CN111123181A - Head and neck radio frequency coil device, scanning bed and magnetic resonance equipment - Google Patents
Head and neck radio frequency coil device, scanning bed and magnetic resonance equipment Download PDFInfo
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- CN111123181A CN111123181A CN202010067747.4A CN202010067747A CN111123181A CN 111123181 A CN111123181 A CN 111123181A CN 202010067747 A CN202010067747 A CN 202010067747A CN 111123181 A CN111123181 A CN 111123181A
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- 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
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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
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- 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
- G01R33/288—Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room
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- 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
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3642—Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
- G01R33/365—Decoupling of multiple RF coils wherein the multiple RF coils have the same function in MR, e.g. decoupling of a receive coil from another receive coil in a receive coil array, decoupling of a transmission coil from another transmission coil in a transmission coil array
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Abstract
The utility model relates to the field of medical equipment, specifically provide a neck radio frequency coil device, scanning bed and magnetic resonance equipment. The head and neck radio frequency coil device is used for magnetic resonance equipment and comprises a first shell, a second shell, a first coil array and a second coil array, wherein the first shell and the second shell are detachably connected with each other; the first wiring terminal of the first coil array is fixedly arranged on the first shell, the second wiring terminal of the second coil array is fixedly arranged on the second shell, and when the first shell and the second shell are detachably connected, the first wiring terminal and the second wiring terminal are correspondingly detachably and electrically connected. The head and neck radio frequency coil device provided by the disclosure has no external cable, so that the electromagnetic interference of the cable is eliminated, the structure of the device is simplified, and the operation is convenient.
Description
Technical Field
The disclosure relates to the field of medical equipment, in particular to a head and neck radio frequency coil device, a scanning bed and magnetic resonance equipment.
Background
Magnetic Resonance Imaging (MRI) is one of the main Imaging methods in modern medical Imaging as a multi-parameter, multi-contrast Imaging technique. The basic working principle of magnetic resonance imaging is to excite hydrogen protons in a human body by using a magnetic resonance phenomenon and radio frequency excitation, perform position encoding by using a gradient field, receive electromagnetic signals with position information by using a receiving coil, and finally reconstruct image information, namely a magnetic resonance image by using Fourier transform.
The head and neck coil assembly is one of the most important parts in a magnetic resonance imaging system and is used for receiving nuclear magnetic resonance signals from the head and the neck of a human body. The receiving coil comprises a coil body made of a conductive material, and an inductor and a capacitor which are connected to the coil body, and under the condition that the shape and the size of the coil are fixed, the more the number of the coil array units is, the closer the coil units are to the human tissue, the better the quality of the acquired magnetic resonance information is.
Therefore, in order to improve the imaging effect in the related art, the head and neck coil assembly is generally divided into a plurality of components, such as a base, a mask, a neck coil and the like, the base is fixedly mounted on the bed body, the mask and the base are detachably mounted, and the neck coil is connected to the base through a flexible structure. The structure has the defects that the head and neck coil assembly is divided into three parts, and the radio frequency coil of each part needs to be externally connected with a cable, so that the structure of the whole head and neck coil is complex and the use is inconvenient. More importantly, in high-frequency radio frequency, the external cable can generate induced current in a radio frequency field, on one hand, the induced current can influence a magnetic resonance magnetic field, on the other hand, the risk that the external cable contacts a human body is increased, and therefore the human body is injured.
Disclosure of Invention
In order to solve the technical problems of complex structure and low safety of the head and neck coil, the invention provides a head and neck radio frequency coil device, a scanning bed and magnetic resonance equipment.
In a first aspect, the present disclosure provides a head and neck radio frequency coil apparatus for a magnetic resonance device,
the head and neck part accommodating device comprises a first shell, a second shell, a first coil array and a second coil array, wherein the first shell and the second shell are detachably connected, the first coil array is arranged in the first shell, the second coil array is arranged in the second shell, the first shell and the second shell are connected to form an accommodating cavity for accommodating the head and neck part, and the inner wall of the accommodating cavity is matched with the shape of the head and neck part;
first binding post of first coil array set firmly in on the first casing, second binding post of second coil array set firmly in on the second casing, first casing with when the connection can be dismantled to the second casing, first binding post with electric connection can be dismantled in the correspondence of second binding post.
