CN117814731A - Blood flow imaging method, system, equipment and storage medium - Google Patents
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Abstract
The present application provides a blood flow imaging method, system, apparatus and storage medium, the blood flow imaging method being used for imaging of a hard mirror, irradiating a target site by emitting a first laser beam; receiving reflected light generated by irradiating the first laser beam to the target part, and converting an optical signal of the reflected light into an electric signal to obtain an initial blood flow image comprising dynamic speckles and static speckles; identifying an overlapping region of the dynamic speckle and the static speckle by based on the initial blood flow image; and obtaining a target blood flow image by emitting a second laser beam to the overlapped area, wherein the light intensity of the second laser beam is larger than that of the first laser beam. The blood flow imaging method provided by the application can enhance the resolution of the overlapped area, so that the resolution of the blood flow imaging method is close to the resolution of other areas in the image, and the displayed blood flow image has higher resolution, so that the blood vessels can be clearly displayed, and the accuracy of disease diagnosis can be improved.
Description
Technical Field
The present disclosure relates to the field of medical devices, and in particular, to a blood flow imaging method, system, apparatus, and storage medium.
Background
By blood flow imaging, microcirculation parameters of blood flow, such as blood flow velocity, flow rate, etc., which can be an important judgment index of blood vessel function, which are closely related to the development of many diseases, such as diabetes, arteriosclerosis, etc., can be obtained and can also contribute to blood vessel imaging. Thus, blood flow imaging can be a clinical indicator for diagnosing some diseases.
However, in diagnosis of some diseases, partial image areas of blood flow imaging have low resolution, resulting in partial blood vessels not being completely displayed in blood vessel imaging, thereby resulting in a decrease in accuracy of disease diagnosis.
Disclosure of Invention
In view of this, a blood flow imaging method, system, apparatus, and storage medium are provided that enable a displayed blood flow image to have a higher resolution, thereby contributing to a clear display of blood vessels, and thus contributing to an improvement in the accuracy of disease diagnosis.
In a first aspect, embodiments of the present disclosure provide a blood flow imaging method for imaging a hard mirror, the blood flow imaging method comprising:
emitting a first laser beam to irradiate a target part;
receiving reflected light generated by the irradiation of the first laser beam to the target part, and converting an optical signal of the reflected light into an electric signal to obtain an initial blood flow image comprising dynamic speckles and static speckles;
confirming an overlapping region of the dynamic speckle and the static speckle based on the initial blood flow image;
and emitting a second laser beam to the overlapped area to obtain a target blood flow image, wherein the light intensity of the second laser beam is larger than that of the first laser beam.
According to some optional embodiments of the present disclosure, emitting a second laser beam toward the overlapping region to obtain a target blood flow image includes:
acquiring subcutaneous tissue parameters in the overlapping region;
and according to the subcutaneous tissue parameters, emitting a second laser beam to the overlapped area to obtain a target blood flow image.
According to some alternative embodiments of the present description, the subcutaneous tissue parameters include thickness and/or attenuation coefficient.
According to some optional embodiments of the present specification, identifying the overlapping region of the dynamic and static speckles based on the initial blood flow image comprises:
dividing the initial blood flow imaging into a plurality of image areas based on the initial blood flow image;
acquiring resolutions of a plurality of image areas;
based on the resolutions of the plurality of image areas, overlapping areas of dynamic and static speckle are identified.
According to some optional embodiments of the present specification, identifying the overlapping region of the dynamic and static speckles based on the resolution of the plurality of image regions comprises:
calculating a resolution difference between adjacent image areas based on the resolutions of the plurality of image areas;
comparing the resolution difference value with a preset difference value to obtain a comparison result;
based on the comparison result, the overlapping area of the dynamic speckle and the static speckle is confirmed.
In a second aspect, embodiments of the present disclosure provide a blood flow imaging system comprising:
a hard mirror having a beam transmission channel;
a light source disposed within the beam transmission channel, the light source configured to emit a first laser beam to illuminate the target site;
an imaging unit coupled to the light source, the imaging unit configured to receive reflected light generated by the first laser beam irradiating the target site and to convert an optical signal of the reflected light into an electrical signal, resulting in an initial blood flow image including dynamic speckle and static speckle;
a confirmation unit coupled to the imaging unit, the confirmation unit configured to confirm an overlapping region of the dynamic speckle and the static speckle based on the initial blood flow image;
and the reinforcement unit is configured to emit a second laser beam to the overlapped area to obtain a target blood flow image, wherein the light intensity of the second laser beam is larger than that of the first laser beam.
