CN204649945U - Mammary gland magnetic resonance RF receiving coil circuit structure - Google Patents
Mammary gland magnetic resonance RF receiving coil circuit structure Download PDFInfo
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- CN204649945U CN204649945U CN201520349891.1U CN201520349891U CN204649945U CN 204649945 U CN204649945 U CN 204649945U CN 201520349891 U CN201520349891 U CN 201520349891U CN 204649945 U CN204649945 U CN 204649945U
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Abstract
The utility model provides a kind of mammary gland magnetic resonance RF receiving coil circuit structure, this receiving coil circuit structure comprises at least two receiving coil unit that symmetrical ring is respectively around in both sides breast, each receiving coil unit comprises: at least two the first coil channel, is located on root circle and the teat placement of breast respectively; Multiple second coil channel, be between two connected with around breast the wall of the chest and between two the first coil channel; Multiple tertiary coil passage, is connected between two and is arranged at Paramammary transaxillary position, and be positioned at the first coil expanding channels of the wall of the chest.The utility model increases the scanning coverage to mammary gland, axillary lymph and wall of the chest tissue, and improves picture quality and image conformity further.
Description
Technical field
The utility model relates to a kind of receiving coil circuit structure, is specifically related to a kind of circuit structure of the mammary gland magnetic resonance RF receiving coil being applicable to use in horizontal magnetic resonance imaging system.
Background technology
Magnetic resonance imaging (MRI) ultimate principle 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, angle of precession increases, after rf wave stops, those protons can return to original state again gradually, and the radiofrequency signal that release is identical with field wave frequency simultaneously, this physical phenomenon is called as nuclear magnetic resonance.Mr imaging technique utilizes this principle, by a Pulsed filed gradient additional in main field, optionally excite the atomic nucleus in the human body of required position, then the NMR signal that atomic nucleus produces is received, finally carry out Fourier transform in a computer, frequency coding and phase encoding are carried out to these signals, thus sets up a complete magnetic resonance image (MRI).
MR imaging apparatus comprises radio-frequency sending coil and received RF coil, be respectively used to the NMR signal producing Pulsed filed gradient and receive atomic nucleus generation, received RF coil can be transmitting coil itself also can be the absolute coil receiving only radiofrequency signal.In magnetic resonance imaging system, Signal-to-Noise (SNR) height that the good and receiving coil of the magnetic field homogeneity that transmitting coil produces receives is the key factor obtaining high quality graphic.The method improving signal to noise ratio (S/N ratio) has two kinds, one is quadrature receiving, and another kind is phased-array coil technology, and the latter uses multiple independently small coil to cover this region together, because the noise of the very zonule only closing on coil just can enter coil, therefore, it is possible to effectively improve signal to noise ratio (S/N ratio).But when transmitting and receiving coil is same coil, use phased-array coil can there is a problem, be namely difficult to the magnetic field's regularity ensureing that coil produces, this problem is especially embodied in the magnetic resonance imager for detecting partes corporis humani position.Because the shape of each physiological site of human body is different, very irregular again, and size also difference is very large, so how according to the physiological structure feature at each position of human body, arrange coil circuit dexterously, thus the comparatively uniform Distribution of Magnetic Field of acquisition and larger detection sensitivity are the maximum tasks of coil design personnel in the world always.
Along with the development of magnetic resonance detection technique, the importance of mammary gland disease examination and diagnosis more and more comes into one's own, be specifically designed to the signal to noise ratio (S/N ratio) that the designing requirement of the magnetic resonance radio frequency receiving coil of galactophore scanning is higher, larger surface sweeping scope and evenly signal distributions, to improve examination and the diagnosis of mammary gland disease.
Utility model content
For overcoming the defect existing for prior art, now providing a kind of mammary gland magnetic resonance RF receiving coil circuit structure, to increase the scanning coverage to mammary gland, axillary lymph and wall of the chest tissue, and improving scan image quality and image conformity further.
For achieving the above object, provide a kind of mammary gland magnetic resonance RF receiving coil circuit structure, this receiving coil circuit structure comprises at least two receiving coil unit that symmetrical ring is respectively around in both sides breast, and each receiving coil unit comprises:
At least two the first coil channel, respectively corresponding root circle and the teat placement being located on breast;
Multiple second coil channel, is connected between two with correspondence around the wall of the chest of breast and between two the first coil channel;
Multiple tertiary coil passage, be between two connected and correspondence is arranged at Paramammary transaxillary position, and be positioned at the first coil expanding channels of breast root circle.
