CN116338540A - Magnetic resonance imaging head radio frequency coil device with conformality - Google Patents
Magnetic resonance imaging head radio frequency coil device with conformality Download PDFInfo
- Publication number
- CN116338540A CN116338540A CN202211721660.XA CN202211721660A CN116338540A CN 116338540 A CN116338540 A CN 116338540A CN 202211721660 A CN202211721660 A CN 202211721660A CN 116338540 A CN116338540 A CN 116338540A
- Authority
- CN
- China
- Prior art keywords
- head
- radio frequency
- magnetic resonance
- collet
- resonance imaging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002595 magnetic resonance imaging Methods 0.000 title claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 210000003128 head Anatomy 0.000 description 70
- 210000001508 eye Anatomy 0.000 description 8
- 210000000214 mouth Anatomy 0.000 description 8
- 210000001331 nose Anatomy 0.000 description 8
- 210000001061 forehead Anatomy 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 210000004556 brain Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
Images
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/70—Means for positioning the patient in relation to the detecting, measuring or recording means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/70—Means for positioning the patient in relation to the detecting, measuring or recording means
- A61B5/702—Posture restraints
-
- 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
-
- 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
- G01R33/34084—Constructional details, e.g. resonators, specially adapted to MR implantable coils or coils being geometrically adaptable to the sample, e.g. flexible coils or coils comprising mutually movable parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention relates to the technical field of magnetic resonance, in particular to a magnetic resonance imaging head radio frequency coil device with conformal capability. A magnetic resonance imaging head radio frequency coil device with conformality, characterized in that: the upper part of the collet is sleeved with a head cover, the inside of the collet and the head cover are uniformly provided with a plurality of radio frequency receiving channels of magnetic resonance receiving coils, the radio frequency receiving channels in the head cover are connected with the collet through cables, and the radio frequency receiving channels in the collet are connected with a magnetic resonance system through cables; the bottom support is of a rigid structure, and a groove is formed in the top of the bottom support; the headgear comprises a rigid spherical shell and a flexible mask, and one side of the top of the flexible mask is connected with the rigid spherical shell. Compared with the prior art, the structure is simple, the production and the manufacture are very simple, and the cost is low; because most of the area of the coil is made of flexible structure, the coil can be well attached no matter the size of the head of a human body, and higher image quality can be obtained.
Description
Technical Field
The invention relates to the technical field of magnetic resonance, in particular to a magnetic resonance imaging head radio frequency coil device with conformal capability.
Background
The magnetic resonance imaging is an advanced human body nondestructive imaging technology and is widely applied to diagnosis of diseases of various parts of a human body. The head scanning is an important application field of magnetic resonance imaging scanning, and compared with imaging means such as CT, the magnetic resonance scanning has the advantages of no ionizing radiation, clear imaging, high soft tissue contrast, rich imaging functions, various image sequences and the like.
The magnetic resonance radio frequency coil is an important component of a magnetic resonance imaging system, and the performance of the magnetic resonance radio frequency coil directly determines the quality of magnetic resonance imaging. According to the electromagnetic reciprocity theorem, the closer the radio frequency coil is to the human body, the higher the detection sensitivity is, and the higher the signal-to-noise ratio of an image is, so that it is generally desirable to make the head radio frequency coil smaller and better. However, on the other hand, since the head rf coil is generally of a rigid structure and cannot be deformed, the larger the rf coil is required to be, the better the larger the rf coil is, in view of the large difference in size and shape of the head of a human body. Therefore, generally speaking, the inner diameter of the head portion of the magnetic resonance head radio frequency coil configured by each large magnetic resonance manufacturer along with the system standard is about 23cm, which is usually far greater than the actual size of most human heads, so that the signal-to-noise ratio of head images is not ideal.
In order to solve the problem that the coil is close to the body of a patient as much as possible, many magnetic resonance radio frequency coils are made into a flexible structure, but the flexible coil is usually in a plane structure, so that only the approximately cylindrical human body structures such as knee joints, elbow joints and the like can be wrapped, and for the approximately spherical structure of the head, the flexible coil cannot be well wrapped as patent US8604789B2 because the coil cannot be unfolded into a plane.
Some solutions, such as CN209695187U, divide the head coil into a plurality of relatively movable parts, and move the positions or angles of these movable parts to make them close to the head of the human body, so as to obtain the highest possible image quality. However, these schemes have the disadvantages of complex structure and inconvenient use.