According to some optional embodiments of the present specification, the confirmation unit comprises:
a dividing module configured to divide the initial blood flow imaging into a plurality of image areas based on the initial blood flow image;
an acquisition module configured to acquire resolutions of a plurality of image areas;
and a confirmation module configured to confirm the overlapping region of the dynamic speckle and the static speckle based on the resolutions of the plurality of image regions.
According to some alternative embodiments of the present specification, the hard scope comprises at least one of a brain scope, a ventriculoscope, a neuroscope, a nasal scope.
In a third aspect, embodiments of the present specification provide a computer device comprising:
a memory configured to store computer instructions executable on the processor; and
a processor configured to image based on the blood flow imaging method of the first aspect of the present specification when executing computer instructions.
In a fourth aspect, embodiments of the present specification provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the blood flow imaging method of the first aspect of the present specification.
The present invention provides a blood flow imaging method, system, apparatus and storage medium, the blood flow imaging method is used for imaging a hard mirror, and a target part is irradiated by emitting a first laser beam; receiving reflected light generated by irradiating the first laser beam to the target part, and converting an optical signal of the reflected light into an electric signal to obtain an initial blood flow image comprising dynamic speckles and static speckles; identifying an overlapping region of the dynamic speckle and the static speckle by based on the initial blood flow image; and obtaining a target blood flow image by emitting a second laser beam to the overlapped area, wherein the light intensity of the second laser beam is larger than that of the first laser beam. From the above, the second laser beam is emitted to the overlapping region of the dynamic speckle and the static speckle, so that the resolution of the overlapping region can be enhanced, the resolution of the overlapping region is close to the resolution of other regions in the image, that is, the resolution difference between the image regions is reduced, and the displayed blood flow image has higher resolution, so that the blood vessels can be clearly displayed, and the accuracy of disease diagnosis can be improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the specification. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:
FIG. 1 illustrates a flow diagram of a blood flow imaging method provided in some embodiments of the present disclosure;
FIG. 2 illustrates a flow diagram of a method of blood flow imaging provided in some embodiments of the present disclosure;
FIG. 3 illustrates a flow diagram of a method of blood flow imaging provided in some embodiments of the present disclosure;
FIG. 4 illustrates a flow diagram of a method of blood flow imaging provided in some embodiments of the present disclosure;
fig. 5 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
Embodiments of the technical solutions of the present specification will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present specification, and thus are merely examples, and are not intended to limit the scope of the present specification.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure; the terms "comprising" and "having" and any variations thereof in the description and claims of the present specification and the foregoing description of the drawings are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present specification, the technical terms "first," "second," etc. are used merely to distinguish between different objects and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present specification, the meaning of "plurality" is two or more unless specifically defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present description. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present specification, the term "and/or" is merely an association relationship describing an association object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the embodiments of the present specification, the term "plurality" refers to two or more (including two).
In this specification, a subcutaneous blood flow image may be imaged by using a laser speckle technique, and when a tissue or organ is irradiated by a laser beam, speckles formed by random interference are generated on a scattering medium (such as flowing blood cells), and the blood flow image is generated by analyzing the speckles, wherein the blood flow image mainly comprises dynamic speckles and static speckles. However, the static speckle can mask the dynamic speckle signal generated by the target blood vessel, so that a blurred region appears in the formed blood flow image, and further, pathological analysis of the target part by a doctor is reduced, thereby reducing the accuracy of disease diagnosis.
In view of this, the present specification provides a blood flow imaging method, system, apparatus, and storage medium, which enable a displayed blood flow image to have a higher resolution, thereby contributing to clear display of blood vessels, thereby contributing to improvement of accuracy of disease diagnosis.
In a first aspect, referring to fig. 1, fig. 1 is a flow chart illustrating a blood flow imaging method according to some embodiments of the present disclosure, where the blood flow imaging method is used for imaging a hard mirror, and the blood flow imaging method includes:
s100, emitting a first laser beam to irradiate a target part;
s200, receiving reflected light generated by the irradiation of the first laser beam to the target part, and converting an optical signal of the reflected light into an electric signal to obtain an initial blood flow image comprising dynamic speckles and static speckles;
s300, based on the initial blood flow image, confirming an overlapping area of the dynamic speckle and the static speckle;
s400, emitting a second laser beam to the overlapped area to obtain a target blood flow image, wherein the light intensity of the second laser beam is larger than that of the first laser beam.
