Hydrogel patch type respiratory gating magnetic resonance device

Abstract

The hydrogel patch type respiratory gating magnetic resonance device comprises a respiratory gating patch, a pressure signal change receiver, a magnetic resonance main body and an image acquisition workstation, the respiratory gating patch is connected with the pressure signal change receiver; the pressure signal change receiver is connected with the magnetic resonance main body and transmits a pressure change signal to the magnetic resonance main body; the magnetic resonance main body is connected with the image acquisition work station, and the image acquisition work station processes, stores and displays acquired images. The hydrogel patch type respiratory gating magnetic resonance device is simple and feasible in structure, and is adaptive to most of magnetic resonance I (MR I) equipment at present; the device is wide in application range, can be used for patients of different age groups, and even can be used for animal MR examination; under the guidance of a trigger signal, a magnetic resonance main body performs data acquisition at a specific breathing phase so as to reduce artifacts and ambiguity caused by breathing movement, and for a patient needing an interventional operation under magnetic resonance, patch type respiratory gating is convenient for surgical operation and does not affect a surgical area.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a hydrogel patch type respiratory gating magnetic resonance device. BACKGROUND

[0002] The magnetic resonance respiratory gating technology is a method for reducing image artifacts and motion blurring caused by patient breathing by detecting the respiratory wave. The respiratory gating technology can synchronize the imaging acquisition with the respiratory cycle, so that the image acquisition is performed at a specific respiratory phase (usually at the end of inspiration) to obtain clearer and more accurate images.

[0003] Now, the elastic respiratory belt or the respiratory pressure pad is usually used for respiratory wave monitoring. The elastic respiratory belt needs to be tied around the chest and abdomen with appropriate tightness, and the respiratory pressure pad needs to be inserted between the acquisition coil and the abdominal wall. Both of the two traditional magnetic resonance respiratory gating devices use pressure detection sensors. The chest and abdominal wall movement caused by breathing will change the pressure inside the detector. The pressure increases during inspiration, and decreases during expiration. However, the two traditional devices have obvious disadvantages, especially for children and newborns. Because their body surface area is small, the contact area of the materials of the two methods with the body surface is limited, or the sensor signal input is affected because the materials do not contact the body surface well. In addition, the respiratory amplitude of children and newborns is weaker than that of adults, and the pressure sensing signal input is weaker, which affects the magnetic resonance scanning. At the same time, when children or newborns are examined, the elastic respiratory belt or the respiratory pressure pad will reduce the comfort of the child during examination, and easily cause restlessness during examination, thereby affecting the image quality due to examination motion artifacts. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a hydrogel patch type respiratory gating magnetic resonance device to solve the technical problems described in the background.

[0005] A hydrogel patch type respiratory gating magnetic resonance device, characterized in that it comprises a respiratory gating patch, a pressure signal change receiver, a magnetic resonance main body, and an image acquisition workstation; the respiratory gating patch is connected with the pressure signal change receiver; the pressure signal change receiver is connected with the magnetic resonance main body and transmits the pressure change signal to the magnetic resonance main body; the magnetic resonance main body is connected with the image acquisition workstation, and the image acquisition workstation processes, stores and displays the collected images.

[0006] Further, the respiratory gating patch is provided with a pressure sensor patch, and the pressure sensor patch is in contact with the human body.

[0007] Further, the pressure sensor patch is a non-magnetic metal pressure sensor.

[0008] Further, the respiratory gating patch is provided with a couplant hydrogel, and the couplant hydrogel layer is arranged on the bottom surface of the pressure sensor patch.

[0009] Further, the magnetic resonance device with the hydrogel patch respiratory gating is further provided with a signal amplifier, and the signal amplifier is connected to the pressure sensor patch through the processor module.

[0010] Further, the signal processing unit is connected between the signal amplifier and the magnetic resonance host.

[0011] Further, the magnetic resonance host comprises a trigger scanning device, and the trigger scanning device generates and transmits a trigger signal when the respiratory signal shows that the patient is in a predetermined respiratory phase.

[0012] Compared with the prior art, the magnetic resonance device with the hydrogel patch respiratory gating has the advantages and positive effects that: the magnetic resonance device with the hydrogel patch respiratory gating is simple in structure and easy to implement, and is suitable for most current magnetic resonance (MRI) equipment; the application range is wide, and it can be used for patients of different ages, and even can be used for animal MR examination; under the guidance of the trigger signal, the magnetic resonance host performs data acquisition at a specific respiratory phase, so as to reduce artifacts and blurring caused by respiratory motion, and for patients who need to perform interventional surgery under magnetic resonance, the patch respiratory gating is convenient for surgical operation and does not affect the surgical area. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0014] Fig. 1 FIG. 1 is a structural schematic diagram of an embodiment of a hydrogel patch respiratory gating magnetic resonance device.

[0015] Fig. 2 FIG. 1 is a structural schematic diagram of an embodiment of a hydrogel patch respiratory gating magnetic resonance device. DETAILED DESCRIPTION

[0016] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0017] In the description of the utility model, it is understood that the directions or positional relations indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the directions or positional relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0018] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0019] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0020] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0021] As shown in the description Figs. 1-2 :

[0022] The hydrogel patch type respiratory gating magnetic resonance device comprises a respiratory gating patch, a pressure signal change receiver, a magnetic resonance main body and an image acquisition workstation; the respiratory gating patch is connected with the pressure signal change receiver; the pressure signal change receiver is connected with the magnetic resonance main body and transmits the pressure change signal to the magnetic resonance main body; the magnetic resonance main body is connected with the image acquisition workstation, and the image acquisition workstation processes, stores and displays the collected images.

