WO2023165527A1

WO2023165527A1 - Positioning method and apparatus for near-infrared brain function imaging device, and storage medium

Info

Publication number: WO2023165527A1
Application number: PCT/CN2023/079065
Authority: WO
Inventors: 邓皓; 汪待发
Original assignee: 丹阳慧创医疗设备有限公司
Priority date: 2022-03-01
Filing date: 2023-03-01
Publication date: 2023-09-07

Abstract

The present application provides a positioning method and an apparatus for a near-infrared brain function imaging device, and a storage medium. The near-infrared brain function imaging device has a head cap, and the head cap is used for being worn on a head of a subject, and has a plurality of probes used for transmitting and/or receiving near-infrared signals or has installation positions for assembling the probes. The positioning method comprises: displaying a three-dimensional brain image on a display interface; in cases where positions are to be measured for the probes or are being measured for the probes, acquiring measurement positions for the probes; and on the basis of the acquired measurement positions for the probes, changing the display angle of view of the three-dimensional brain image, such that the part of the three-dimensional brain image corresponding to the measurement positions is oriented towards a user. The described method enables users to visually observe in real time the position of the current probe measurement point on the three-dimensional brain image without spending extra energy and action to adjust the three-dimensional brain image, such that the related information can be conveniently checked, and the positioning efficiency of the near-infrared brain function imaging device is improved.

Description

Positioning method, equipment and storage medium for near-infrared brain function imaging device

technical field

The present application relates to the field of medical equipment, and more specifically, to a positioning method, equipment and storage medium for a near-infrared brain function imaging device.

Background technique

Near-infrared spectral brain imaging (fNIRS) is a new brain functional imaging technology. Using the multi-channel sensing composed of near-infrared light and transmitting probe-receiving probe, based on the nerve-blood-oxygen coupling mechanism, fNIRS can penetrate the skull to detect and image changes in brain activity activation with high time resolution, and effectively monitor brain function. Visual and quantitative evaluation.

The headgear of the near-infrared brain function imaging device is equipped with a probe for obtaining near-infrared signals. A pair of probes are arranged to form a channel. The location of the brain region, so that it can be determined which brain region's physiological state is specifically represented by the obtained near-infrared data. The current positioning software has few functions, and the operation is cumbersome, not convenient enough to use, and the user experience is poor.

Contents of the invention

The present application is provided to solve the above-mentioned problems existing in the prior art.

There is a need for a positioning method for a near-infrared brain functional imaging device, which can display a three-dimensional brain image on a display interface, and obtain the position of each probe when the position of each probe is about to be measured or is being measured for each probe. Measurement position, changing the display angle of view of the 3D brain image based on the acquired measurement position of each probe, so that the part of the 3D brain image on the display interface corresponding to the measurement position will follow the user in real time during the positioning process, so that the user does not need to spend additional By adjusting the three-dimensional brain image with energy and movement, the positioning of the probe can be observed conveniently at any time, which can significantly improve the positioning efficiency of the near-infrared brain functional imaging device.

According to the first solution of the present application, a positioning method for a near-infrared brain function imaging device is provided, the near-infrared brain function imaging device has a headgear, and the headgear is used to be worn on the subject's head and has multiple A probe for transmitting and/or receiving near-infrared signals, the positioning method includes displaying a three-dimensional brain image on a display interface, when the position to be measured for each probe or when measuring for each probe In the case of position, acquire the measurement position of each probe, and change the display angle of view of the three-dimensional brain image based on the acquired measurement position of each probe, so that the part of the three-dimensional brain image corresponding to the measurement position faces the user.

According to the second solution of the present application, a positioning device for a near-infrared brain function imaging device is provided, the positioning device includes a first positioning component and a first processor, wherein the first positioning component is configured to: Each probe on the headgear of the near-infrared brain function imaging device is positioned to determine the measurement position of each probe; the first processor is configured to: execute the positioning of the near-infrared brain function imaging device in various embodiments of the present application method.

According to the third solution of the present application, a near-infrared brain function imaging system is provided, the near-infrared brain function imaging system includes: a headgear, the headgear is configured to be worn on the subject's head and has multiple Probes for transmitting and/or receiving near-infrared signals or installation positions capable of assembling each of the probes; the second positioning component is configured to: position each probe on the head cap to determine the measurement position of each probe; A second processor, the second processor is configured to: execute the positioning method for a near-infrared brain function imaging device according to various embodiments of the present application.

According to the fourth solution of the present application, there is provided a non-transitory computer-readable storage medium storing a program, the program causes a processor to execute the positioning method for a near-infrared brain function imaging device according to various embodiments of the present application step.

Utilizing the positioning method, equipment, storage medium and near-infrared brain function imaging system for near-infrared brain function imaging devices according to various embodiments of the present application, it can provide positioning information for users during the positioning process of near-infrared brain function imaging devices. Guide instructions, in the process of positioning each probe on the headgear according to the instructions, the three-dimensional brain image on the display interface can keep the part of the probe being measured corresponding to the measurement position on the three-dimensional brain image in a follow-up manner. Facing the user, the user can intuitively and real-time observe the position of the current probe measurement point on the 3D brain image without additional operations such as manually inputting information and manually adjusting the display angle of the 3D brain image. The information is checked, and the positioning efficiency of the near-infrared brain function imaging device is significantly improved.

Description of drawings

In the drawings, which are not necessarily to scale, like reference numerals may depict similar parts in the different views. The same reference number with a letter suffix or a different letter suffix may indicate different instances of similar components. The drawings illustrate various embodiments generally by way of example and not limitation, and together with the description and claims serve to describe the disclosed embodiments. in appropriate When used throughout the drawings, the same reference numerals are used to refer to the same or like parts. Such embodiments are illustrative, and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

Fig. 1 shows a schematic diagram of cooperative operation of a positioning device and a near-infrared brain function imaging device according to an embodiment of the present application.

Fig. 2 shows a flowchart of a first example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application.

FIG. 3( a ) shows a schematic diagram of a display interface of a positioning method for a near-infrared brain function imaging device according to Embodiment 1 of the present application.

FIG. 3( b ) shows a schematic diagram of a display interface of a positioning method for a near-infrared brain function imaging device according to Embodiment 2 of the present application.

Fig. 4 shows a flow chart of a second example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application.

Fig. 5 shows a flow chart of a third example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application.

Fig. 6 shows a flowchart of a fourth example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application.

Fig. 7 shows a schematic diagram of displaying the measurement position of the probe on a three-dimensional brain image via a channel layout grid formed by incomplete mapping according to an embodiment of the present application.

FIG. 8 shows a schematic diagram of a display interface of a positioning method for a near-infrared brain function imaging device according to Embodiment 3 of the present application.

Fig. 9 shows a flowchart of a fifth example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application.

FIG. 10 shows a schematic diagram of a display interface of a positioning method for a near-infrared brain function imaging device according to Embodiment 4 of the present application.

FIG. 11 shows a schematic diagram of a display interface of a positioning method for a near-infrared brain function imaging device according to Embodiment 5 of the present application.

Fig. 12 shows a flowchart of a sixth example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application.

Fig. 13 shows a structural block diagram of a positioning device for a near-infrared brain function imaging device according to various embodiments of the present application.