Disclosure of Invention
The invention provides a magnetic resonance imaging head radio frequency coil device with the conformal capability, which overcomes the defects of the prior art, and has the advantages of simple structure, very simple production and manufacture and low cost; because most of the area of the coil is made of flexible structure, the coil can be well attached no matter the size of the head of a human body, and higher image quality can be obtained.
In order to achieve the above purpose, a magnetic resonance imaging head radio frequency coil device with a conformal capability is designed, which comprises a collet and a headgear, and is characterized in that: the upper part of the collet is sleeved with a head cover, the inside of the collet and the head cover are uniformly provided with a plurality of radio frequency receiving channels of magnetic resonance receiving coils, the radio frequency receiving channels in the head cover are connected with the collet through cables, and the radio frequency receiving channels in the collet are connected with a magnetic resonance system through cables; the bottom support is of a rigid structure, and a groove is formed in the top of the bottom support; the headgear comprises a rigid spherical shell and a flexible mask, and one side of the top of the flexible mask is connected with the rigid spherical shell.
The bottom support comprises a head support and a base, wherein the top of the base is connected with the head support, the base and the head support are of an integrated structure, and a groove similar to the head and the neck is formed in the top of the head support.
The rigid spherical shell is an arc-shaped rigid shell structure similar to a 1/4 sphere.
The flexible mask is folded to be in an arch structure, and the flexible mask is unfolded to be in a U-shaped flexible panel structure; the middle part that is located flexible face guard is equipped with eye trompil and nose, mouth trompil respectively.
The outer side of a cable line connected between the collet and the head sleeve is sleeved with a universal joint.
The universal joint is made of a plurality of plastics, and is of a hollow structure.
The hollow cavity between the bottom support and the head cover covers the head and the neck or the head, the neck and the chest.
The upper part of the collet is sleeved with a head cover, the inside of the collet and the head cover are uniformly provided with a plurality of radio frequency receiving channels of magnetic resonance receiving coils, and the radio frequency receiving channels in the head cover and the radio frequency receiving channels in the collet are respectively connected with a magnetic resonance system through a cable; the bottom support is of a rigid structure, and a groove is formed in the top of the bottom support; the headgear comprises a rigid spherical shell and a flexible mask, wherein one side of the top of the flexible mask is connected with the rigid spherical shell.
Compared with the prior art, the invention provides the magnetic resonance imaging head radio frequency coil device with the conformal capability, which has the advantages of simple structure, very simple production and manufacture and low cost; because most of the area of the coil is made of flexible structure, the coil can be well attached no matter the size of the head of a human body, and higher image quality can be obtained.
The coil of the flexible mask is of a flexible structure, so that the comfort of a patient is better; when in use, a patient lies on the head rest of the lower half part, and an operation technician only needs to fasten the upper half part to the head and the face of the patient, thereby being very convenient; the reliability is better because of no connector; the flexible part occupies a large proportion of the whole coil structure, so the structure is light and convenient for carrying.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is an exploded view of the structure of the present invention.
FIG. 3 is a schematic view of the flexible mask of the present invention in a collapsed state.
Fig. 4 is a schematic view of the flexible mask of the present invention in its expanded state.
Fig. 5 and 6 are schematic views of the structure of the present invention in use.
Referring to fig. 1 to 4,1 is a base, 1-1 is a groove, 1-2 is a head support, 1-3 is a base, 2 is a head cover, 2-1 is a rigid spherical shell, 2-2 is a flexible mask, 2-3 is an eye opening, 2-4 is a nose and mouth opening, and 3 is a universal joint.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, a head cover 2 is sleeved on the upper part of the collet 1, and a plurality of radio frequency receiving channels of magnetic resonance receiving coils are uniformly distributed in the collet 1 and the head cover 2, the radio frequency receiving channels in the head cover 2 are connected with the collet 1 through cables, and the radio frequency receiving channels in the collet 1 are connected with a magnetic resonance system through cables; the bottom support 1 is of a rigid structure, and a groove 1-1 is formed in the top of the bottom support 1; the headgear 2 comprises a rigid spherical shell and a flexible mask, and one side of the top of the flexible mask 2-2 is connected with the rigid spherical shell 2-1.
The base 1 comprises a head support and a base, the top of the base 1-3 is connected with the head support 1-2, the base 1-3 and the head support 1-2 are of an integrated structure, and a groove 1-1 which is similar to the shape of a head and is connected with a neck is formed in the top of the head support 1-2.
