CN106725477B - Special radio frequency coil for vertical field magnetic resonance body intervention - Google Patents
Special radio frequency coil for vertical field magnetic resonance body intervention Download PDFInfo
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- CN106725477B CN106725477B CN201611103924.XA CN201611103924A CN106725477B CN 106725477 B CN106725477 B CN 106725477B CN 201611103924 A CN201611103924 A CN 201611103924A CN 106725477 B CN106725477 B CN 106725477B
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- 230000000007 visual effect Effects 0.000 claims abstract description 11
- 210000001015 abdomen Anatomy 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 241000276425 Xiphophorus maculatus Species 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 7
- 238000001356 surgical procedure Methods 0.000 description 6
- 230000003902 lesion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 231100000915 pathological change Toxicity 0.000 description 2
- 230000036285 pathological change Effects 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 206010063045 Effusion Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002697 interventional radiology Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940124597 therapeutic agent Drugs 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/06—Accessories for medical measuring apparatus
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- High Energy & Nuclear Physics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention provides a special radio frequency coil for intervention of a vertical field magnetic resonance body, which comprises a strip-shaped flexible coil body, wherein two ends of the flexible coil body are connected through bending, at least 2 visible windows are arranged on the flexible coil body, and a rigid circuit cover plate is connected on the flexible coil body. The beneficial effects of the invention are as follows: the beneficial effects of the invention are as follows: the plurality of visual windows increases the operation space of doctors for interventional operations and the like. Meanwhile, the coil is matched with a bracket for supporting the waist, and the bracket supports the body of the patient, so that the coil is not directly pressed by the patient, and the coil can be ensured to rotate freely.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a special radio frequency coil for intervention of a vertical field magnetic resonance body.
Background
Interventional radiology, also known as interventional therapeutics, is an emerging discipline that has been rapidly developed in recent years, incorporating imaging diagnosis and clinical treatment. Under the guidance and monitoring of digital subtraction angiography machine, CT, ultrasonic and magnetic resonance imaging equipment, the special instrument is led into the lesion site of human body through natural duct or tiny wound of human body by using puncture needle, catheter and other interventional equipment to make minimally invasive treatment. Minimally invasive interventions have been established as an alternative, with a more open procedure than traditional surgical procedures. The primary purpose is to locate, register, or provide access to a specific organ region, remove lesions or effusions, and treat tumors by application of thermal energy, electric fields, therapeutic agents, or radiation. Because the physician cannot control such a procedure under direct view, the assistance of images and navigation is critical to positioning and guidance. With the development and progress of current medical science and technology, computer performance and clinical experience, appropriate imaging technology and interventional devices for achieving the purpose are more required while the imaging technology is widely used.
MRI has well known diagnostic capabilities for tissue morphology and functional features, and this imaging modality is also a natural choice for interventional guidance. Under the guidance of high-definition magnetic resonance imaging (Magnetic Resonance Imaging, MRI), the minimally invasive surgery equipment and instruments are guided to accurately reach the surgery part through punching or direct puncture, under the monitoring of computer image real-time surgery, the accurate minimally invasive surgery treatment is implemented on the lesions by matching with a surgery planning and navigation system, the curative effect is immediately evaluated by the images in the surgery, and the errors possibly existing are timely corrected, so that the success of the surgery is ensured. On the premise of basically not damaging the functions of organs and tissues, the pathological changes are accurately treated, so that the accuracy of the operation is greatly improved, uncertain factors are reduced, the requirements on the experience of an operator are reduced, and the safety and the curative effect of the operation are ensured. MRI is a new guiding mode capable of overcoming the shortages of ultrasound and CT, and MRI overcomes the shortages of low resolution of soft tissues, limited penetration depth due to ultrasound guiding, air tissue interface reflection and CT ionizing radiation. In addition, MRI also has a variety of functional imaging and MR contrast agents may exhibit longer delayed enhancement lesions.
Magnetic resonance navigator intervention (Interventional MR) is a new concept and is now in an early stage of development. Magnetic resonance interventions require special techniques and open radio frequency coils.