Fig. 14 shows a block diagram of a near-infrared brain functional imaging system according to various embodiments of the present application.

Detailed ways

Various aspects and features of the present application are described herein with reference to the accompanying drawings.

It should be understood that various modifications may be made to the embodiments of the inventions herein. Accordingly, the above description should not be viewed as limiting, but only as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the general description of the application given above and the detailed description of the embodiments given below, serve to explain the embodiments of the application. principle.

These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment given as non-limiting examples with reference to the accompanying drawings.

It should also be understood that, while the application has been described with reference to a few specific examples, those skilled in the art will be able to implement certain other equivalents of the application.

The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present application are hereinafter described with reference to the accompanying drawings; however, it should be understood that the invented embodiments are merely examples of the present application, which can be implemented in various ways. Well-known and/or repetitive functions and constructions are not described in detail to avoid obscuring the application with unnecessary or redundant detail. Therefore, specific structural and functional details of the invention herein are not intended to be limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any suitable detailed structure. Apply.

This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may refer to the same or one or more of the different embodiments.

An embodiment of the present application provides a positioning method for a near-infrared brain function imaging device. Please note that the positioning method can be implemented via a positioning device, and the positioning device can cooperate with a near-infrared brain function imaging device.

Fig. 1 shows a schematic diagram of cooperative operation of a positioning device and a near-infrared brain function imaging device according to an embodiment of the present application. The complete structure of the near-infrared brain function imaging device 100 is not shown in Fig. 1, and only some components related to positioning are shown. The near-infrared brain function imaging device 100 has at least a head cap 101, and the head cap 101 is used to be worn on an object 107 on the head. For example, headgear 101 may have multiple probes 108 for transmitting and/or receiving near-infrared signals. For another example, the headgear 101 can have a plurality of mounting positions In order to detachably assemble each probe 108 , when in use, the probe 108 can be assembled to the headgear 101 through the mounting position. Wherein, each of the plurality of probes 108 can be configured as a transmitting probe (S) or a receiving probe (D), and each pair of probes arranged in pairs forms a channel, and the line segments connecting SD represent the channels formed by the two. In some embodiments, one transmitting probe can correspond to multiple receiving probes, or conversely, one receiving probe can correspond to multiple transmitting probes. Depends on requirements.

As shown in FIG. 1 , the positioning device 105 may include a positioning component 104 and a processor 102 . Wherein, the positioning component 104 can be configured to position each probe 108 on the headgear 101 of the near-infrared brain function imaging device, and determine the measurement position of each probe. Note that the so-called "positioning each probe 108 on the headgear 101" can directly position (directly locate) each probe 108 assembled on the headgear 101 via the positioning component 104, but it does not necessarily need to be equipped with the probe 108 on the headgear 101 Under the condition that the installation position of the headgear 101 is not yet equipped with the probe 108, the installation position can be positioned, and the measurement position of the installation position can be used as the measurement position of the probe 108 for assembly, so as to realize the correspondence via the installation position. Indirect positioning of the probe 108 (indirect positioning). For convenience of description, direct positioning is taken as an example for illustration.

The processor 102 may be configured to execute a positioning method for a near-infrared brain function imaging device according to various embodiments of the present application. In some embodiments, the positioning device 105 may also include a memory 103 and a display 106 . Wherein, the memory 103 is configured to store a positioning program for the processor 102 to execute the flow of the positioning method and data generated and/or required during the execution, and may also store the measurement positions of each probe determined via the positioning component 104 . In some embodiments, the memory 103 may be configured to store the measured positions and/or mapped positions of the respective probes 108 in association with the respective probes 108 . Specifically, the memory can only store the measurement position or the mapping position of each probe 108 associated with each probe 108, and it can also store both. When a probe that has passed (that is, the measured position and/or mapped position has been stored) performs an instruction operation for repositioning, it is sufficient to obtain the historical position information of the probe.

Specifically, the positioning component 104 may adopt various implementation manners. For example, as shown in Figure 1, the positioning component 104 may include a magnetic source 104b and a detection pen 104a capable of generating an orthogonal magnetic field in a three-dimensional space, wherein the detection pen 104a contains a moving magnetic sensor, so the magnetic source 104b and the detection pen 104a may The measurement position of the probe 108 is determined by detecting the magnetic interaction between the two pens 104a, which will not be described in detail here. When in use, the magnetic source 104b can be placed on the fixed bracket, and each probe 108 on the head cap 101 can be positioned by using the detection pen 104a, and when the measurement position of the probe 108 is determined, press the detection button The button on the pen 104a sends the measurement position data of the probe 108 to the processor 102 by the positioning component 104 for processing. This is only an example, and the implementation of the positioning component 104 is not specifically limited in this application. For the convenience of description, the description of the positioning method will be described below using the positioning assembly 104 with the structure shown in FIG. 1 .

In some other embodiments, the user can also perform various interactive operations for positioning through other interactive components (not shown) such as touch screen buttons, mouse, keyboard, trackball, gesture sensing components, etc. The interactive operations can be click, stay, etc. Wait for the specified operation.

In some embodiments, the display 106 can be configured to display a three-dimensional brain image on its display interface under the control of the processor 102, wherein the three-dimensional brain image is constructed based on a three-dimensional brain model, and the three-dimensional brain model can be based on the object The head medical image data can be obtained, for example, the brain MRI image of the subject, or the existing brain atlas data, such as ICBM152 atlas, can be obtained, which is not specifically limited in this application. In some embodiments, the display 106 may use LEDs, OLEDs, etc., which will not be repeated here.

In some embodiments, processor 102 may be a processing device including one or more general-purpose processing devices, such as a microprocessor, a central processing unit (CPU), a graphics processing unit (GPU), and the like. More specifically, the processor may be a Complex Instruction Set Computing (CISC) microprocessor, a Reduced Instruction Set Computing (RISC) microprocessor, a Very Long Instruction Word (VLIW) microprocessor, a processor running other instruction sets, or A processor that runs a combination of instruction sets. The processor may also be one or more special-purpose processing devices, such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), system-on-chips (SoCs), and the like. The processor 102 may be configured to execute a positioning method for a near-infrared brain function imaging device according to various embodiments of the present application.

A positioning method for a near-infrared brain function imaging device according to an embodiment of the present application will be described in detail below with reference to FIG. 2 , FIG. 3( a ) and FIG. 3( b ). Fig. 2 shows a flowchart of a first example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application. Fig. 3(a) and Fig. 3(b) show a schematic view of a display interface of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application.

As shown in FIG. 2, when the user wants to position the near-infrared brain function imaging device, the three-dimensional brain image can be displayed on the display interface (step 201). As mentioned above, the three-dimensional brain image is constructed based on the three-dimensional brain model. In some embodiments, before positioning starts, the orientation of the three-dimensional brain image can be any direction, or a default direction predefined by the user or the system. Preferably, the three-dimensional brain image The forehead portion of the image faces the user to correspond to the direction of the subject's forehead when the headgear is correctly worn for easy viewing by the user.

