CN203224611U - Magnetic resonance imaging superconducting magnet central area magnetic field measuring device - Google Patents
Magnetic resonance imaging superconducting magnet central area magnetic field measuring device Download PDFInfo
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- CN203224611U CN203224611U CN2012206865590U CN201220686559U CN203224611U CN 203224611 U CN203224611 U CN 203224611U CN 2012206865590 U CN2012206865590 U CN 2012206865590U CN 201220686559 U CN201220686559 U CN 201220686559U CN 203224611 U CN203224611 U CN 203224611U
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- 238000002595 magnetic resonance imaging Methods 0.000 title abstract description 5
- 239000000523 sample Substances 0.000 claims abstract description 42
- 238000009434 installation Methods 0.000 claims abstract description 32
- 238000005259 measurement Methods 0.000 claims abstract description 23
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- 238000010586 diagram Methods 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 8
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- 238000000034 method Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
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Abstract
The utility model discloses a magnetic resonance imaging superconducting magnet central area magnetic field measuring device comprising a magnetic measuring probe and an adjusting supporting rack. The adjusting supporting rack comprises an axial adjusting rod, which is coaxial to an inner cylinder of a superconducting magnet; a radial supporting part used for installation of the axial adjusting rod; and a height adjusting part disposed on the axial adjusting rod. The axial adjusting rod is cooperated with the height adjusting part, and therefore the magnetic measuring probe can be used for the magnetic field measurement in any direction in the space, and the adjusting capability of the adjusting device can be expanded.
Description
Technical field
The utility model relates to the mr imaging technique field, more particularly, and particularly a kind of magnetic resonance image-forming superconducting magnet center magnetic field measuring device.
Background technology
Magnetic resonance imaging (MRI) has become one of main means of modern medicine imaging.The height of its image quality and work efficiency depends on the quality of magnet center imaging area basis uniformity of magnetic field to a great extent.
The superconducting magnetic resonance image magnet of general medicine whole body imaging need have even one static magnetic field in the magnetic field center diameter is the ball territory of 50cm, the root-mean-square value of magnetic field deviation will reach about 10ppm.Yet because the deviation of bringing in the actual manufacture process of magnet, for excellent in design and the careful magnetic resonance image-forming superconducting magnet of finishing that assembles, its main field unevenness also can only reach about root mean square 100ppm.Therefore, the superconducting magnetic resonance image magnet must just can make the main field uniformity coefficient of magnet reach imaging requirements by shimming after excitation.
In to magnet shimming process, we at first need accurately to measure the Distribution of Magnetic Field on the shimming district object ball field surface, and the data computation magnetic field unevenness with measuring judges whether to reach the shimming requirement.The selection of center shimming zone position will determine the quality of final shimming effect, and existing magnetic resonance image-forming superconducting magnet center magnetic field measuring device (center magnetic field measuring device) is limited in scope in the searching adjusted for the magnetic field center position (when seeking the center, regulating power is limited), and waste time and energy, be difficult to guarantee the precision of position adjustments.
So given magnetic field measuring device that is used for the magnetic resonance image-forming superconducting magnet center of the utility model, by adjustment be fixed in the superconducting magnet inner core or the gradient coil that matches in radially adjustable supporter and axial adjustable rotating shaft, under the condition that guarantees position adjustment precision, can search out imaging area magnetic field center position quickly and easily and carry out magnetic-field measurement, greatly improve the shimming efficient of magnetic resonance imaging district main field.
The utility model content
The technical problems to be solved in the utility model is for providing a kind of magnetic resonance image-forming superconducting magnet center magnetic field measuring device, in the utility model, this magnetic resonance image-forming superconducting magnet center magnetic field measuring device can make that by its structural design surveying magnetic probe carries out magnetic-field measurement at any dimensional orientation.
