Auxiliary positioning device for nuclear magnetic resonance

Abstract

The invention belongs to the technical field of medical images, and particularly relates to a nuclear magnetic resonance assisted positioning device. The nuclear magnetic resonance auxiliary positioning device comprises an examination bed and at least three electric control positioning tracks arranged on the examination bed, at least one positioner is arranged in each electric control positioning track; a rotating ball is arranged on each positioner; each rotating ball is provided with at least two coil clamping grooves used for being matched with coils. The method has the advantages that motion artifacts can be reduced, and the requirements of multi-angle positioning examination and examination of different body positions are met.

Description

Technical Field

[0001] The invention belongs to the technical field of medical imaging, and in particular relates to a nuclear magnetic resonance auxiliary positioning device. Background Art

[0002] As we all know, nuclear magnetic resonance imaging technology uses the principle of nuclear magnetic resonance (NMR). Based on the different attenuation of the released energy in different structural environments inside the material, the emitted electromagnetic waves are detected by applying an external gradient magnetic field to know the position and type of the atomic nuclei that make up the object, and based on this, a structural image of the object's interior can be drawn.

[0003] The medical applications of MRI (magnetic resonance imaging) mainly involve the detection and diagnosis of heart disease, cerebrovascular accidents and vascular diseases; the detection and diagnosis of diseases of the organs in the chest and abdomen; the diagnosis and evaluation, and tracking of tumor conditions and functional disorders. Considering that MRI is widely used in the diagnosis of sports-related injuries, it can present clear images of the soft tissues near and around bones, including ligaments and muscles. Therefore, it is a very sensitive examination for spinal and joint problems. Because MRI does not have the risk of radiation exposure, it is often used in the detection and diagnosis of reproductive system, breast, pelvic and bladder diseases.

[0004] For some lesions, basic MRI detection is not clear enough, so a radio frequency receiving coil is used to enhance the imaging effect. However, due to the different body shapes of the people being examined and the parts that need to be located and examined, a single coil cannot meet the usage requirements.

[0005] At the same time, some people being examined may experience motion artifacts during the test due to pathological or physiological movements, tremors, etc., which may affect the judgment of medical staff.

[0006] Therefore, it is very important to design an MRI-assisted positioning device that can reduce motion artifacts and meet the needs of multi-angle positioning inspections and inspections at different body positions. Summary of the invention

[0007] The present invention aims to overcome the problem in the prior art that the existing basic MRI detection cannot meet the needs of multi-angle positioning inspection and inspection of different body positions, and is easily affected by the person being inspected, resulting in motion artifacts during the detection process, which affects the judgment of medical staff. The present invention provides a nuclear magnetic resonance auxiliary positioning device that can reduce motion artifacts and meet the needs of multi-angle positioning inspection and inspection of different body positions.

[0008] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0009] The nuclear magnetic resonance auxiliary positioning device comprises: an examination bed, at least three electrically controlled positioning rails arranged on the examination bed; at least one positioner is arranged in each electrically controlled positioning rail; each positioner is provided with a rotating ball; each rotating ball is provided with at least two coil clamping grooves for cooperating with the coil.

[0010] Preferably, the positioner comprises a positioner slider located at the bottom and a base arranged on the positioner slider; the rotating ball is installed on the base through a ball bearing; and the positioner moves along the electrically controlled positioning track through the positioner slider.

[0011] Preferably, telescopic fixing rods are provided at both ends of the positioner; the telescopic fixing rods are fixedly connected to the base and are used to make the base slide up and down.

[0012] Preferably, the positioner slider is located between two telescopic fixing rods.

[0013] Preferably, it further comprises a telescopic rod slot; the telescopic rod slot is located below the positioner slider; and the telescopic fixing rod cooperates with the telescopic rod slot.

[0014] Preferably, the coil comprises an upper half coil and a lower half coil; buckles are provided on both ends of the upper half coil and the lower half coil.