Next, if the position is to be measured for each probe or if the position is to be measured for each probe, the measurement position of each probe is acquired (step 202 ). It should be noted that, in this application, when the position of each probe is to be measured, it can be understood that when the position of each probe is to be measured, or when the position of the probe needs to be re-measured, it is intended to indicate that the position of the probe is not yet in place. The actual measurement phase of the position may be a preliminary phase before the actual measurement. There are various ways to let the processor know that the position is to be measured or is being measured for each probe. For example, the starting state of the positioning component, or some operations on the detection pen containing the mobile magnetic sensor (such as holding, moving, touching the probe or the installation position), or the user performs the command on the display interface to indicate that the position of each probe is to be measured. Operations (such as but not limited to performing instruction operations such as mouse click or touch screen selection on the identification part of the probe) can be sent to the processor as instruction information to measure the position of each probe, so that the processor knows that the position to be measured for each probe up. In the case of measuring the position of each probe, the acquired measurement position of each probe is not the current measurement position (actual measurement is not currently performed), but may be the latest or representative measurement position of each probe stored. For example, some operations on the detection pen containing the mobile magnetic sensor in the positioning component (such as a specific operation track, touching the probe or installation position, pressing a button to send the measured position obtained by positioning) can be used as the position measurement for each probe. An indication is passed to the processor so that the processor knows that the position is being measured for each probe. In the case that the positions of the respective probes are being measured, the measured positions of the probes measured by the current positioning are the acquired measured positions of the respective probes. Specifically, the specified operation of the user using the detection pen to measure points of each probe on the headgear may be received, wherein the positions of the measuring points of each probe are used to represent the measurement positions of each probe on the head. In response to the user specifying the measurement points of each probe on the headgear with the detection pen, the measurement position of each probe can be determined by using the positioning component as the acquired measurement position of each probe.

Then, change the display angle of view of the three-dimensional brain image based on the acquired measurement position of each probe, and adjust from the current display angle to make the part of the three-dimensional brain image corresponding to the measurement position face the user (step 203). Note that "the part of the three-dimensional brain image corresponding to the measurement position" is intended to indicate the part of the three-dimensional brain image corresponding to the measurement position, which may be directly corresponding or indirectly corresponding. For example, the portion of the three-dimensional brain image containing the measurement location may be directed toward the user (directly corresponding example). In some other embodiments, not limited to the measurement position of the probe, other representative positions may be calculated or derived based on the measurement position, and the display angle of the three-dimensional brain image may be changed according to the representative position information of the probe, Adjust from the current display viewing angle so that the part of the 3D brain image containing the representative location faces the user (an example of indirect correspondence).

As shown in Figure 3(a), when the receiving probe D12 is positioned to obtain the measurement position data of D12, the display angle of view of the three-dimensional brain image is the right temporal part corresponding to D12, as shown in Figure 3(b), in the When receiving the probe D14 for positioning and obtaining the measurement position data of D14, the three-dimensional brain image adjusts the display angle of view to the forehead corresponding to D14 based on the measurement position data. In this way, during the positioning process, the three-dimensional brain image on the display interface can be The moving method keeps the part of the probe being measured that corresponds to the measurement position on the 3D brain image always facing the user, so that the user can intuitively and real-time without additional operations such as manual input of information and manual adjustment of the display angle of the 3D brain image. The corresponding position of the current probe measurement point on the three-dimensional brain image can be accurately observed, so that the relevant information can be checked conveniently, and the positioning efficiency can be significantly improved.

The following uses the mapped position as an example of the representative position for illustration, but it should be noted that the representative position is not limited to the mapped position, and other derived representative positions may also be selected according to user requirements.

As shown in FIG. 4 , step 401 is the same as step 201 in the flow chart shown in FIG. 2 , and step 402 is the same as step 202 in the flow chart shown in FIG. 2 , so details are not repeated here. However, in this example, if the measurement positions of the probes are obtained in step 402, then in step 403, the measurement positions of the probes can be mapped to the three-dimensional brain model to determine the mapping positions of the respective probes, wherein, The three-dimensional brain model is used to construct and form a three-dimensional brain image, so as to be displayed to the user on a display interface.

Next, in step 404, the display viewing angle of the 3D brain image may be further changed according to the determined mapping positions of the probes, from the current display viewing angle so that the part where the corresponding mapping position of the 3D brain image is located faces the user.

Specifically, after obtaining the measurement position of the probe, the measurement position can be mapped to the three-dimensional brain model, that is, mapped from the actual three-dimensional space to the space of the three-dimensional brain model. After obtaining the mapping position of the probe, The 3D brain image constructed by the 3D brain model adjusts the current display viewing angle to the part where the mapping position is located, so that the user can see the mapping position of the probe on the 3D brain image in time during the positioning process, so as to pass through the mapping position Judging the condition of the probe, for example, whether the position of the brain area corresponding to the probe is wrong, whether the headgear is worn correctly, the degree of deviation between the position of the brain area corresponding to the probe and the expected position, etc. By mapping the measured position of the probe to the 3D brain model, and adjusting from the current display viewing angle so that the part of the 3D brain image where the mapped position is facing the user, the mapped position will fit on (or be immediately adjacent to) the 3D brain model rather than deviate significantly A three-dimensional brain model, so that users can more accurately grasp the relative relationship between the probe and the three-dimensional brain model.

Specifically, various ways may be used to change the display angle of view of the three-dimensional brain image according to the determined mapping positions of the respective probes.

Specifically, the above process may include: first determining the reference point on the three-dimensional brain image and the observation point of the human eye, connecting the reference point and the observation point of the human eye to form a reference line, setting the azimuth of the reference line to 0°, and then , based on the first mapping position to be used to adjust the orientation of the three-dimensional brain image and the reference point on the three-dimensional brain image, determine the first connecting line, and calculate the azimuth between the first connecting line and the reference line, that is, the first azimuth . In some embodiments, based on the first azimuth, the display angle of the three-dimensional brain image can be turned to the orientation of the first mapping position, so that the three-dimensional brain image can automatically and real-time rotate following the change of the measurement point, so that the user can During the positioning process, the mapping position of the current probe measurement point on the brain can be observed in real time.

In some embodiments, when the part of the three-dimensional brain image corresponding to the measurement position is facing the user, the measurement position (or a representative position such as a mapping position) can also be marked on the three-dimensional brain image, so that the positioning process is more visualized and easier. understanding, while allowing the user to easily check the position of the probe.

How to obtain the measurement position of the probe and how to change the display angle of the three-dimensional brain image accordingly will be described in detail below in conjunction with Fig. 5 and Fig. 6 .

Fig. 5 shows a flow chart of a third example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application. The specific process of updating the position of the probe will be described below with reference to the third example.

In the third example as shown in Figure 5, step 501, step 502 and step 503 are respectively the same as the operations in step 401, step 402 and step 403 as shown in Figure 4, and only focus on subsequent step 504-step 506 for description.

Since the near-infrared brain function imaging device according to the embodiment of the present application can also have a memory, after the measurement position and the mapping position of each probe are obtained in step 502 and step 503 respectively, in some embodiments, it can be used as needed with Each probe stores a corresponding first measured position and/or first mapped position in association (step 504). In some embodiments, for example, when the second measurement position of each probe obtained by detecting the click operation of the probe on the head cap by the user is obtained, and/or the second measurement position obtained by applying various mapping algorithms according to the second measurement position During two mapping positions, and/or other representative positions (such as the second representative position), the content stored in the memory can be updated, that is, the second measurement position and/or the second mapping position can be used to replace the stored corresponding to the first measurement location and/or first mapped location (step 505). In some embodiments, the display angle of the 3D brain image may be further changed according to the updated second mapping position, and adjusted from the current display angle so that the part where the second mapping position of the 3D brain image is located faces the user (step 506).