For solving the problems of the technologies described above, the utility model provides a kind of magnetic resonance image-forming superconducting magnet center magnetic field measuring device, is installed in the superconducting magnet inner core, comprise be used to the survey magnetic probe that carries out magnetic-field measurement,
Also comprise the adjusting bracing frame, described adjusting bracing frame is arranged at and is used for installing described survey magnetic probe in the superconducting magnet inner core;
Described adjusting bracing frame comprises: with the axial adjustment bar of the coaxial setting of superconducting magnet inner core, be used for that the radial support parts of described axial adjustment bar are installed and the height that is arranged on the described axial adjustment bar is regulated parts;
Described axial adjustment bar is arranged on the described radial support parts rotationally;
Described height is regulated parts and is mounted slidably on described axial adjustment bar;
Described survey magnetic probe is mounted slidably in described height and regulates on the parts.
Preferably, described radial support parts comprise the radial support bar of the collar being installed and being arranged at described installation collar outer rim place; Described axial adjustment bar is arranged on the described installation collar rotationally; Described radial support bar is three, and adjacent described radial support bar vertically arranges; The inwall butt of described radial support bar and superconducting magnet inner core.
Preferably, the rod end of axial adjustment bar is provided with swing handle, is set with index dial on the described installation collar, and described swing handle is positioned at a side of described index dial.
Preferably, described radial support bar is telescopic rod.
Preferably, described radial support bar comprises mobile jib and adjusting sleeve pipe, and described mobile jib is connected with the described installation collar, and described adjusting sleeve pipe is threaded with the inwall butt of superconducting magnet inner core and with described mobile jib.
Preferably, be arranged with installation sleeve on the described axial adjustment bar; Has the sliding eye of offering along the axis direction of described axial adjustment bar on the described installation sleeve; Described height is regulated parts and is provided with bolt, and described bolt passes described sliding eye and described axial adjustment bar butt.
Preferably, the length direction of the described sliding eye in described installation sleeve upper edge is provided with the length adjustment scale.
Preferably, described height is regulated on the parts and is offered mounting groove, and described survey magnetic probe is mounted slidably in described mounting groove, and described height is regulated parts and is provided with retaining collar, and described retaining collar is positioned described height by bolt and regulates on the parts.
Preferably, described height is regulated parts and is provided with scale along its length direction.
The utility model also provides a kind of magnetic resonance device, comprise the superconducting magnet inner core, described superconducting magnet inner core is provided with gradient coil, comprise that also as above-mentioned magnetic resonance image-forming superconducting magnet center magnetic field measuring device, the adjusting bracing frame of described magnetic resonance image-forming superconducting magnet center magnetic field measuring device is arranged in the described superconducting magnet inner core.
The utility model provides a kind of magnetic resonance image-forming superconducting magnet center magnetic field measuring device, comprising: survey magnetic probe and regulate bracing frame.
Regulate bracing frame and be used for carrying out the adjusting of locus to surveying magnetic probe, regulate bracing frame and be arranged in the superconducting magnet inner core, the survey magnetic probe is installed on it, thereby can realizes the magnetic-field measurement to each locus in the superconducting magnet inner core.
The adjusting bracing frame comprises: with the axial adjustment bar of the coaxial setting of superconducting magnet inner core, be used for installation shaft and regulate parts to the radial support parts of adjuster bar and the height that is arranged on the axial adjustment bar.
The axial adjustment bar is provided with for the height of surveying magnetic probe is installed and regulates parts, highly regulates parts and can rotate with the axial adjustment bar, and the survey magnetic probe of installing on the height regulating rod forms the movement locus of a circle.Survey the installation site of magnetosheath head on height regulating rod by regulating, can make that surveying magnetic probe carries out magnetic-field measurement with respect to the space of axial adjustment bar different radii distance.