At present, the examination of the pathological changes of a vertical field body is mainly completed by using a body coil, but the vertical field body is not suitable for magnetic resonance interventional operation, the coil cannot rotate relative to a patient, and the vertical field body does not have a structure with a continuous opening in the middle.
Disclosure of Invention
The invention provides a special radio frequency coil for intervention of a vertical field magnetic resonance body.
The aim of the invention is achieved by the following technical scheme:
the special radio frequency coil is intervened to flexible body portion of perpendicular field magnetic resonance, including a banded flexible coil body of winding in human belly, flexible coil body head and tail both ends are connected, be provided with two at least visual windows on the flexible coil body, be connected with rigid circuit apron on the flexible coil body.
Preferably, two circuit cover plates are arranged at intervals, and an inflatable air bag is detachably arranged on the inner side of the flexible coil body and is contacted with the waist and abdomen of a human body when the circuit cover plates are used.
Preferably, the circuit cover plate is provided with a connecting hole, the special coil inserted into the body part further comprises a binding belt penetrating through the connecting hole, and the air bag is connected with the flexible shell through a sticking buckle.
Preferably, the flexible coil body comprises a flexible housing and a coil assembly arranged in the flexible housing, the coil assembly comprises a 8-shaped coil unit and annular coil units which are partially overlapped with the 8-shaped coil unit, adjacent annular coil units are partially overlapped, and at least two annular coil units are arranged.
Preferably, the 8-shaped coil unit is formed by parallel connection of two annular antenna units, the antenna coil units are provided with an opening, the two antenna unit openings are connected to form an intersection point, and when the antenna is used, a human body passes through the two antenna units at the same time.
Preferably, the visual window corresponds to the annular mouth of the annular coil unit.
Preferably, a plate-shaped waist support for supporting a human body is erected on the flexible coil body, and a distance is arranged between the cross section of the support and the placement surface.
Preferably, the two ends of the flexible coil body are provided with connecting mechanisms, the connecting mechanisms comprise connecting ends and fastening ends which are respectively fixed at the two ends of the flexible coil body, and the connecting ends are connected with the fastening ends through lock catches.
Preferably, the connecting end and the fastening end are further provided with a guide convex column and a guide hole, and one side of the guide convex column is provided with an electric connection contact pin.
Preferably, the width of the annular coil is larger than that of the 8-shaped coil unit, five annular coil units are arranged, and five visual windows are formed.
Preferably, the bracket is provided with an arc-shaped plate surface, and a negative pressure vacuum air cushion is arranged on the plate surface of the bracket and is in bonding connection with the plate surface of the bracket.
The beneficial effects of the invention are as follows: the plurality of visual windows increases the operation space of doctors for interventional operations and the like. Meanwhile, the coil is matched with a bracket for supporting the waist, and the bracket supports the body of the patient, so that the coil is not directly pressed by the patient, and the coil can be ensured to rotate freely. The application range of the invention is enlarged, and the invention can be applied to magnetic resonance interventional operation.
Drawings
Fig. 1: the invention is a three-dimensional structure schematic diagram of a use state.
Fig. 2: the flexible coil body of fig. 1 is shown in a schematic view in the unfolded configuration.
Fig. 3: the coil assembly of fig. 2 is a schematic diagram of the unfolding structure in the present invention.
Fig. 4: the coil connecting mechanism is structurally schematic.
Fig. 5: the invention discloses a bracket structure schematic diagram.
Detailed Description
The technical scheme of the invention is specifically described below by combining the embodiment, and the invention discloses a special radio frequency coil for intervention of a vertical field magnetic resonance flexible body, as shown in fig. 1 to 5, which comprises a wide-band flexible coil body 5 wound on the abdomen of a human body, wherein two ends of the flexible coil body 5 are bent and then connected through a lock catch 72.