Fig. 6 shows a flowchart of a fourth example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application. The specific process of adjusting the viewing angle of the three-dimensional brain image based on the stored position of the probe will be described below with reference to the fourth example.

In the fourth example shown in Fig. 6, not only the three-dimensional brain image is displayed on the display interface, but also the identification parts of each probe can be displayed (step 601), as shown in Fig. 3(a) and 3(b), the display interface The SD layout diagram is displayed on the left area of the , which includes the identification part of each probe and the channel layout grid formed between the probes. The first probe is taken as an example. When receiving the user’s instruction operation on the identification part of the first probe on the display interface, such as mouse click or touch screen selection (step 602), in response to the instruction operation, the first probe in the memory can be obtained. Store the measurement position and/or mapping position of the first probe in association (step 603), and change the display angle of view of the three-dimensional brain image according to the determined mapping position of the first probe, and adjust from the current display angle to make the three-dimensional brain image The portion of the image where the mapped position of the first probe is located faces the user (step 604). That is to say, even if the user does not operate the measuring points of the probe on the headgear through the detection pen, when the user instructs the probe on the display interface, such as the probe identification part on the SD layout map, the three-dimensional brain on the display interface The image can still follow the display angle of view only according to the historical data corresponding to the positioning data of the probe stored in the memory. In addition, it should be noted that when only the measurement position of the first probe is stored in the memory without storing the mapping position, steps similar to those in step 403 in FIG. 4 can be adopted to map the measurement position of the first probe acquired from the memory to To construct a three-dimensional brain model for forming a three-dimensional brain image, so as to determine the mapping position of the first probe, and then perform step 604 so that the part of the three-dimensional brain image where the mapping position of the first probe is located faces the user.

It can be understood that the above-mentioned mapping of the measurement position to the three-dimensional brain model includes incomplete mapping and complete mapping, wherein the incomplete mapping refers to the relative positional relationship between the measurement positions of the various probes when mapped onto the three-dimensional brain model No change, that is, the channel layout grid formed between the actual measurement positions of the individual probes is not deformed when it is not completely mapped onto the three-dimensional brain model.

In some embodiments, in addition to obtaining the measurement position, mapping position or other representative position of each probe, the processor can also obtain other information, such as the layout information of the channels between the probes, and based on the obtained channel between the probes The layout information of each probe is determined using the mapping bit position to form a channel layout grid, so that the channel layout grid and the position of the aforementioned probe can be further displayed on the three-dimensional brain image. Specifically, when the measurement position is completely mapped to the 3D brain model, the user can judge the actual corresponding brain region position of each channel according to the channel layout grid formed by the complete mapping position of each probe, and when the measurement position is not completely mapped to the When in the three-dimensional brain model, the user can judge whether the positioning of each probe is wrong according to the channel layout grid formed by the incomplete mapping position of each probe. In a specific embodiment, as shown in Figure 3 (a) and Figure 7, as In the SD layout diagram shown in Figure 3(a), it can be seen that the channel layout grid formed between the four probes S1, D1, D6, and S7 is rectangular, while the channel layout grid shown in Figure 7 through incomplete mapping The channel layout grid formed is non-rectangular. According to the grid shape of the channel layout, the user can clearly see that the S7 deviates from the preset position. Based on this, it can be judged that the positioning of the probe S7 is wrong and needs to be repositioned. .

In some embodiments, the incompletely mapping the acquired measurement positions of each probe to the three-dimensional brain model specifically includes: performing adaptive transformation on the measurement installation positions of each probe for the three-dimensional brain model, The included angle between the lines for measuring the installation position is consistent with the angle between the lines for the corresponding transformed position, so as to determine the transformed position of each probe. For the convenience of description, this application also refers to this adaptive transformation that keeps the angle between the lines constant as "non-mapping" (the obtained position is also called "non-mapping position"), to be compared with The "mapping" of the three-dimensional brain model for matching alignment (the resulting positions are also referred to as "mapped positions") is distinguished.

The transformed positions of the respective probes can then be shown relative to the three-dimensional brain image markers. As shown in Figure 8, as an example, the first connection line of the transformed position of probe D12-probe S7, the second connection line of the transformed position of probe D6-probe S7, and the transformation of probe D6-probe S1 are shown. The third connection line of the rear position, the fourth connection line of the transformed position of the probe S1-probe D1, and the fifth connection line of the transformed position of the probe D1-probe S7, correspondingly, the first connection line and the first connection line are shown. The angle a between the two connecting lines, the angle b between the second connecting line and the third connecting line, the angle c between the third connecting line and the fourth connecting line, the angle c between the fourth connecting line and the fifth connecting line Angle d. Before the adaptive transformation, the angle between the connection line of the probe D12-the measurement installation position of the probe S7 and the connection line of the probe D6-probe S7 measurement installation position is also a, and the measurement installation position of the probe D6-probe S7 The included angle between the connection line of the probe D6-the measurement installation position of the probe S1 is also b, and the angle between the connection line of the probe D6-probe S1 measurement installation position and the connection line of the probe S1-probe D1 measurement installation position The included angle is also c, and the included angle between the line connecting the measuring installation position of probe S1-probe D1 and the connecting line connecting probe D1-probe S7 measuring installation position is also d. By keeping the included angle between the connecting lines of the measurement installation positions of each probe consistent with the included angle between the corresponding transformed positions, the transformed positions of the marked probes are made close to the three-dimensional brain The image is more convenient for users to compare and view, and at the same time, the angle formed by the connection of the probes that reflects whether each probe is wrong is preserved without distortion, so that the user can accurately determine whether each probe is positioned incorrectly. For example, as shown in Figure 8, the quadrilateral formed by the line connecting the probe D6-probe S7-probe D1-probe S1 after the transformation is not a rectangle, and the angles b, c, and d are not right angles, which proves that the probe D6-probe S7 -The quadrilateral formed by the actual measurement installation positions of the probe D1-probe S1 is not a rectangle either. If according to the correct layout of the channels between the probes, the quadrilateral formed by the actual measurement installation positions of probe D6-probe S7-probe D1-probe S1 is a rectangle, then the user can accurately judge based on the positioning and presentation results shown in Figure 8 At least the probe S7 obviously deviates from the preset position, the positioning is wrong, and it needs to be repositioned.

In this way, not only can the user use the three-dimensional brain model in the three-dimensional brain image as a reference on the interface, but also show the positioning of each probe in comparison with the logo, and by making the angle between the lines measuring the installation position and the corresponding transformed position The included angles between the lines are kept consistent, and the spatial geometric characteristics that are especially important for the positioning of the probes are reserved for the positioning of each probe in the comparison mark---the included angle, so that the user can easily check the positioning of each probe on the interface. , Correctly and efficiently evaluate and grasp the positioning status of each probe. Moreover, the transformed position of each probe is displayed relative to the three-dimensional brain image, so that the user can not only view the positioning status of the probe during the positioning process, but also judge the position of the transformed position of each probe relative to the three-dimensional brain image, and the visualization effect is better. , and enable the user to obtain more positioning information and improve work efficiency. As shown in Figure 8, the user can directly observe from the figure that several probes such as D6 and S1 are located at the right temporal part of the subject. In another embodiment, each brain region of the three-dimensional brain image can also be marked, for example, different brain regions are distinguished by text, different colors, etc., so as to further facilitate the user to judge the relative position of each probe after transformation relative to the three-dimensional brain region. The location of the image.

