CN204389667U - A kind of egg coil device for magnetic resonance imaging - Google Patents
A kind of egg coil device for magnetic resonance imaging Download PDFInfo
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- CN204389667U CN204389667U CN201420817631.8U CN201420817631U CN204389667U CN 204389667 U CN204389667 U CN 204389667U CN 201420817631 U CN201420817631 U CN 201420817631U CN 204389667 U CN204389667 U CN 204389667U
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- resonance imaging
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Abstract
The utility model discloses a kind of egg coil device for magnetic resonance imaging, comprise support, support column and radio-frequency coil mechanism, it is characterized in that, support column is arranged on the top of the center of support, the center of support column is provided with shrinkage pool, cavity is provided with between the outside surface of support column and dimpled surface, radio-frequency coil mechanism is arranged on the inside of cavity, radio-frequency coil mechanism comprises toroid winding and saddle-type coil, toroidal number is no less than three, and the number of saddle-type coil is no less than one.The utility model can make egg to be measured steadily place, avoid damaging eggshell, and then make egg embryo can continue to grow and carry out follow-up correlative study, the four-way radio circuit be made up of toroid winding and saddle-type coil in the utility model can realize efficient Signal reception effect, ensure that high s/n ratio and the high resolving power of coil.
Description
Technical field
The utility model relates to mr imaging technique field, specifically a kind of egg coil device for magnetic resonance imaging.
Background technology
The hydrogen nuclei spin that magnetic resonance imaging MRI system adopts the uniform strong magnetic field of autonomous magnetic system B0 to treat in imaging body polarizes, magnetic polarization nuclear spin produces magnetic moment i in human body, this magnetic moment i points to main field direction when stable state, if do not encourage disturbance, can not produce useful information.
Produce NMR signal NMR by uniform radio frequency magnetic excitation magnetic moment, thus obtain magnetic resonance imaging system MRI data, radio frequency magnetic field is called and excites magnetic field or B1 magnetic field.Radio-frequency sending coil produces B1 magnetic field at the image-region of required detection, and this radio-frequency sending coil is by adopting driving by computer-controlled radiofrequency launcher of power amplifier.In excitation process, nuclei spin system absorbs energy, makes magnetic moment around the precession of main field direction.After excitation, the magnetic moment of precession will experience free induction decay FID, discharge its energy absorbed and return stable state.In free induction decay FID, use the received RF coil detection NMR signal NMR being placed on body to be imaged and being excited near part.This NMR signal NMR is in the second voltage in received RF coil or electric current, this voltage or electric current induce by the precessing magnetic moment of tissue.Received RF coil can be transmitting coil itself also can be the absolute coil receiving only radiofrequency signal.Extra-pulse gradient magnetic is produced by the gradient coil be integrated in main field system, optionally excite the atomic nucleus in the voxel of required position, and frequency coding and phase encoding can be carried out to signal, thus determine its volume coordinate, eventually pass through Fourier transform, set up a complete magnetic resonance imaging.
In magnetic resonance imaging system MRI, the magnetic field's regularity that transmitting coil and receiving coil produce is the key factor obtaining high quality graphic.In the magnetic resonance imaging system of standard, usually adopt whole-body radio frequency coil to obtain best exciting field homogeneity for transmitting, whole-body radio frequency coil is radio-frequency coil maximum in system.But if use larger coil to receive simultaneously, then can produce lower signal to noise ratio snr, this is mainly because the signal generation tissue distance of such coil and imaging is far away.Because the most important thing is high s/n ratio SNR in magnetic resonance imaging system MRI, so adopt coils special to carry out radio frequency reception to improve the signal to noise ratio snr of required probe portion.But, 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.
Medical magnetic resonance system is except carrying out except image-forming diagnose to human body, and medical researchers is usually used for carrying out some animality experiments, to zoologizeing tissue, the growth course of organ and some pathological processes.Be in this demand, in succession develop magnetic resonance experiments mouse coil, magnetic resonance experiments rabbit coil etc.In recent years, people wish the growth course being studied egg embryo by magnetic resonance imaging system MRI, continue because embryo can be kept injury-free for magnetic resonance imaging system MRI to grow, this just overcomes the shortcoming must damaging embryo in the electron microscopy study egg embryo in the past usually adopted.But because the shape of egg is special, and three-dimensional dimension is very little, existing coil, even conventional rabbit, the zoopery coils such as mouse, are also difficult to carry out high-quality MRI imaging to egg.
Utility model content
The purpose of this utility model is to provide the egg coil device for magnetic resonance imaging that a kind of structure is simple, reliability is high, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of egg coil device for magnetic resonance imaging, comprise support, support column and radio-frequency coil mechanism, it is characterized in that, described support column is arranged on the top of the center of support, the center of described support column is provided with shrinkage pool, cavity is provided with between the outside surface of described support column and dimpled surface, described radio-frequency coil mechanism is arranged on the inside of cavity, radio-frequency coil mechanism comprises toroid winding and saddle-type coil, described toroidal number is no less than three, the uniform level of toroid winding is arranged in cavity, toroidal diameter successively decreases from top to bottom successively, described saddle-type coil is arranged in the cavity of toroid winding periphery, and the number of saddle-type coil is no less than one.