In some embodiments, the first housing bottom portion is adapted to be fixedly disposed on the bed, the upper portion is adapted to be detachably connected to the second housing, the first housing includes a first head shell portion and a first neck shell portion integrally connected, and the first coil array is disposed inside the first head shell portion and the first neck shell portion.
In some embodiments, the first housing and the second housing are detachably connected by a locking mechanism, and the locking mechanism includes a clamping structure and a positioning structure respectively disposed at two opposite ends;
the clamping structure comprises a buckle and a clamping groove which are mutually clamped and connected, the buckle is arranged on one of the first shell and the second shell, and the clamping groove is correspondingly arranged on the other of the first shell and the second shell;
the positioning structure comprises a positioning groove and a positioning pin which are matched with each other, the positioning groove is arranged on one of the first shell and the second shell, and the positioning pin is correspondingly and fixedly arranged on the other of the first shell and the second shell;
when the buckle and the clamping groove are clamped and connected, the positioning pin is in inserting fit with the positioning groove.
In some embodiments, the locking mechanism further comprises a sliding structure, the sliding structure comprises a sliding groove and a protrusion, the sliding groove and the protrusion are slidably matched with each other, the sliding groove is arranged on one of the first shell and the second shell, and the protrusion is arranged on the other of the first shell and the second shell;
when the first shell and the second shell are connected, the protrusions slide in the sliding grooves, so that the positioning pins are in plug-in fit with the positioning grooves.
In some embodiments, the first connection terminal is disposed on a first end surface perpendicular to the sliding direction, the second connection terminal is disposed on a second end surface perpendicular to the sliding direction, and when the buckle is engaged with the slot, the first connection terminal is electrically connected to the second connection terminal.
In some embodiments, the second housing includes a second head shell portion and a second neck shell portion integrally connected, and the second coil array is disposed inside the second head shell portion and the second neck shell portion.
In some embodiments, the first array of coils comprises a first array of head coils located in the first head portion, and a first array of neck coils located in the first neck portion;
in a z-axis direction of the magnetic resonance apparatus, the first head coil array includes two rows of 8 coil units in total, and the first neck coil array includes two rows of 6 coil units in total.
In some embodiments, the second coil array comprises a second head coil array located at the second head shell portion, and a second neck coil array located at the second neck shell portion;
the second head coil array comprises two rows of 8 coil units and the second neck coil array comprises one row of 2 coil units in the z-axis direction of the magnetic resonance device.
In some embodiments, the head and neck rf coil device further includes:
the upper portion of the second shell is provided with a viewing port penetrating through the shell, and the reflective component is detachably arranged above the viewing port of the second shell.
In a second aspect, the present disclosure provides a scanning bed adapted for use in a magnetic resonance apparatus, comprising:
a bed body; and
according to the head and neck rf coil device in any embodiment of the first aspect, the first housing is connected to the bed.
In a third aspect, the present disclosure provides a magnetic resonance apparatus comprising a head and neck radio frequency coil device according to any one of the embodiments of the first aspect.
The head and neck radio frequency coil device provided in the embodiment of the present disclosure is suitable for a magnetic resonance device, and includes a first housing and a second housing which are detachably connected, and a first coil array and a second coil array which are respectively arranged in the two housings, wherein the first housing and the second housing are connected to form a holding cavity of the head and neck, the inner wall of the holding cavity is adapted to the shape of the head and neck of a human body, and the detachable connection housing is convenient for use when detecting the head of a user. First binding post of first coil array sets firmly on first casing, the second binding post of second coil array sets firmly on the second casing, when first casing and second casing can be dismantled and connect, electric connection can be dismantled with second binding post correspondence to first binding post, thereby make first coil array and second coil array electrical property intercommunication, need not external cable, the device structure is greatly simplified, and is convenient for use, and the interference of cable to magnetic field has been reduced to a certain extent simultaneously, and because do not expose at the outside cable of machine, the risk that the cable caused the injury to the human body has been avoided.