As shown in FIG. 9 , the following steps may be used to perform adaptive transformation for the three-dimensional brain model on the acquired measurement installation positions of each probe.

In step 701, a first position of a first set of reference points on the subject's head and a second position of a corresponding second set of reference points set on the three-dimensional brain model may be acquired. Usually, each set of reference points is at least 3.

In step 702, based on the first position of the first set of reference points and the second position of the second set of reference points, a scaling factor, translation factor and rotation factor in each coordinate direction may be determined. Taking the XYZ three-dimensional coordinate system as an example, each reference point is a three-dimensional coordinate. In each dimension direction of the X-axis direction, the Y-axis direction and the Z-axis direction, a zoom factor, a translation factor and a rotation factor are respectively obtained. transfer factor.

In step 703, a single representative scaling factor may be determined based on the scaling factors in the respective coordinate directions. For example, a single representative scaling factor may be obtained by averaging three scaling factors in the X-axis direction, the Y-axis direction, and the Z-axis direction, but is not limited thereto. In some embodiments, the median of the three scaling factors may be chosen as the single representative scaling factor.

In step 704, the transformation of each probe can be determined in each coordinate direction based on the determined measurement installation position of each probe using the single representative scaling factor and the translation factor and rotation factor corresponding to the coordinate direction. back position.

In this way, the measurement installation position of each probe is proportionally scaled in each coordinate direction, so that the angle between the lines connecting the measurement installation positions is consistent with the angle between the lines connecting the corresponding transformed positions.

In some embodiments, the single representative scaling factor comprises an average of the scaling factors in the respective coordinate directions.

In some embodiments, the layout information of the channels between the probes can be acquired; based on the determined transformed position of each probe, the acquired layout information of the channels between the probes is used to form a channel layout grid; relative to the three-dimensional The brain image shows the channel layout grid, as shown in Figure 10, the channel layout grid can be composed of probe D12, probe S12, probe D13, probe S13, probe D14, probe D6, probe S7, probe D7, probe S8, probe D8, probe D1, probe S2, probe D2 and probe S3 are connected. Then, after using various embodiments of the present application to carry out adaptive transformation on the measurement installation positions of each probe, the channel layout grid presented on the three-dimensional brain image has no difference with respect to the real channel layout grid formed between the probes on the headgear. any deformation. In this way, the real channel layout grid is presented on the 3D brain image and the position of the probe on it is close to the 3D brain model, so that the user can intuitively judge the positioning of the probe quickly and accurately through the shape of the channel layout grid In addition, it is possible to intuitively grasp the brain regions corresponding to each probe position. For example, whether the probe is positioned incorrectly, the degree of deformation of the headgear, etc. For example, the channel formed between four adjacent probes is theoretically rectangular, but when positioning, the user finds that there is an inner angle in the presented graphics that is much smaller than 90°, and it can be judged that the probe located at this inner angle is positioned properly. error, it needs to be repositioned.

In some embodiments, the acquired measured installation positions of the probes can be mapped to the three-dimensional brain model to determine the mapped positions of the probes; and the mapped positions of the probes can be displayed on the three-dimensional brain image. The non-mapped position, which does not cause any deformation, preserves the angle but does not strictly match the measured mounting position of the probe to the 3D brain model, sometimes with drilling into the 3D brain model or floating In the case of a three-dimensional brain model, if the deviation is too large, it will interfere with the user's judgment of the corresponding relationship between the probe and the brain area. By determining the mapping position of each probe and strictly matching the mapping position of the three-dimensional brain model in the three-dimensional brain image, it can assist the user to accurately grasp the corresponding relationship between the probe and the brain region.

In some embodiments, the positioning method may further include: displaying an SD layout diagram on the display interface in a display area other than the three-dimensional brain image, and the SD layout diagram carries and identifies each probe and the probe The layout information of the channel between. For example, as shown on the left side of FIG. 11 , it can be seen that the probe S7 and the probe D12 , the probe D7 , the probe D6 and the probe D1 respectively form channels with each other. As an example, FIG. 11 shows the layout information of the channels between the probes in a grid form, but it is not limited thereto, and the layout information of the channels between the probes may also be shown in a list, text, table and the like.

In some embodiments, the transformed position of each probe, the mapped position, and the channel layout grid may be displayed on the three-dimensional brain image. In this way, without the user switching interfaces back and forth, more positioning information can be obtained from the same interface, improving the visualization effect of the positioning process, thereby improving the user's work efficiency.

The transformed positions, mapped positions and channel layout grids of each probe can be displayed together on the three-dimensional brain image in various ways. For example, the same display interface can be partitioned to display the transformed position of the probe on the 3D brain image, the mapped position of the probe on the 3D brain image, and the channel layout grid on the 3D brain image in each partition.

In some embodiments, any one of the following methods or a combination of several methods can be used to display the transformed positions, mapped positions and channels of each probe in the same 3D brain image (that is, refer to the same 3D brain model) Layout grid.

For example, at least one of the mapped position, the transformed position and the channel layout grid of each probe may be displayed in a translucent presentation. In this way, at least one of the mapped position, transformed position and channel layout grid of each probe can be displayed synchronously, and the mutual occlusion of these information can be avoided.

For example, the display viewing angle of the three-dimensional brain image may be changed so that the user can see at least one desired one of the mapped position, the transformed position and the channel layout grid of each probe. In this way, by changing the display viewing angle, the mapping position, transformed position and channel layout grid of each probe that is blocked under a certain display viewing angle can be exposed. In some embodiments, the three-dimensional brain image may be automatically mapped in response to user interaction with any one or a certain position or grid node of each probe's mapped position, transformed position, and channel layout grid. Go to a display perspective that makes interacting objects clearly visible.

For example, the mapped position, transformed position and channel layout grid of individual probes can also be displayed in a time-shared presentation.

For example, the transformed position, the mapped position, and the channel layout grid of probes other than the current probe are hidden when or where the position is to be measured for the current probe. As shown on the right side of Figure 11, in the case of measuring the position of the current probe D12, on the three-dimensional brain image, only the transformed position and channel layout grid of the current probe D12 are displayed, while the transformed positions and channel layout grids of other probes are displayed. All grids are hidden, which can reduce information occlusion, so that it is convenient for the user to focus on the probe D12 at the current measurement position, and better complete the positioning of the probe D12.

In some embodiments, the localization method may further comprise: changing the three-dimensional brain image based on the obtained transformed position and/or mapped position of each probe, if the position is to be measured for each probe or if the position is measured for each probe The display angle of view of the 3D brain image is such that the part of the three-dimensional brain image near the transformed position and/or the mapped position faces the user. In this way, during the positioning process, the three-dimensional brain image can always be automatically presented to the user at the position where the positioning is currently performed, so that the user can easily observe the positioning of each probe in real time, thereby completing the positioning process smoothly and conveniently.