In the embodiments of the present specification, a hard scope has a meaning known in the art, and generally refers to a scope body that is not bendable and has a relatively hard texture, such as a brain scope, a ventriculoscope, a neuroscope, a nasal scope, and the like.
In embodiments of the present disclosure, the target site may be, but is not limited to, tissues and organs such as the nose, skin, muscle, bone, teeth, brain, liver, kidney, gastrointestinal tract (mucosa, serosa), mesentery, and the like.
Light intensity has the meaning well known in the art, i.e., light intensity generally refers to the energy of visible light received per unit area in candelas, abbreviated cd.
According to the blood flow imaging method provided by the specification, the resolution of the overlapped area can be enhanced by emitting the second laser beam to the overlapped area of the dynamic speckle and the static speckle, so that the resolution of the overlapped area is close to the resolution of other areas in the image, namely, the resolution difference between the image areas is reduced, and the displayed blood flow image has higher resolution, so that the blood vessels can be clearly displayed, and the accuracy of disease diagnosis can be improved.
In step S100, a first laser beam may be emitted by a laser source in the near infrared region. Specifically, the laser light source may be a laser or a laser diode. By way of example, the laser source may be a laser capable of generating linearly polarized light having a wavelength in the range of 800nm to 900nm and a power greater than or equal to 150mW, which may facilitate transmission of the laser light through the subcutaneous tissue to provide greater clarity in imaging blood flow.
In step S200, the laser beam irradiates the target site, and since the target site contains a scattering medium (e.g., blood cells flowing in a blood vessel), part of the laser beam can be reflected back, and by receiving the reflected light, the reflected light signals are converted into electrical signals, and the electrical signals are subjected to enhancement, filtering, and the like to form an initial blood flow image. Since flowing blood and static tissues exist in a target part, dynamic speckle and static speckle appear in a blood flow image, wherein the overlapped area of the static speckle and the dynamic speckle can cause unclear blood vessel display in the blood flow image, the blood flow imaging method can enhance the resolution of the overlapped area by emitting a second laser beam to the overlapped area of the dynamic speckle and the static speckle, so that the resolution of the overlapped area is close to that of other areas in the image, namely the resolution difference between image areas is reduced, and the displayed blood flow image has higher resolution, so that the blood vessel can be clearly displayed, and the disease diagnosis accuracy can be improved.
Referring to fig. 2, fig. 2 is a flow chart illustrating a blood flow imaging method according to some embodiments of the present disclosure, and in some alternative implementations of the present disclosure, the step of identifying an overlapping region of a dynamic speckle and a static speckle based on an initial blood flow image, that is, S300 includes:
s310, dividing initial blood flow imaging into a plurality of image areas based on the initial blood flow image;
s320, acquiring resolutions of a plurality of image areas;
s330, based on the resolutions of the plurality of image areas, the overlapping area of the dynamic speckle and the static speckle is confirmed.
In these alternative embodiments, by dividing the initial blood flow imaging into a plurality of image regions, the difference between the resolutions in the image regions can be made clearer, thereby facilitating the confirmation of the overlapping region of the dynamic and static speckles, and thus improving the accuracy of the confirmation.
Referring to fig. 3, fig. 3 is a flow chart illustrating a blood flow imaging method according to some embodiments of the present disclosure, in some alternative implementations of the present disclosure, the identifying an overlapping region of a dynamic speckle and a static speckle based on resolutions of a plurality of image regions, that is, the step S330 includes:
s331, calculating a resolution difference value between adjacent image areas based on the resolutions of the image areas;
s332, comparing the resolution difference value with a preset difference value to obtain a comparison result;
s333, based on the comparison result, confirming the overlapped area of the dynamic speckle and the static speckle.
In the above-mentioned alternative embodiments, based on the resolutions of the plurality of image areas, respectively calculating to obtain the resolution differences between the adjacent image areas, and comparing the differences with the preset differences to obtain a comparison result, that is, if the resolution difference is greater than or equal to the preset difference, it may be determined that the area is an overlapping area; if the resolution difference is smaller than the preset difference, the area is confirmed not to be an overlapped area. This can further improve the accuracy of the confirmation, thereby improving the imaging efficiency.
Referring to fig. 4, fig. 4 is a schematic flow chart of a blood flow imaging method provided in some embodiments of the present disclosure, in some alternative implementations of the present disclosure, a second laser beam is emitted to an overlapping area to obtain a target blood flow image, that is, step S400 includes:
s410, acquiring subcutaneous tissue parameters in the overlapped area;
s420, emitting a second laser beam to the overlapped area according to the subcutaneous tissue parameters to obtain a target blood flow image.