According to the head and neck radio frequency coil device provided in the embodiment of the present disclosure, the bottom of the first casing is used for being mounted on a scanning bed body, the upper portion of the first casing is detachably connected to the second casing, the first casing includes a first head casing portion and a first neck casing portion which are integrally connected, and the first coil array is disposed inside the first head casing portion and the first neck casing portion. Therefore, when the neck of the user is detected, the coil is not required to be fixed by using a binding band, and the structure and the use operation of the device are greatly simplified.
According to the head and neck radio frequency coil device provided in the embodiment of the disclosure, the first wiring terminal is arranged on the first end face perpendicular to the sliding direction of the sliding structure, and the second wiring terminal is arranged on the second end face perpendicular to the sliding direction, so that when the buckle and the clamping groove are clamped and connected, the first wiring terminal and the second wiring terminal are electrically connected, a cable does not need to be connected again, and the operation is convenient.
The scanning bed and the magnetic resonance device provided in the embodiments of the present disclosure include the head and neck radio frequency coil device described in any of the above embodiments, and therefore have all the above beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an exploded view of a head and neck rf coil assembly according to some embodiments of the present disclosure.
Fig. 2 is a close-up view of a head and neck radio frequency coil assembly in some embodiments of the present disclosure.
FIG. 3 is a schematic view of a light reflecting assembly according to some embodiments of the present disclosure.
Fig. 4 is an assembled block diagram of a head and neck rf coil assembly according to some embodiments of the present disclosure.
Fig. 5 is a schematic diagram of a second array of coils in some embodiments of the present disclosure.
Fig. 6 is a schematic structural diagram of a first coil array in some embodiments of the present disclosure.
Description of reference numerals:
100-a first housing; 110-a first header portion; 120-a first neck shell portion; 200-a second housing; 210-a second head housing portion; 211-viewing port; 220-a second neck shell portion; 311-positioning pins; 312-a positioning groove; 321-a bump; 322-a chute; 331-a second connection terminal; 340-a snap-fit structure; 400-a light reflecting component; 510-a first coil array; 511-a first head coil array; 512-a first neck coil array; 520-a second coil array; 521-a second head coil array; 522-second neck coil array.
Detailed Description
The technical solutions of the present disclosure will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure. In addition, technical features involved in different embodiments of the present disclosure described below may be combined with each other as long as they do not conflict with each other.
The head and neck radio frequency coil device provided by the disclosure can be used for magnetic resonance equipment as a human head and neck coil component, so as to perform magnetic resonance imaging on the head of a human body.
It should be noted that, in some existing head and neck separation coil assemblies, in order to improve imaging quality, the head coil and the neck coil are set to be of a separated structure, the neck coil adopts a flexible structure, and the head coil is divided into an upper part and a lower part which are detachably connected. When the magnetic resonance imaging of the head of the human body is carried out, the three parts are assembled through a mechanical structure, and the coils in the three parts are communicated through an additional external cable, so that the magnetic resonance information of the head and the neck is acquired.
Therefore, the existing neck coil assembly not only needs to assemble mechanical parts of the assembly, but also needs to connect cables of each part when in use, so that inconvenience is brought to use, and the overall equipment is complex and not beautiful due to the large number of cables. More importantly, in the magnetic resonance high-frequency radio frequency, the current in the cable can interfere the originally uniform magnetic field, and as the length of the cable is increased, the electromagnetic interference of the cable is also increased correspondingly, so that the imaging result is influenced. Moreover, the temperature of the cable is high due to the large induced current in the cable, the cable exposed outside is easily hurt to the human body, and an additional structure is required to be designed to isolate the cable from the human body. Therefore, more hardware structures are added, the equipment structure is more complicated, and the hardware cost is correspondingly increased.
