Method and device for quantitative evaluation of swallowing function based on image measurement
By setting marking points on the patient's throat and collecting images, and calculating the laryngeal amplitude using image processing technology, the inaccuracy problem of swallowing function evaluation in the prior art is solved, and high-precision swallowing function evaluation and dynamic monitoring are achieved. Promote clinical research and team collaboration.
Patent Information
- Application Number
- CN202411283772.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-01-10
AI Technical Summary
The existing methods of swallowing function evaluation rely on doctors’ subjective judgment and manual measurements. There is inaccuracy and subjectivity, making it difficult to provide accurate quantitative data, especially when specific swallowing function information is required, there is a lack of high-precision evaluation methods.
By setting multiple marking points in the patient's throat, collecting images during swallowing, using image processing technology to identify the position changes of marking points, calculate the amplitude value of the laryngeal lift, and performing visual display, providing a swallowing function based on image measurement Quantitative evaluation methods and devices.
Accurate measurement of the amplitude of laryngeal lift is achieved, subjective errors are avoided, more accurate assessment of swallowing function is provided, dynamic changes can be monitored in real time, data can be recorded and shared, and team collaboration and clinical research are promoted.
Smart Images
Figure CN119279501A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of swallowing function assessment, and in particular to a method and device for quantitatively assessing swallowing function based on image measurement. Background Art
[0002] Swallowing is the process of taking food from the outside through the mouth and transferring it to the stomach through the esophagus. It is one of the most complex behaviors of human beings. According to the anatomical part that the food bolus passes through when swallowing, the swallowing process can be divided into the oral phase, the pharyngeal phase and the esophageal phase. Among them, the oral phase is a voluntary action under the control of the cerebral cortex, also known as the voluntary phase. The pharyngeal phase and the esophageal phase are completed by a series of reflex adjustments controlled by the central nervous system. They are involuntary movements and cannot be stopped at will once they are started.
[0003] The pharyngeal phase is the most critical period of swallowing. The passage of the food bolus through the pharynx lasts only 0.8-1.0 seconds, and aspiration is most likely to occur. During the pharyngeal phase, the lifting of the larynx is a very important step. The lifting of the larynx can close the entrance of the respiratory tract; thicken the base of the epiglottis to assist the closure of the laryngeal vestibule; expand the pharynx; create a vacuum in the pharynx to push the food bolus downward; and relax the cricopharyngeal muscle. In normal people, the lifting range of the larynx is greater than 2 cm, while the lifting range of the larynx of patients with swallowing disorders often does not reach 2 cm.
[0004] At present, there is no special equipment for clinical evaluation of the range of laryngeal elevation, and the examination is mainly carried out through the therapist's manipulation. During the examination, the therapist places his hand under the patient's mandible, spreads his fingers, and gently places the index finger under the mandible, the middle finger on the hyoid bone, the little finger on the thyroid cartilage, and the ring finger on the cricoid cartilage. When the patient swallows, he is asked to feel whether the upper edge of the thyroid cartilage can touch the middle finger to judge the range of laryngeal elevation. If it can be touched, it is judged that the range of laryngeal elevation is greater than 2cm, which is normal. Otherwise, it is judged that the range of laryngeal elevation is insufficient.
[0005] Although this method is simple and easy to use in evaluating swallowing function, the evaluation results are affected to a certain extent by the subjective judgment of the evaluator, so there may be a certain degree of subjectivity between different doctors. Secondly, since the four-finger method relies on the doctor to manually measure the movement distance of the laryngeal lift, there are inaccuracies caused by differences in the doctor's skill level and perception, which makes the evaluation results lack high precision. In addition, the four-finger method is usually a qualitative evaluation method and it is difficult to provide accurate quantitative data. This limits the application of the four-finger method when specific and quantifiable swallowing function information is required. In practical applications, there is still a lack of a more accurate evaluation method to obtain more reliable information on the amplitude of laryngeal lift in swallowing function. Summary of the invention
[0006] The embodiment of the present application provides a method and device for quantitative evaluation of swallowing function based on image measurement, which acquires images of the patient's larynx during the swallowing process, thereby obtaining detailed information on the amplitude of laryngeal lifting, thereby providing a powerful tool for the evaluation of swallowing dysfunction and rehabilitation mechanism research in stroke patients.
