Receiving coil device and magnetic resonance imaging system

Abstract

The present invention relates to a receiving coil device and a magnetic resonance imaging system, comprising a shell, a support shaft is provided at the top of the shell, a rotating device is provided on the support shaft, a plurality of channels are provided in the shell, including a first channel, a second channel and a third channel, wherein the first channel and the second channel are parallel to each other, the first channel comprises a first body and a first bend connected to the first body, the second channel comprises a second body and a second bend connected to the second body, the first bend is directly opposite to the second bend, and the distance between the first bend and the second bend is greater than the distance between the first body and the second body, the third channel is saddle-shaped, and the third channel is located between the first channel and the second channel. The present invention can improve the imaging effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a receiving coil device and a magnetic resonance imaging system. Background Art

[0002] In current radiotherapy, the commonly used image-guided technology is mainly based on CT, but this method is prone to cause greater radiation damage to patients. Since magnetic resonance imaging has the advantages of being non-invasive, radiation-free, high resolution and high contrast, the use of magnetic resonance imaging technology for guidance can undoubtedly effectively protect the normal tissues of the human body and reduce the damage to patients.

[0003] For radiotherapy, due to the uncertainty of the lesion location, in order to better perform treatment, the radiation beam needs to pass through the receiving coil to reach the lesion location. At the same time, the head of the radiotherapy equipment needs to rotate so that it can better match the tumor location, otherwise the intensity of the radiation reaching the lesion location will be affected, thereby reducing the treatment effect.

[0004] The receiving coil is a magnetic resonance signal receiving component, and its performance has a great impact on the performance of the magnetic resonance imaging system. The existing magnetic resonance receiving coil, whether it is a permanent magnetic resonance system or a superconducting magnetic resonance system, is placed on the bed, and then the part to be scanned is placed in the receiving coil. The receiving coil is basically fixed to the bed or placed on the bed during scanning, and the receiving coil itself will not move. This is not only inconvenient to use, but also has a poor imaging effect, which is not conducive to accurately finding the location of the lesion. Summary of the invention

[0005] To this end, the technical problem to be solved by the present invention is to overcome the problem of poor imaging effect and inability to accurately find the location of the lesion in the prior art, thereby providing a receiving coil device and a magnetic resonance imaging system that can achieve good imaging effect and accurately find the location of the lesion.

[0006] To solve the above technical problems, a receiving coil device of the present invention includes a shell, a support shaft is provided at the top of the shell, a rotating device is provided on the support shaft, a plurality of channels are provided in the shell, including a first channel, a second channel and a third channel, wherein the first channel and the second channel are parallel to each other, the first channel includes a first body and a first bend connected to the first body, the second channel includes a second body and a second bend connected to the second body, the first bend is opposite to the second bend, and the distance between the first bend and the second bend is greater than the distance between the first body and the second body, the third channel is saddle-shaped, and the third channel is located between the first channel and the second channel.

[0007] In one embodiment of the present invention, the third channel includes a third body, a fourth body, a fifth body and a sixth body, and the third body is parallel to the fourth body, the third body is connected to the fifth body, the fourth body is connected to the sixth body, and the fifth body and the sixth body intersect with each other.

[0008] In one embodiment of the present invention, the distance between the first body and the second body is the same as the spacing between the intersections of the fifth body and the sixth body.

[0009] In one embodiment of the present invention, the distance between the first bend and the second bend is the same as the distance between the third body and the fourth body.

[0010] In one embodiment of the present invention, the rotating device is connected to a power generation device.

[0011] In one embodiment of the present invention, a bearing is provided on the support shaft, and the rotating device is installed on the bearing.

[0012] In one embodiment of the present invention, the rotating device, the supporting shaft and the bearing are all made of non-magnetic materials.

[0013] In one embodiment of the present invention, the shell is circular or regular polygonal.

[0014] In one embodiment of the present invention, it further includes a supporting device disposed in the housing, and the supporting device is disposed in the plurality of channels.

[0015] The present invention also provides a magnetic resonance imaging system, comprising any one of the above-mentioned receiving coil devices.