The rigid spherical shell 2-1 is an arc-shaped rigid shell structure similar to a 1/4 sphere.
The flexible mask 2-2 is folded to form an arch structure, and the flexible mask 2-2 is unfolded to form a U-shaped flexible panel structure; the middle part of the flexible mask 2-2 is respectively provided with eye openings 2-3 and nose and mouth openings 2-4.
The outer side of a cable line connected between the collet 1 and the head sleeve 2 is sleeved with a universal joint 3.
The universal joint 3 is made of several pieces of plastic, and the universal joint 3 is of a hollow structure.
The hollow cavity between the collet 1 and the headgear 2 encloses the head and neck or the head, neck and chest.
The structure of the invention also has another connection mode: the upper part of the bottom support 1 is sleeved with a head cover 2, a plurality of radio frequency receiving channels of magnetic resonance receiving coils are uniformly distributed in the bottom support 1 and the head cover 2, and the radio frequency receiving channels in the head cover 2 and the radio frequency receiving channels in the bottom support 1 are respectively connected with a magnetic resonance system through a cable; the bottom support 1 is of a rigid structure, and a groove 1-1 is formed in the top of the bottom support 1; the headgear 2 comprises a rigid spherical shell and a flexible mask, and one side of the top of the flexible mask 2-2 is connected with the rigid spherical shell 2-1.
The head radio frequency coil consists of an upper part and a lower part, wherein the lower part is an immovable base 1, the base 1 can be divided into two parts, namely a head support 1-2 part and a base 1-3 part, the head support 1-2 is in a concave shape and can support the head and neck of a human body, the head support 1-2 is obviously higher than the base 1-3 part, and the base 1-3 part is contacted with a magnetic resonance sickbed.
The upper half is a movable part and comprises a rigid spherical shell 2-1 and a flexible mask 2-2, and the rigid spherical shell 2-1 and the flexible mask 2-2 are connected into a whole during use. The rigid spherical shell 2-1 is a rigid structure similar to the shape of a 1/4 spherical shell, and the rigid spherical shell 2-1 is wrapped on the forehead of a human body; the flexible mask 2-2 is of a flexible structure, and the flexible mask 2-2 wraps the head top part and the whole face of the human body, including left side face part and left side ear part, and the front face part includes eyes, nose and mouth part, right side face part and right side ear part.
The head support 1-2 part of the bottom support 1, the rigid spherical shell 2-1 and the flexible mask 2-2 are internally and uniformly provided with a plurality of channels or units of the magnetic resonance radio frequency coil. The flexible mask 2-2 has a flexible structure, so that the radio frequency unit circuit inside the flexible mask must be made of a flexible circuit, and the base 1 and the rigid spherical shell 2-1 have a rigid structure, so that the radio frequency unit circuit inside the flexible mask can be made of a rigid circuit or a flexible circuit. It is noted that the flexible channel circuitry inside the flexible mask 2-2 needs to avoid openings in the eye position and in the nose and mouth position.
The flexible mask 2-2 of the movable portion is flexible and may be deployed in a single plane, as shown in fig. 4 after deployment. When in production, the whole planar flexible circuit is packaged in a flexible planar sheath by using hot pressing or foaming and other processes after the planar flexible circuit is manufactured and debugged. The manufacturing and packaging process of the planar flexible circuit is a conventional process for manufacturing the flexible coil at present, so that the planar flexible circuit is very mature, and the design and the production are very simple and convenient.
The upper part of the rigid ball shell 2-1 is composed of an inner container and a shell, and a circuit which is fixedly attached between the inner container and the shell.
After the flexible mask 2-2 is manufactured, the left and right directions are bent with the head and foot directions as axes, and then the upper half is bent, so that the left and right flexible connecting edges are connected and fixed together, and the circuit parts to be connected are connected and fixed together, as shown in fig. 3. And then the component is installed and fixed on the liner of the rigid spherical shell 2-1, and after the related circuits are connected, the outer shell of the rigid spherical shell 2-1 is buckled with the flexible mask 2-2 and the rigid spherical shell 2-1 into a whole along the soft and hard cross line shown in fig. 1.