Wherein, the transformed position and/or mapped position of each probe may be the transformed position and/or mapped position of each probe currently stored in the memory acquired from the memory, or may be the current measured position of each probe It can be calculated based on various transformations of the measured installation positions of the probes, or can be obtained through transformation based on at least one of the measurement installation positions, transformed positions and mapped positions of the probes currently stored in the memory.

In some embodiments, when at least one of the measured installation position, transformed position and mapped position of each probe is newly measured, the measured installed position, transformed position and mapped position of each probe stored in the memory can be At least one of the corresponding updates is performed, and at least one of the latest measured installation position, transformed position, and mapped position of each probe is always used for comparison with the three-dimensional brain image presentation. Specifically, in the memory, at least one of the corresponding first measured installation position, first transformed position and first mapped position may be stored in association with each probe. When at least one of the second measurement installation position, the second transformed position, and the second mapped position of each probe is obtained, use the second measured installation position, the second transformed position, and the second mapped position At least one replaces at least one of the corresponding first measured installation position, first transformed position, and first mapped position that has been stored. The display viewing angle of the 3D brain image may be changed according to the second transformed position or the second mapped position so that a part of the 3D brain image near the second transformed position or the second mapped position faces said user. Therefore, after the measurement installation position and transformation of each probe When the position and mapping position are updated, the display angle of view will also be automatically updated, so that the latest measurement installation position, transformed position, mapping position and nearby three-dimensional brain image parts of each probe can always be clearly presented to the user, which is convenient The user's positioning operation, especially in the case of displaying the channel layout grid formed by the transformed position on the 3D brain image, the automatic update of the display angle allows the user to focus on the current channel layout grid situation and avoid misjudgment. , if the 3D brain image is always facing the frontal part of the user, when the user locates the probes located on the left and right temporal parts, when the user views the channel layout grid formed on the left and right temporal parts from the perspective of the forehead, it is likely to be inaccurate due to the viewing angle problem. Determine whether the probe is positioned incorrectly.

In some embodiments, the positioning method may further include: displaying the brain area information described in the channels between the probes in areas other than the three-dimensional brain image on the display interface. The brain region information described by the channels between the probes usually has a lot of information and occupies a large display area. By avoiding the three-dimensional brain image and displaying it separately, it can avoid overlapping with other positioning information, causing information confusion and disrupting the user's viewing. In some embodiments, it can be displayed on another independent display area in the form of a table or a list.

In another embodiment, the processor may also obtain the brain region information to which the channel between the probes belongs, and display the brain region information on the display interface. Specifically, for the channel formed by each pair of SD probes, the anatomical position of the physiological state represented by it is the brain area information to which it belongs, and the brain area information can be identified by text, color, etc. In this way, the user can directly observe the brain region position information of the current channel, and compare the brain region information with the preset position information of each probe, which is beneficial to modify the probe setting position in the headgear design and process the near-infrared signal When positioning the brain regions with significant differences, etc.

In some embodiments, in order to realize the display of brain area information, the outline of all or part of the brain area can be identified, or when the mapping position of the probe or the channel formed between the probes is displayed, the mapping position or channel can be automatically The outline of the corresponding brain area is marked so that the user can directly observe the position of the channel. This display method is more friendly to users with less experience. In some embodiments, the brain region information may be displayed on the three-dimensional brain image, or may also be displayed in a display area other than the three-dimensional brain image in the display interface, which is not specifically limited here. In other embodiments, all or part of the brain area can be identified, or the brain area where the position is located can be automatically highlighted when displaying the probe's mapping position or channel, for example, by color distinction or contour line, etc. , when marked by color, the legend and text information of the brain region corresponding to each color can be presented in the sidebar or other windows of the display interface. In addition, when displaying channels between probes, the displayed The information of the brain region to which the channel belongs, or, when displaying the channel, in response to the user's selection operation, hovering operation, etc., display the information of the brain region to which the selected or desired channel belongs, for example, when the user clicks on the display interface The brain region information is displayed on the 3D brain image only when the Display button in the taskbar is pressed, or in the form of a table in another display area. In some other embodiments, after the positioning of all probes is completed, the brain region information of each channel can be automatically displayed, or it can also be determined according to the number of channels whether to automatically display the brain region information of the channel on the three-dimensional brain image , so that the automatically displayed brain region information does not block the channel or probe information. As an example only, when there is too much information to be displayed on the three-dimensional brain image, which may cause occlusion, only the channel information and brain region information associated with the probe currently being positioned can be displayed, or according to other display rules, so that The positioning information that the user is currently concerned about can be highlighted to the greatest extent. The above multiple manners can be implemented in any combination in a manner that does not contradict each other, and no specific limitation is made here.

Based on the display and prompt of information such as the position of the probe on the display interface, the channel layout grid, and the brain area to which the channel belongs, the user can check the measurement situation and rationality of the probe position based on the three-dimensional brain image and the display interface. In some embodiments, the identification part of each probe can be displayed on the display interface, and the mapping position of each probe can be checked based on preset rules, and the identification parts of probes that do not meet the preset rules are displayed in the first presentation manner. Specifically, the preset rule can be, for example, a reasonable range of parameters such as the distance and angle between the probes, especially the distance range between pairs of SDs, etc., and can also include the channel between the probes and the belongingness displayed on the display interface. There are no specific limitations on the comparison relationship of brain region information, and other preset rules that can prompt the user that there is a positioning error. In some embodiments, the above-mentioned first presentation manner may, for example, present the identification part of the probe in a color different from the original color of the identification part of the probe or with a highlighted logo, and so on, without limitation. Therefore, the user can not only judge whether the information such as the position of the probe, the layout of the channel, and the corresponding relationship between the channel and the brain area are correct, but also judge the degree of deformation of the headgear.

In some embodiments, when the part of the three-dimensional brain image corresponding to the measurement position (or the mapped position obtained based on the measurement position mapping, and other representative positions) faces the user, the measurement position and /or the mapping position, for example, the measurement position and the mapping position can be marked on the same three-dimensional brain image at the same time, or the measurement position and the mapping position can be marked respectively on two three-dimensional brain images located in different display areas on the same interface, combined The feature that the display angle of the 3D brain image rotates with the measuring position/or mapping position of the currently measured probe measuring point can make the positioning process more visualized and easy to understand, and at the same time, the user does not have to switch the display interface back and forth. More positioning information can be obtained on the interface, and the viewing angle is the frontal viewing angle direction, so Therefore, the position of the probe can be checked more conveniently, in more detail, and more accurately. In another embodiment, the measurement position and the mapping position can also be marked on the three-dimensional brain images on different interfaces, and the user can view the positioning situation by switching the interface, as long as it is convenient for the user to view and operate. Not specifically limited.

Fig. 12 shows a flowchart of a sixth example of a positioning method for a near-infrared brain function imaging device according to an embodiment of the present application. In the following, the specific process of using the detection pen and the positioning assembly to measure the position of each probe measuring point on the headgear will be described in conjunction with the sixth example.

As shown in Figure 12, in the process of obtaining the measurement position of each probe, first determine the second probe to be positioned according to the preset positioning sequence (step 801), as an example, for example, when the currently positioned probe is a transmitting probe , the paired receiving probes can be positioned sequentially until the receiving probes corresponding to the transmitting probe are all positioned, and then switch to the next transmitting probe. In other embodiments, the positioning order may also be preset according to another rule, which is not limited here. The preset positioning sequence is used to guide the user to position each probe on the headgear.