[0016] The above technical solution of the present invention has the following advantages compared with the prior art:

[0017] In the receiving coil device and magnetic resonance imaging system described in the present invention, the first bend is directly opposite to the second bend, and the distance between the first bend and the second bend is greater than the distance between the first body and the second body, which is beneficial to increase the area through which the beam of rays passes and avoid attenuation of the beam of rays. The third channel is saddle-shaped, which is beneficial to ensure uniformity of imaging, and the third channel is located between the first channel and the second channel, so that the multiple channels can be fixed in the shell and rotate with the shell, which is beneficial to the passage of the beam of rays, making the imaging effect more uniform and accurately hitting the lesion position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

[0019] Figure 1 is a schematic diagram of a receiving coil device of the present invention;

[0020] Figure 2 is a schematic diagram of the first channel of the present invention;

[0021] Figure 3 is a schematic diagram of the second channel of the present invention;

[0022] Figure 4 is a schematic diagram of the third channel of the present invention;

[0023] Figure 5 It is a top view of several channels of the present invention.

[0024] Explanation of the reference numerals in the specification: 10 - shell, 11 - support shaft, 12 - rotating device, 13 - first channel, 131 - first body, 132 - first bend, 14 - second channel, 141 - second body, 142 - second bend, 15 - third channel, 151 - third body, 152 - fourth body, 153 - fifth body, 154 - sixth body, 16 - supporting device. DETAILED DESCRIPTION

[0025] Embodiment 1

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a receiving coil device, including a shell 10, a support shaft 11 is provided at the top of the shell 10, and a rotating device 12 is provided on the support shaft 11. A plurality of channels are provided in the shell 10, including a first channel 13, a second channel 14 and a third channel 15, wherein the first channel 13 and the second channel 13 are parallel to each other, the first channel 13 includes a first body 131 and a first bend 132 connected to the first body 131, the second channel 14 includes a second body 141 and a second bend 142 connected to the second body 141, the first bend 132 is opposite to the second bend 142, and the distance between the first bend 132 and the second bend 142 is greater than the distance between the first body 131 and the second body 141, and the third channel 15 is saddle-shaped, and the third channel 15 is located between the first channel 13 and the second channel 14.

[0027] The receiving coil device of this embodiment includes a shell 10, a support shaft 11 is provided at the top of the shell 10, a rotating device 12 is provided on the supporting shaft 11, and the rotating device 12 can rotate freely around the supporting shaft 11, thereby driving the rotation of the shell 10, and a plurality of channels are provided in the shell 10, including a first channel 13, a second channel 14 and a third channel 15, wherein the first channel 13 and the second channel 13 are parallel to each other, the first channel 13 includes a first body 131 and a first bend 132 connected to the first body 131, and a gap can be reserved through the first bend 132 for facilitating the passage of a ray beam to avoid blocking the ray beam, and the second channel 14 includes a second body 141 and a second bend connected to the second body 141 The first bend 132 is directly opposite to the second bend 142, and the distance between the first bend 132 and the second bend 142 is greater than the distance between the first body 131 and the second body 141, which is beneficial to increase the area through which the ray beam passes and avoid attenuation of the ray beam. The third channel 15 is saddle-shaped, which is beneficial to ensure uniformity of imaging, and the third channel 15 is located between the first channel 13 and the second channel 14, so that the multiple channels can be fixed in the shell 10 and rotate with the shell 10, which is beneficial to the passage of the ray beam, making the imaging effect more uniform and accurately hitting the lesion position.

[0028] The third channel 15 includes a third body 151, a fourth body 152, a fifth body 153 and a sixth body 154, and the third body 151 and the fourth body 152 are parallel to each other, the third body 151 is connected to the fifth body 153, the fourth body 152 is connected to the sixth body 154, and the fifth body 153 and the sixth body 154 intersect with each other, so that the formed third channel 15 is saddle-shaped, which is conducive to ensuring the uniformity of imaging.