When the coil is used, as shown in fig. 5 and 6, a human body is laid on a sickbed, the head is placed on the head support 1-2 of the bottom support 1, the movable part is buckled on the forehead and the face of the human body, and eyes, nose and oral cavity parts are exposed. The lower edge of the flexible mask 2-2 is wrapped outside the head rest 1-2, and the upper half part can have a large free adjustment range along the direction of the human body AP because the height of the head rest 1-2 is significantly higher than that of the base part. If the human brain is small, the highly rigid spherical shell 2-1 and the flexible mask 2-2 of the whole movable part can be lowered down, so that the movable part is ensured to be closely attached to the forehead and the face of the human body all the time along the AP direction. If the human brain is large, the movable part of the rigid spherical shell 2-1 and the flexible mask 2-2 can be lifted upwards. Meanwhile, since the flexible mask 2-2 of the movable part is made of a flexible circuit and a flexible package, it occupies most of the whole movable part, so that the distance between the movable part and the left and right sides of the human face can be easily adjusted to be closely attached to the left and right sides of the human face. Meanwhile, the position of the movable part of the coil along the FH direction is regulated, so that the head top part of the movable part can be ensured to be clung to the forehead and the top of the head of a human body. While at the same time the lower part of the head lies in the head rest 1-2 itself, closely combined with the head rest 1-2. Therefore, the radio frequency coil with the structure can tightly wrap the forehead part, the top part and the whole face including the left side face part, the left side ear part, the front face part including the eyes, the nose, the mouth and the like of the human body inside the coil, thereby remarkably improving the signal-to-noise ratio and the image quality of the coil, obtaining great coil applicability and being suitable for almost all patients.
The movable upper half of the coil may be connected to the lower half of the coil using a flexible cable, and then connected to the magnetic resonance system together with the lower half via a cable; the movable upper half part of the coil can also be directly connected to the magnetic resonance system through an independent flexible cable, and the lower half part of the coil is also directly connected to the magnetic resonance system through another cable; when the flexible mask is used, the flexible mask 2-2 at the upper half part has light weight, so that the whole coil can be directly placed on the head of a human body and then is appropriately fixed by means of a binding belt and the like. The upper half part can also be fixed on a lifting mechanical structure, and the position of the upper half part relative to the head of the human body can be adjusted.
The present embodiment also allows the upper and lower coil halves to be secured and connected using a hollow plastic gimbal 3. The universal joint 3 is internally threaded through coaxial and power lines, control lines, etc. for transmitting the rf signals of the upper half, detuning/tuning the voltage and powering the preamplifier. Meanwhile, the universal joint 3 has a self-shaping function, and the plastic universal joint can also support and fix the upper half part of the coil because the upper half part of the coil is of a flexible structure and the whole weight is very light. Before placing a patient, the upper half part of the coil is lifted, the head of the patient is laid on the lower half part of the coil, and then the upper half part of the coil is buckled on the face of the patient, and the patient needs to pay attention to the eyes, the nose, the mouth and the like. After loosening the hands, the upper part of the coil can be fixed at the just-placed position and cannot move due to the supporting and self-setting functions of the universal joint.
Claims (8)
1. The utility model provides a magnetic resonance imaging head radio frequency coil device with conformality, includes collet, headgear, its characterized in that: the upper part of the collet (1) is sleeved with a head sleeve (2), and a plurality of radio frequency receiving channels of magnetic resonance receiving coils are uniformly distributed in the collet (1) and the head sleeve (2), the radio frequency receiving channels in the head sleeve (2) are connected with the collet (1) through cables, and the radio frequency receiving channels in the collet (1) are connected with a magnetic resonance system through cables; the bottom support (1) is of a rigid structure, and a groove (1-1) is formed in the top of the bottom support (1); the headgear (2) comprises a rigid spherical shell and a flexible mask, and one side of the top of the flexible mask (2-2) is connected with the rigid spherical shell (2-1).
2. A conformal magnetic resonance imaging head radio frequency coil apparatus as set forth in claim 1, wherein: the base support (1) comprises a head support and a base, wherein the top of the base (1-3) is connected with the head support (1-2), the base (1-3) and the head support (1-2) are of an integrated structure, and a groove (1-1) similar to the shape of a head and connected with a neck is formed in the top of the head support (1-2).
3. A conformal magnetic resonance imaging head radio frequency coil apparatus as set forth in claim 1, wherein: the rigid spherical shell (2-1) is an arc-shaped rigid shell structure similar to a 1/4 sphere.
4. A conformal magnetic resonance imaging head radio frequency coil apparatus as set forth in claim 1, wherein: the flexible mask (2-2) is folded to be in an arch structure, and the flexible mask (2-2) is unfolded to be in a U-shaped flexible panel structure; the middle part of the flexible mask (2-2) is respectively provided with eye openings (2-3) and nose and mouth openings (2-4).