In the alternative embodiment, by acquiring the subcutaneous tissue parameter in the overlapped area and emitting the second laser beam with proper light intensity according to the subcutaneous tissue parameter, on one hand, the resolution of the image in the area can be enhanced, and the resolution difference between the image and other image areas can be reduced, so that the imaging of blood vessels in the overlapped area is facilitated; on the other hand, the probability of damage to subcutaneous tissue and blood vessels can be reduced.
As can be seen from the above, the first laser beam may be emitted by a first laser with a power greater than or equal to 150mW, and the second laser beam may be emitted by a second laser with a power greater than the first laser power. Exemplary, the first laser has a power of 150mW and the second laser has a power of 200mW, which facilitates the passage of the second laser beam through the tissue, causing this region
In some alternative embodiments of the present description, the subcutaneous tissue parameters include thickness and/or attenuation coefficient. By means of these parameters, the power required to pass through it can be clearly known, so that the probability of damage to the vessel by the laser beam can be further reduced while the vessel can be clearly displayed.
Based on the same inventive concept, the embodiments of the present application also provide a blood flow imaging system for implementing the above-mentioned blood flow imaging method. The implementation of the solution provided by the system is similar to that described in the above method, so specific limitations in one or more embodiments of the blood flow imaging system provided below may be found in the limitations of the blood flow imaging method described above, and will not be repeated here.
In one embodiment, the present specification provides a blood flow imaging system comprising:
a hard mirror having a beam transmission channel;
a light source disposed within the beam transmission channel, the light source configured to emit a first laser beam to illuminate the target site;
an imaging unit coupled to the light source, the imaging unit configured to receive reflected light generated by the first laser beam irradiating the target site and to convert an optical signal of the reflected light into an electrical signal, resulting in an initial blood flow image including dynamic speckle and static speckle;
a confirmation unit coupled to the imaging unit, the confirmation unit configured to confirm an overlapping region of the dynamic speckle and the static speckle based on the initial blood flow image;
and the reinforcement unit is configured to emit a second laser beam to the overlapped area to obtain a target blood flow image, wherein the light intensity of the second laser beam is larger than that of the first laser beam.
According to some optional embodiments of the present specification, the confirmation unit comprises:
a dividing module configured to divide the initial blood flow imaging into a plurality of image areas based on the initial blood flow image;
an acquisition module configured to acquire resolutions of a plurality of image areas;
and a confirmation module configured to confirm the overlapping region of the dynamic speckle and the static speckle based on the resolutions of the plurality of image regions.
In some optional embodiments of the present disclosure, the confirmation module is specifically configured to calculate a resolution difference between adjacent image areas based on resolutions of the plurality of image areas; comparing the resolution difference value with a preset difference value to obtain a comparison result; based on the comparison result, the overlapping area of the dynamic speckle and the static speckle is confirmed.
In some optional embodiments of the present description, the stiffening element is specifically configured to obtain subcutaneous tissue parameters in the overlapping region; and according to the subcutaneous tissue parameters, emitting a second laser beam to the overlapped area to obtain a target blood flow image.
In some alternative embodiments of the present specification, the hard scope comprises at least one of a brain scope, a ventriculoscope, a neuroscope, a nasal scope.
In some embodiments of the present description, the imaging unit comprises an image sensor, which may be, for example, a charge coupled device sensor or a CMOS sensor, capable of receiving the optical signal and converting the optical signal into an electrical signal to form image data, which is transmitted via a cable to a controller for processing to obtain an image, which is then transmitted to a display unit. In addition, the imaging unit further includes other conventional components, such as an objective lens, a focusing lens, etc., which are not described in detail herein.
The various modules in the blood flow imaging system described above may be implemented in whole or in part by software, hardware, and combinations thereof. The units can be embedded in hardware or independent of a processor in the electronic device, and can also be stored in a memory in the computer device in a software mode, so that the processor can call and execute the operations corresponding to the modules.
In order to solve the technical problem, the embodiment of the application further provides a computer device. Referring specifically to fig. 5, fig. 5 is a basic structural block diagram of a computer device according to the present embodiment.