In order to solve the above-mentioned drawbacks of the prior art, some embodiments of the present disclosure provide a head and neck radio frequency coil device for a magnetic resonance apparatus, including: the first shell and the second shell that connect can dismantle each other to and be located the first coil array and the second coil array in two shells respectively.
First casing and second casing are upper and lower disconnect-type detachable construction generally, and both assemble and form the holding chamber that supplies human neck to place, and the inside and the human neck shape looks adaptation in holding chamber. In one exemplary implementation, the first shell is a shell that fits the shape of the human's posterior brain and neck, and the second shell is a mask that fits the shape of the human's face and neck.
First coil array and second coil array are located inside two casings, because two casings are independent detachable construction, therefore each coil array all has independent binding post. The first wiring terminal of the first coil array is fixedly arranged on the first shell, the second wiring terminal of the second coil array is fixedly arranged on the second shell, and when the first shell and the second shell are detachably connected, the first wiring terminal and the second wiring terminal are correspondingly detachably and electrically connected. When the mechanical structure is assembled, the first connecting terminal and the second connecting terminal can be electrically connected simultaneously.
As can be seen from the above, the head and neck radio frequency coil device in the embodiment of the present disclosure is convenient for use of the device by providing the first housing and the second housing which are detachably connected. And first binding post and second binding post set firmly on the casing, do not have external cable, reduce the interference of cable induced-current to magnetic field to a certain extent, improve magnetic resonance imaging quality to reduce external cable and simplify the device structure. First binding post and second binding post can dismantle the connection at two casings in, correspond and to dismantle electric connection to need not to carry out electric assembly after mechanical assembly, the simplified operation improves and uses the convenience.
Fig. 1-6 illustrate one embodiment of a neck radio frequency coil apparatus of the present disclosure.
In this embodiment, the head and neck rf coil device includes a first housing 100 and a second housing 200, the first housing 100 and the second housing 200 are detachably connected, an accommodating cavity 800 for accommodating the head and neck of the human body is formed inside the first housing 100 and the second housing 200 after the first housing and the second housing are connected, and the inner wall of the accommodating cavity 800 is adapted to the shape of the head and neck of the human body.
The first housing 100 is adapted to be fixedly mounted on a scanning bed, such as a magnetic resonance apparatus, as a base for a head and neck arrangement, such that the head and neck is located inside the first housing 100 when a human body is lying on the scanning bed. The first coil array 510 for acquiring magnetic resonance signals is arranged inside the first casing 100, and the terminals of the first coil array 510 can be connected to the power supply terminal of the scanning bed or the magnetic resonance device through the bottom connector, so that the first casing 100 can be used as a single radio frequency coil, that is, without being matched with the second casing 200, the first casing 100 is used as a radio frequency coil device for the hindbrain and the hind neck to perform magnetic resonance imaging.
In the present embodiment, the first case 100 is divided into a first head shell portion 110 corresponding to a human posterior brain, and a first neck shell portion 120 corresponding to a human posterior neck. The first coil array 510 is also divided into a first head coil array 511 disposed within the first head section 110, and a first neck coil array 512 disposed within the first neck section 120. As shown in fig. 1, the first head part 110 and the first neck shell part 120 are integrally and rigidly connected, so that when a user performs neck detection, the neck coil does not need to be fixed by using an auxiliary structure, and the device structure and the operation are greatly simplified.
The second housing 200 is divided into a second head housing part 210 corresponding to the anterior brain of the human body and a second neck housing part 220 corresponding to the anterior neck of the human body. The second coil array 520 is also divided into a second head coil array 521 disposed within the second head housing part 210, and a second neck coil array 522 disposed within the second neck housing part 220. As shown in FIG. 1, the second head shell portion 210 and the second neck shell portion 220 are rigidly connected in an integrated manner, and the second neck shell portion 220 and the first neck shell portion 120 are matched to perform magnetic resonance detection on the neck of a human body, so that a neck coil assembly does not need to be separately arranged, the device structure is simplified, and the magnetic resonance imaging operation and use are facilitated.