5. A conformal magnetic resonance imaging head radio frequency coil apparatus as set forth in claim 1, wherein: the outer side of a cable line connected between the collet (1) and the head sleeve (2) is sleeved with a universal joint (3).
6. A conformal magnetic resonance imaging head radio frequency coil apparatus as set forth in claim 5, wherein: the universal joint (3) is made of a plurality of plastics, and the universal joint (3) is of a hollow structure.
7. A conformal magnetic resonance imaging head radio frequency coil apparatus as set forth in claim 1, wherein: the hollow cavity between the bottom support (1) and the head cover (2) is used for covering the head and the neck or the head, the neck and the chest.
8. The utility model provides a magnetic resonance imaging head radio frequency coil device with conformality, includes collet, headgear, its characterized in that: the upper part of the collet (1) is sleeved with a head sleeve (2), and a plurality of radio frequency receiving channels of magnetic resonance receiving coils are uniformly distributed in the collet (1) and the head sleeve (2), and the radio frequency receiving channels in the head sleeve (2) and the radio frequency receiving channels in the collet (1) are respectively connected with a magnetic resonance system through a cable; the bottom support (1) is of a rigid structure, and a groove (1-1) is formed in the top of the bottom support (1); the headgear (2) comprises a rigid spherical shell and a flexible mask, and one side of the top of the flexible mask (2-2) is connected with the rigid spherical shell (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211721660.XA CN116338540A (en) | 2022-12-30 | 2022-12-30 | Magnetic resonance imaging head radio frequency coil device with conformality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211721660.XA CN116338540A (en) | 2022-12-30 | 2022-12-30 | Magnetic resonance imaging head radio frequency coil device with conformality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116338540A true CN116338540A (en) | 2023-06-27 |
Family
ID=86875397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211721660.XA Pending CN116338540A (en) | 2022-12-30 | 2022-12-30 | Magnetic resonance imaging head radio frequency coil device with conformality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116338540A (en) |
-
2022
- 2022-12-30 CN CN202211721660.XA patent/CN116338540A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7526330B1 (en) | Magnetic resonance scanning apparatus | |
| US20230149240A1 (en) | Headset system | |
| US5365928A (en) | Endorectal probe with planar moveable MRI coil | |
| JP3532446B2 (en) | MRI body probe and MRI apparatus | |
| US5388580A (en) | Head holder for magnetic resonance imaging/spectroscopy system | |
| US8952694B2 (en) | Magnetic resonance coil device | |
| JPH02134133A (en) | Flexible surface coil for being used in nuclear magnetic resonance imaging method | |
| JPH078468A (en) | Mri image forming and spectroscopic probe | |
| EP2717770A2 (en) | Supine breast mri | |
| US20160349336A1 (en) | Head coil and magnetic resonance imaging apparatus employing the same | |
| US5617027A (en) | Local antenna for nuclear magnetic resonance diagnostics | |
| JP7166187B2 (en) | High frequency coil device and magnetic resonance imaging device provided with the same | |
| CN219456457U (en) | Magnetic resonance imaging head radio frequency coil device with conformality | |
| US20160349337A1 (en) | Radio frequency surface coil and magnetic resonance imaging system including the same | |
| CN108828478A (en) | Head-neck-chest joint imaging coil block | |
| CN116338540A (en) | Magnetic resonance imaging head radio frequency coil device with conformality | |
| CN110895319A (en) | Adaptable magnetic resonance local coil | |
| EP0437049A2 (en) | Antennae for high-resolution magnetic resonance imaging | |
| CN110301916B (en) | Magnetic resonance imaging coil device for guiding focused ultrasound to diagnose and treat encephalopathy | |
| CN213721963U (en) | Magnetic resonance head and neck artery plaque radio frequency imaging coil | |
| CN212679069U (en) | Laparoscope with blood vessel imaging function | |
| US11315440B2 (en) | Respiratory gating phantom device | |
| CN217548061U (en) | Quick positioning auxiliary fixing device suitable for head related examination of PET/MRI (positron emission tomography/magnetic resonance imaging) equipment | |
| CN212301835U (en) | Helmet type primate magnetic resonance experiment radio frequency coil device who facilitates use | |
| CN212275948U (en) | Helmet type primate radio frequency coil for multi-mode magnetic resonance imaging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |