CN109461193B - Coordinate transformation method and device for scanning data of ultrasonic equipment and related equipment - Google Patents
Coordinate transformation method and device for scanning data of ultrasonic equipment and related equipment Download PDFInfo
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Abstract
The application discloses a coordinate transformation method of scanning data of ultrasonic equipment, which comprises the steps of receiving the scanning data of an ultrasonic probe and acquiring characteristic information of the ultrasonic probe; establishing a physical coordinate system on a scanning plane of the ultrasonic probe, and calculating the scanning data and the characteristic information to obtain a physical coordinate of each scanning point in a scanning line; and calculating the physical coordinates through a preset mapping relation to obtain the display coordinates of each scanning point in the scanning line on the display equipment. The application also discloses a coordinate transformation device, equipment and a system for scanning data of the ultrasonic equipment and a computer readable storage medium. The technical scheme that this application realized can effectively avoid the deviation problem between ultrasonic imaging in-process graphic assembly and the image, has further improved ultrasonic imaging's accuracy.
Description
Technical Field
The application relates to the technical field of ultrasonic diagnosis, in particular to a coordinate transformation method of scanning data of ultrasonic equipment, and further relates to a coordinate transformation device, equipment, a system and a computer readable storage medium of the scanning data of the ultrasonic equipment.
Background
The ultrasonic imaging is to display the scanned data of the ultrasonic equipment on a display screen with a specific resolution after a series of processing, and relates to a process of acquiring and mapping image data from the equipment to display, wherein a user can designate or move related marks as required in the display process to construct various graphic components.
In the prior art, aiming at different scanning scenes, such as a linear array, a convex array, a phased array, a ring array and the like, the data conversion and other processing are carried out on each graphic assembly through scanning, physical and display mapping relations in three coordinate planes of a scanning coordinate system, a physical coordinate system and a display coordinate system and in combination with geometry according to the use and mark requirements of each graphic assembly. However, this implementation does not have a uniform calculation method among the multifunctional modules of the ultrasound imaging apparatus, which is prone to cause errors between the graphic assembly and the image in the imaging process. For example, in a Color scope mode, a process of converting a sampling frame into pixels according to a dot line is an independent calculation process, while a process of calculating a depth scale is also independently completed, and because the two calculation modes are not uniform, and a defect exists in accuracy calculation, the depth position of the sampling frame cannot correctly correspond to the scale of the depth scale during imaging display, so that deviation exists in the imaging process, and meanwhile, an error also exists with an image calculated by an independent DSC (Digital Scan Converter), and a situation that the frame and the image are not matched occurs. In addition, for different ultrasonic platforms, due to the fact that data processing schemes are not uniform, the problem of poor reusability also exists.
Therefore, how to effectively avoid the deviation problem between the graphic assembly and the image in the ultrasonic imaging process so as to further improve the imaging accuracy is a problem to be solved by those skilled in the art.
Disclosure of Invention
The method can effectively avoid the problem of deviation between a graphic component and an image in the ultrasonic imaging process, and further improve the accuracy of ultrasonic imaging; another object of the present application is to provide a coordinate transformation apparatus, an apparatus, a system and a computer-readable storage medium for scanning data of an ultrasound apparatus, which also have the above-mentioned advantages.
In order to achieve the above object, the present application provides a coordinate transformation method for scan data of an ultrasound apparatus, the method comprising:
receiving scanning data of an ultrasonic probe, and acquiring characteristic information of the ultrasonic probe;
establishing a physical coordinate system on a scanning plane of the ultrasonic probe, and calculating the scanning data and the characteristic information to obtain a physical coordinate of each scanning point in a scanning line;
and calculating the physical coordinates through a preset mapping relation to obtain the display coordinates of each scanning point in the scanning line on the display equipment.
Preferably, the scanning data includes a scanning system number for marking each scanning line, and a scanning system number for marking each scanning point in each scanning line.
Preferably, if the ultrasonic probe is a linear array ultrasonic probe, the establishing a physical coordinate system on a scanning plane of the ultrasonic probe, and calculating the scanning data and the characteristic information to obtain a physical coordinate of each scanning point in a scanning line, includes:
establishing the physical coordinate system by taking the central point of the linear array ultrasonic probe as a coordinate origin and taking a straight line where the probe array element is positioned as a transverse axis;
calculating the scanning data and the characteristic information according to a formula to obtain the physical coordinates of each scanning point in the scanning line:
y 1 ＝P 1 *l 1 *cosα+fStarDepth；
wherein, P 1 For said scanning system number, M 1 The number is the scanning line number; l. the 1 Is the point distance between two adjacent scanning points on the scanning line, alpha is the deflection angle of the scanning line, fStarDepth is the initial scanning depth, and m is the scanning depth 1 Is the line density, N, of the scan line 1 The distance between the array elements of the linear array ultrasonic probe.
Preferably, if the ultrasonic probe is an nonlinear array ultrasonic probe, establishing a physical coordinate system on a scanning plane of the ultrasonic probe, and calculating the scanning data and the characteristic information to obtain a physical coordinate of each scanning point in a scanning line, including:
establishing the physical coordinate system by taking the central point of the image starting position of the nonlinear array ultrasonic probe as a coordinate origin and taking the straight line where the image starting position is located as a transverse axis;
calculating the scanning data and the characteristic information according to a formula to obtain the physical coordinates of each scanning point in the scanning line:
wherein, P 2 For scanning the system start point number, M 2 The scanning system line number is obtained; l. the 2 And (3) representing the point distance between two adjacent scanning points on the scanning line, wherein R is the radius of the probe, fStarDepth is the initial scanning depth, fscAngle is the scanning field angle, and M is the line number of the scanning line.
Preferably, the preset mapping relationship is as follows:
wherein, X is the abscissa of each scanning point on the display plane, and Y is the ordinate of each scanning point on the display plane; when the ultrasonic probe is a linear array ultrasonic probe, x is x 1 Y is y 1 When the ultrasonic probe is an nonlinear array probe, x is x 2 Y is y 2 (ii) a fEndDepth is the ending scan depth, fStarDepth is the starting scan depth, and PX is the total height of coordinates of the display device.
Preferably, the coordinate transformation method for the scanning data of the ultrasonic equipment further comprises the following steps:
displaying on the display coordinates through the display equipment to obtain an ultrasonic image;
and saving the ultrasonic image to a storage medium.
In order to achieve the above object, the present application provides a coordinate transformation apparatus for scanning data of an ultrasound device, the apparatus comprising:
the information acquisition module is used for receiving scanning data of the ultrasonic probe and acquiring characteristic information of the ultrasonic probe;
the physical mapping module is used for establishing a physical coordinate system on a scanning plane of the ultrasonic probe, calculating the scanning data and the characteristic information and obtaining the physical coordinate of each scanning point in a scanning line;
and the display mapping module is used for calculating the physical coordinates through a preset mapping relation to obtain the display coordinates of each scanning point in the scanning line on the display equipment.
In order to achieve the above object, the present application provides a coordinate transformation apparatus for scanning data by an ultrasound apparatus, the apparatus comprising:
a memory for storing a computer program;
and the processor is used for realizing the steps of any one of the coordinate transformation methods of the scanning data of the ultrasonic equipment when the computer program is executed.
In order to achieve the above object, the present application provides a coordinate transformation system for scanning data of an ultrasound apparatus, the system comprising:
the ultrasonic equipment is used for realizing the coordinate transformation method of the scanning data of any ultrasonic equipment;
and the ultrasonic probe is used for sending scanning data to the ultrasonic equipment.
To achieve the above object, the present application provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of any one of the above methods for coordinate transformation of ultrasound equipment scanning data.
The coordinate transformation method of the scanning data of the ultrasonic equipment comprises the steps of receiving the scanning data of an ultrasonic probe and acquiring characteristic information of the ultrasonic probe; establishing a physical coordinate system on a scanning plane of the ultrasonic probe, and calculating the scanning data and the characteristic information to obtain a physical coordinate of each scanning point in a scanning line; and calculating the physical coordinates through a preset mapping relation to obtain the display coordinates of each scanning point in the scanning line on the display equipment.
