Method for installing a ct phantom and installation aid system for a ct phantom

Abstract

The method for installing a CT phantom comprises the following steps: an operator wears an AR wearable device to install a mounting unit of the phantom on a bed plate, the mounting unit being the entire phantom or a component constituting the phantom; after the mounting unit is installed, an installation image including the mounting unit and the bed plate is collected through the AR wearable device, and an adjustment image is displayed on the AR wearable device according to the installation image, the adjustment image being superimposed with the mounting unit in the field of view of the operator and used for positioning the mounting unit; and the operator operates the mounting unit according to the adjustment image to complete the positioning. The application also provides an installation assisting system for a CT phantom using the above method.

Description

TECHNICAL FIELD

[0001] The present application relates to a mounting method, in particular a mounting method for a CT phantom. The present application also relates to a mounting auxiliary system for a CT phantom using the above method. BACKGROUND

[0002] The phantom is an important component for CT (Computed Tomography) detection, and the positioning accuracy of the phantom is very high in use. At present, the phantom is usually installed and positioned by professional engineers on site according to experience, which is high in cost and low in efficiency. SUMMARY

[0003] The present application aims to provide a mounting method for a CT phantom, which can simplify the mounting process of the phantom, reduce the operation difficulty, and improve the efficiency.

[0004] Another object of the present application is to provide a mounting auxiliary system for a CT phantom, which can simplify the mounting process of the phantom, reduce the operation difficulty, and improve the efficiency.

[0005] The present application provides a mounting method for a CT phantom, comprising:

[0006] An operator wears an AR wearable device to mount a mounting unit of the phantom on a bed plate, the mounting unit being the entire phantom or a component constituting the phantom;

[0007] After the mounting unit is mounted, an installation image including the mounting unit and the bed plate is collected through the AR wearable device, and an adjustment image is displayed on the AR wearable device according to the installation image, the adjustment image being superimposed with the mounting unit in the field of view of the operator and used for positioning the mounting unit; and

[0008] The operator operates the mounting unit according to the adjustment image to complete the positioning.

[0009] The mounting method for a CT phantom provided by the present application judges the position of the phantom in the mounting process through AR technology, superimposes and displays information for accurate positioning of the phantom in the field of view of the operator, and the operator can quickly correct the position of the phantom to achieve positioning under the indication of the information in the field of view. The method simplifies the mounting process of the phantom, reduces the operation difficulty, and improves the efficiency.

[0010] In another illustrative embodiment of the mounting method for a CT phantom, the AR wearable device is connected to an information processing unit, the information processing unit being capable of receiving the installation image and recognizing the mounting unit and the bed plate on the installation image by using a deep learning algorithm.

[0011] In still another illustrative embodiment of the method for installing a CT phantom, the information processing unit is capable of identifying a plurality of bed structure feature points pre-set on the bed plate from the installation image, and establishing a spatial coordinate system according to the plurality of bed structure feature points. The information processing unit is further capable of identifying a plurality of phantom structure feature points pre-set on the phantom from the installation image, and calculating installation coordinates of the installation unit in the spatial coordinate system according to the plurality of phantom structure feature points. The information processing unit is capable of calculating position offset data of the installation unit according to a pre-set standard coordinate and the installation coordinates, and generating the adjustment image according to the position offset data.

[0012] In still another illustrative embodiment of the method for installing a CT phantom, the content of the adjustment image comprises a correct position indication, a current position indication, and an adjustment indication. The correct position indication is used to mark the correct position of the installation unit. The current position indication is used to mark the current position of the installation unit. The adjustment indication is used to display the difference between the current position indication and the correct position indication, and the adjustment manner.

[0013] In still another illustrative embodiment of the method for installing a CT phantom, the method further comprises demonstrating the installation process of the installation unit to an operator through a VR wearable device before the operator installs the installation unit.