[0007] To solve the above technical problems, in the first aspect, an embodiment of the present application provides a method for quantitatively evaluating swallowing function based on image measurement, comprising the following steps: first, setting multiple marking points on the patient's larynx; then, continuously collecting images of the patient's larynx during swallowing; next, processing the collected images, identifying the marking points by color and relative position relationship, and obtaining the position change data of the marking points; finally, based on the position change data of the marking points, calculating the laryngeal lift amplitude value, and displaying it visually.
[0008] In some exemplary embodiments, multiple marking points are set on the patient's larynx, including: fixing the marking point sticker to the patient's larynx; the marking point sticker includes a marking point part and a hollow part, the marking point part includes a central marking point part and an edge marking point part; the hollow part is located in the middle of the marking point sticker, and the edge marking point part surrounds the hollow part; when pasted, the hollow part is located at the patient's thyroid cartilage, the central marking point part is located at the center of the hollow part, and the left and right edges of the marking point sticker are in a vertical state.
[0009] In some exemplary embodiments, the marking point sticker is a hollowed-out circular shape with an overall size of 50 mm × 50 mm; a plurality of marking points are provided on the marking point part, with a spacing of 15 mm to 25 mm between adjacent marking points in the vertical direction and a spacing of 10 mm to 20 mm between adjacent marking points in the horizontal direction.
[0010] In some exemplary embodiments, the central marking point portion is a circle with a diameter of 10 mm, and a marking point is provided at the center of the circle. When pasted, the marking point is located at the upper edge of the patient's thyroid cartilage.
[0011] In some exemplary embodiments, after setting a plurality of marking points on the patient's throat and before continuously acquiring images of the patient's throat during swallowing, the method further includes: performing an image pre-check through image processing software to confirm that the edge of the patient's neck and all pasted marking points can be effectively identified, and marking and displaying the identified edges and marking points on the image with lines and circles.
[0012] In some exemplary embodiments, after the image pre-examination is passed, a camera is used to continuously capture images of the patient's throat during swallowing, and the capture is terminated after the swallowing action is completed. The capture process is expected to take 2s to 3s. During the capture process, the image captured by the camera is observed through a display to ensure that the patient's neck and all landmarks are within the camera's field of view.
[0013] In some exemplary embodiments, during the process of acquiring an image of the patient's larynx during swallowing, an auxiliary lighting fixture is used to illuminate the patient's larynx to ensure image clarity.
[0014] In some exemplary embodiments, the captured images are processed, and the marker points are identified through color and relative position relationship to obtain the position change data of the marker points; each frame of the captured images is analyzed, and the images are first preprocessed by distortion correction and the like, and then the marker points are identified through color and relative position relationship, and finally the position change data of the marker points are obtained through the relative position between the pre-set marker points and the position change of the marker points at the upper edge of the thyroid cartilage during swallowing.
[0015] In the second aspect, the embodiments of the present application also provide a swallowing function quantitative assessment device based on image measurement, which is applied to the swallowing function quantitative assessment method based on image measurement of the above embodiments, including: a marker point sticker; an assessment marker point sticker fixed to the patient's throat; a bracket and a camera and an auxiliary lighting lamp arranged on the bracket; the camera is connected to an image processing unit, and is used to collect images of the patient's throat during swallowing; the image processing unit is used to process the collected images, identify the marker points by color and relative position relationship, and obtain the position change data of the marker points; based on the position change data of the marker points, the laryngeal lifting amplitude value is calculated, and a visual display is performed.
[0016] In some exemplary embodiments, the bracket includes a base, a vertical rod and a horizontal rod; the camera is horizontally mounted on the horizontal rod, and the camera is fixed to the horizontal rod by a camera adjustment mechanism, and can be adjusted in height and horizontally up and down with the horizontal rod to aim the camera at the patient's throat; the auxiliary lighting is horizontally mounted on the side of the camera, and the auxiliary lighting is fixed to the horizontal rod by a lighting adjustment mechanism, and is used to illuminate the patient's neck when the external light is dim.
[0017] The technical solution provided by the embodiments of the present application has at least the following advantages:
[0018] The embodiments of the present application provide a method and device for quantitatively evaluating swallowing function based on image measurement, and the evaluation method includes the following steps: first, setting multiple marking points on the patient's larynx; then, continuously collecting images of the patient's larynx during swallowing; next, processing the collected images, identifying the marking points by color and relative position relationship, and obtaining the position change data of the marking points; finally, based on the position change data of the marking points, calculating the laryngeal lifting amplitude value, and visually displaying it.