In this embodiment, the first housing 100 and the second housing 200 are detachably connected by a locking mechanism, and the locking mechanism may include a snap structure 340 and a positioning structure respectively disposed at two opposite sections. For convenience of description, the scanning direction of the magnetic resonance apparatus (i.e. the length direction of the scanning bed) is defined as the z direction, and the human body lies. In the present embodiment, the detachable connection manner of the first casing 100 and the second casing 200 is a sliding detachable connection along the z direction.
Specifically, the lock mechanism is provided with an engaging structure 340 and a positioning structure at both ends in the z direction, respectively. For example, as shown in fig. 4, a snap structure 340 is provided at an end near the top of the head of the human body to facilitate detachment by the operator, and a positioning structure is provided at an end near the neck of the human body. As shown in fig. 1, the positioning structure includes positioning slots 312 disposed on two symmetrical sides of the first casing 100 and opened toward the z-direction, and positioning pins 311 disposed on two symmetrical sides of the second casing 200 and protruding along the z-direction. The positioning pin 311 and the positioning groove 312 are inserted and matched with each other, and when the first casing 100 is connected with the second casing 200, the positioning pin 311 is inserted and matched with the positioning groove 312, so as to limit the second casing 200. When the first casing 100 is detached from the second casing 200, the positioning pin 311 is disengaged from the positioning groove 312, thereby canceling the stopper.
As shown in fig. 4, in the present embodiment, the engaging structure 340 includes a buckle disposed on the second housing 200 and a slot (not shown) correspondingly disposed on the first housing 100, and the buckle and the slot are engaged with each other. The engaging connection structure may be an existing structure in the related art, such as a pressing type engaging structure, a quick-release engaging structure, etc., which can be realized by those skilled in the art without any doubt, and the disclosure is not repeated herein.
When second casing 200 assembles, second casing 200 slides along the z direction on first casing 100, when locating pin 311 pegs graft in constant head tank 312, buckle and draw-in groove block are connected simultaneously to realize the fixed mounting of second casing 200, block structure 340 and location structure cooperation carry on spacingly to second casing 200. When the second housing 200 is detached, the positioning pin 3100 is disengaged from the positioning groove 312 by, for example, releasing the snap connection between the snap and the slot by pressing, and sliding the second housing 200 in the opposite direction, thereby detaching the second housing 200.
In some embodiments, to further facilitate the sliding installation of the second housing 200, the detachable structure further comprises a sliding structure. Referring to fig. 1, the sliding structure includes a sliding groove 322 provided on the first housing 100, and a protrusion 321 provided at a corresponding position of the second housing 200. To ensure the sliding detachable connection, the sliding stroke of the protrusion 321 in the sliding slot 322 should be greater than or equal to the sliding stroke of the positioning pin 311 in the positioning slot 312, i.e. to ensure that the positioning pin 311 is completely separated from the positioning slot 312 when the protrusion 321 slides to the limit position near one side of the head of the human body.
When the second housing 200 is assembled, the protrusion 321 on the second housing 200 is correspondingly installed in the sliding groove 322, and then the second housing 200 is slid, so that the protrusion 321 slides in the sliding groove 322, when the protrusion slides to the limit position close to one side of the neck, the positioning pin 311 is in insertion fit with the positioning groove 312, and meanwhile, the buckle and the clamping groove are in clamping connection, thereby completing the assembly of the second housing 200. The process of detaching the second housing 200 is the reverse, and will not be described herein. In the present embodiment, the sliding fit between the protrusion 321 and the sliding groove 322 provides a guiding function for the sliding assembly, thereby facilitating the assembly operation.