The axial adjustment bar is arranged on the radial support parts rotationally, highly regulating parts is mounted slidably on the axial adjustment bar, be mounted slidably in the structural design of highly regulating on the parts in conjunction with surveying magnetic probe, can make that surveying the no dead angle of magnetic probe in the superconducting magnet inner core measures, and has expanded the regulating power of regulating device.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 is the mounted configuration synoptic diagram of magnetic resonance image-forming superconducting magnet center magnetic field measuring device among a kind of embodiment of the utility model;
Fig. 2 is the structural representation of magnetic resonance image-forming superconducting magnet center magnetic field measuring device among a kind of embodiment of the utility model;
Fig. 3 is the partial structurtes synoptic diagram of radial support bar among a kind of embodiment of the utility model;
Fig. 4 is the partial structurtes synoptic diagram of axial adjuster bar among a kind of embodiment of the utility model;
Fig. 5 is the partial structurtes synoptic diagram of axial adjuster bar among the another kind of embodiment of the utility model;
The corresponding relation of component names and Reference numeral is among Fig. 1 to Fig. 5:
Axial adjustment bar 1; Installation sleeve 1a;
Highly regulate parts 2;
Superconducting magnet inner core a.
Embodiment
Core of the present utility model is for providing a kind of magnetic resonance image-forming superconducting magnet center magnetic field measuring device, in the utility model, this magnetic resonance image-forming superconducting magnet center magnetic field measuring device can make that by its structural design surveying magnetic probe carries out magnetic-field measurement at any dimensional orientation.
In order to make those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 and Fig. 2, wherein, Fig. 1 is the mounted configuration synoptic diagram of magnetic resonance image-forming superconducting magnet center magnetic field measuring device among a kind of embodiment of the utility model; Fig. 2 is the structural representation of magnetic resonance image-forming superconducting magnet center magnetic field measuring device among a kind of embodiment of the utility model.
The utility model provides a kind of magnetic resonance image-forming superconducting magnet center magnetic field measuring device, is used for the Distribution of Magnetic Field in magnetic field, MR imaging apparatus center is measured.For employed MR imaging apparatus in the present prior art, it comprises the superconducting magnet inner core a with excitation effect, the magnetic resonance image-forming superconducting magnet center magnetic field measuring device that the utility model provides (abbreviates as: measurement mechanism) be installed among the superconducting magnet inner core a for convenience of description, below.
In the utility model, measurement mechanism comprises: survey magnetic probe and regulate bracing frame, wherein:
Survey magnetic probe and adopt and uses conventional survey magnetic probe in the prior art, for carrying out magnetic-field measurement, magnetic resistance sensor etc. for example, its concrete structure is not given unnecessary details at this.
Regulate bracing frame and be used for carrying out the adjusting of locus to surveying magnetic probe, regulate bracing frame and be arranged in the superconducting magnet inner core a, the survey magnetic probe is installed on it, thereby can realizes the magnetic-field measurement to each locus among the superconducting magnet inner core a.
In the specific embodiment in the utility model, regulate bracing frame and comprise: with the axial adjustment bar 1 of the coaxial setting of superconducting magnet inner core a, be used for installation shaft and regulate parts 2 to the radial support parts of adjuster bar 1 and the height that is arranged on the axial adjustment bar 1.
Superconducting magnet inner core a adopts columnar structured design, the adaptive gradient coil that is equipped with on it, and therefore, the magnetic field among the superconducting magnet inner core a is that symcenter distributes with its axis.Therefore, the axis coaxle setting of the axis of axial adjustment bar 1 and superconducting magnet inner core a when axial adjustment bar 1 rotates, can realize the magnetic-field measurement to the spherical (face of cylinder) of superconducting magnet inner core a inside.
The radial support parts act as back shaft to adjuster bar 1, guarantee that axial adjustment bar 1 stably is arranged among the superconducting magnet inner core a, improves its measuring accuracy.
Axial adjustment bar 1 is provided with for the height of surveying magnetic probe is installed and regulates parts 2, highly regulates parts 2 and can rotate with axial adjustment bar 1, and the survey magnetic probe of installing on the height regulating rod forms the movement locus of a circle.Surveying magnetic probe is mounted slidably in highly regulating on the parts 2, survey the installation site (be equivalent to regulate the radius of turn of its movement locus) of magnetosheath head on height regulating rod by regulating, can make that surveying magnetic probe carries out magnetic-field measurement with respect to the space of axial adjustment bar 1 different radii distance.