At least two visual windows are arranged on the flexible coil body 5, and five visual windows 51 are arranged in the embodiment. The flexible coil body 5 is connected with a rigid circuit cover plate 6. The rigid circuit cover plate 6 is provided with a circuit board, and is made of rigid materials in order to ensure that the circuit board is not folded. Two circuit cover plates 6 are arranged at intervals.
Specifically, the flexible coil body 5 includes a flexible housing and a coil assembly disposed in the flexible housing. The flexible coil body 5 increases comfort and, at the same time, better fits against the abdomen of the human body for better imaging.
The coil assembly comprises an 8-shaped coil unit 1 and annular coil units which are partially overlapped with the 8-shaped coil unit 1, wherein adjacent annular coil units are partially overlapped, the width of each annular coil is larger than that of each 8-shaped coil unit, and 5 annular coil units are arranged.
The 8-shaped coil unit is formed by connecting two annular antenna units in parallel, the antenna coil units are provided with an opening, the two antenna unit openings are connected to form an intersection point, and when the antenna is used, a human body passes through the two antenna units at the same time.
As shown in fig. 3, the first loop coil unit 2, the second loop coil unit 3, the third loop coil unit 4, the fourth loop coil unit, and the fifth loop coil unit are respectively. The 8-shaped coil unit is formed by partially overlapping two semi-annular coil units. The structure can obtain better coupling effect without adding redundant decoupling circuits, and a plurality of annular coil units with the same size are evenly distributed around a human body to form a circle, so that signals are uniform, sensitivity and signal-to-noise ratio are high, and imaging quality is good.
Since the flexible housing is wrapped around the coil assembly, the visual window 51 corresponds to the annular mouth of the annular coil unit. In practical applications, the size of the viewing window 51 may be set according to the internal coil pitch or the like. Because some slim patients can exist to the coil and can't be fine support it in place the flexible coil body inboard is provided with detachable gasbag, and during the use, the coil body parcel is in human waist abdomen, and the gasbag is located between human and the coil body, aerifys the size in order to adjust the gasbag to the gasbag, even like this patient's size is less, also can support the coil body well, prevents that the coil from rocking in the use, has strengthened the stability of image. The air cushion can be connected with the flexible shell of the coil body through the bonding buckle, and can also be fixedly connected through other modes. Under the condition of ensuring the precision of the invention, the coil special for body intervention can be widely applied.
The flexible coil body 5 is provided with a plate-shaped waist support 8 for supporting a human body. Since the support is generally used for supporting a human body, the support has an arc-shaped plate surface for better comfort. Meanwhile, the bracket is placed on the sickbed, the coil penetrates through the bracket and is placed between the bracket and the sickbed, so that the patient can lie on the sickbed, the coil is prevented from being compressed, the coil can be drawn left and right relative to the longitudinal axis of the patient body, and the opening on the coil is positioned at the position where the patient needs to be subjected to the interventional operation.
Further considering the comfort level problem of the user, the arc-shaped plate surface of the bracket is provided with a detachable negative pressure vacuum air cushion (not shown in the figure), and when in use, the negative pressure vacuum air cushion is contacted with the waist and the abdomen of the human body. Specifically, the negative pressure vacuum air cushion is connected with the arc-shaped plate surface through the sticking buckle. Of course, the negative-pressure vacuum cushion can also be fixed in other ways.
The size of the negative pressure vacuum air cushion is set according to the size of the surface of the support, and when a patient lies on the support, the negative pressure vacuum air cushion is pumped, so that fillers in the negative pressure vacuum air cushion are mutually extruded. Because the negative pressure vacuum air cushion is filled with plastic particles, when the negative pressure vacuum air cushion is extruded, the negative pressure vacuum air cushion can be formed according to the shape of a patient, so that a female die at the human body part is formed, the comfort level of a user can be improved, meanwhile, the fact that the fixed position of the coil body in use is not easily moved is ensured, and the accuracy of an operation is indirectly improved.
The two ends of the flexible coil body 5 are provided with connecting mechanisms, the connecting mechanisms comprise connecting ends and fastening ends, the connecting ends and the fastening ends are respectively fixed at the two ends of the flexible coil body 5, and the connecting ends and the fastening ends are connected through lock catches 72.