Therefore, the technical scheme provided by the application abstracts the processes of data acquisition, data conversion and data display into a data coordinate conversion process among a scanning plane, a physical plane and a display plane, establishes a physical coordinate system on the scanning plane after the scanning data is obtained, realizes the data conversion from the scanning plane to the physical plane through geometric operation, converts the obtained data of the physical plane into the data of the display plane based on the preset mapping relation between the physical plane and the display plane, and realizes the coordinate conversion of the scanning data of the ultrasonic equipment.
The coordinate transformation device, the equipment, the system and the computer readable storage medium for the scanning data of the ultrasonic equipment have the beneficial effects, and are not described in detail herein.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flowchart of a coordinate transformation method for scanning data of an ultrasound device according to the present application;
fig. 2 is a plan view of a scan of a linear array ultrasound probe provided herein;
fig. 3 is a mapping diagram of a scanning plane and a physical plane of a linear array ultrasonic probe provided in the present application;
fig. 4 is a mapping diagram of a scanning plane and a physical plane of an nonlinear array ultrasonic probe provided in the present application;
fig. 5 is a schematic structural diagram of a coordinate transformation apparatus for scanning data of an ultrasound device according to the present application;
FIG. 6 is a schematic structural diagram of an ultrasound apparatus provided herein;
fig. 7 is a schematic structural diagram of a coordinate transformation system for scanning data of an ultrasound apparatus according to the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The core of the application is to provide a coordinate transformation method for scanning data of ultrasonic equipment, which can effectively avoid the problem of deviation between a graphic component and an image in the ultrasonic imaging process and further improve the accuracy of ultrasonic imaging; another core of the present application is to provide a coordinate transformation apparatus, an apparatus, a system and a computer-readable storage medium for scanning data of an ultrasound apparatus, which also have the above-mentioned advantages.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the prior art, because a unified calculation method is not available among all the multifunctional modules, errors exist between a graphic assembly and an image in the imaging process, and the problem of low accuracy of ultrasonic imaging is caused. Therefore, in order to solve the technical problems, the application provides a coordinate transformation method for scanning data of ultrasonic equipment, and the processes of data acquisition, data conversion and data display are abstracted into the data coordinate transformation process among a scanning plane, a physical plane and a display plane, so that the process of acquiring and displaying image data from equipment is realized, the problem of deviation between a graphic component and an image in the ultrasonic imaging process is effectively avoided, and the accuracy of later-stage ultrasonic imaging is improved.
Wherein, the scanning plane is a cross section when the ultrasonic probe performs scanning operation; the physical plane is a physical coordinate section corresponding to the cross section and corresponds to the depth and the width of two dimensions; the display plane is a two-dimensional display plane displayed on a display device by scanning an acoustic image, and the unit of the display plane is a pixel corresponding to the width and the height.
Referring to fig. 1, fig. 1 is a schematic flowchart of a coordinate transformation method for scanning data of an ultrasound apparatus provided in the present application, where the method may include:
s10: receiving scanning data of an ultrasonic probe, and acquiring characteristic information of the ultrasonic probe;
in the ultrasonic imaging process, firstly, data acquisition is carried out through an ultrasonic probe, then, subsequent coordinate transformation processing is carried out on the acquired data, and ultrasonic imaging is realized.
In addition, the coordinate transformation process of the scanning data needs to be calculated by combining the characteristic information of the ultrasonic probes, the types of the ultrasonic probes are not unique, such as linear array ultrasonic probes, nonlinear array ultrasonic probes and the like, the different types of ultrasonic probes have different characteristic information, specifically, the ultrasonic probes are provided with a plurality of transmitting array elements, each array element can transmit a scanning sound beam when scanning, each corresponding scanning line has a corresponding line number, scanning points on each scanning line have corresponding point numbers, and the scanning ranges of the scanning sound beams are different along with the different types of the ultrasonic probes. Therefore, when the ultrasound device receives the scanning data sent by the ultrasound probe, it needs to further acquire the characteristic information of the ultrasound device. Therefore, the ultrasonic equipment can perform subsequent data processing according to the obtained scanning data and the characteristic information, and coordinate transformation of the scanning data in three plane coordinate systems is realized.