The beneficial effect of the utility model mammary gland magnetic resonance RF receiving coil circuit structure is,
By being arranged at the coil channel of human chest diverse location to increase the scanning coverage to mammary gland, axillary lymph and wall of the chest tissue.
Preferably, the second coil channel is overlapping between two, and tertiary coil passage is connected with the first coil channel overlapping being positioned at the wall of the chest, and then realizes decoupling.
Preferably, by adding electric capacity, inductance or low input impedance amplifier between the first coil channel, the second coil channel and tertiary coil passage, and then decoupling is realized.
Preferably, tertiary coil passage is around the chest measurement arranged end between two of human body.
Preferably, tertiary coil passage is along the height direction arranged end between two of human body.
The beneficial effect of above two kinds of technical schemes is, realizes multi-angle direction of scanning by different coil arrangement, makes coverage wider.
Preferably, receiving coil circuit structure is arranged on a breast pedestal, breast pedestal comprises the substrate of ring chest and to be raised at least two emulated breasts of substrate pullover, the pullover top of each emulated breast is equipped with at least one first coil channel with foundation ring is corresponding respectively, second coil channel is surrounded on the pullover outer wall of emulated breast, and tertiary coil channel setting is on substrate.
Preferably, first coil channel and tertiary coil passage are annular, second coil channel comprises the second coil channel of two annular the second coil channel and two butterflies, overlapping the second coil channel being connected with a butterfly between adjacent two annular the second coil channel.
Preferably, each receiving coil unit comprises: two the first coil channel; Four the second coil channel; And two tertiary coil passages.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of embodiment one in the utility model mammary gland magnetic resonance RF receiving coil circuit structure;
Fig. 2 is the one-piece construction schematic diagram of embodiment two in the utility model mammary gland magnetic resonance RF receiving coil circuit structure.
Embodiment
For the benefit of to the understanding of structure of the present utility model, be described below in conjunction with drawings and Examples.
Embodiment one:
With reference to Fig. 1, it is the one-piece construction schematic diagram of embodiment one in the utility model mammary gland magnetic resonance RF receiving coil circuit structure.As shown in Figure 1, the utility model provide firstly a kind of mammary gland magnetic resonance RF receiving coil circuit structure, this receiving coil circuit structure comprises at least two receiving coil unit that symmetrical ring is respectively around in both sides breast, each receiving coil unit comprises: at least two annular the first coil channel 1, is parallel to each other and corresponding root circle and the teat placement being located on breast respectively; Second coil channel 2 of multiple annular or butterfly, overlapping connection between two with correspondence around the wall of the chest of breast and between two the first coil channel 1, overlapping the second coil channel 2 being connected with a butterfly between adjacent two annular the second coil channel 2, for the magnetic resonance signal of detection along human body chest measurement direction; The tertiary coil passage 3 of multiple annular, overlapping connection between two correspondence is arranged at Paramammary transaxillary position, and be connected with the first coil channel 1 being positioned at breast root circle is overlapping.Coil channel can realize decoupling preferably by overlapping connected mode.Each coil channel above-mentioned is all formed, in order to realize the receiving function of magnetic resonance imaging by printed circuit board (PCB) or copper wires.
Particularly, receiving coil circuit structure is arranged on a breast pedestal 4, breast pedestal 4 comprises the substrate 40 of ring chest and is raised at least two emulated breasts pullover 42 of substrate 40, the top of each emulated breast pullover 42 is equipped with at least one first coil channel 1 with foundation ring is corresponding respectively, four the second coil channel 2 are surrounded on the outer wall of emulated breast pullover 42, and two tertiary coil passages 3 to be arranged on substrate 40 and along the height direction folded array between two of human body.By adding electric capacity, inductance or low input impedance amplifier between first coil channel 1, second coil channel 2 and tertiary coil passage 3, and then realize decoupling better.
Embodiment two:
With reference to Fig. 2, it is the one-piece construction schematic diagram of embodiment two in the utility model mammary gland magnetic resonance RF receiving coil circuit structure.As shown in Figure 2, on the basis of embodiment one, by the chest measurement between two arranged end of above-mentioned two tertiary coil passages 3 around human body, other structures are basic identical with embodiment one, and therefore, no longer this adds to repeat.