[0014] The present application provides a CT phantom installation assistance system, comprising an AR wearable device and an information processing unit. The AR wearable device is capable of superimposedly displaying images in the field of view of the wearer, and further capable of collecting images in the field of view of the wearer. The information processing unit is capable of receiving installation images of an installation unit of a phantom and a bed plate collected by the AR wearable device, and displaying an adjustment image on the AR wearable device according to the installation images, the adjustment image being superimposedly displayed with the installation unit in the field of view of the wearer and used for positioning the installation unit, the installation unit being the entire phantom or a component constituting the phantom.

[0015] In another illustrative embodiment of the CT phantom installation assistance system, a convolutional network model based on a deep learning algorithm is constructed on the information processing unit, and capable of identifying the installation unit and the bed plate from the installation images.

[0016] In still another illustrative embodiment of the CT phantom installation assistance system, the information processing unit is capable of identifying a plurality of bed structure feature points pre-set on the bed plate from the installation image, and establishing a spatial coordinate system according to the plurality of bed structure feature points. The information processing unit is further capable of identifying a plurality of phantom structure feature points pre-set on the phantom from the installation image, and calculating installation coordinates of the installation unit in the spatial coordinate system according to the plurality of phantom structure feature points. The information processing unit is capable of calculating position offset data of the installation unit according to a pre-set standard coordinate and the installation coordinates, and generating the adjustment image according to the position offset data.

[0017] In another illustrative embodiment of the installation assistance system for CT phantoms, the content of the adjustment image comprises a correct position indication, a current position indication, and an adjustment indication. The correct position indication is used to mark the correct position of the installation unit. The current position indication is used to mark the current position of the installation unit. The adjustment indication is used to show the difference between the current position indication and the correct position indication and the adjustment manner.

[0018] In another illustrative embodiment of the installation assistance system for CT phantoms, the installation assistance system further comprises a VR wearable device, and the information processing unit is capable of connecting the VR wearable device to demonstrate the installation process of the phantom. BRIEF DESCRIPTION OF DRAWINGS

[0019] The following drawings are merely schematic and explanatory and do not limit the scope of the present application.

[0020] Figure 1 Flow chart for an illustrative embodiment of the installation method for CT phantoms.

[0021] Figure 2 Operation schematic diagram for the installation method for CT phantoms.

[0022] Figure 3 Illustrative diagram for superimposed display of the adjustment image in the field of view.

[0023] Figure 4 Illustrative diagram for another superimposed display of the adjustment image in the field of view.

[0024] Figure 5 Flow chart for another illustrative embodiment of the installation method for CT phantoms.

[0025] Figure 6 Structural block diagram for an illustrative embodiment of the installation assistance system for CT phantoms.

[0026] REFERENCE NUMERALS

[0027] 10 AR wearable device

[0028] 20 information processing unit

[0029] 30 VR wearable device

[0030] 40 bed plate

[0031] 50 phantom

[0032] 52 support

[0033] 54 phantom body

[0034] S1 correct position indication

[0035] S2 current position indication

[0036] S3 adjustment indication DETAILED DESCRIPTION

[0037] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described with reference to the accompanying drawings, in which the same reference numbers represent the same or similar components having the same function.

[0038] In this document, "illustrative" means "serving as an example, instance, or illustration," and should not necessarily be construed as preferred or advantageous over other examples. Any example described herein as "illustrative" is intended to be an example provided to enable persons skilled in the art to practice the application, and should not necessarily be construed as preferred or advantageous over other examples.

[0039] For the sake of brevity, the figures of the drawings are only schematically showing parts related to the present application and they do not represent as such the actual structure of products.

[0040] Figure 1 Flow chart of an illustrative embodiment of the method for installing a CT phantom. Figure 2 Schematic diagram of the operation of the method for installing a CT phantom. Refer to Figure 1 and Figure 2 The method for installing a CT phantom comprises:

[0041] Step S20: The operator wears an AR wearable device 10 to install the installation unit of the phantom 50 on the bed plate 40.