Axial adjustment bar 1 is arranged on the radial support parts rotationally, highly regulating parts 2 is mounted slidably on axial adjustment bar 1, be mounted slidably in the structural design of highly regulating on the parts 2 in conjunction with surveying magnetic probe, can make that surveying the no dead angle of magnetic probe in superconducting magnet inner core a measures.It is implemented as follows states.
At first drafting coordinate system, is the Z axle with the axis of axial adjustment bar 1, forms X-Y plane in the plane of adjuster bar 1 perpendicular to axial direction, and the supposition X-Y plane can change with highly regulating parts 2, guarantees to survey magnetic probe and is positioned at X-Y plane all the time;
Highly regulate parts 2 and be mounted slidably on axial adjustment bar 1, regulate that highly the survey magnetic probe being installed on the parts 2, realized that so the survey magnetic probe is mobile on the Z axle;
Axial adjustment bar 1 can drive highly regulates parts 2 rotation, and surveys magnetic probe and be mounted slidably in highly regulating on the parts 2, has realized that so the survey magnetic probe regulates arbitrarily in X-Y plane;
In sum, can realize adjusting on the X-Y-Z three-dimensional owing to survey magnetic probe at superconducting magnet inner core a, make survey magnetic probe can be in superconducting magnet inner core a the adjusting on the dimensional orientation arbitrarily, expanded the regulating power of regulating device.
Particularly, in the present embodiment, the radial support bar 3 that the radial support parts comprise installation sleeve 1a ring and are arranged at installation sleeve 1a ring outer rim place; Axial adjustment bar 1 is arranged on the installation sleeve 1a ring rotationally; Radial support bar 3 is three, and adjacent radial support bar 3 vertically arranges; The inwall butt of radial support bar 3 and superconducting magnet inner core a.
In the above-described embodiments, radial support bar 3 is three, wherein, takes to be horizontally disposed with for two, and another is taked vertically, and so radial support portion forms the T-shape structural design.In order to realize the stable support to axial adjustment bar 1, radial support portion is set to two, and is divided into the two ends of axial adjustment bar 1.Radial support portion is overlapped among (the inwall butt of radial support bar 3 and superconducting magnet inner core a) superconducting magnet inner core a, makes installation of the present utility model comparatively convenient.In use, only need measurement mechanism directly is positioned among the superconducting magnet inner core a and get final product.
Because axial adjustment bar 1 can rotate, thereby the circumference that makes the survey magnetic probe carry out magnetic field is measured operation.In order to improve magnetic-field measurement precision of the present utility model, the utility model is provided with swing handle at the rod end of axial adjustment bar 1, is set with index dial on the installation sleeve 1a ring, and swing handle is positioned at a side of index dial.The purpose that rotating handles is set is: be convenient to operating personnel's rotation axis to adjuster bar 1.Be provided with the index dial that fixedly installs with installation sleeve 1a ring, as the rotation normative reference that axial adjustment bar 1 is rotated, the yardstick foundation can be provided for the rotation of axial adjustment bar 1, can realize the uniformly-spaced rotation that axial adjustment bar 1 is circumferential, further improve the precision that the utility model is measured.
The magnetic resonance image-forming superconducting magnet center magnetic field measuring device request for utilization that the utility model provides is: guarantee that axial adjustment bar 1 is positioned on the central axis of superconducting magnet inner core a.But, because machining can occur radial support portion inevitably and scale error occur in process, cause axial adjustment bar 1 to depart from the central axis of superconducting magnet inner core a, reduced the reliability that detects data.
In order to carry out the centering operation to axial adjustment bar 1, make it coaxial with superconducting magnet inner core a, the radial support bar 3 that the utility model provides has adopted the telescopic rod structural design.By regulating the length of radial support bar 3, the adjusting that axial adjustment bar 1 is carried out on the locus.
