Lightweight low-field permanent magnet full-joint magnetic resonance imaging system and method

Abstract

The light-weight low-field permanent magnet full-joint magnetic resonance imaging system comprises a support and a coil, a magnet is installed on the top of the support, the coil is located in the magnet, and an imaging area is formed in the coil. According to the invention, the magnet with a lightweight design is adopted, so that the weight of the magnet is lightest globally under the same condition, and the production cost, the transportation cost, the installation cost and the operation and maintenance cost of the magnet are reduced; meanwhile, the cost of a magnetic resonance complete machine is reduced; the radio frequency emission and gradient integrated coil is adopted, so that the thickness of the coil is smaller, and the space of a patient is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic resonance imaging, and in particular to a lightweight low-field permanent magnet full-joint magnetic resonance imaging system and method. Background Art

[0002] Magnetic resonance imaging (MRI) system is a commonly used medical imaging device. It uses the nuclear magnetic resonance phenomenon that occurs when hydrogen nuclei (protons) in human tissue are excited by radio frequency pulses in a magnetic field to generate magnetic resonance signals, and then reconstructs the image of a certain level of the human body through electronic computer processing.

[0003] The existing permanent magnet low-field MRI system: the magnet weighs about ten tons, and the production, transportation, installation and maintenance costs are very high, resulting in high sales costs, high hospital examination fees, and increased financial burden on patients; the separation of the RF transmitting coil and the gradient coil results in a smaller patient space, reducing patient comfort; the single-channel analog signal of the spectrometer is easily affected by external interference, resulting in low signal and poor image quality. Summary of the invention

[0004] The object of the present invention is to provide a lightweight low-field permanent magnet total-joint magnetic resonance imaging system and method to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lightweight low-field permanent magnet full-joint magnetic resonance imaging system, comprising a bracket and a coil, wherein a magnet is mounted on the top of the bracket, the coil is located inside the magnet, and an imaging area is formed inside the coil.

[0006] Preferably, the device further comprises a hospital bed, and the coil is fixed on the hospital bed.

[0007] Preferably, the coil is one or more of a head imaging coil, an abdomen imaging coil, a motion joint imaging coil and the like.

[0008] Preferably, radio frequency transmission gradient integrated coils are installed on the top and bottom of the magnet.

[0009] Preferably, it also includes a power amplifier and a spectrometer.

[0010] A lightweight low-field permanent magnet total joint magnetic resonance imaging method, using the lightweight low-field permanent magnet total joint magnetic resonance imaging system; comprising the following steps:

[0011] S1. Place the coil on the bed;

[0012] S2. Place the patient on the bed in a lying position and place the scanned area on the coil;

[0013] S3. The scanned area of ​​the patient is placed in the imaging area to perform magnetic resonance imaging.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Lightweight magnet design: The use of lightweight magnets makes the magnet weight the lightest in the world under the same conditions, and the magnet production cost, transportation cost, installation cost, and operation and maintenance cost are reduced; at the same time, the cost of the entire MRI machine will be reduced.

[0016] 2. Radio frequency gradient integrated coil: The coil integrates radio frequency transmission and gradient, making the coil thickness smaller and increasing the patient space.

[0017] 3. Fully digital fiber optic spectrometer design: The spectrometer with fully digital fiber optic design makes data acquisition faster, reduces signal and data distortion, improves image quality, and enhances the real-time performance of imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the structure of head imaging of the present invention;

[0020] Figure 2 The present invention Figure 1 A schematic diagram of the structure from another perspective;

[0021] Figure 3 It is a schematic diagram of the structure of three-body imaging of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the motion joint imaging of the present invention.

[0023] In the figure: 1. bracket; 2. magnet; 3. coil; 4. radio frequency transmission gradient integrated coil; 5. bed. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0025] See also Figure 1-4 In an embodiment of the present invention, a lightweight low-field permanent magnet full-joint magnetic resonance imaging system includes a bracket 1 and a coil 3. A magnet 2 is installed on the top of the bracket 1, and the coil 3 is located inside the magnet 2. An imaging area is formed inside the coil 3. The coil 3 uses one or more coils such as a head imaging coil, an abdomen imaging coil, and a motion joint imaging coil. The opening of the magnet 2 is kept vertical to the opening direction of the bracket; an imaging area is provided in the magnet 2, and the coil 3 is fixed in the magnet 2 to form the imaging area; the magnet with a lightweight design makes the weight of the magnet the lightest in the world under the same conditions, and the production cost, transportation cost, installation cost, and operation and maintenance cost of the magnet are reduced; at the same time, the cost of the entire magnetic resonance machine will be reduced.

[0026] It also includes a bed 5, and the coil 3 is fixed on the bed 5; a main magnetic field space is provided on the magnet 2, and the scanned part of the patient is placed in the central area of ​​the magnetic field by moving the bed 5 forward and backward.

[0027] The top and bottom of the magnet 2 are both installed with radio frequency emission gradient integrated coils 4; the use of a coil integrating radio frequency emission and gradient makes the coil thickness smaller and increases the patient space.

[0028] It also includes a power amplifier and a spectrometer; the spectrometer uses a fully digital optical fiber design, which makes data acquisition faster, reduces signal and data distortion, improves image quality, and enhances the real-time nature of imaging.

[0029] A lightweight low-field permanent magnet total joint magnetic resonance imaging method, using the lightweight low-field permanent magnet total joint magnetic resonance imaging system; comprising the following steps:

[0030] S1. Place the coil on the bed;

[0031] S2. Place the patient on the bed in a lying position and place the scanned area on the coil;

[0032] S3. The scanned area of ​​the patient is placed in the imaging area to perform magnetic resonance imaging.

[0033] The working principle of the present invention is: placing a receiving coil on a bed; placing a patient on the bed in a lying position, placing the scanned part on the receiving coil; placing the scanned area of ​​the patient in an imaging area, and performing magnetic resonance imaging.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lightweight low-field permanent magnet full-joint magnetic resonance imaging system, comprising a support (1) and a coil (3), characterized in that: A magnet (2) is installed on the top of the bracket (1), the coil (3) is located inside the magnet (2), and an imaging area is formed inside the coil (3).

2. A lightweight low-field permanent magnet all-joint magnetic resonance imaging system according to claim 1, characterized in that: It also comprises a hospital bed (5), on which the coil (3) is fixed.

3. A lightweight low-field permanent magnet total joint magnetic resonance imaging system according to claim 1 or 2, characterized in that: The coil (3) is one or more of a head imaging coil, an abdomen imaging coil, and a motion joint imaging coil.

4. A lightweight low-field permanent magnet all-joint magnetic resonance imaging system according to claim 1, characterized in that: Radio frequency transmission gradient integrated coils (4) are installed on the top and bottom of the magnet (2).

5. A lightweight low-field permanent magnet all-joint magnetic resonance imaging system according to claim 1, characterized in that: Also includes a power amplifier and a spectrometer.

6. A lightweight low-field permanent magnet total joint magnetic resonance imaging method, characterized in that: A lightweight low-field permanent magnet total joint magnetic resonance imaging system according to any one of claims 1 to 5 is used; comprising the following steps: S1. Place the coil on the bed; S2. Place the patient on the bed in a lying position and place the scanned area on the coil; S3. The scanned area of ​​the patient is placed in the imaging area to perform magnetic resonance imaging.

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