After completing above-mentioned implementation process, following characteristics of the present utility model should be able to be embodied:
Realize the signal to noise ratio (S/N ratio) that mammary gland magnetic resonance RF receiving coil provides higher, larger sweep limit and evenly signal distributions, and can support human body up and down, the parallel scan in three directions in left and right and front and back.
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make many variations example to the utility model according to the above description.Thus, some details in embodiment should not formed restriction of the present utility model, the utility model by the scope that defines using appended claims as protection domain.
Claims (8)
1. a mammary gland magnetic resonance RF receiving coil circuit structure, is characterized in that, described receiving coil circuit structure comprises at least two receiving coil unit that symmetrical ring is respectively around in both sides breast, and each described receiving coil unit comprises:
At least two the first coil channel, respectively corresponding root circle and the teat placement being located on described breast;
Multiple second coil channel, is connected between two with correspondence around the wall of the chest of described breast and between two described first coil channel;
Multiple tertiary coil passage, be between two connected and correspondence is arranged at described Paramammary transaxillary position, and be positioned at the described described first coil expanding channels enclosed.
2. mammary gland magnetic resonance RF receiving coil circuit structure according to claim 1, is characterized in that,
Described second coil channel is overlapping between two, and described tertiary coil passage is connected with the described first coil channel overlapping being positioned at the described wall of the chest, and then realizes decoupling.
3. mammary gland magnetic resonance RF receiving coil circuit structure according to claim 2, is characterized in that,
By adding electric capacity, inductance or low input impedance amplifier between described first coil channel, described second coil channel and described tertiary coil passage, and then realize decoupling.
4. mammary gland magnetic resonance RF receiving coil circuit structure according to claim 1, is characterized in that,
Described tertiary coil passage is around the chest measurement arranged end between two of human body.
5. mammary gland magnetic resonance RF receiving coil circuit structure according to claim 1, is characterized in that,
Described tertiary coil passage is along the height direction arranged end between two of human body.
6. mammary gland magnetic resonance RF receiving coil circuit structure according to claim 1, is characterized in that,
Described receiving coil circuit structure is arranged on a breast pedestal, described breast pedestal comprises the substrate of ring chest and to be raised at least two emulated breasts of described substrate pullover, the pullover top of each described emulated breast is equipped with the first coil channel described at least one with foundation ring is corresponding respectively, described second coil channel is surrounded on the pullover outer wall of described emulated breast, and described tertiary coil channel setting is on described substrate.
7. the mammary gland magnetic resonance RF receiving coil circuit structure according to claim 1 to 5 any one, is characterized in that,
Described first coil channel and described tertiary coil passage are annular, described second coil channel comprises the second coil channel of two annular the second coil channel and two butterflies, overlapping described second coil channel being connected with a butterfly between adjacent two annular described second coil channel.
8. mammary gland magnetic resonance RF receiving coil circuit structure according to claim 7, is characterized in that, each described receiving coil unit comprises:
Two described first coil channel; Four described second coil channel; And two described tertiary coil passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520349891.1U CN204649945U (en) | 2015-05-27 | 2015-05-27 | Mammary gland magnetic resonance RF receiving coil circuit structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520349891.1U CN204649945U (en) | 2015-05-27 | 2015-05-27 | Mammary gland magnetic resonance RF receiving coil circuit structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105559783A (en) * | 2016-02-03 | 2016-05-11 | 汪红志 | Semi-open nuclear magnetic resonance imaging system and application thereof in mammary gland imaging |
| 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 |
| CN114019436A (en) * | 2021-11-09 | 2022-02-08 | 深圳先进技术研究院 | Magnetic resonance coil |
| WO2023082038A1 (en) * | 2021-11-09 | 2023-05-19 | 深圳先进技术研究院 | Magnetic resonance coil |
-
2015
- 2015-05-27 CN CN201520349891.1U patent/CN204649945U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105559783A (en) * | 2016-02-03 | 2016-05-11 | 汪红志 | Semi-open nuclear magnetic resonance imaging system and application thereof in mammary gland imaging |
| CN105559783B (en) * | 2016-02-03 | 2019-02-19 | 汪红志 | A kind of semi open model MRI system and its application on breast imaging |
| 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 |
| CN114019436A (en) * | 2021-11-09 | 2022-02-08 | 深圳先进技术研究院 | Magnetic resonance coil |
| WO2023082038A1 (en) * | 2021-11-09 | 2023-05-19 | 深圳先进技术研究院 | Magnetic resonance coil |
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