In some embodiments, the engaging structure, the positioning structure, and the sliding structure may be symmetrically disposed on two sides of the coil device, so that the second housing 200 is more stably and conveniently assembled. Of course, it will be understood by those skilled in the art that the above-described structure provided on one side of the device can also achieve the above-described effects, and the present disclosure is not limited thereto.
It should be noted that the above-mentioned buckle and the clamping groove, the protrusion 321 and the sliding groove 322, and the positioning pin 311 and the positioning groove 312 are only required to be respectively and correspondingly disposed on the two shells, and the above-mentioned embodiment is only an example, and those skilled in the art can change the structures according to the above-mentioned embodiment, for example, the positioning pin 311 is disposed on the first shell 100, and the positioning groove 312 is disposed at the corresponding position of the second shell 200. The present disclosure is not so limited.
As shown in fig. 1 and 2, in the present embodiment, the first connection terminal and the second connection terminal have a plug-in type electrical connection structure. A first connection terminal (not shown) of the first coil array 510 is fixedly disposed on a first end surface of the first casing 100 perpendicular to the z-direction, and a second connection terminal 331 of the second coil array 520 is fixedly disposed on a second end surface of the second casing 200 perpendicular to the z-direction. As shown in fig. 2, the second connection terminal 331 is a plug-in type electrode structure, and the corresponding first connection terminal is a plug-in type electrode structure, so that after the first connection terminal is connected with the second connection terminal 331 in a plug-in manner, the first coil array 510 is electrically connected with the second coil array 520.
As can be seen from fig. 2, the second connection terminal 331 and the first connection terminal only have the electrode terminal fixed on the housing, and do not have an external cable, so that the electromagnetic interference caused by the cable can be reduced to a certain extent, the imaging effect is improved, an electromagnetic shielding device is not required, the hardware cost is reduced, and the structure is simplified. And the second connection terminal 331 is inserted and matched with the first connection terminal in the z direction, so that when the second housing 200 is assembled in a sliding manner and the second housing 200 is assembled with the mechanical part of the first housing 100, the first connection terminal and the second connection terminal 331 are electrically connected at the same time, and the electrical parts of the first housing and the second housing do not need to be connected separately, thereby greatly simplifying the operation complexity.
In some embodiments, in order to make the measured person view the external environment and thus reduce the oppressive feeling to the measured person, the coil device of the present disclosure further includes a light reflecting component.
Specifically, as shown in fig. 3 and 4, in some embodiments, the upper portion of the second housing 200 is opened with a viewing port 211 therethrough, so that when the head of the human body is positioned inside the device, the external environment can be seen through the viewing port 211. In some embodiments, considering that no winding is formed in the middle of the induction coil unit, the viewing port 211 may be opened corresponding to the structure of the second coil array 520, that is, one viewing port is opened in the middle of each coil unit, so as to provide the greatest possible field of view for the subject.
For further making and being observed the environment in scan bed the place ahead by the person that measurands, reflection of light subassembly 400 can be dismantled and locate the top of viewing aperture 211, and reflection of light subassembly 400 corresponds the position of locating human glasses to can reflect the scene in the dead ahead of scan bed to measurands the person field of vision through two plane mirror reflections, improve and measure person's detection experience.
Fig. 5 and 6 show the structures of the second coil array 520 and the first coil array 510 in the embodiment of the present disclosure.
As shown in fig. 5, the second coil array 520 includes a second head coil array 521 located at the second head housing part 210. The second head coil array 521 has two rows in the z direction, each row has 4 coil units, that is, the second head coil array 521 includes 8 coil units, and two adjacent coil units are arranged with a partial overlap therebetween for decoupling. The second coil array 520 further includes a second neck coil array 522 positioned at the second neck shell part 220, the second neck coil array 522 is provided in a row of 2 coil units in total, and the two coil units are partially overlapped to be decoupled.