Please refer to Fig. 3, wherein Fig. 3 is the partial structurtes synoptic diagram of radial support bar among a kind of embodiment of the utility model.
In an embodiment of the present utility model, radial support bar 3 comprises mobile jib 31 and regulates sleeve pipe 32, and mobile jib 31 is connected with installation sleeve 1a ring, the inwall butt of adjusting sleeve pipe 32 and superconducting magnet inner core a also and mobile jib 31 be threaded.
In another embodiment of the present utility model, radial support bar 3 comprises mobile jib 31 and regulates sleeve pipe 32, regulate on the sleeve pipe 32 and offer a plurality of adjustment holes or have microscler adjustment hole, mobile jib 31 is provided with the bolt with positioning action, bolt passes adjustment hole can apply acting force to regulating sleeve pipe 32, thereby making to regulate between sleeve pipe 32 and the mobile jib 31 fixes; Unclamp bolt and then can regulate length between sleeve pipe 32 and the mobile jib 31.
Please refer to Fig. 4, Fig. 4 is the partial structurtes synoptic diagram of axial adjuster bar among a kind of embodiment of the utility model.
Particularly, be arranged with installation sleeve 1a on the axial adjustment bar 1; Has the sliding eye that the axis direction of adjuster bar 1 is vertically offered on the installation sleeve 1a; Highly regulate parts 2 and be provided with bolt, bolt passes sliding eye and axial adjustment bar 1 butt.Highly regulate parts 2 and be threaded with bolt, highly regulate parts 2 and slide at installation sleeve 1a, after highly regulating parts 2 and moving to suitable position, the screwed in place bolt makes that highly to regulate parts 2 fixing.
As an Optimal Structure Designing scheme to above-mentioned design: highly regulate on the parts 2 and can be provided with clamp, clamp can be held on the axial adjustment bar 1, realizes highly regulating the fixing of parts 2.
Particularly, the length direction of installation sleeve 1a upper edge sliding eye is provided with the length adjustment scale, and being used for provides the size reference to the adjusting of highly regulating parts 2, reaches the purpose that improves measuring accuracy of the present utility model.
In the present embodiment, the concrete structure of highly regulating parts 2 is: offer mounting groove on it, surveying magnetic probe is mounted slidably in mounting groove, highly regulate parts 2 and be provided with retaining collar, retaining collar is used for surveying magnetic probe and is fixed in mounting groove, and retaining collar is positioned highly to regulate on the parts 2 by bolt.
Identical as above-mentioned structural design, highly regulate parts 2 and be provided with scale along its length direction.
Magnetic resonance device is a kind of be used to the equipment that carries out magnetic resonance imaging, comprises superconducting magnet inner core a, and superconducting magnet inner core a is provided with gradient coil.When the magnetic resonance image-forming superconducting magnet center magnetic field measuring device that uses the utility model to provide carried out magnetic field detection, the adjusting bracing frame of magnetic resonance image-forming superconducting magnet center magnetic field measuring device was arranged among the superconducting magnet inner core a.
Because the design of the special construction of magnetic resonance image-forming superconducting magnet center magnetic field measuring device can make that surveying magnetic probe does not have the dead angle measurement in superconducting magnet inner core a, solved the limited problem of range of adjustment in the prior art.
Please refer to Fig. 5, Fig. 5 is the partial structurtes synoptic diagram of axial adjuster bar among the another kind of embodiment of the utility model.
In the utility model, can also adopt the semi-round ring shape magnetic measurement apparatus of popping one's head in to carry out magnetic-field measurement more, semi-round ring shape is popped one's head in magnetic measurement apparatus by being bolted to the middle part of axial adjustment bar 1 more, make the pop one's head in center of magnetic measurement apparatus of semi-round ring shape overlap with axial adjustment bar 1 center simultaneously more, but utilize 1 rotation of axial adjustment bar just perfect measurement require Distribution of Magnetic Field on the fixed size sphere to the center.