[0029] In order to ensure imaging uniformity, the distance between the first body 131 and the second body 141 is 10cm-15cm. Preferably, when the distance between the first body 131 and the second body 141 is 13cm, the imaging uniformity is the best. The spacing between the intersection of the fifth body 153 and the sixth body 154 is also 10cm-15cm. Preferably, when the spacing between the intersection of the fifth body 153 and the sixth body 154 is 13cm, the imaging uniformity is the best. At this time, the distance between the first body 131 and the second body 141 is the same as the spacing between the intersection of the fifth body 153 and the sixth body 154.

[0030] like Figure 5 As shown, in order to facilitate the passage of the beam of radiation, the distance between the first bend 132 and the second bend 142 is 20cm-30cm. Preferably, when the distance between the first bend 132 and the second bend 142 is 27cm, the area through which the beam of radiation passes is the largest. The distance between the third body 151 and the fourth body 152 is also 20cm-30cm. Preferably, when the distance between the third body 151 and the fourth body 152 is also 27cm, the area through which the beam of radiation passes is the largest. At this time, the distance between the first bend 132 and the second bend 142 is the same as the distance between the third body 151 and the fourth body 152.

[0031] The rotating device 12 is connected to a power generation device, and the power generation device can drive the rotation of the rotating device 12. A bearing is provided on the support shaft 11, and the rotating device 12 is installed on the bearing. The rotation of the rotating device 12 drives the rotation of the support shaft 11. The rotating device 12, the support shaft 11 and the bearing are all made of non-magnetic materials to avoid affecting the passage of the beam.

[0032] The housing 10 is circular or regular polygonal for easy rotation. When the housing 10 is circular, its diameter is selected to be 27 cm. The first channel 13, the second channel 14 and the third channel 15 are wound with a copper tape with a width of 1 cm and a thickness of 0.4 mm.

[0033] The receiving coil device further includes a supporting device 16 disposed in the housing 10 , and the supporting device 16 is disposed in the plurality of channels. The supporting device 16 is a part of a hospital bed and is used to support a human head.

[0034] Embodiment 2

[0035] This embodiment provides a magnetic resonance imaging system, including the receiving coil device described in Embodiment 1. Since the receiving coil device described in Embodiment 1 is included, the magnetic resonance imaging system also has all the advantages of the receiving coil device.

[0036] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A receiving coil device, characterized in that: The invention comprises a shell, a support shaft is provided at the top of the shell, a rotating device is provided on the support shaft, a plurality of channels are provided in the shell, including a first channel, a second channel and a third channel, wherein the first channel and the second channel are parallel to each other, the first channel comprises a first body and a first bend connected to the first body, the second channel comprises a second body and a second bend connected to the second body, the first bend is directly opposite to the second bend, and the distance between the first bend and the second bend is greater than the distance between the first body and the second body, the third channel is saddle-shaped, and the third channel is located between the first channel and the second channel; the distance between the first body and the second body is 10cm-15cm; the distance between the first bend and the second bend is 20cm-30cm; the third channel comprises a third body, a fourth body, a fifth body and a sixth body, and the third body is parallel to the fourth body, the third body is connected to the fifth body, the fourth body is connected to the sixth body, and the fifth body and the sixth body intersect each other; The distance between the first body and the second body is the same as the distance between the intersection of the fifth body and the sixth body; The distance between the first bend and the second bend is the same as the distance between the third body and the fourth body.

2. The receiving coil device according to claim 1, characterized in that: The rotating device is connected with the power generating device.

3. The receiving coil device according to claim 1, characterized in that: The support shaft is provided with a bearing, and the rotating The device is mounted on the bearing.

4. The receiving coil device according to claim 3, characterized in that: The rotating device, the supporting shaft and the bearing are all made of non-magnetic materials.

5. The receiving coil device according to claim 1, characterized in that: The shell is circular or regular polygonal.

6. The receiving coil device according to claim 1, characterized in that: Also included is a supporting device disposed in the housing, and the supporting device is disposed in the plurality of channels.

7. A magnetic resonance imaging system, characterized in that: A receiving coil comprising any one of claims 1 to 6 device.

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