As shown in fig. 6, the first coil array 510 includes a first head coil array 511 located at the first head part 110. The first head coil array 511 has two rows in the z direction, each row has 4 coil units, that is, the first head coil array 511 includes 8 coil units, and two adjacent coil units are partially overlapped to be decoupled. The first coil array 510 further includes a first neck coil array 512 disposed on the first neck shell portion 120, the first neck coil array 512 includes two rows of 3 coil units in the z-direction, that is, the first neck coil array 512 includes 6 coil units, and two adjacent coil units are disposed with a partial overlap therebetween for decoupling.
As can be seen from the above, in the head and neck radio frequency coil device according to the embodiment of the present disclosure, the head includes 16 coil units, that is, 16 radio frequency channels, and the neck includes 8 radio frequency channels. The 16 radio frequency channels of the first head coil array 511 and the second head coil array 521 can satisfy the scanning range of the human head. The 8 radio frequency channels of the first neck coil array 512 and the second neck coil array 522 can satisfy the scanning ranges of the neck, the aortic arch, the brachial plexus and the like of the human body, and the scanning range is larger. In addition, the number of channels of the device of the embodiment is larger than that of the conventional clinical head and neck coil assembly, so that higher signal to noise ratio and acceleration factor can be provided, and the imaging quality is improved.
As can be seen from the above, the head and neck radio frequency coil device in the embodiment of the present disclosure is convenient for use of the device by providing the first housing and the second housing which are detachably connected. And first binding post and second binding post set firmly on the casing, do not have external cable to reduce the electromagnetic interference that the cable brought to a certain extent, improve magnetic resonance imaging quality, and reduce external cable and simplify the device structure. First binding post and second binding post can dismantle the connection at two casings in, correspond and to dismantle electric connection to need not to carry out electric assembly after mechanical assembly, the simplified operation improves and uses the convenience. And the neck shell and the head shell are integrally and rigidly connected, so that the structure and the operation of the device are simplified, a binding band is not needed, and the magnetic resonance is convenient to use.
In a second aspect, the present disclosure provides a scanning bed suitable for a magnetic resonance apparatus, which includes a bed body and a head and neck rf coil device in any one of the embodiments of the first aspect, wherein the first housing is connected to the bed body.
In a third aspect, the present disclosure provides a magnetic resonance apparatus comprising a head and neck radio frequency coil device according to any one of the embodiments of the first aspect.
As can be seen from the above, since the scanning bed and the magnetic resonance apparatus of the present disclosure include the above-mentioned head and neck radio frequency coil device, all the above-mentioned advantages are also achieved, and are not described herein again.
It should be understood that the above embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the present disclosure may be made without departing from the scope of the present disclosure.
Claims (11)
1. A head and neck radio frequency coil device for a magnetic resonance apparatus,
the head and neck part accommodating device comprises a first shell (100) and a second shell (200) which are detachably connected, a first coil array (510) arranged in the first shell (100) and a second coil array (520) arranged in the second shell (200), wherein the first shell (100) and the second shell (200) are connected to form an accommodating cavity for accommodating a head and neck part, and the inner wall of the accommodating cavity is matched with the shape of the head and neck part;
the first wiring terminal of the first coil array (510) is fixedly arranged on the first shell (100), the second wiring terminal (331) of the second coil array (520) is fixedly arranged on the second shell (200), and when the first shell (100) and the second shell (200) are detachably connected, the first wiring terminal and the second wiring terminal (331) are correspondingly detachably and electrically connected.
2. The head and neck radio frequency coil device according to claim 1,
the bottom of the first shell (100) is suitable for being fixedly arranged on a bed body, the upper part of the first shell (100) is suitable for being detachably connected with the second shell (200), the first shell (100) comprises a first head shell part (110) and a first neck shell part (120) which are integrally connected, and the first coil array (510) is arranged inside the first head shell part (110) and the first neck shell part (120).