[0023] The working principle of the hydrogel patch type respiratory gating magnetic resonance device is as follows: the collected respiratory signal is transmitted to the pressure signal change receiver, the magnetic resonance main body station processes the pressure change signal, extracts the specific phase of respiration, and is used for real-time analysis to determine when to perform image acquisition; when the respiratory signal shows that the patient is in a predetermined respiratory phase, the system generates a trigger signal to start the image acquisition of the magnetic resonance main body; and the image acquisition workstation processes, stores and displays the collected images.

[0024] In the embodiment, the hydrogel patch type respiratory gating magnetic resonance device is simple in structure and easy to implement, is suitable for most current magnetic resonance (MRI) devices, has a wide application range and can be used for patients of different ages and even animals for MR examination; under the guidance of the trigger signal, the magnetic resonance main body performs data acquisition at a specific respiratory phase to reduce artifacts and blurring caused by respiratory motion; and for patients who need to perform interventional surgery under magnetic resonance, the patch type respiratory gating is convenient for surgical operation and does not affect the surgical area.

[0025] Specifically, the respiratory gating patch is provided with a pressure receptor patch, which is in contact with the human body and is used for collecting the respiratory signal of the patient in real time.

[0026] Specifically, the pressure receptor patch is a non-magnetic metal pressure receptor.

[0027] In the embodiment, the pressure receptor patch is an electronic sensor for measuring the force condition of an object in real time, is a small but very sensitive pressure measuring device, is basically a small elastic deformation unit and is attached with an electrical sensor, can convert pressure into an electrical signal output and perform processing and control, can measure static and dynamic large or small pressure, has the characteristics of high sensitivity, reliability and accuracy, and is embedded in a flexible patch.

[0028] Specifically, the respiratory gating patch is provided with a coupling agent hydrogel, and the coupling agent hydrogel layer is arranged on the bottom surface of the pressure receptor patch.

[0029] A coupling agent is used between the human skin surface and the pressure receptor patch as a hydrogel layer covering the bottom surface of the pressure receptor patch. The coupling agent hydrogel layer is a thin gel material, which is replaced with a new gel patch for each patient examination to ensure sterility and non-invasiveness. In addition, it has the following effects: 1. It makes the patch and the skin more closely, reduces air resistance and noise, and improves the stability and accuracy of the pressure receptor; 2. The coupling agent can lubricate the contact surface of the skin and the pressure patch, reduce friction and resistance, make the patch easier to move and adjust position, and the lubricating texture improves the comfort of the patient.

[0030] Specifically, the hydrogel patch type respiratory gating magnetic resonance device is further provided with a signal amplifier, and the signal amplifier is connected with the pressure receptor patch through the processor module. The signal amplifier amplifies the signal for subsequent processing.

[0031] Specifically, the signal processing unit is connected between the signal amplifier and the magnetic resonance host, used for processing and analyzing the amplified respiratory signal, converting the analog signal into a digital signal, filtering and noise suppression, and generating a trigger signal for gating.

[0032] Specifically, the magnetic resonance host includes a trigger scanning device, which generates and transmits a trigger signal when the respiratory signal shows that the patient is in a predetermined respiratory phase.

[0033] The hydrogel patch type respiratory gating magnetic resonance device disclosed in the present application has the following advantages: (1) flexible material for contact with human skin surface: a flexible coupling agent hydrogel is used as the material for the contact surface of the sensor, which has no irritation and no allergy to the skin, can closely adhere to the patient's skin, adapt to different body types and respiratory states, and ensure the safety and comfort during the examination; (2) miniaturized design: the sensor needs to be small and light enough not to affect the natural breathing of the patient; (3) high sensitivity of the pressure receptor: to ensure that it can accurately capture the small respiratory changes; and through multi-modal signal fusion, the signals from different sensors are fused and processed to extract the most reliable respiratory cycle information; in addition, advanced signal processing algorithms are adopted to filter motion artifacts and other interference signals through noise suppression and filtering, and to improve the signal quality.

[0034] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Also, the specific feature, structure, material or characteristic described can be combined in an appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in the present specification.

[0035] Although the embodiments of the present application have been shown and described above, the above embodiments can be changed, modified, replaced and varied.

Claims

1. A hydrogel patch respiratory-gated magnetic resonance device, characterized by, The application relates to a magnetic resonance device with a breath-gated patch, a pressure signal change receiver, a magnetic resonance main body and an image acquisition workstation. The breath-gated patch is connected with the pressure signal change receiver. The pressure signal change receiver is connected with the magnetic resonance main body and transmits the pressure change signal to the magnetic resonance main body. The magnetic resonance main body is connected with the image acquisition workstation, and the image acquisition workstation processes, stores and displays the collected images.

2. The hydrogel patch respiratory-gated magnetic resonance device of claim 1, wherein, The breath-gated patch is provided with a pressure receptor patch which is in contact with the human body.

3. The hydrogel patch respiratory-gated magnetic resonance device of claim 2, wherein, The pressure receptor patch is a non-magnetic metal pressure receptor.

4. The hydrogel patch respiratory-gated magnetic resonance device of claim 3, wherein, The breath-gated patch is provided with a coupling agent hydrogel, and the coupling agent hydrogel layer is arranged on the bottom surface of the pressure receptor patch.

5. The hydrogel patch respiratory-gated magnetic resonance device of any one of claims 2-4, wherein, The magnetic resonance device with the breath-gated patch is also provided with a signal amplifier which is connected with the pressure receptor patch through a processor module.

6. The hydrogel patch respiratory-gated magnetic resonance device of claim 5, wherein, A signal processing unit is connected between the signal amplifier and the magnetic resonance main body.

7. The hydrogel patch respiratory-gated magnetic resonance device of claim 6, wherein, The magnetic resonance main body comprises a scanning triggering device which generates and transmits a triggering signal when the breath signal shows that the patient is in a predetermined breath phase.

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