[0019] The embodiment of the present application provides a method for quantitative evaluation of swallowing function based on image measurement. On the one hand, the data obtained by the image measurement method of the present application can accurately determine the moving distance of the laryngeal lift, avoid subjective measurement errors, and provide a more accurate swallowing function evaluation. On the other hand, the present application adopts a non-contact image measurement method to evaluate the swallowing function. The patient only needs to stick a marker point on the throat. During the evaluation process, the throat no longer contacts any instrument, which has a good experience and high patient acceptance. In addition, the present application can monitor the dynamic changes of laryngeal lift in real time. Compared with manual measurement, it can collect data at a high frequency and capture the subtle movement changes of the marked part of the throat during swallowing. This is of great significance for studying the dynamic characteristics of swallowing function and rapid feedback on the treatment effect. Finally, the present application can easily realize data storage and sharing. The digital laryngeal lift moving distance data can be recorded, saved, and easily shared with other medical professionals when needed, which promotes teamwork and clinical research. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplifications do not constitute limitations on the embodiments. Unless otherwise stated, the pictures in the drawings do not constitute proportional limitations.
[0021] Figure 1 A schematic diagram of the structure of a swallowing function quantitative assessment device based on image measurement provided in an embodiment of the present application.
[0022] Figure 2 This is a schematic diagram of affixing a marker to a patient's throat provided in an embodiment of the present application.
[0023] Figure 3 A schematic diagram of the location of laryngeal markers to be pasted on a patient provided in an embodiment of the present application.
[0024] Figure 4 This is a schematic diagram of the variation of the laryngeal lifting amplitude over time during a swallowing process provided in an embodiment of the present application. DETAILED DESCRIPTION
[0025] As can be seen from the background technology, the flat-panel cold cathode ray source in the prior art cannot achieve addressable light emission due to the low current and voltage, so further development is needed for its use in CT imaging systems.
[0026] In order to solve the above technical problems, the embodiments of the present application provide a method and device for quantitative evaluation of swallowing function based on image measurement, and the evaluation method includes the following steps: first, multiple marking points are set on the patient's larynx; then, images of the patient's larynx during swallowing are continuously collected; next, the collected images are processed, and the marking points are identified by color and relative position relationship to obtain the position change data of the marking points; finally, based on the position change data of the marking points, the laryngeal lift amplitude value is calculated and visualized. The embodiments of the present application provide a method and device for quantitative evaluation of swallowing function based on image measurement, which obtains detailed information on the laryngeal lift amplitude by collecting images of the patient's larynx during swallowing, thereby providing a powerful tool for the evaluation of swallowing dysfunction and rehabilitation mechanism research in stroke patients.
[0027] The following will describe the various embodiments of the present application in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present application, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solution claimed in the present application can be implemented.
[0028] See also Figure 1 The embodiment of the present application provides a swallowing function quantitative assessment device based on image measurement, including: a marker point sticker; the marker point sticker is fixed to the patient's throat; a bracket 3 and a camera 1 and an auxiliary lighting lamp 2 arranged on the bracket 3; the camera 1 is connected to an image processing unit, and is used to collect images of the patient's throat during swallowing; the image processing unit is used to process the collected images, identify the marker points by color and relative position relationship, and obtain the position change data of the marker points; based on the position change data of the marker points, the laryngeal lifting amplitude value is calculated and visualized.
[0029] Please continue to see Figure 1 The bracket 3 includes a base, a vertical rod and a horizontal rod; the camera 1 is horizontally installed on the horizontal rod, and the camera 1 is fixed to the horizontal rod through a camera adjustment mechanism, and can be adjusted in height and horizontal direction up and down with the horizontal rod to aim the camera at the patient's throat; the auxiliary lighting lamp 2 is horizontally installed beside the camera 1, and the auxiliary lighting lamp 2 is fixed to the horizontal rod through a lighting lamp adjustment mechanism, and is used to illuminate the patient's neck when the external light is dim.
[0030] For example, the camera 1 can be a high-definition camera with a CCD or COMS photosensitive element, with an image resolution of not less than 1080P and a frame rate of not less than 30FPS, and connected to the computer using a USB cable. The camera 1 is internally calibrated and distorted before use, and the relevant parameters are stored in the image processing software for processing the collected images during evaluation.