[0015] Preferably, the buckle cooperates with the coil slot to fix the coil.

[0016] Preferably, a clamping block is installed in the coil clamping slot via a shaft and a torsion spring; a button is installed in the coil clamping slot via a slide groove and a spring; and the clamping block is moved under the control of the button.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention improves the examination bed, installs at least three positioning tracks on the examination bed, cooperates with at least one positioner in each track, and selects the corresponding coil, so as to meet the enhanced imaging effect of different limbs, such as shoulders, lower limbs, head, etc.; (2) The present invention cooperates with the rotating ball on the positioner to meet the different body positions and more angles of the person being examined, such as knees, ankles or raised calves, etc.; (3) Under the constraints of the left and right ends of the coil and the left and right rotating balls, the irregular tremor and movement of the person being examined can be reduced, and the generation of motion artifacts can be reduced; (4) The positioner in the present invention is equipped with a telescopic fixing rod to reduce the force brought by the upper and lower parts, and the restraint effect is better; (5) The present invention is easy to wear, and the coil is divided into upper and lower parts, which is not easy to hurt the injured patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a nuclear magnetic resonance apparatus;

[0019] Figure 2 for Figure 1 A magnified view of a structure at A in the middle;

[0020] Figure 3 yes Figure 2 A cross-sectional view of

[0021] Figure 4 It is a structural schematic diagram of the telescopic rod slot in the present invention;

[0022] Figure 5 It is a structural schematic diagram of the coil in the present invention;

[0023] Figure 6 It is a structural schematic diagram of the coil slot in the present invention;

[0024] In the figure: an electric control positioning track 1, a telescopic fixing rod 2, a rotating ball 3, a base 4, a telescopic rod slot 5, a coil 6, a buckle 7, a button 8, a coil slot 9, a card block 10, a positioner slider 11, and an examination bed 12. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the embodiments of the present invention, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings and other implementation methods can be obtained based on these accompanying drawings without creative work.

[0026] like Figure 1 The present invention improves the examination bed of the nuclear magnetic resonance apparatus shown in the figure and provides a nuclear magnetic resonance auxiliary positioning device, such as Figure 2 As shown, it specifically includes: an examination bed 12, three electric-controlled positioning rails 1 arranged on the examination bed; each electric-controlled positioning rail is provided with a positioner; each positioner is provided with a rotating ball 3; each rotating ball is provided with at least two coil slots for cooperating with the coil.

[0027] Further, such as Figure 3 As shown, the positioner includes a positioner slider 11 located at the bottom and a base 4 arranged on the positioner slider; the rotating ball is installed on the base through a ball bearing, and the lower half is embedded in the base; the positioner moves along the electric control positioning track through the positioner slider.

[0028] Furthermore, telescopic fixing rods 2 are provided at both ends of the positioner; the telescopic fixing rods are fixedly connected to the base, so as to enable the base to slide up and down as required; and the positioner slider is located between the two telescopic fixing rods.

[0029] like Figure 3 and Figure 4As shown, the present invention further includes a telescopic rod slot 5; the telescopic rod slot is located below the positioner slider; the telescopic fixing rod cooperates with the telescopic rod slot. The telescopic rod slot can also be used as a slide rail, so that the positioner slider can move back and forth on the telescopic rod slot, so as to achieve the purpose of moving the entire positioner to the required area through the positioner slider. The entire sliding process can also be electrically controlled.

[0030] like Figure 5 As shown, the coil 6 includes an upper coil and a lower coil; buckles 7 are provided at both ends of the upper coil and the lower coil. The coil is divided into upper and lower parts, which is not easy to hurt the injured patient. The buckle cooperates with the coil slot to fix the coil.