[0042] In the illustrative embodiment, refer to Figure 3 and Figure 4 The installation unit is a component of the phantom 50, specifically the bracket 52 and the phantom body 54. In operation, only one component is installed at a time in sequence, for example, the bracket 52 is installed first, and after the subsequent steps are completed to achieve the positioning of the bracket 52, the phantom body 54 is installed, and then the subsequent steps are completed again to achieve the positioning of the phantom body 54. However, it is not limited to this, in other illustrative embodiments, if the phantom 50 is a non-detachable structure, the installation unit can be the entire phantom 50.

[0043] Step S30: After the installation unit is installed, an installation image including the installation unit and the bed plate 40 is collected by the AR wearable device 10, and an adjustment image is displayed on the AR wearable device 10 according to the installation image, the adjustment image is superimposed and displayed with the installation unit in the field of view of the operator and used for positioning the installation unit.

[0044] In the illustrative embodiment, the AR wearable device 10 is connected to an information processing unit 20, which is capable of receiving the installation image and identifying the installation unit and the bed plate 40 on the installation image by using an internally constructed convolution network model based on deep learning algorithm. Further, the information processing unit 20 is capable of identifying a plurality of bed plate structure feature points pre-set on the bed plate 40 according to the installation image, and establishing a three-dimensional spatial coordinate system according to the plurality of bed plate structure feature points. The bed plate structure feature points are usually selected from structural features on the bed plate 40 that are easy to identify in images, such as edges and bending angles, etc. The information processing unit 20 is also capable of identifying a plurality of mold structure feature points pre-set on the mold 50 according to the installation image, and calculating the installation coordinates of the installation unit in the spatial coordinate system according to the plurality of mold structure feature points. The mold structure feature points are usually selected from structural features on the mold 50 that are easy to identify in images, such as edges and bending angles, etc. The information processing unit 20 is capable of calculating the position offset data of the installation unit, such as the offset distance or the offset angle in three dimensions, etc., according to a pre-set standard coordinate and the installation coordinates. The standard coordinate is the coordinate of the accurate position of the installation unit converted into the spatial coordinate system of the bed plate.

[0045] The information processing unit 20 is capable of generating an adjustment image according to the position offset data. Figure 3 And Figure 4 An illustrative diagram of superimposed display of the adjustment image in the field of view, in which the solid line represents the real image in the field of view, and the dashed line represents the adjustment image. Referring to Figure 3 , the content of the adjustment image includes a correct position indication S1 and two adjustment indications S3. The correct position indication S1 is used to mark the correct position of the installation unit for the operator to refer to. One adjustment indication S3 is used to display the difference between the current position indication S2 and the correct position indication, for example Figure 3 The offset distance of the bracket 52 on the flat plate is 2 cm, and the other adjustment indication S3 indicates the adjustment method by means of an arrow, for example Figure 3 The direction of the arrow indicates the direction in which the bracket 52 needs to move. Referring to Figure 4 , the content of the adjustment image includes a correct position indication S1, a current position indication S2, and an adjustment indication S3. The correct position indication S1 is used to display the horizontal indication line position of the mold body 54 after positioning, and the current position indication S2 is used to display the horizontal indication line position of the mold body 54 at present. One adjustment indication S3 is used to display the angle difference of the above two horizontal indication lines as 2.6°, and the other adjustment indication S3 is used to indicate the operation position and operation posture during adjustment by means of a gesture. However, it is not limited thereto, and in actual use, the AR wearable device 10 can display the adjustment image in different ways according to the different viewing angles of the operator, for example, indicating the offset amount of the axis of the mold body 54.

[0046] Step S40: The operator operates the installation unit according to the adjustment image to complete the positioning.

[0047] The method for installing the CT phantom provided by the application judges the position of the phantom 50 in the installation process of the phantom 50 through the AR technology, and superimposes and displays information for accurate positioning of the phantom 50 in the field of view of the operator, so that the operator can quickly correct the position of the phantom 50 according to the indication of the information in the field of view to achieve positioning. The method simplifies the installation process of the phantom 50, reduces the operation difficulty, and improves the efficiency.

