | 中国科学技术大学 | A kind of mammary gland magnetic resonance elastogram exciting bank and system |
| CN111537929A (en) * | 2020-04-20 | 2020-08-14 | 联影(常州)医疗科技有限公司 | Radio frequency coil assembly and magnetic resonance system |
| CN112137619A (en) * | 2020-09-30 | 2020-12-29 | 达研医疗技术（合肥）有限公司 | Mammary gland coil positioning scanning imaging method |
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| CN111537929A (en) * | 2020-04-20 | 2020-08-14 | 联影(常州)医疗科技有限公司 | Radio frequency coil assembly and magnetic resonance system |
| CN112137619A (en) * | 2020-09-30 | 2020-12-29 | 达研医疗技术（合肥）有限公司 | Mammary gland coil positioning scanning imaging method |
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|---|---|
| CN103091652B (en) | 2015-09-02 |
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