After obtaining desired basic Distribution of Magnetic Field for the first time, carry out data analysis, determine whether initial center is the magnetic field center of magnet, if not, then according to the result of data analysis, carry out the position adjustment of measuring center by the radial and axial size adjustable coupling part of magnetic field measuring device, obtain new measurement data, carry out data analysis again, repeat this step, up to searching out satisfactory magnetic field center position;
If search out satisfactory magnetic field center position, then can carry out next step shimming work.
The magnetic resonance image-forming superconducting magnet center magnetic field measuring device that the utility model provides is that a kind of being applied to (excited by magnetic resonance device) in the magnetic field, is used for the device that Distribution of Magnetic Field is detected.Therefore, to those skilled in the art, for fear of the magnetic field of detecting is exerted an influence, the utility model preferentially selects for use nonmagnetic substance to make, for example macromolecular material (polypropylene) or aluminium alloy.
More than a kind of magnetic resonance image-forming superconducting magnet provided by the utility model center magnetic field measuring device is described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. a magnetic resonance image-forming superconducting magnet center magnetic field measuring device is installed in the superconducting magnet inner core (a), comprises be used to the survey magnetic probe that carries out magnetic-field measurement, it is characterized in that,
Also comprise the adjusting bracing frame, described adjusting bracing frame is arranged at and is used for installing described survey magnetic probe in the superconducting magnet inner core (a);
Described adjusting bracing frame comprises: with the axial adjustment bar (1) of the coaxial setting of superconducting magnet inner core (a), be used for that the radial support parts of described axial adjustment bar (1) are installed and the height that is arranged on the described axial adjustment bar (1) is regulated parts (2);
Described axial adjustment bar (1) is arranged on the described radial support parts rotationally;
Described height is regulated parts (2) and is mounted slidably on described axial adjustment bar (1);
Described survey magnetic probe is mounted slidably in described height and regulates on the parts (2).
2. magnetic resonance image-forming superconducting magnet according to claim 1 center magnetic field measuring device is characterized in that,
Described radial support parts comprise that installation sleeve (1a) encircles and be arranged at the radial support bar (3) at described installation sleeve (1a) ring outer rim place;
Described axial adjustment bar (1) is arranged on described installation sleeve (1a) ring rotationally; Described radial support bar (3) is three, and the vertical setting of adjacent described radial support bar (3);
The inwall butt of described radial support bar (3) and superconducting magnet inner core (a).
3. magnetic resonance image-forming superconducting magnet according to claim 2 center magnetic field measuring device, it is characterized in that, the rod end of axial adjustment bar (1) is provided with swing handle, is set with index dial on described installation sleeve (1a) ring, and described swing handle is positioned at a side of described index dial.
4. magnetic resonance image-forming superconducting magnet according to claim 2 center magnetic field measuring device is characterized in that described radial support bar (3) is telescopic rod.
5. magnetic resonance image-forming superconducting magnet according to claim 4 center magnetic field measuring device, it is characterized in that, described radial support bar (3) comprises mobile jib (31) and regulates sleeve pipe (32), described mobile jib (31) is connected with described installation sleeve (1a) ring, and described adjusting sleeve pipe (32) is threaded with the inwall butt of superconducting magnet inner core (a) and with described mobile jib (31).
6. magnetic resonance image-forming superconducting magnet according to claim 1 center magnetic field measuring device is characterized in that,
Be arranged with installation sleeve (1a) on the described axial adjustment bar (1);
Has the sliding eye of offering along the axis direction of described axial adjustment bar (1) on the described installation sleeve (1a);
Described height is regulated parts (2) and is provided with bolt, and described bolt passes described sliding eye and described axial adjustment bar (1) butt.
7. magnetic resonance image-forming superconducting magnet according to claim 6 center magnetic field measuring device is characterized in that the length direction of the described sliding eye in described installation sleeve (1a) upper edge is provided with the length adjustment scale.