[0031] like Figure 6 As shown, a clamping block 10 is installed in the coil clamping slot 9 through a shaft and a torsion spring; a button 8 is installed in the coil clamping slot through a slide slot and a spring; and the clamping block is controlled to move by the button. When the coil buckle is inserted into the clamping slot, the hole on the buckle is inserted and clamped by the clamping block. When it needs to be pulled out, press the button to disengage the clamping block from the hole of the buckle and pull out the coil buckle.

[0032] The working mode of the nuclear magnetic resonance auxiliary positioning device of the present invention is as follows:

[0033] First select the locator interface to be installed, insert the lower coil into the coil slot, slide the entire locator to the area to be detected, adjust the position of the telescopic rod and the base, and target different detection areas. After the patient lies down on the examination bed, insert the upper coil into the coil slot, and then start the MRI for detection. The additional coil can enhance the clarity of the detected area, and can provide more detailed MRI examinations of related parts. If the area to be detected is the limbs, the direction of the coil can be adjusted by turning the ball, which has a wider range of applications.

[0034] If the patient has tremors, uncontrolled movements, etc., the coil will restrain the patient's limbs. At the same time, the patient's tremor and movement will be limited by the two rotating balls inserted at both ends of the coil, resulting in inability to move freely, reducing artifacts caused by movement and improving the clarity of the MRI.

[0035] The present invention improves the examination bed, installs at least three positioning tracks on the examination bed, cooperates with at least one positioner in each track, and selects corresponding coils to meet the enhanced imaging effect of different limbs, such as shoulders, lower limbs, head, etc.; the present invention cooperates with the rotating ball on the positioner to meet the different body positions and more angles of the person being examined, such as knees, ankles or raised calves, etc.; the force constrained by the left and right ends of the coil and the restrictions of the left and right rotating balls can also reduce the irregular tremor and movement of the person being examined, and reduce the generation of motion artifacts; the positioner in the present invention is equipped with a telescopic fixing rod to reduce the force brought by the upper and lower parts, and the binding effect is better; the present invention is easy to wear, and the coil is divided into upper and lower parts, which is not easy to hurt the injured patient.

[0036] The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, according to the ideas provided by the present invention, there will be changes in the specific implementation methods, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. A nuclear magnetic resonance assisted positioning device, characterized in that: include: An examination bed and at least three electrically controlled positioning rails arranged on the examination bed; At least one positioner is arranged in each electric-controlled positioning track; each positioner is provided with a rotating ball; each rotating ball is provided with at least two coil clamping grooves for cooperating with the coil.

2. The nuclear magnetic resonance assisted positioning device according to claim 1, characterized in that: The positioner comprises a positioner slider located at the bottom and a base arranged on the positioner slider; the rotating ball is installed on the base through a ball bearing; and the positioner moves along an electrically controlled positioning track through the positioner slider.

3. The nuclear magnetic resonance assisted positioning device according to claim 2, characterized in that: Telescopic fixing rods are provided at both ends of the positioner; the telescopic fixing rods are fixedly connected to the base and are used to make the base slide up and down.

4. The nuclear magnetic resonance assisted positioning device according to claim 3, characterized in that: The positioner slider is located between the two telescopic fixing rods.

5. The nuclear magnetic resonance assisted positioning device according to claim 4, characterized in that: It also includes a telescopic rod slot; the telescopic rod slot is located below the positioner slider; the telescopic fixing rod is matched with the telescopic rod slot.

6. The nuclear magnetic resonance assisted positioning device according to claim 1, characterized in that: The coil comprises an upper half coil and a lower half coil; buckles are arranged on both ends of the upper half coil and the lower half coil.

7. The nuclear magnetic resonance assisted positioning device according to claim 6, characterized in that: The buckle cooperates with the coil slot to fix the coil.

8. The nuclear magnetic resonance assisted positioning device according to any one of claims 1 to 7, characterized in that: A clamping block is installed in the coil clamping slot through a shaft and a torsion spring; a button is installed in the coil clamping slot through a slide groove and a spring; and the clamping block is moved under the control of the button.

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