[0031] The bracket 3 is composed of a base, a vertical rod and a horizontal rod, and is 1.6 meters high. The camera 1 is installed horizontally on the horizontal rod, and can be adjusted up and down with the horizontal rod, with an adjustment range of 0.9 meters to 1.5 meters from the height, and can also be adjusted horizontally, with an adjustment range of 0.1 meters to 0.5 meters from the center vertical rod, so that the camera 1 is aimed at the patient's throat.
[0032] The auxiliary lighting lamp 2 is horizontally installed beside the camera head and can also be adjusted horizontally for illuminating the patient's neck when the external light is dim.
[0033] The computer 4 is a conventional laptop computer, which is connected to the camera 1 via a USB cable, and uses the installed image processing software to collect and analyze images and provide a laryngeal elevation assessment value.
[0034] The swallowing function quantitative assessment device based on image measurement in the embodiment of the present application is applied to the swallowing function quantitative assessment.
[0035] The embodiment of the present application also provides a method for quantitatively evaluating swallowing function based on image measurement, comprising the following steps: first, setting multiple marking points on the patient's larynx; then, continuously collecting images of the patient's larynx during swallowing; next, processing the collected images, identifying the marking points by color and relative position relationship, and obtaining the position change data of the marking points; finally, based on the position change data of the marking points, calculating the laryngeal lift amplitude value and displaying it visually.
[0036] For example, the mark point sticker includes a marking point part and a hollow part. The mark point sticker is as follows: Figure 2 As shown, the marking point part includes an edge marking point part 5 and a center marking point part 6; the hollow part is located in the middle of the marking point sticker, the edge marking point part 5 surrounds the hollow part, and the center marking point part 6 is located in the center of the hollow part when pasting. When pasting, fix the marking point sticker on the patient's throat, as shown in FIG. Figure 3 shown.
[0037] In some embodiments, multiple marking points are set on the patient's throat, including: fixing the marking point sticker to the patient's throat; the marking point sticker includes a marking point part and a hollow part, the marking point part includes an edge marking point part 5 and a center marking point part 6; the hollow part is located in the middle of the marking point sticker, and the edge marking point part 5 surrounds the hollow part; when pasting, the hollow part is located at the patient's thyroid cartilage, the center marking point part 6 is located at the center of the hollow part, and the left and right edges of the marking point sticker are in a vertical state.
[0038] In some embodiments, the marker sticker is a hollowed-out circular shape with an overall size of 50mm×50mm; the marking point portion is provided with multiple markers, with the spacing between adjacent markers in the vertical direction being 15mm to 25mm, and the spacing between adjacent markers in the horizontal direction being 10mm to 20mm. Specifically, the spacing between adjacent markers in the vertical direction is 20mm, and the spacing between adjacent markers in the horizontal direction is 15mm. The marker can be a circular marker, and the marker color can be set to color for prominent display. Figure 2 As shown, there are 10 circular marking points with a diameter of 5 mm distributed around the circular marking point sticker. The color can be set to blue. The relative distance between the marking points and other position information are known, which can be used as the basis for calculating the position change of the marking points described later. It is affixed to the patient's throat before evaluation, and the hollow part in the middle is located at the thyroid cartilage.
[0039] In some embodiments, the central marking point portion 6 is a circle with a diameter of 10 mm, and a marking point is set at the center of the circle. When pasted, the marking point is located at the upper edge of the patient's thyroid cartilage. The marking point set at the center of the circle can be a circular marking point, and the color of the marking point can be set to color in order to highlight the display. Figure 2 As shown, the mark point at the center of the circle can be set to a circular mark point with a diameter of 5 mm, and the color can be set to red.
[0040] In some embodiments, after setting multiple marking points on the patient's throat and before continuously collecting images of the patient's throat during swallowing, it also includes: performing an image pre-check through image processing software to confirm that the patient's neck edge and all pasted marking points can be effectively identified, and marking the identified edges and marking points on the image with lines and circles.
[0041] In some embodiments, after the image pre-examination is passed, the image acquisition start button is clicked, and the camera is used to continuously acquire images of the patient's throat during swallowing, while the patient is prompted to swallow. After the swallowing action is completed, the end button is clicked. The acquisition process is expected to take 2s to 3s. During the acquisition process, the image captured by the camera is observed through the display to confirm that the patient's neck and all landmarks are within the camera's field of view.
[0042] In some embodiments, during the process of acquiring an image of the patient's larynx during swallowing, the patient's larynx is illuminated by an auxiliary lighting fixture to ensure the clarity of the image.