As further program of the utility model: described toroidal magnetic direction is all at the longitudinal direction perpendicular to magnetic resonance imaging system main field.
As the utility model further scheme: the magnetic direction of described saddle-type coil is at the horizontal direction perpendicular to magnetic resonance imaging system main field.
Compared with prior art, the beneficial effects of the utility model are:
The utility model can make egg to be measured steadily place, avoid damaging eggshell, and then make egg embryo can continue to grow and carry out follow-up correlative study, the four-way radio circuit be made up of toroid winding and saddle-type coil in the utility model can realize efficient Signal reception effect, ensure that high s/n ratio and the high resolving power of coil.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model.
Fig. 2 is cut-open view of the present utility model.
In figure: 1-support; 2-support column; 3-shrinkage pool; 4-radio-frequency coil mechanism; 5-toroid winding; 8-saddle-type coil; 9-cavity.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1-2, a kind of egg coil device for magnetic resonance imaging, be placed in magnetic resonance imaging system, the described egg coil device for magnetic resonance imaging comprises support 1, support column 2 and radio-frequency coil mechanism 4, described support 1 is circular, described support column 2 is arranged on the top of the center of support 1, the center of described support column 2 is provided with shrinkage pool 3, the shape of described shrinkage pool 3 is oval, be used for placing egg, cavity 9 is provided with between the outside surface of described support column 2 and shrinkage pool 3 surface, described radio-frequency coil mechanism 4 is arranged on the inside of cavity 9, radio-frequency coil mechanism 4 comprises toroid winding 5 and saddle-type coil 8, the number of described toroid winding 5 is no less than three, the uniform level of toroid winding 5 is arranged in cavity 9, the diameter of toroid winding 5 successively decreases from top to bottom successively, described saddle-type coil 8 is arranged in the cavity 9 of toroid winding 5 periphery, and the number of saddle-type coil 8 is no less than one.The magnetic direction of described toroid winding 5 is all perpendicular to the longitudinal direction of main field in magnetic resonance imaging system, and the magnetic direction of described saddle-type coil 8 is perpendicular to the horizontal direction of main field in magnetic resonance imaging system.
The utility model can make egg to be measured steadily place, avoid damaging eggshell, and then make egg embryo can continue to grow and carry out follow-up correlative study, the four-way radio circuit be made up of toroid winding 5 and saddle-type coil 8 in the utility model can realize efficient Signal reception effect, ensure that high s/n ratio and the high resolving power of coil.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (3)
1. the egg coil device for magnetic resonance imaging, comprise support (1), support column (2) and radio-frequency coil mechanism (4), it is characterized in that, described support column (2) is arranged on the top of the center of support (1), the center of described support column (2) is provided with shrinkage pool (3), cavity (9) is provided with between the outside surface of described support column (2) and shrinkage pool (3) surface, described radio-frequency coil mechanism (4) is arranged on the inside of cavity (9), radio-frequency coil mechanism (4) comprises toroid winding (5) and saddle-type coil (8), the number of described toroid winding (5) is no less than three, the uniform level of toroid winding (5) is arranged in cavity (9), the diameter of toroid winding (5) successively decreases from top to bottom successively, described saddle-type coil (8) is arranged in the peripheral cavity (9) of toroid winding (5), and the number of saddle-type coil (8) is no less than one.
2. the egg coil device for magnetic resonance imaging according to claim 1, is characterized in that, the magnetic direction of described toroid winding (5) is at the longitudinal direction perpendicular to magnetic resonance imaging system main field.
3. the egg coil device for magnetic resonance imaging according to claim 1, is characterized in that, the magnetic direction of described saddle-type coil (8) is at the horizontal direction perpendicular to magnetic resonance imaging system main field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817631.8U CN204389667U (en) | 2014-12-22 | 2014-12-22 | A kind of egg coil device for magnetic resonance imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817631.8U CN204389667U (en) | 2014-12-22 | 2014-12-22 | A kind of egg coil device for magnetic resonance imaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204389667U true CN204389667U (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420817631.8U Withdrawn - After Issue CN204389667U (en) | 2014-12-22 | 2014-12-22 | A kind of egg coil device for magnetic resonance imaging |
Country Status (1)
| Country | Link |
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| CN (1) | CN204389667U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785294A (en) * | 2014-12-22 | 2016-07-20 | 上海辰光医疗科技股份有限公司 | Egg radio frequency coil device for magnetic resonance imaging |
| CN106501294A (en) * | 2016-09-22 | 2017-03-15 | 大连工业大学 | The method of temperature spot and time point in situ detection quail egg heating process of setting |
-
2014
- 2014-12-22 CN CN201420817631.8U patent/CN204389667U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785294A (en) * | 2014-12-22 | 2016-07-20 | 上海辰光医疗科技股份有限公司 | Egg radio frequency coil device for magnetic resonance imaging |
| CN105785294B (en) * | 2014-12-22 | 2018-08-21 | 上海辰光医疗科技股份有限公司 | A kind of egg coil device for magnetic resonance imaging |
| CN106501294A (en) * | 2016-09-22 | 2017-03-15 | 大连工业大学 | The method of temperature spot and time point in situ detection quail egg heating process of setting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150610 Effective date of abandoning: 20180821 |