In some embodiments, the SD layout diagram can be displayed on the display interface, and the SD layout diagram has the identification parts of each probe (as shown in the left display area of Figures 3 (a) and 3 (b) ), after determining After selecting the second probe to be positioned, you can use the first indication method, including but not limited to, to mark the identification part of the second probe by highlighting, marking with different colors, etc., and instruct the user to check the second probe on the head cap. Specify the measuring point of the probe (step 802). For example, in Figure 3(a), the color of the identification part of the probe S7 is different from that of other probes, which is to instruct the user to perform position measurement on the measuring point of the probe S7 in the next step. . Similarly, in FIG. 3( b ), the color of the identification part of the probe S9 is different from that of other probes, which can be used to instruct the user to perform position measurement on the measuring point of the probe S9 in the next step.

Next, the user positions each probe according to the instructions, and receives the specified operation of the user using the detection pen to measure points of each probe on the headgear (such as the second probe determined in step 801), for example, the user uses the detection pen according to the preset positioning sequence Click each probe measurement point on the headgear sequentially, wherein the position of each probe measurement point is used to characterize the measurement position of each probe on the subject's head (step 803).

In response to the user's specified operation on the measurement points of each probe (eg, the second probe indicated in step 802 ) on the headgear by using the detection pen, use the positioning component to determine the measurement position of each probe (second probe) (step 804 ).

Next, after the positioning of the second probe is achieved, a second indication manner, including but not limited to changing the color of the identification portion of the second probe, is used to indicate that the positioning of the second probe has been achieved (step 805 ).

After the positioning of the current probe (second probe) is completed, step 801 of the next cycle can be entered, that is, according to the preset positioning sequence, the probe to be positioned next is determined until all the measuring points of the probes to be positioned by the user are all The measurement is complete.

During the entire positioning process, the user only needs to specify the operation of each probe on the headgear according to the guidance of the preset positioning sequence, and view the display angle of the three-dimensional brain image, the mapping position of the probe, and the The grid shape of the channel layout is sufficient, and the positioning of each probe can be known intuitively and in real time without additional manual operation, which significantly improves the positioning efficiency.

In some embodiments, the positioning method includes:

Obtain the position data of the measurement point of the detection pen determined by the positioning device;

determining the distance between the detection pen and the subject's head based on the acquired position data of the measurement point of the detection pen;

When the distance is less than the preset distance, process the position data of the measurement point of the detection pen to obtain the mapping position of the detection pen;

The mapping position of the detection pen is marked on the three-dimensional brain image.

In this way, in the positioning process of the near-infrared brain function imaging device, the distance between the detection pen and the subject's head can be judged first, and only when the distance between the detection pen and the subject's head is less than the preset In the case of distance, the position data of the measuring point of the detection pen is processed to obtain the mapping position of the detection pen; the mapping position of the detection pen is marked on the three-dimensional brain image, which can save computing resources and improve the accuracy of the detection pen. Data processing speed. Marking the mapping position of the detection pen on the three-dimensional brain image has the function of positioning and navigation, so that the user can intuitively view the position of the detection pen in real time during the positioning process, making the positioning process more visualized, and significantly improving the near-infrared brain function imaging device. positioning efficiency.

Therefore, the above method not only significantly reduces the calculation load, makes the positioning process more visualized, significantly improves the positioning efficiency of the near-infrared brain function imaging device, but also improves the guidance effect for users.

In some embodiments, the method further includes: when the distance is equal to or greater than a preset distance, not processing the position data of the measurement point of the detection pen, and not displaying the detection on the three-dimensional brain image. The mapped position of the pen.

If the distance is equal to or greater than the preset distance, it is considered that the user has no intention of using the detection pen for positioning, and the position data of the measurement points of the detection pen will not be processed, and the detection will not be displayed on the three-dimensional brain image. The mapped position marker for the pen. By judging the detection pen and the object's The distance between the heads is used to determine whether to process the position data of the measurement point of the detection pen, which can save computing resources and increase the speed of data processing.

The embodiment of the present application also provides a positioning device for a near-infrared brain function imaging device. As shown in FIG. 13 , the positioning device includes a first positioning component 104c and a first processor 102c. Wherein, the first positioning component 104c can be configured to: position each probe or the installation position of each probe on the headgear of the near-infrared brain function imaging device, so as to obtain the measurement installation position of each probe. The first processor 102c may be configured to execute a positioning method for a near-infrared brain function imaging device according to various embodiments of the present application. For the first positioning component 104c and the first processor 102c, reference may be made to the detailed description of the positioning component 104 and the processor 102 in conjunction with FIG. 1 , and details are not repeated here.

An embodiment according to the present application also provides a near-infrared brain function imaging system, as shown in FIG. 14 , the system may include a headgear 101 , a second positioning component 104d and a second processor 102d. The headgear 101 may be configured to be worn on the subject's head and have multiple probes for transmitting and/or receiving near-infrared signals, or be provided with multiple installation positions for installing each probe. The second positioning component 104d may be configured to position each probe or the installation position of each probe on the headgear, so as to obtain the measurement installation position of each probe. The second processor 102d may be configured to execute a positioning method for a near-infrared brain function imaging device according to various embodiments of the present application. For the headgear 101 , the second positioning component 104 d and the second processor 102 d , refer to the detailed description of the headgear 101 , the positioning component 104 and the processor 102 in conjunction with FIG. 1 , and details are not repeated here. It can be understood that, after the probe on the headgear is positioned, the probe can be used to collect near-infrared signals on the head of the subject, and the second processor 102d can also perform methods such as data collection, processing and analysis, and presentation of analysis results on the near-infrared signals .

Embodiments of the present application also provide a computer storage medium on which computer-executable instructions are stored. When the computer-executable instructions can be executed by a processor, the positioning method according to the aforementioned near-infrared brain function imaging device can be realized. step. Storage media may include read-only memory (ROM), flash memory, random-access memory (RAM), dynamic random-access memory (DRAM) such as synchronous DRAM (SDRAM) or Rambus DRAM, static memory (e.g., flash memory, SRAM access memory), etc., on which computer-executable instructions may be stored in any format.

Furthermore, while exemplary embodiments have been described herein, the scope includes any and all implementations having equivalent elements, modifications, omissions, combinations (eg, cross-cutting aspects of various embodiments), adaptations, or changes based on this application example. Elements in the claims are to be interpreted broadly based on the language employed in the claims and are not limited to examples described in this specification or during the practice of the application, which examples are to be construed as non-exclusive. Accordingly, this specification and examples are intended to be considered For example, the true scope and spirit are indicated by the following claims, along with their full scope of equivalents.

The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. Additionally, in the above detailed description, various features may be grouped together to simplify the application. This is not to be interpreted as intending that an unclaimed disclosed feature is essential to any claim. Rather, subject matter of the application may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, where each claim stands on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the application should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be deemed to fall within the protection scope of the present application.