[0043] In some embodiments, the collected images are processed, and the landmarks are identified by color and relative position relationship to obtain the position change data of the landmarks; each frame of the collected images is analyzed, and the images are first pre-processed by distortion correction, and then the landmarks are identified by color and relative position relationship, and finally the position information of the mutual distance between the landmarks on the known paper stickers and the position change of the landmarks at the upper edge of the thyroid cartilage during swallowing are used. Figure 2 As shown, the position change data of the marker points are obtained by acquiring the position change information of the marker points located at the edge marker point part 5 and the position change information of the circular marker points located at the center marker point part 6 during the swallowing process.
[0044] The following is a detailed introduction to the swallowing function quantitative assessment method based on image measurement provided by the present application, in conjunction with the swallowing function quantitative assessment device based on image measurement provided by the present application.
[0045] Step 1: Have the patient to be evaluated sit in front of the camera, and stick a paper-shaped sticker on the patient's throat. When sticking, be sure to place the patient's thyroid cartilage in the center of the hollow part, with the left and right edges basically flush with the neck. Then stick a small round sticker on the upper edge of the patient's thyroid cartilage.
[0046] Step 2: Adjust the camera mounting bracket and the camera and place them about 10 to 20 cm in front of the patient's neck.
[0047] Step 3: Observe the image captured by the camera through a computer to make sure that the patient's neck and all the marking points on the stickers are within the camera's field of view; if the image is dark due to ambient light, turn on the auxiliary lighting to illuminate the patient's throat.
[0048] Step 4: Perform a preliminary image check using the installed image processing software to confirm that the edge of the patient's neck and all the pasted landmarks can be effectively identified, and mark the identified edges and landmarks with lines and circles on the image. If the edge of the neck cannot be identified or is incorrectly identified, the patient's posterior background can be appropriately adjusted; if the landmarks cannot be identified or are incorrectly identified, check whether the landmark stickers have fallen off or are blocked.
[0049] Step 5. After the image pre-examination is passed, click the image acquisition start button and instruct the patient to swallow. After the swallowing action is completed, click the end button. The acquisition process is expected to take 2s to 3s.
[0050] Step 6: The software analyzes each frame of the collected image. First, the image is preprocessed by distortion correction, and then the landmarks are identified by color and relative position. Finally, the laryngeal elevation amplitude is calculated based on the known position information such as the distance between the landmarks on the paper sticker and the position change of the landmarks at the upper edge of the thyroid cartilage during swallowing, and displayed in the software in the form of a curve, as shown in Figure 6. Figure 4 As shown, Figure 4 This is a schematic diagram of the change in the amplitude of laryngeal lifting over time during a swallowing process.
[0051] Based on the above technical scheme, the embodiment of the present application provides a method and device for quantitative evaluation of swallowing function based on image measurement, and the evaluation method includes the following steps: first, multiple marking points are set on the patient's larynx; then, images of the patient's larynx during swallowing are continuously collected; next, the collected images are processed, and the marking points are identified by color and relative position relationship to obtain the position change data of the marking points; finally, based on the position change data of the marking points, the laryngeal lifting amplitude value is calculated and visualized.
[0052] The embodiment of the present application provides a method for quantitative evaluation of swallowing function based on image measurement. On the one hand, the data obtained by the image measurement method of the present application can accurately determine the moving distance of the laryngeal lift, avoid subjective measurement errors, and provide a more accurate swallowing function evaluation. On the other hand, the present application adopts a non-contact image measurement method to evaluate the swallowing function. The patient only needs to stick a marker point on the throat. During the evaluation process, the throat no longer contacts any instrument, which has a good experience and high patient acceptance. In addition, the present application can monitor the dynamic changes of laryngeal lift in real time. Compared with manual measurement, it can collect data at a high frequency and capture the subtle movement changes of the marked part of the throat during swallowing. This is of great significance for studying the dynamic characteristics of swallowing function and rapid feedback on the treatment effect. Finally, the present application can easily realize data storage and sharing. The digital laryngeal lift moving distance data can be recorded, saved, and easily shared with other medical professionals when needed, which promotes teamwork and clinical research.
[0053] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present application. Any person skilled in the art can make their own changes and modifications without departing from the spirit and scope of the present application, so the scope of protection of the present application shall be based on the scope defined in the claims.