[0048] Figure 5 The flow chart of another exemplary embodiment of the method for installing the CT phantom. Referring to Figure 5 , the installation method in the exemplary embodiment is the same as or similar to the installation method shown in Figure 1 , and the difference is that the installation method further includes step S10: demonstrating the installation process of the installation unit to the operator through a VR wearable device 30 before the operator installs the installation unit. The operator can understand and familiarize with the installation process of the phantom 50 through the VR wearable device 30 before actual operation, and can adjust the viewing angle at any time during the demonstration process. Compared with the previous way of reading the operation manual, the VR wearable device 30 can more clearly and visually guide the operator, further reducing the operation difficulty and improving the efficiency.

[0049] The application provides a CT phantom installation auxiliary system. Figure 6 The structural block diagram of an exemplary embodiment of the CT phantom installation auxiliary system. Referring to Figure 6 , the installation auxiliary system includes an AR wearable device 10 and an information processing unit 20. The AR wearable device 10 can superimpose and display images in the field of view of the wearer, and the AR wearable device 10 can also collect images in the field of view of the wearer. The information processing unit 20 can receive the installation image collected by the AR wearable device 10, which includes the installation unit of the phantom 50 and the bed plate 40, and display an adjustment image on the AR wearable device 10 according to the installation image. The adjustment image is superimposed and displayed with the installation unit in the field of view of the wearer and is used for positioning the installation unit, which is the entire phantom 50 or a component of the phantom 50, such as the bracket 52 and the phantom body 54.

[0050] Specifically, the information processing unit 20 is built with a convolution network model based on a deep learning algorithm, which can identify the installation unit and the bed plate 40 according to the installation image. Further, the information processing unit 20 can identify a plurality of bed plate structure feature points pre-set on the bed plate 40 according to the installation image, and establish a spatial coordinate system according to the plurality of bed plate structure feature points. The information processing unit 20 can also identify a plurality of mold structure feature points pre-set on the mold 50 according to the installation image, and calculate the installation coordinates of the installation unit in the spatial coordinate system according to the plurality of mold structure feature points. The information processing unit 20 can calculate the position offset data of the installation unit according to a pre-set standard coordinate and the installation coordinates, and generate an adjustment image according to the position offset data.

[0051] With reference to Figure 3 and Figure 4 , the content of the adjustment image includes a correct position indication S1, a current position indication S2, and a plurality of adjustment indications S3. The correct position indication S1 is used to mark the correct position of the installation unit. The current position indication S2 is used to mark the current position of the installation unit. The adjustment indication S3 is used to display the difference between the current position indication S2 and the correct position indication S1, as well as the adjustment method. However, it is not limited thereto, and in actual use, the AR wearable device 10 can display the adjustment image in different ways according to the different viewing angles of the operator.

[0052] In the illustrative embodiment, with reference to Figure 6 , the installation assistance system further includes a VR wearable device 30, and the information processing unit 20 can connect the VR wearable device 30 to demonstrate the installation process of the mold 50. The operator can understand and familiarize himself with the installation process of the mold 50 through the VR wearable device 30 before actual operation, and can adjust the viewing angle at any time during the demonstration process. Compared with the previous way of reading the operation manual, the VR wearable device 30 can more clearly and vividly guide the operator, further reducing the operation difficulty and improving the efficiency.

[0053] The installation assistance system of the CT mold provided by the present application judges the position of the mold 50 in the installation process of the mold 50 through AR technology, and superimposes and displays information for accurate positioning of the mold 50 in the operator's field of view. The operator can quickly correct the position of the mold 50 to achieve positioning according to the indication of the information in the field of view. This method simplifies the installation process of the mold 50, can reduce the operation difficulty, and improve the efficiency.

[0054] It should be understood that although the present specification is described in terms of various embodiments, not every embodiment need necessarily include every independent technique described herein, and description of a particular feature in a particular embodiment is equally applicable to other embodiments unless specifically stated otherwise. Moreover, it should be understood that the description of a particular embodiment herein can include features that are not present in every embodiment, and features of one embodiment can be used in other embodiments as well. Each embodiment can be used in combination with other embodiments, unless specifically stated otherwise.

