Magnetic resonance coil assembly

Abstract

This invention provides a magnetic resonance coil assembly, comprising a transmitting coil portion, a first housing, and a transmitting coil disposed inside or on the surface of the first housing, the first housing radially surrounding to form a receiving space; an upper receiving coil portion disposed above the receiving space; and a lower receiving coil portion, partially or entirely curved to form a receiving groove for accommodating and supporting at least a portion of a detection object; the transmitting coil portion is axially movable along the receiving space so that at least a portion of the lower receiving coil portion is positioned below the receiving space. By combining the transmitting coil portion and the upper receiving coil portion, the magnetic resonance coil assembly is simplified in operation, and its size and weight are reduced, as are the assembly time and procedures for combining the upper and lower receiving coil portions and the transmitting coil portion, and the magnetic resonance signal emitted by the detection object is received more fully.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a magnetic resonance coil assembly. Background Technology

[0002] Magnetic resonance systems in the prior art (also known as MR or MRT) typically include multiple different antennas (also known as coils) for transmitting radio frequency pulses for magnetic resonance and / or acquiring induced magnetic resonance signals.

[0003] Magnetic resonance coil assemblies can be categorized into purely receiving coils and coils that integrate both receiving and transmitting functions, based on their radio frequency design. Purely receiving coils, lacking a transmitting unit, allow for flexible design; however, because the transmitting unit of a magnetic resonance system with a purely receiving coil is located in the system structure and relatively far from the object being detected, its efficiency is lower.

[0004] Integrated receiving and transmitting coils have many limitations. The transmitting unit (antenna) comes in various forms, but not all forms have specific physical limitations, size requirements, or guaranteed structural stability. Therefore, achieving a uniform transmission field is difficult, which hinders effective excitation of the scanned tissue and results in poor signal reception. Furthermore, integrated receiving and transmitting coils add a transmitting component compared to pure receiving coils. This necessitates additional components or features in the structural design for supporting, positioning, protecting, or fixing the coil antenna, leading to increased size and weight. In addition, the transmitting unit requires shielding to prevent power loss or other system impacts, necessitating additional structural components to achieve shielding functionality and effectiveness, further increasing weight and size. Moreover, for head-mounted MRI systems, the head location obstructs vision. To maximize power delivery to the scanned tissue, the transmitting unit of the receiving and transmitting coils is designed with the antenna as close to the tissue as possible, significantly increasing the claustrophobic sensation. Summary of the Invention

[0005] The purpose of this invention is to provide a magnetic resonance coil assembly that reduces the size and weight of the magnetic resonance coil assembly, reduces the time and process of assembling the upper receiving coil, lower receiving coil, and transmitting coil, and more fully receives the magnetic resonance signal emitted by the object being detected.

[0006] To achieve the above and other related objectives, the present invention provides a magnetic resonance coil assembly, comprising:

[0007] The transmitting coil section includes a first housing and a transmitting coil disposed inside or on the surface of the first housing, wherein the first housing radially surrounds to form a receiving space;

[0008] The upper part of the receiving coil can be detachably or fixedly installed in the upper part of the receiving space;

[0009] The lower part of the receiving coil is partially or entirely curved to form a receiving groove;

[0010] The transmitting coil portion is movable axially along the receiving space so that at least a portion of the lower portion of the receiving coil is positioned in the lower part of the receiving space.

[0011] Optionally, in the magnetic resonance coil assembly, the lower part of the receiving coil includes a second housing and a first receiving coil, the upper surface of the second housing is recessed to form the receiving groove, and the first receiving coil is carried on the surface of the second housing or in the second housing.

[0012] Optionally, in the magnetic resonance coil assembly, the first housing includes a male connector end, the second housing includes a female connector end, and when the transmitting coil portion moves axially along the accommodating space to a set position, the male connector end and the female connector end form a mating structure.

[0013] Optionally, in the magnetic resonance coil assembly, a locking structure is further provided between the first housing and the second housing. The locking structure is connected to a knob, which is located on the outside of the first housing. The second housing and the first housing are locked in a set position by driving the locking structure through the knob.

[0014] Optionally, in the magnetic resonance coil assembly, the first housing is arranged to form a cylindrical housing, the transmitting coil is disposed on the outer surface of the cylindrical housing, the upper part of the receiving coil is fixed to the inner surface of the cylindrical housing, and the upper part of the receiving coil is slidably connected to the lower part of the receiving coil.

[0015] Optionally, in the magnetic resonance coil assembly, the transmitting coil portion further includes a shielding shell, which is fitted over the outside of the first housing.

[0016] Optionally, in the magnetic resonance coil assembly, the upper part of the receiving coil includes an upper support structure and a second receiving coil, the upper support structure being located in the upper half of the accommodating space, and the second receiving coil being located inside or on the surface of the upper support structure.

[0017] Optionally, in the magnetic resonance coil assembly, the upper support structure is provided with a window, and an observation channel is formed on the inner side of the first housing, the observation channel extending from the end of the first housing to the window position of the upper support structure.

[0018] Optionally, in the magnetic resonance coil assembly, a periscope is also provided at the window position, and the periscope forms a set angle with the extension direction of the observation channel.

[0019] Optionally, in the magnetic resonance coil assembly, the lower part of the receiving coil further includes a first bracket and a second bracket supported at both ends of the second housing, and the transmitting coil part moves between the first bracket and the second bracket.

[0020] Optionally, in the magnetic resonance coil assembly, a connecting rod is provided between the first support and the second support, the connecting rod carrying the transmitting coil portion, and the transmitting coil portion being slidable along the connecting rod.

[0021] The magnetic resonance coil assembly provided by this invention combines the transmitting coil and the upper receiving coil, which helps reduce the size and weight of the assembly. After the object to be detected is positioned or located at the lower part of the receiving coil, the upper receiving coil can be moved by moving the transmitting coil, thus forming a complete receiving coil assembly. This simplifies operation and reduces the time and steps required to assemble the upper and lower receiving coils and the transmitting coil. Furthermore, because the assembly includes both the upper and lower receiving coils, it can simultaneously receive magnetic resonance signals from both the face and the back, allowing for more comprehensive reception of the magnetic resonance signals emitted by the object. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a magnetic resonance coil assembly according to an embodiment of the present invention;

[0023] Figure 2A This is a schematic diagram of the lower part of the receiving coil according to an embodiment of the present invention;

[0024] Figure 2B This is a schematic diagram of the unfolded first receiving coil according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the transmitting coil section and the upper part of the receiving coil in a magnetic resonance coil assembly according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the transmitting coil arranged on the first housing according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of a magnetic resonance coil assembly with a locking structure according to an embodiment of the present invention;

[0028] Figure 6This is a schematic diagram of the structure of the upper part and the lower part of the receiving coil in a magnetic resonance coil assembly according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the second housing and the first housing unlocked according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a magnetic resonance coil assembly in which the upper part of the receiving coil and the lower part of the receiving coil form a complete receiving coil combination according to an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure in which the second housing and the first housing are locked according to an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of a magnetic resonance coil assembly with a periscope in one embodiment of the present invention;

[0033] Figure 11 This is another structural schematic diagram of a magnetic resonance coil assembly according to an embodiment of the present invention;

[0034] Figure 1-11 middle,

[0035] 11-Transmitting coil section, 111-First housing, 112-Transmitting coil, 113-Locking structure, 114-Knob, 115-Shielding shell, 116-Window position, 117-Periscope, 118-Observation channel, 12-Upper part of receiving coil, 121-Upper support structure, 122-Second receiving coil, 13-Lower part of receiving coil, 131-Second housing, 1311-Connector female end, 1312-Slide rail, 132-Receiving slot, 133-First receiving coil, 14-Plug section, 15-First bracket, 16-Second bracket, 17-Connecting rod. Detailed Implementation

[0036] The existing head coil, which integrates the receiver and transmitter, has a large overall coil size. The cables for the receiver and transmitter coils are separate, and the cables for the upper and lower parts of the receiver coil are also separate, resulting in a poor workflow. Furthermore, the separation of the transmitter and receiver coils leads to dimensional redundancy and increases the structural weight of the components. In addition, the movement of the upper and lower parts of the receiver coil lacks a locking structure, posing risks to scanning stability.

[0037] To address the aforementioned problems, this invention provides a magnetic resonance coil assembly. By combining the transmitting coil section with the upper receiving coil section, the size and weight of the magnetic resonance coil assembly can be reduced. Furthermore, after the detection object is positioned or located at the lower part of the receiving coil, the upper receiving coil section can be moved by moving the transmitting coil section, thereby forming a complete receiving coil assembly with the upper and lower receiving coil sections. In other words, the magnetic resonance coil assembly is simple to operate and can reduce the time and process of assembling the upper and lower receiving coil sections and the transmitting coil section.

[0038] The magnetic resonance coil assembly proposed in this invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this invention.

[0039] See Figure 1The magnetic resonance coil assembly includes a transmitting coil section 11, an upper receiving coil section 12, and a lower receiving coil section 13. The transmitting coil section 11 may house a transmitting coil for transmitting radio frequency pulses. The upper receiving coil section 12 and the lower receiving coil section 13 may each house a receiving coil for receiving magnetic resonance signals. The upper receiving coil section 12 can receive magnetic resonance signals from the front / face of the object being tested, while the lower receiving coil section 13 can receive magnetic resonance signals from the rear / back of the object being tested. The transmitting coil section 11 can surround and form a receiving space, and can be driven to form a radio frequency emission field / B1 field within the receiving space. The upper receiving coil section 12 can be fixed to the upper part of the receiving space by static connection methods such as riveting or bonding, or it can be detachably fixed to the upper part of the receiving space by threaded connection, pin connection, latching connection, or plug-in connection. The lower part 13 of the receiving coil can be used as a support component. The transmitting coil part 11 is slidably connected to the lower part 13 of the receiving coil. The transmitting coil part 11 can move relative to the lower part 13 of the receiving coil so that the lower part 13 of the receiving coil is located in the lower part of the receiving space. For example, when the transmitting coil part 11 and the upper part 12 of the receiving coil are not combined, the lower part 13 of the receiving coil is placed on the hospital bed. Moving the position of the transmitting coil part 11 can make the lower part 13 of the receiving coil located within the receiving space, specifically in the lower part of the receiving space. After the transmitting coil part 11 transmits radio frequency pulses, the lower part 13 of the receiving coil can independently receive the magnetic resonance signal generated by the stimulated object. For example, after the transmitting coil part 11 and the receiving coil upper part 12 are combined, moving the position of the transmitting coil part 11 can drive the receiving coil upper part 12 connected to it. The receiving coil lower part 13 is located in the lower part of the accommodating space. After the transmitting coil part 11 transmits radio frequency pulses, the receiving coil upper part 12 and the receiving coil lower part 13, which are in different positions, can simultaneously receive the magnetic resonance signal generated by the stimulated object.

[0040] See Figure 2A The lower part 13 of the receiving coil is partially or entirely curved to form a receiving groove 132, which can be used to accommodate and support at least a portion of the object to be detected, i.e., the receiving groove 132 can be used to accommodate the part of the object to be detected.

[0041] See Figure 2A and 2BThe lower part 13 of the receiving coil includes a second housing 131 and a first receiving coil 133. A portion of the upper surface of the second housing 131 is recessed to form the receiving groove 132, and the first receiving coil 133 is supported within the second housing 131. Alternatively, it can be supported on the surface of the second housing 131. The recessed upper surface of the second housing 131 forms the receiving groove 132, which extends axially, and a portion of the receiving groove 132 is shaped like a semi-domed dome, conforming to the shape of the human head. While bearing the load, the first receiving coil 133 located in the second housing 131 can also receive magnetic resonance signals from the back of the head, and the lower part 13 of the receiving coil plays a primary role in bearing the load.

[0042] Optionally, the first receiving coil 133 includes a phased array structure formed by multiple coil units. For example... Figure 2B The diagram shows a schematic representation of the unfolded first receiving coil according to an embodiment. The first receiving coil 133 includes a first coil unit group, a second coil unit group, and a third coil unit group sequentially distributed along the axial direction of the receiving groove 132. The number of coil units included in the aforementioned three coil unit groups can be the same or different. In this embodiment, four coil units c11, c12, c13, and c14, which are continuously distributed at the top, form the first coil unit group; six coil units c21, c22, c23, c24, c25, and c26, which are adjacent to the first coil unit group, form the second coil unit group; and four coil units c31, c32, c33, and c34, which are adjacent to the second coil unit group, form the third coil unit group. The coil units can be constructed from copper foil, copper wires, coaxial cables, etc., according to a certain shape, and each coil unit is a closed loop for receiving magnetic resonance signals.

[0043] See Figure 3 The transmitting coil section 11 includes a first housing 111 and a transmitting coil 112 disposed inside or on the surface of the first housing 111. The first housing 111 radially surrounds a receiving space, and the transmitting coil 112 is used to apply radio frequency pulses to the receiving space. Preferably, the first housing 111 surrounds a cylindrical housing, one end of which is configured as a completely open opening, and the other end as a semi-closed housing with an opening. The lower part 13 of the receiving coil can partially pass through the opening of the semi-closed housing, and the transmitting coil 112 is disposed on the outer surface of the cylindrical housing. More preferably, the transmitting coil 112 is uniformly arranged on the cylindrical housing, so that the transmitting coil 112 provides a uniform transmission field and can meet the reliability and stability of transmission. See [reference needed]. Figures 4-8The transmitting coil portion 11 is movable along an axial direction parallel to the receiving space, such that at least a portion of the receiving coil lower portion 13 is positioned in the lower part of the receiving space.

[0044] Optionally, the transmitting coil 112 can be configured as a birdcage coil or a transmitting array coil. Please refer to the appendix for further details. Figure 3 The transmitting coil 112 includes two end rings located at its ends, and a plurality of legs are disposed between the two end rings. The plurality of legs extend from one end ring to the other end ring, and are arranged side by side along the circumference of the first housing 111. Thus, the two end rings and the plurality of legs together form a birdcage coil.

[0045] The first housing 111 or the upper part 12 of the receiving coil may include a male connector terminal (not shown in the figure), and the second housing 131 includes a female connector terminal 1311. When the transmitting coil part 11 moves axially along the accommodating space to a set position, the male connector terminal and the female connector terminal 1311 form a mating structure. The male connector terminal and the female connector terminal 1311 may simultaneously be provided with various types of pins, such as RF pins and DC pins, respectively used to drive the transmitting coil 112 of the transmitting coil part 11, to achieve resonance and detuning of the first receiving coil 133 in the lower part 13 of the receiving coil, and to achieve resonance and detuning of the second receiving coil 122 in the upper part 12 of the receiving coil. For example, when the transmitting coil section 11 moves to a set position (e.g., the position corresponding to the transmitting coil section 11 when the upper and lower receiving coil sections form a complete receiving coil assembly), the male and female connector ends 1311 form a mating structure, electrically connecting and conducting, allowing the transmitting coil section 11 to connect to an external cable, and enabling the electrical components inside the upper and lower receiving coil sections to conduct to the external cable, thus allowing the magnetic resonance coil assembly to be detected. When the transmitting coil section 11 is not moved to the set position (e.g., when the upper and lower receiving coil sections do not form a complete receiving coil assembly), the male and female connector ends 1311 separate, and only the lower receiving coil section 13 can be electrically connected to the external cable; the transmitting coil section 11 and the upper receiving coil section 12 cannot be electrically connected to an external power source.

[0046] By forming a mating structure between the male end of the connector and the female end of the connector 1311, the electrical ports of the upper part 12 and the lower part 13 of the receiving coil can be reused. At the same time, the cables of the plug part 14 can be placed in the lower part 13 of the receiving coil. On the one hand, the number of cables can be reduced, and the transmitting coil, the upper part 12 and the lower part 13 of the receiving coil can all be electrically connected to the outside through the connector. On the other hand, the cables can be placed in the stationary lower part 13 of the receiving coil, which can reduce the number of bends and improve the service life of the cables.

[0047] It is understood that the placement of the cable in the plug portion 14 is not specifically limited in this embodiment. In other embodiments, the cable in the plug portion 14 can be placed in different positions. For example, the cable in the plug portion 14 electrically connected to the upper part 12 of the receiving coil can be placed at the upper part, the cable in the plug portion 14 electrically connected to the lower part 13 of the receiving coil can be placed at the lower part, and the cable in the plug portion 14 electrically connected to the transmitting coil part 11 can be placed at one or more positions such as the side, the upper part, and the lower part. The cable in the plug portion 14 is not necessary for the magnetic resonance coil assembly. In other embodiments, the cable in the plug portion 14 can be omitted, and an electrical interface can be provided at the lower part 13 of the receiving coil. Correspondingly, an electrical interface can also be provided on the hospital bed, and the electrical interface at the lower part 13 of the receiving coil cooperates with the electrical interface on the hospital bed.

[0048] See Figure 5 A locking structure 113 is also provided between the first housing 111 and the second housing 131. The locking structure 113 is connected to a knob 114. The knob 114 is located on the outside of the first housing 111. The second housing 131 and the first housing 111 are locked in a set position by driving the locking structure through the knob 114.

[0049] The locking structure 113 includes a spindle and a bushing fixed to the end of the first housing 111. The bushing is fitted over the spindle, and the two are connected by a thread. More specifically: the end of the first housing 111 is provided with a through hole; the main body of the bushing is located inside the end of the first housing 111, i.e., within the receiving space; one end of the spindle passes through the end of the first housing 111 and is housed in the bushing by a compression spring, and the other end of the spindle is connected to the knob 114; the second housing 131 of the lower part 13 of the receiving coil may be provided with a positioning part. When one end of the spindle moves into the positioning part, the second housing 131 and the first housing 111 can be locked in a set position. For example, one end of the spindle is provided with a spiral groove, and the inner side of the positioning part is provided with a protrusion that cooperates with the spiral groove. The gap between the protrusion and the spiral groove is matched to fix the upper part 12 and the lower part 13 of the receiving coil relatively. Rotating the spindle allows the protrusion to disengage from the gap in the spiral groove, thus unlocking the upper part 12 and the lower part 13 of the receiving coil.

[0050] See Figure 6 and Figure 7By rotating the knob 114 to the unlocked position, the second housing 131 is unlocked from the first housing 111, and the upper part 12 of the receiving coil can slide along the lower part 13 of the receiving coil, thereby separating the complete receiving coil assembly formed by the upper part 12 and the lower part 13 of the receiving coil and retracting it from the movement space of the detected object; secondly, see Figure 8 and Figure 9 After the object to be detected lies down, the upper part 12 of the receiving coil is slid along the lower part 13 of the receiving coil so that the upper part 12 and the lower part 13 of the receiving coil form a complete receiving coil combination. Then, the second housing 131 is locked to the first housing 111 by rotating the knob 114 to the locked position.

[0051] A locking structure 113 is provided between the first housing 111 and the second housing 131 to prevent potential scanning risks caused by vibration or movement of the coil assembly due to the movement of the scanned object during long-term scanning.

[0052] The transmitting coil section 11 further includes a shielding shell 115, which is fitted over the outside of the first housing 111. The inner wall of the shielding shell 115 is provided with a shielding layer to achieve external shielding of the transmitting coil, thereby avoiding power loss or other impacts on the system.

[0053] The upper part 12 of the receiving coil is detachably or fixedly disposed in the upper part of the accommodating space. Preferably, the upper part 12 of the receiving coil is fixed to the inner surface of the cylindrical housing, that is, the upper part 12 of the receiving coil is fixed to the inner surface of the first housing 111. The upper parts of the transmitting coil and the receiving coil are disposed on different surfaces of the cylindrical housing, which can prevent the heat generated by the operation of the transmitting coil from affecting the performance of the receiving coil; at the same time, the receiving coil is closer to the detection object, which can improve the receiving sensitivity. Since the transmitting coil part 11 and the upper part 12 of the receiving coil are combined, after the detection object is positioned or located in the lower part of the receiving coil, the upper part 12 of the receiving coil can be moved by moving the transmitting coil part 11, so that the upper part 12 and the lower part 13 of the receiving coil form a complete receiving coil assembly. Therefore, the magnetic resonance coil assembly is simple to operate, which can reduce the time and process of assembling the upper part of the receiving coil, the lower part of the receiving coil and the transmitting coil, and also helps to reduce the size and weight of the magnetic resonance coil assembly.

[0054] See Figure 3The upper part 12 of the receiving coil includes an upper support structure 121 and a second receiving coil 122. The upper support structure 121 is located in the upper half of the receiving cavity and has a window. The second receiving coil 122 is located inside or on the surface of the upper support structure 121, and multiple second receiving coils 122 form an array structure. The arrangement of the receiving coils 122 needs to avoid the window on the upper support structure 121. Preferably, the second receiving coils 122 are evenly arranged on the surface of the upper support structure 121, which can more fully receive the magnetic resonance signals emitted by the detection area of ​​the object being detected. Since the first receiving coil 133 and the second receiving coil 122 are located in the upper and lower parts of the receiving space, the magnetic resonance signals of the face and the back can be received simultaneously when the magnetic resonance coil assembly is performing detection.

[0055] The transmitting coil 11 and the upper receiving coil 12 are mounted on completely different support structures, further increasing the distance between them and preventing the excessive heat generated by the transmitting coil 11 from affecting the receiving sensitivity of the upper receiving coil 12. Simultaneously, the upper receiving coil 12 is closer to the human body surface, resulting in higher sensitivity. Furthermore, the opening in the upper support structure 121 prevents claustrophobia caused to the eyes of the subject due to the close proximity of the upper receiving coil to tissue.

[0056] The upper part 12 of the receiving coil can be slidably connected to the transmitting coil part or the lower part 13 of the receiving coil, allowing for movement of the object being detected. After the object is placed inside, the connection is slidably closed, facilitating the doctor's operation. Specifically, a sliding connection structure is provided between the upper support structure 121 and the second housing 131. Any connection structure that allows the upper part 12 of the receiving coil to slide within the lower part 13 of the receiving coil is within the scope of protection of this invention. For example, referring to Figure 2, sliders (not shown in the figure) are provided on both sides of the upper support structure 121, and slide rails 1312 are provided on both sides of the second housing 131. The sliders cooperate with the slide rails 1312, allowing the upper part 12 of the receiving coil to slide within the lower part 13 of the receiving coil, thus enabling the transmitting coil part 11 to move axially along the accommodating space. Sliding allows the upper part 12 of the receiving coil and the lower part 13 of the receiving coil to be combined and separated. See also... Figure 6 and Figure 8 ,in Figure 6 A schematic diagram of the combination of the upper part 12 and the lower part 13 of the receiving coil is shown. Figure 8 A schematic diagram showing the separation of the upper part 12 and the lower part 13 of the receiving coil is shown.

[0057] See also Figure 1 and Figure 10 An observation channel 118 is formed on the inner side of the first housing 111, and the observation channel 118 extends from the end of the first housing 111 to the window position 116. The presence of the observation channel 118 can avoid directly opening a window on the first housing 111, improve the uniformity of the radio frequency emission field formed by the transmitting coil, and at the same time avoid affecting the shielding effect due to openings on the shielding shell.

[0058] A periscope 117 is also provided at the window position 116. The periscope 117 forms a set angle with the extension direction of the observation channel 118 to reduce the patient's claustrophobic feeling, while allowing external videos and pictures to enter the eyes and meeting the requirements of visual stimulation. The set angle is preferably in the range of 0° to 90°.

[0059] In addition, the lower part 13 of the receiving coil may also include a first bracket 15 and a second bracket 16 supported at both ends of the second housing 131. The transmitting coil part 11 carries the upper part 12 of the receiving coil and moves between the first bracket 15 and the second bracket 16. Please refer to [link to relevant documentation]. Figure 11 The second support 16 is located at one end of the second housing 131 where the observation channel 118 is located, and the first support 15 is located at the other end of the second housing 131 opposite to the observation channel 118. The height of the first support 15 can be set to be the same as or different from that of the second support 16. Optionally, the height of the first support 15 can be set to be lower than that of the second support 16. In this configuration, when the subject's head is accommodated in the receiving slot, the top of the receiving slot is higher than the opening of the receiving slot, thereby forming a receiving slot with an inclined angle, which can reduce the dizziness of the patient during long-term supine scanning.

[0060] A connecting rod 17 can be provided between the first support 15 and the second support 16, and the connecting rod 17 can support the transmitting coil part 11. In this embodiment, the transmitting coil part 11 may be provided with a through hole on its side, specifically on the outside of the shielding shell 115. The connecting rod 17 passes through the through hole, and one end of the connecting rod 17 is fixed to the first support 15, and the other end of the connecting rod 17 is fixed to the second support 16. The transmitting coil part 11 can slide along the connecting rod 17. Of course, it is understood that the through hole can also be provided at the bottom of the transmitting coil part 11, and the number of through holes can be one or more. The two supports can support the lower part of the receiving coil, so that there can be a gap between the lower part of the receiving coil and the bed, and the transmitting coil part can move axially along the accommodating space and can be sleeved on the outside of the lower part of the receiving coil. Therefore, the lower part of the receiving coil and the transmitting coil part are independent, reducing the weight of moving the transmitting coil part. At the same time, the two supports limit the movement distance of the transmitting coil part supporting the upper part of the receiving coil, avoiding excessive force that could cause the transmitting coil part to slip. That is, the transmitting coil part 11 and the receiving coil lower part 13 are respectively fixed on the bracket, which can reduce the complexity of the design; moreover, there is no need to set a sliding connection structure inside the accommodating space and the receiving coil lower part 13, which reduces the complexity of the design.

[0061] In summary, the magnetic resonance coil assembly provided by this invention combines the transmitting coil and the upper receiving coil, which helps reduce the size and weight of the assembly. Furthermore, after the object to be detected is positioned or located at the lower part of the receiving coil, the upper receiving coil can be moved by moving the transmitting coil, thus forming a complete receiving coil assembly. This simplifies the operation of the magnetic resonance coil assembly and reduces the time and process required for assembling the upper and lower receiving coils and the transmitting coil. Because the magnetic resonance coil assembly includes both the upper and lower receiving coils, it can simultaneously receive magnetic resonance signals from both the face and the back, allowing for more comprehensive and multi-directional reception of magnetic resonance signals emitted by the object.

[0062] Furthermore, all cables of the magnetic resonance coil assembly provided by the present invention can be placed under the receiving coil, which can improve the stability of the structure, reduce the number of coil components, thereby reducing the size and weight of the magnetic resonance coil assembly and increasing the service life of the magnetic resonance coil assembly.

[0063] Meanwhile, the magnetic resonance coil assembly provided by the present invention also includes a periscope and a locking structure, which can ensure the connectivity of electrical components in the transmitting coil, the upper part of the receiving coil and the lower part of the receiving coil and the reliability of the scanning of the magnetic resonance coil assembly. It can also reduce the patient's claustrophobic feeling and meet the requirements of visual stimulation.

[0064] Furthermore, it should be noted that, unless otherwise specified or indicated, the terms "first," "second," etc., in the specification are used only to distinguish the various components, elements, steps, etc. in the specification, and are not used to indicate the logical or sequential relationships between the various components, elements, steps, etc.

[0065] It is understood that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the technical solutions of the present invention based on the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention shall still fall within the protection scope of the present invention.