Claims
1. A method for quantitative evaluation of swallowing function based on image measurement, characterized in that: The following steps are involved: Set multiple marking points on the patient's larynx; Continuously acquire images of the patient's larynx while swallowing; Process the collected images, identify the marker points by color and relative position relationship, and obtain the position change data of the marker points; Based on the position change data of the landmark points, the laryngeal lift amplitude value is calculated and displayed visually.
2. The method for quantitatively evaluating swallowing function based on image measurement according to claim 1, characterized in that: Place multiple landmarks on the patient's larynx, including: Fix the landmark sticker on the patient's throat; The marking point sticker includes a marking point part and a hollow part, and the marking point part includes a central marking point part and an edge marking point part; the hollow part is located in the middle of the marking point sticker, and the edge marking point part surrounds the hollow part; when pasted, the hollow part is located at the patient's thyroid cartilage, the central marking point part is located at the center of the hollow part, and the left and right edges of the marking point sticker are in a vertical state.
3. The method for quantitative evaluation of swallowing function based on image measurement according to claim 2, characterized in that: The marking point sticker is a circular shape with a hollow middle, and the overall size of the circular shape is 50mm×50mm; the marking point part is provided with multiple marking points, the spacing between adjacent marking points in the vertical direction is 15mm~25mm, and the spacing between adjacent marking points in the horizontal direction is 10mm~20mm.
4. The method for quantitatively evaluating swallowing function based on image measurement according to claim 2, characterized in that: The central marking point part is a circle with a diameter of 10 mm, and a marking point is arranged at the center of the circle. When pasting, the marking point is located at the upper edge of the patient's thyroid cartilage.
5. The method for quantitative evaluation of swallowing function based on image measurement according to claim 1, characterized in that: After setting a plurality of marker points on the patient's larynx and before continuously acquiring images of the patient's larynx during swallowing, the following steps are also included: Perform a preliminary image check using image processing software to confirm that the edge of the patient's neck and all pasted landmarks can be effectively identified, and mark the identified edges and landmarks with lines and circles on the image.
6. The method for quantitative evaluation of swallowing function based on image measurement according to claim 5, characterized in that: After the image pre-examination is passed, the camera is used to continuously capture images of the patient's throat during swallowing. The capture is terminated after the swallowing action is completed. The capture process is expected to take 2s to 3s. During the capture process, the image captured by the camera is observed on the monitor to ensure that the patient's neck and all landmarks are within the camera's field of view.
7. The method for quantitative evaluation of swallowing function based on image measurement according to claim 1, characterized in that: In the process of acquiring images of the patient's larynx during swallowing, the patient's larynx is illuminated by an auxiliary lighting lamp to ensure the clarity of the image.
8. The method for quantitative evaluation of swallowing function based on image measurement according to claim 1, characterized in that: Process the collected images, identify the marker points by color and relative position relationship, and obtain the position change data of the marker points; Each frame of the collected image is analyzed. First, the image is preprocessed by distortion correction, and then the landmark points are identified by color and relative position relationship. Finally, the relative position between the pre-set landmark points and the position change of the landmark point at the upper edge of the thyroid cartilage during swallowing are used to obtain the landmark point position change data.
9. A swallowing function quantitative assessment device based on image measurement, applied to the swallowing function quantitative assessment method based on image measurement as claimed in any one of claims 1 to 8, characterized in that: include: Sign point stickers; During the assessment, the landmark sticker is fixed on the patient's larynx; A bracket and a camera and an auxiliary lighting lamp arranged on the bracket; The camera is connected to the image processing unit and is used to collect images of the patient's throat during swallowing; The image processing unit is used to process the collected images, identify the marker points by color and relative position relationship, and obtain the position change data of the marker points; based on the position change data of the marker points, calculate the laryngeal lifting amplitude value and perform visual display.
10. The swallowing function quantitative assessment device based on image measurement according to claim 9, characterized in that: The bracket includes a base, a vertical rod and a horizontal rod; the camera is horizontally mounted on the horizontal rod, and the camera is fixed to the horizontal rod through a camera adjustment mechanism, and can be adjusted up and down with the horizontal rod and adjusted in the horizontal direction so that the camera is aimed at the patient's throat; The auxiliary lighting lamp is horizontally installed beside the camera head. The auxiliary lighting lamp is fixed on the cross bar through a lighting lamp adjustment mechanism and is used to illuminate the patient's neck when the external light is dim.