8. according to each described magnetic resonance image-forming superconducting magnet center magnetic field measuring device of claim 1 to 7, it is characterized in that, described height is regulated on the parts (2) and is offered mounting groove, described survey magnetic probe is mounted slidably in described mounting groove, described height is regulated parts (2) and is provided with retaining collar, and described retaining collar is positioned described height by bolt and regulates on the parts (2).
9. magnetic resonance image-forming superconducting magnet according to claim 8 center magnetic field measuring device is characterized in that, described height is regulated parts (2) and is provided with scale along its length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206865590U CN203224611U (en) | 2012-12-12 | 2012-12-12 | Magnetic resonance imaging superconducting magnet central area magnetic field measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012206865590U CN203224611U (en) | 2012-12-12 | 2012-12-12 | Magnetic resonance imaging superconducting magnet central area magnetic field measuring device |
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| CN203224611U true CN203224611U (en) | 2013-10-02 |
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| CN2012206865590U Expired - Lifetime CN203224611U (en) | 2012-12-12 | 2012-12-12 | Magnetic resonance imaging superconducting magnet central area magnetic field measuring device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998633A (en) * | 2012-12-12 | 2013-03-27 | 中国科学院高能物理研究所 | Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area |
| CN103654790A (en) * | 2013-12-13 | 2014-03-26 | 绵阳市腾扬机电制品有限责任公司 | Magnet coil framework cylinder adjusting device of magnetic resonance medical instrument |
| CN104019730A (en) * | 2014-06-26 | 2014-09-03 | 西北核技术研究所 | Method and device for measuring magnetic center of quadrupole magnet |
| CN105527590A (en) * | 2014-10-21 | 2016-04-27 | 核工业西南物理研究院 | Support used for measuring magnetic field distribution of magnet |
| CN108279394A (en) * | 2018-02-12 | 2018-07-13 | 上海东软医疗科技有限公司 | A kind of supporting and positioning device of MRI water mould |
| CN110082694A (en) * | 2019-04-29 | 2019-08-02 | 上海东软医疗科技有限公司 | Magnetic field measuring device, magnetic resonance equipment and Measurement Method for Magnetic Field |
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2012
- 2012-12-12 CN CN2012206865590U patent/CN203224611U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998633A (en) * | 2012-12-12 | 2013-03-27 | 中国科学院高能物理研究所 | Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area |
| CN102998633B (en) * | 2012-12-12 | 2015-06-17 | 中国科学院高能物理研究所 | Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area |
| CN103654790A (en) * | 2013-12-13 | 2014-03-26 | 绵阳市腾扬机电制品有限责任公司 | Magnet coil framework cylinder adjusting device of magnetic resonance medical instrument |
| CN103654790B (en) * | 2013-12-13 | 2016-02-10 | 绵阳市腾扬机电制品有限责任公司 | A kind of magnet coil framework cylindrical shell adjusting device of magnetic resonance medical instrument |
| CN104019730A (en) * | 2014-06-26 | 2014-09-03 | 西北核技术研究所 | Method and device for measuring magnetic center of quadrupole magnet |
| CN104019730B (en) * | 2014-06-26 | 2016-12-07 | 西北核技术研究所 | The measuring method of a kind of quadrupole electromagnet magnetic center and device |
| CN105527590A (en) * | 2014-10-21 | 2016-04-27 | 核工业西南物理研究院 | Support used for measuring magnetic field distribution of magnet |
| CN105527590B (en) * | 2014-10-21 | 2018-08-21 | 核工业西南物理研究院 | Holder for measuring magnets magnetic fields distribution |
| CN108279394A (en) * | 2018-02-12 | 2018-07-13 | 上海东软医疗科技有限公司 | A kind of supporting and positioning device of MRI water mould |
| CN108279394B (en) * | 2018-02-12 | 2021-01-19 | 上海东软医疗科技有限公司 | Supporting and positioning device for MRI water model |
| CN110082694A (en) * | 2019-04-29 | 2019-08-02 | 上海东软医疗科技有限公司 | Magnetic field measuring device, magnetic resonance equipment and Measurement Method for Magnetic Field |
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