The connecting end and the fastening end are also optionally provided with a guiding convex column 91 and a guiding hole 9, and one side of the guiding convex column 91 is provided with an electric connection contact pin 74. Correspondingly, a pin hole 73 is formed on one side of the guide hole.
After the coil is locked, further securement by the external strap is required to be more proximate to the patient. Specifically, a connection hole 61 is formed in the circuit cover plate, and the connection hole 61 can be bound again by a binding belt.
There are various embodiments of the present invention. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the invention claimed.
Claims (7)
1. Special radio frequency coil is intervened to perpendicular magnetic resonance body portion, its characterized in that: the flexible coil body is connected at the head end and the tail end, at least two visual windows are arranged on the flexible coil body, and a rigid circuit cover plate is connected on the flexible coil body; the flexible coil body comprises a flexible shell and a coil group arranged in the flexible shell, wherein the coil group comprises a 8-shaped coil unit and annular coil units which are partially overlapped with the 8-shaped coil unit, the adjacent annular coil units are partially overlapped, and at least two annular coil units are arranged; the flexible coil body is erected with a platy waist support for supporting a human body, and a distance is arranged between the section of the support and the placing surface; the support has an arc face, be provided with negative pressure vacuum air cushion on the face of support, negative pressure vacuum air cushion with support face bonding connects, uses plastic particle to fill in the negative pressure vacuum air cushion.
2. The vertical field magnetic resonance body intervention dedicated radio frequency coil as set forth in claim 1, wherein: the circuit cover plates are arranged at intervals, the inner side of the flexible coil body is provided with detachable inflatable air bags, and when the inflatable air bags are used, the inflatable air bags are contacted with the waist and abdomen of a human body.
3. The vertical field magnetic resonance body intervention dedicated radio frequency coil as set forth in claim 2, wherein: the circuit cover plate is provided with a connecting hole, the special coil inserted into the body part further comprises a binding band penetrating through the connecting hole, and the air bag is connected with the flexible shell through a sticking buckle.
4. The vertical field magnetic resonance body intervention dedicated radio frequency coil as set forth in claim 1, wherein: the 8-shaped coil unit is formed by connecting two annular antenna units in parallel, the antenna units are provided with an opening, the two antenna unit openings are connected to form an intersection point, and when the antenna is used, a human body passes through the two antenna units at the same time.
5. The vertical field magnetic resonance body intervention dedicated radio frequency coil as set forth in claim 1, wherein: the flexible coil comprises a flexible coil body and is characterized in that connecting mechanisms are arranged at two ends of the flexible coil body, each connecting mechanism comprises a connecting end and a fastening end, the connecting ends and the fastening ends are respectively fixed at two ends of the flexible coil body, and the connecting ends are connected with the fastening ends through lock catches.
6. The vertical field magnetic resonance body intervention dedicated radio frequency coil as set forth in claim 5, wherein: the connecting end and the fastening end are also selectively provided with a guide convex column and a guide hole, and one side of the guide convex column is provided with an electric connection contact pin.