[0055] The above detailed description of a series of detailed descriptions is only a specific description of the feasible embodiments of the present application, and is not used to limit the protection scope of the present application. Any equivalent implementation or change made without departing from the spirit of the present application, such as the combination, division or repetition of features, should be included in the protection scope of the present application.

Claims

1. Method of installing a CT phantom, characterized in that, The installation method comprises: an operator wearing an AR wearable device to install a mounting unit of a phantom on a bed board, the mounting unit being the entire phantom or a component constituting the phantom; after the mounting unit is installed, an installation image including the mounting unit and the bed board is captured by the AR wearable device, and an adjustment image is displayed on the AR wearable device according to the installation image, the adjustment image being superimposed with the mounting unit in the field of view of the operator and used for positioning the mounting unit; and the operator operates the mounting unit according to the adjustment image to complete the positioning; the AR wearable device is connected to an information processing unit, the information processing unit being capable of receiving the installation image; the information processing unit being capable of identifying a plurality of pre-set bed board structure feature points on the bed board according to the installation image, and establishing a spatial coordinate system according to the plurality of bed board structure feature points; the information processing unit being further capable of identifying a plurality of pre-set phantom structure feature points on the mounting unit according to the installation image, and calculating installation coordinates of the phantom in the spatial coordinate system according to the plurality of phantom structure feature points, the information processing unit being capable of calculating position offset data of the phantom according to a pre-set standard coordinate and the installation coordinates, and the information processing unit being capable of generating the adjustment image according to the position offset data.

2. The mounting method of a CT phantom according to claim 1, wherein The information processing unit is capable of identifying the mounting unit and the bed board on the installation image by using a deep learning algorithm.

3. The mounting method of a CT phantom according to claim 1, wherein The content of the adjustment image comprises: a correct position indication for marking a correct position of the mounting unit; a current position indication for marking a current position of the mounting unit; and an adjustment indication for displaying a difference between the current position indication and the correct position indication and an adjustment manner.

4. The mounting method of a CT phantom according to claim 1, wherein The installation method further comprises demonstrating an installation process of the mounting unit to an operator by a VR wearable device before the operator installs the mounting unit.

5. Installation aid system for a CT phantom, characterized in that It comprises: an AR wearable device (10) capable of superimposing images in the field of view of the wearer, the AR wearable device (10) being further capable of capturing images in the field of view of the wearer; and an information processing unit (20) capable of receiving an installation image including a mounting unit of a phantom and a bed board captured by the AR wearable device (10), and displaying an adjustment image on the AR wearable device (10) according to the installation image, the adjustment image being superimposed with the mounting unit in the field of view of the wearer and used for positioning the mounting unit, the mounting unit being the entire phantom or a component constituting the phantom. ​ The information processing unit (20) can identify a plurality of bed plate structure feature points pre-set on the bed plate according to the installation image, and establish a spatial coordinate system according to the plurality of bed plate structure feature points; the information processing unit (20) can also identify a plurality of mold structure feature points pre-set on the mold according to the installation image, and calculate installation coordinates of the installation unit in the spatial coordinate system according to the plurality of mold structure feature points; the information processing unit (20) can calculate position offset data of the installation unit according to a pre-set standard coordinate and the installation coordinates; and the information processing unit (20) can generate the adjustment image according to the position offset data.

6. The mounting aid system for a CT phantom according to claim 5, wherein The information processing unit (20) is constructed with a convolution network model based on a deep learning algorithm, and can identify the installation unit and the bed plate according to the installation image.

7. The mounting aid system for a CT phantom according to claim 5, wherein The content of the adjustment image includes: a correct position indication for marking a correct position of the mold; a current position indication for marking a current position of the mold; and an adjustment indication for displaying a difference between the current position indication and the correct position indication and an adjustment manner.

8. The mounting aid system for a CT phantom according to claim 5, wherein, The installation auxiliary system further includes a VR wearable device (30), and the information processing unit (20) can connect the VR wearable device (30) to demonstrate an installation process of the mold.

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