3. The head and neck radio frequency coil device according to claim 1,
the first shell (100) and the second shell (200) are detachably connected through a locking mechanism, and the locking mechanism comprises a clamping structure (340) and a positioning structure which are respectively arranged at two opposite ends;
the clamping structure (340) comprises a buckle and a clamping groove which are mutually clamped and connected, the buckle is arranged on one of the first shell (100) and the second shell (200), and the clamping groove is correspondingly arranged on the other one of the first shell (100) and the second shell (200);
the positioning structure comprises a positioning groove (312) and a positioning pin (311) which are matched with each other, the positioning groove (312) is arranged on one of the first shell (100) and the second shell (200), and the positioning pin (311) is correspondingly and fixedly arranged on the other one of the first shell (100) and the second shell (200);
when the buckle is connected with the clamping groove in a clamping mode, the positioning pin (311) is in plug-in fit with the positioning groove (312).
4. The head and neck radio frequency coil device according to claim 3,
the locking mechanism further comprises a sliding structure, the sliding structure comprises a sliding groove (322) and a protrusion (321) which are in sliding fit with each other, the sliding groove (322) is arranged on one of the first shell (100) and the second shell (200), and the protrusion (321) is arranged on the other of the first shell (100) and the second shell (200);
when the first shell (100) is connected with the second shell (200), the protrusion (321) slides in the sliding groove (322) so that the positioning pin (311) is in plug-in fit with the positioning groove (312).
5. The head and neck radio frequency coil device according to claim 4,
the first wiring terminal is arranged on a first end face perpendicular to the sliding direction, the second wiring terminal (331) is arranged on a second end face perpendicular to the sliding direction, and when the buckle and the clamping groove are clamped and connected, the first wiring terminal is electrically connected with the second wiring terminal (331).
6. The head and neck radio frequency coil device according to claim 1,
the second housing (200) comprises a second head shell part (210) and a second neck shell part (220) which are integrally connected, and the second coil array (520) is arranged inside the second head shell part (210) and the second neck shell part (220).
7. The head and neck radio frequency coil device according to claim 2,
the first coil array (510) comprises a first head coil array (511) located at the first head portion (110), and a first neck coil array (512) located at the first neck portion (120);
in a z-axis direction of the magnetic resonance apparatus, the first head coil array (511) comprises two rows of 8 coil units in total, and the first neck coil array (512) comprises two rows of 6 coil units in total.
8. The head and neck radio frequency coil device according to claim 6,
the second coil array (520) comprises a second head coil array (521) located at the second head shell portion (210) and a second neck coil array (522) located at the second neck shell portion (220);
in a z-axis direction of the magnetic resonance apparatus, the second head coil array (521) includes two rows of 8 coil units in total, and the second neck coil array (522) includes one row of 2 coil units in total.
9. The whip radio frequency coil apparatus as claimed in claim 2, further comprising:
reflecting component (400), viewing aperture (211) that runs through the casing is seted up on second casing (200) upper portion, reflecting component (400) can be dismantled and locate viewing aperture (211) top of second casing (200).
10. A scanning bed adapted for use in a magnetic resonance apparatus, comprising:
a bed body; and
the head and neck radio frequency coil device according to any of claims 1 to 9, wherein the first housing (100) is attached to the bed.
11. A magnetic resonance apparatus, characterized by comprising a head and neck radio frequency coil arrangement according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067747.4A CN111123181A (en) | 2020-01-20 | 2020-01-20 | Head and neck radio frequency coil device, scanning bed and magnetic resonance equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067747.4A CN111123181A (en) | 2020-01-20 | 2020-01-20 | Head and neck radio frequency coil device, scanning bed and magnetic resonance equipment |
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| CN111123181A true CN111123181A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010067747.4A Pending CN111123181A (en) | 2020-01-20 | 2020-01-20 | Head and neck radio frequency coil device, scanning bed and magnetic resonance equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113109749A (en) * | 2021-05-08 | 2021-07-13 | 苏州众志医疗科技有限公司 | Split type radio frequency coil device for magnetic resonance head and neck imaging |
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Application publication date: 20200508 |