The computer device 5 comprises a memory 51, a processor 52, a network interface 53 which are communicatively connected to each other via a system bus. It should be noted that only the computer device 5 with components 51-53 is shown in the figures, but it should be understood that not all of the illustrated components are required to be implemented and that more or fewer components may be implemented instead. It will be appreciated by those skilled in the art that the computer device herein is a device capable of automatically performing numerical calculations and/or information processing in accordance with predetermined or stored instructions, the hardware of which includes, but is not limited to, microprocessors, application specific integrated circuits (Application Specific Integrated Circuit, ASICs), programmable gate arrays (fields-Programmable Gate Array, FPGAs), digital processors (Digital Signal Processor, DSPs), embedded devices, etc.
The computer equipment can be a desktop computer, a notebook computer, a palm computer, a cloud server and other computing equipment. The computer equipment can perform man-machine interaction with a user through a keyboard, a mouse, a remote controller, a touch pad or voice control equipment and the like.
The memory 51 includes at least one type of readable storage medium including flash memory, hard disk, multimedia card, card memory (e.g., SD or DX memory, etc.), random Access Memory (RAM), static Random Access Memory (SRAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), programmable Read Only Memory (PROM), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the storage 51 may be an internal storage unit of the computer device 5, such as a hard disk or a memory of the computer device 5. In other embodiments, the memory 51 may also be an external storage device of the computer device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the computer device 5. Of course, the memory 51 may also comprise both an internal memory unit of the computer device 5 and an external memory device. In this embodiment, the memory 51 is typically used to store an operating system and various types of application software installed on the computer device 5, such as program codes of a multi-directional depth estimation method. Further, the memory 51 may be used to temporarily store various types of data that have been output or are to be output.
The processor 52 may be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor, or other data processing chip in some embodiments. The processor 52 is typically used to control the overall operation of the computer device 5. In this embodiment, the processor 52 is configured to execute the program code stored in the memory 51 or process data, such as the program code for executing the multi-directional depth estimation method.
The network interface 53 may comprise a wireless network interface or a wired network interface, which network interface 53 is typically used to establish communication connections between the computer device 5 and other electronic devices.
In a fourth aspect, embodiments of the present specification provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the blood flow imaging method of the first aspect of the present specification.
In some alternative embodiments, the processor, when executing the computer program, performs the steps of:
emitting a first laser beam to irradiate a target part;
receiving reflected light generated by the irradiation of the first laser beam to the target part, and converting an optical signal of the reflected light into an electric signal to obtain an initial blood flow image comprising dynamic speckles and static speckles;
confirming an overlapping region of the dynamic speckle and the static speckle based on the initial blood flow image;
and emitting a second laser beam to the overlapped area to obtain a target blood flow image, wherein the light intensity of the second laser beam is larger than that of the first laser beam.
In some alternative embodiments of the present description, the processor when executing the computer program further performs the steps of:
dividing the initial blood flow imaging into a plurality of image areas based on the initial blood flow image;
acquiring resolutions of a plurality of image areas;
in some alternative embodiments of the present description, the processor when executing the computer program further performs the steps of:
calculating a resolution difference between adjacent image areas based on the resolutions of the plurality of image areas;
comparing the resolution difference value with a preset difference value to obtain a comparison result;
based on the comparison result, the overlapping area of the dynamic speckle and the static speckle is confirmed.
In some alternative embodiments of the present description, the processor when executing the computer program further performs the steps of:
acquiring subcutaneous tissue parameters in the overlapping region;
and according to the subcutaneous tissue parameters, emitting a second laser beam to the overlapped area to obtain a target blood flow image.
Embodiments of the subject matter and the functional operations described in this specification can be implemented in: digital electronic circuitry, tangibly embodied computer software or firmware, computer hardware including the structures disclosed in this specification and structural equivalents thereof, or a combination of one or more of them. Embodiments of the subject matter described in this specification can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a tangible, non-transitory program carrier for execution by, or to control the operation of, data processing apparatus. Alternatively or additionally, the program instructions may be encoded on a manually-generated propagated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode and transmit information to suitable receiver apparatus for execution by data processing apparatus. The computer storage medium may be a machine-readable storage device, a machine-readable storage substrate, a random or serial access memory device, or a combination of one or more of them.
The processes and logic flows described in this specification can be performed by one or more programmable computers executing one or more computer programs to perform corresponding functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).
Computers suitable for executing computer programs include, for example, general purpose and/or special purpose microprocessors, or any other type of central processing unit. Typically, the central processing unit will receive instructions and data from a read only memory and/or a random access memory. The essential elements of a computer include a central processing unit for carrying out or executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical disks, or optical disks, etc. However, a computer does not have to have such a device. Furthermore, the computer may be embedded in another device, such as a mobile phone, a Personal Digital Assistant (PDA), a mobile audio or video player, a game console, a Global Positioning System (GPS) receiver, or a portable storage device such as a Universal Serial Bus (USB) flash drive, to name a few.
Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices including, for example, semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal hard disk or removable disks), magneto-optical disks, and CD-ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.
While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features of specific embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. On the other hand, the various features described in the individual embodiments may also be implemented separately in the various embodiments or in any suitable subcombination. Furthermore, although features may be acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.
Similarly, although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system modules and components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.
Thus, particular embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. Furthermore, the processes depicted in the accompanying drawings are not necessarily required to be in the particular order shown, or sequential order, to achieve desirable results. In some implementations, multitasking and parallel processing may be advantageous.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present specification, and are not limited thereto. Although the present specification has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments may be modified or some or all of the technical features may be replaced with equivalents. These modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present specification, and it should be finally described that: the above embodiments are only for illustrating the technical solution of the present specification, and are not limited thereto. Although the present specification has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments may be modified or some or all of the technical features may be replaced with equivalents. Such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present specification.
Claims (10)
1. A blood flow imaging method for imaging a hard mirror, the blood flow imaging method comprising:
emitting a first laser beam to irradiate a target part;
receiving reflected light generated by the first laser beam irradiating the target part, and converting an optical signal of the reflected light into an electric signal to obtain an initial blood flow image comprising dynamic speckles and static speckles;
identifying an overlapping region of the dynamic speckle and the static speckle based on the initial blood flow image;
and emitting a second laser beam to the overlapped area to obtain a target blood flow image, wherein the light intensity of the second laser beam is larger than that of the first laser beam.
2. The method of blood flow imaging of claim 1, wherein said emitting a second laser beam toward said overlapping region results in a target blood flow image, comprising:
acquiring subcutaneous tissue parameters in the overlapping region;
and according to the subcutaneous tissue parameters, emitting a second laser beam to the overlapped area to obtain a target blood flow image.
3. The blood flow imaging method of claim 2, wherein the subcutaneous tissue parameters include thickness and/or attenuation coefficient.
4. The method of blood flow imaging of claim 1, wherein said identifying an overlapping region of said dynamic speckle and said static speckle based on said initial blood flow image comprises:
dividing the initial blood flow image into a plurality of image areas based on the initial blood flow image;
acquiring resolutions of the plurality of image areas;
based on the resolution of the plurality of image areas, an overlapping area of the dynamic speckle and the static speckle is identified.
5. The method of blood flow imaging of claim 4, wherein said identifying the overlapping region of the dynamic speckle and the static speckle based on the resolution of the plurality of image regions comprises:
calculating a resolution difference between adjacent image areas based on the resolutions of the plurality of image areas;
comparing the resolution difference value with a preset difference value to obtain a comparison result;
based on the comparison result, an overlapping region of the dynamic speckle and the static speckle is identified.
6. A blood flow imaging system, comprising:
a hard mirror having a beam transmission channel;
a light source disposed within the beam transmission channel, the light source configured to emit a first laser beam to illuminate a target site;
an imaging unit coupled to the light source, the imaging unit configured to receive reflected light generated by the first laser beam irradiating the target site and to convert an optical signal of the reflected light into an electrical signal, resulting in an initial blood flow image including dynamic speckle and static speckle;
a confirmation unit coupled with the imaging unit, the confirmation unit configured to confirm an overlapping region of the dynamic speckle and the static speckle based on the initial blood flow image;
and the reinforcement unit is configured to emit a second laser beam to the overlapped area to obtain a target blood flow image, wherein the light intensity of the second laser beam is larger than that of the first laser beam.
7. The blood flow imaging system of claim 6, wherein the validation unit comprises:
a dividing module configured to divide the initial blood flow image into a plurality of image areas based on the initial blood flow image;
an acquisition module configured to acquire resolutions of the plurality of image areas;
a validation module configured to validate an overlapping region of the dynamic speckle and the static speckle based on a resolution of the plurality of image regions.
8. The blood flow imaging system of claim 6 or 7, wherein the hard scope comprises at least one of a brain scope, a ventricular scope, a neuroscope, a nasal scope.
9. A computer device, comprising:
a memory configured to store computer instructions executable on the processor; and
a processor configured to image based on the blood flow imaging method of any one of claims 1 to 5 when executing the computer instructions.
10. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, implements the blood flow imaging method according to any one of claims 1 to 5.
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