Claims

A positioning method for a near-infrared brain function imaging device, characterized in that the near-infrared brain function imaging device has a headgear, the headgear is used to be worn on the subject's head and has multiple transmission and /or a probe receiving a near-infrared signal, or an installation position capable of assembling each of the probes, the positioning method includes:

displaying a three-dimensional brain image on a display interface;

Obtaining the measurement position of each probe, where the position is to be measured for each probe or where the position is to be measured for each probe;

The display angle of the three-dimensional brain image is changed based on the acquired measurement position of each probe, so that the part of the three-dimensional brain image corresponding to the measurement position faces the user.
The positioning method according to claim 1, wherein the display angle of the three-dimensional brain image is changed based on the acquired measurement position of each probe, so that the part of the three-dimensional brain image corresponding to the measurement position faces the user, Specifically include:

Mapping the acquired measurement positions of each probe to a three-dimensional brain model to determine the mapping position of each probe, wherein the three-dimensional brain model is used to construct and form the three-dimensional brain image;

Changing the display angle of view of the three-dimensional brain image according to the determined mapping position of each probe, so that the part of the three-dimensional brain image where the mapping position is located faces the user.
The positioning method according to claim 2, further comprising:

Displaying the identification part of each probe on the display interface;

receiving the user's instruction operation on the identification part of the first probe;

Responding to the user's instruction operation on the identification part of the first probe, acquire the measurement position and/or the mapping position of the first probe stored in association with the first probe;

Changing the display angle of the three-dimensional brain image according to the determined mapping position of the first probe, so that the part of the three-dimensional brain image where the mapping position of the first probe is located faces the user.
The positioning method according to claim 1 or 2, wherein obtaining the measurement position of each probe specifically comprises:

determining a second probe to be positioned according to a preset positioning sequence;

Instructing the user to perform specified operations on the measuring points of the second probe on the headgear in the first indication manner;

After realizing the positioning of the second probe, indicating that the positioning of the second probe has been achieved in a second indication manner;

Receive the user's specified operation on each probe measuring point on the headgear by using the detection pen, wherein each The position of each probe measuring point is used to characterize the measurement position of each probe on the head;

In response to the specified operation of the user on the measurement points of each probe on the headgear by using the detection pen, the measurement position of each probe is determined by using the positioning component.
The positioning method according to claim 2, wherein the positioning method further comprises:

storing corresponding first measurement positions and/or first mapped positions in association with each probe;

When the second measurement position and/or the second mapping position of each probe is acquired, the stored corresponding first measurement position and/or first mapping position is replaced with the second measurement position and/or the second mapping position ;

Changing the display angle of the three-dimensional brain image according to the second mapping position, so that the part of the three-dimensional brain image where the second mapping position is located faces the user.
The positioning method according to claim 2, wherein mapping the acquired measurement positions of each probe to the three-dimensional brain model specifically includes:

Incompletely mapping the acquired measurement positions of each probe to the three-dimensional brain model, and/or completely mapping the acquired measurement positions of each probe to the three-dimensional brain model, wherein,

The incomplete mapping means that the relative positional relationship between the measurement positions of the respective probes does not change when it is mapped onto the three-dimensional brain model.
The positioning method according to claim 6, wherein the incomplete mapping of the acquired measurement positions of each probe to the three-dimensional brain model specifically includes:

The measurement installation position of each probe is adaptively transformed for the three-dimensional brain model, so that the angle between the lines of the measurement installation position is consistent with the angle between the lines of the corresponding transformed position, thereby determining each The transformed position of the probe.
The positioning method according to claim 7, characterized in that, performing the adaptive transformation for the three-dimensional brain model on the acquired measurement installation positions of each probe specifically comprises:

Acquiring the first position of the first set of reference points on the subject's head and the second position of the corresponding second set of reference points set on the three-dimensional brain model;

determining a scaling factor, a translation factor, and a rotation factor in each coordinate direction based on the first position of the first set of reference points and the second position of the second set of reference points;

determining a single representative scaling factor based on the scaling factors in the respective coordinate directions;

Based on the determined measurement installation position of each probe, in each coordinate direction, the transformed position of each probe is determined by performing transformation using the single representative scaling factor and the translation factor and rotation factor corresponding to the coordinate direction.
The positioning method according to claim 8, wherein the single representative scaling factor comprises an average value of scaling factors in each coordinate direction.
The positioning method according to claim 7, further comprising:

Obtain the layout information of the channels between the probes;

Based on the determined transformed position of each probe, using the acquired channel layout information between the probes to form a channel layout grid;

The channel layout grid is displayed relative to the three-dimensional brain image.
The positioning method according to claim 10, further comprising, when displaying the transformed positions, mapped positions and channel layout grids of each probe on the three-dimensional brain image:

displaying at least one of the mapped position, the transformed position, and the channel layout grid of each probe in a semi-transparent presentation; and/or

changing the display viewing angle of the three-dimensional brain image so that the user can see at least one of the desired one of the mapped position, the transformed position and the channel layout grid of each probe; and/or

displaying the mapped position, transformed position and channel layout grid of individual probes in a time-shared presentation; and/or

In case a position is to be measured for the current probe or in case a position is measured for the current probe, the transformed position, the mapped position and the channel layout grid of probes other than the current probe are hidden.
The positioning method according to claim 1 or 2, characterized in that, the positioning method further comprises: displaying information on the brain region to which the channel between the probes belongs on the display interface; wherein,

Said displaying the brain area information to which the channel between the probes belongs in said display interface specifically includes at least one of the following:

When displaying the channel, automatically display the brain area information to which the displayed channel belongs;

When displaying the channel, display the information of the brain region to which the selected channel belongs in response to the user's selection operation;

After the positioning of all probes is completed, the brain region information described by each channel is automatically displayed; or

Whether to automatically display the brain area information described in the channel on the three-dimensional brain image is determined according to the number of channels, so that the automatically displayed brain area information does not block the channel or probe information.
The positioning method according to claim 1, wherein the positioning method further comprises:

Obtain the position data of the measurement point of the detection pen determined by the positioning device;

Based on the acquired position data of the measurement point of the detection pen, determine the head of the detection pen and the object distance between parts;

When the distance is less than the preset distance, process the position data of the measurement point of the detection pen to obtain the mapping position of the detection pen;

The mapping position of the detection pen is marked on the three-dimensional brain image.
The positioning method according to any one of claims 13, further comprising:

In the case where the distance is equal to or greater than a preset distance, the position data of the measurement point of the detection pen is not processed, and the mapped position of the detection pen is not displayed on the three-dimensional brain image.
A positioning device for a near-infrared brain function imaging device, characterized in that the positioning device includes a first positioning component and a first processor, wherein,

The first positioning component is configured to: position each probe on the headgear of the near-infrared brain function imaging device, so as to determine the measurement position of each probe;

The first processor is configured to: execute the positioning method for a near-infrared brain function imaging device according to any one of claims 1-14.
A near-infrared brain function imaging system, characterized in that the near-infrared brain function imaging system comprises:

a headgear, the headgear is configured to be worn on the subject's head and has a plurality of probes for transmitting and/or receiving near-infrared signals, or a mounting position capable of fitting each of the probes;

The second positioning component is configured to: position each probe on the headgear to determine the measurement position of each probe;

A second processor configured to: execute the positioning method for a near-infrared brain function imaging device according to any one of claims 1-14.
A non-transitory computer-readable storage medium storing a program, the program causes a processor to execute the positioning method for a near-infrared brain function imaging device according to any one of claims 1-14.