[0066] Furthermore, it should be understood that the invention is not limited to the specific methods, compounds, materials, manufacturing techniques, uses, and applications described herein, which can vary. It should also be understood that the terminology described herein is used only to describe particular embodiments and not to limit the scope of the invention. It must be noted that the singular forms “a,” “an,” and “the” used herein and in the appended claims include plural bases unless the context clearly indicates otherwise. Thus, for example, a reference to “a step” or “an apparatus” means a reference to one or more steps or apparatuses, and may include secondary steps and secondary apparatuses. All conjunctions used should be understood in the broadest sense. Therefore, the word “or” should be understood to have the definition of logical “or” rather than logical “exclusive”, unless the context clearly indicates otherwise. Structures described herein will be understood to also refer to functional equivalents of that structure. Language that can be interpreted as approximate should be understood in that way, unless the context clearly indicates otherwise.

Claims

1. A magnetic resonance coil assembly, characterized in that, Suitable for head detection, including: The transmitting coil section includes a first housing and a transmitting coil disposed inside or on the surface of the first housing, wherein the first housing radially surrounds to form a receiving space; The upper part of the receiving coil can be detachably or fixedly installed in the upper part of the receiving space; The lower part of the receiving coil is partially or entirely curved to form a receiving groove; The transmitting coil portion is movable along the axial direction of the receiving space, such that at least a portion of the lower portion of the receiving coil is placed in the lower part of the receiving space. The lower portion of the receiving coil is placed on the hospital bed. The upper portion of the receiving coil is slidably connected to the lower portion of the receiving coil. After the transmitting coil portion and the upper portion of the receiving coil are combined, moving the position of the transmitting coil portion can drive the upper portion of the receiving coil connected to it to form a complete receiving coil combination. The upper portion of the receiving coil can slide along the lower portion of the receiving coil, thereby separating the complete receiving coil combination formed by the upper portion of the receiving coil and the lower portion of the receiving coil.

2. The magnetic resonance coil assembly as claimed in claim 1, characterized in that, The lower part of the receiving coil includes a second housing and a first receiving coil. The upper surface of the second housing is recessed to form the receiving groove, and the first receiving coil is supported on the surface of the second housing or in the second housing.

3. The magnetic resonance coil assembly as described in claim 2, characterized in that, The first housing includes a male connector end, and the second housing includes a female connector end. When the transmitting coil portion moves axially along the accommodating space to a set position, the male connector end and the female connector end form a mating structure.

4. The magnetic resonance coil assembly as described in any one of claims 2 to 3, characterized in that, A locking structure is also provided between the first housing and the second housing. The locking structure is connected to a knob, which is located on the outside of the first housing. The second housing and the first housing are locked in a set position by driving the locking structure through the knob.

5. The magnetic resonance coil assembly as claimed in claim 1, characterized in that, The first housing is arranged to form a cylindrical housing, the transmitting coil is disposed on the outer surface of the cylindrical housing, and the upper part of the receiving coil is fixed to the inner surface of the cylindrical housing.

6. The magnetic resonance coil assembly as claimed in claim 1, characterized in that, The upper part of the receiving coil includes an upper support structure and a second receiving coil. The upper support structure is located in the upper half of the accommodating space, and the second receiving coil is located inside or on the surface of the upper support structure.

7. The magnetic resonance coil assembly as claimed in claim 6, characterized in that, The upper support structure is provided with a window, and an observation channel is formed on the inner side of the first housing, the observation channel extending from the end of the first housing to the window position of the upper support structure.

8. The magnetic resonance coil assembly as claimed in claim 7, characterized in that, A periscope is also provided at the window position, and the periscope is at a set angle to the extension direction of the observation channel.

9. The magnetic resonance coil assembly as claimed in claim 2, characterized in that, The lower part of the receiving coil also includes a first bracket and a second bracket supported at both ends of the second housing, and the transmitting coil part moves between the first bracket and the second bracket.

10. The magnetic resonance coil assembly as claimed in claim 9, characterized in that, A connecting rod is provided between the first bracket and the second bracket. The connecting rod supports the transmitting coil and the transmitting coil can slide along the connecting rod.

Images