7. The vertical field magnetic resonance body intervention dedicated radio frequency coil as set forth in claim 1, wherein: the width of the annular coil is larger than that of the 8-shaped coil unit, the visual window is equal to the annular opening of the annular coil unit, five annular coil units are arranged, and five visual window openings are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103924.XA CN106725477B (en) | 2016-12-05 | 2016-12-05 | Special radio frequency coil for vertical field magnetic resonance body intervention |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103924.XA CN106725477B (en) | 2016-12-05 | 2016-12-05 | Special radio frequency coil for vertical field magnetic resonance body intervention |
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| CN106725477A CN106725477A (en) | 2017-05-31 |
| CN106725477B true CN106725477B (en) | 2023-11-03 |
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| CN201611103924.XA Active CN106725477B (en) | 2016-12-05 | 2016-12-05 | Special radio frequency coil for vertical field magnetic resonance body intervention |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107811638B (en) * | 2017-11-24 | 2021-05-14 | 上海联影医疗科技股份有限公司 | Magnetic resonance system |
| CN110169772A (en) * | 2019-06-26 | 2019-08-27 | 苏州众志医疗科技有限公司 | A kind of horizontal magnetic resonance intervention special-purpose radio-frequency array coil device and its application method |
| CN114252823A (en) * | 2020-09-23 | 2022-03-29 | 西门子(深圳)磁共振有限公司 | Coil assembly, magnetic resonance imaging system and use method of coil assembly |
| CN117860226B (en) * | 2024-01-12 | 2024-07-09 | 安徽硕金医疗设备有限公司 | Large-caliber short-cavity interventional therapy type magnetic resonance equipment and design method thereof |
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| US5548218A (en) * | 1995-10-19 | 1996-08-20 | North Shore University Hospital Research Corporation | Flexible RF coils for MRI system |
| CN1137229A (en) * | 1993-11-24 | 1996-12-04 | 麦格纳·莱伯公司 | Inflatable magnetic resonance imaging sensing coil device |
| JP2006141444A (en) * | 2004-11-16 | 2006-06-08 | Toshiba Corp | High frequency coil assembly and magnetic resonance imaging apparatus |
| JP2008067733A (en) * | 2006-09-12 | 2008-03-27 | Ge Medical Systems Global Technology Co Llc | Rf coil and magnetic resonance imaging system using it |
| CN101762798A (en) * | 2010-01-05 | 2010-06-30 | 陈武凡 | Radio-frequency coil structure applied to low-magnetic field resonance imaging in thermal-ablation therapy |
| EP2560016A1 (en) * | 2011-08-18 | 2013-02-20 | Agron Lumiani | MRT local coil device for diagnosis and intervention |
| JP2015136447A (en) * | 2014-01-21 | 2015-07-30 | 株式会社日立メディコ | Receiving coil, magnetic resonance imaging apparatus, and cover for receiving coil |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7006860B2 (en) * | 2001-04-12 | 2006-02-28 | Invivo Corporation | Magnetic resonance imaging coil having vest support structure |
| JP5508906B2 (en) * | 2009-04-24 | 2014-06-04 | 株式会社東芝 | Magnetic resonance imaging apparatus and RF coil |
| DE102010033322A1 (en) * | 2010-08-04 | 2012-02-09 | Siemens Aktiengesellschaft | Local coil for magnet resonance tomography system, has antenna elements, where antenna element has connection detachable for formation of opening |
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2016
- 2016-12-05 CN CN201611103924.XA patent/CN106725477B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05245125A (en) * | 1992-03-03 | 1993-09-24 | Hitachi Medical Corp | High frequency receiving coil of magnetic resonance imaging device |
| CN1137229A (en) * | 1993-11-24 | 1996-12-04 | 麦格纳·莱伯公司 | Inflatable magnetic resonance imaging sensing coil device |
| US5548218A (en) * | 1995-10-19 | 1996-08-20 | North Shore University Hospital Research Corporation | Flexible RF coils for MRI system |
| JP2006141444A (en) * | 2004-11-16 | 2006-06-08 | Toshiba Corp | High frequency coil assembly and magnetic resonance imaging apparatus |
| JP2008067733A (en) * | 2006-09-12 | 2008-03-27 | Ge Medical Systems Global Technology Co Llc | Rf coil and magnetic resonance imaging system using it |
| CN101762798A (en) * | 2010-01-05 | 2010-06-30 | 陈武凡 | Radio-frequency coil structure applied to low-magnetic field resonance imaging in thermal-ablation therapy |
| EP2560016A1 (en) * | 2011-08-18 | 2013-02-20 | Agron Lumiani | MRT local coil device for diagnosis and intervention |
| JP2015136447A (en) * | 2014-01-21 | 2015-07-30 | 株式会社日立メディコ | Receiving coil, magnetic resonance imaging apparatus, and cover for receiving coil |
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| CN106725477A (en) | 2017-05-31 |
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