In a preferred form of the present application, the scanning data may include a scanning system number for marking each scanning line and a scanning system number for marking each scanning point in each scanning line. The scanning system line number for marking each scanning line is the line number marked in the scanning system by each scanning line, and the scanning system point number for marking each scanning point in each scanning line is the point number marked in the scanning system by each scanning point on each scanning line. Therefore, according to the scanning system line number and the scanning system point number, the data of each scanning point on the scanning plane can be converted into the data of the display plane.
S11: establishing a physical coordinate system on a scanning plane of the ultrasonic probe, calculating scanning data and characteristic information, and obtaining a physical coordinate of each scanning point in a scanning line;
the method aims to realize the coordinate transformation of the scanned data from the scanning plane to the physical plane. In particular, the scan lines and scan points of the ultrasound probe form a scan plane, i.e. a corresponding scan coordinate system is mapped. Firstly, a physical coordinate system is established in the scanning plane, and further, the scanning data and the characteristic information obtained in the step S10 are calculated according to the corresponding transformation rule, so as to obtain the coordinates of each scanning point on each scanning line in the scanning plane in the physical coordinate system, that is, the physical coordinates.
The transformation rules are coordinate mapping relations between the scanning planes and the physical planes, for different types of ultrasonic probes, the transformation rules can correspond to different types of ultrasonic probes, specifically, technical personnel can set the transformation rules in advance according to actual conditions and store the transformation rules in corresponding storage media, and in the actual application process, the corresponding transformation rules can be called according to the acquired characteristic information of the ultrasonic probes.
S12: and calculating the physical coordinates through a preset mapping relation to obtain the display coordinates of each scanning point in the scanning line on the display equipment.
This step is intended to convert the data obtained at S11 from the physical plane to the display plane. Specifically, the physical coordinates of each scanning point on each scanning line can be calculated through a preset mapping relationship, so as to obtain corresponding display coordinates, where the display coordinates are the coordinates of each scanning point on each scanning line on the display device, that is, the coordinates in the display coordinate system.
The preset mapping relationship is a coordinate mapping relationship between the physical plane and the display plane, and can be preset and stored in a corresponding storage medium by a technician according to an actual situation and directly called in an actual data processing process.
It should be noted that the storage medium for storing the preset mapping relationship and the storage medium for storing the transformation rule may be the same medium, or may be stored separately, and the implementation of the present technical solution is not affected. In the application, the preset mapping relation and the transformation rule are stored in the same storage medium, a unified functional interface is provided, and calling is performed according to the operation process, so that the development period is effectively saved, and the workload caused by complex coordinate transformation is avoided.
As a preferred embodiment, the coordinate transformation method of the scanning data of the ultrasonic equipment may further include: displaying on the display coordinates through a display device to obtain an ultrasonic image; the ultrasound image is saved to a storage medium.
The embodiment aims to realize the display of the display coordinates to complete the ultrasonic imaging and the saving of the corresponding ultrasonic image. Specifically, through the operation process in the above embodiment, the coordinate conversion of the scanning data of the ultrasonic probe from the scanning plane to the display plane is realized, the display coordinates of each scanning point on each scanning line on the display plane are obtained, and at this time, the display coordinates can be sent to the display device for displaying, and the corresponding ultrasonic image is obtained, so that the ultrasonic imaging is completed. Further, in order to facilitate analysis and processing of subsequent images, they may be saved to a storage medium, or subjected to printing processing, or the like.
The method for transforming the coordinates of the scanned data of the ultrasonic equipment provided by the embodiment abstracts the processes of acquiring the data, converting the data and displaying the data into the processes of transforming the data coordinates of a scanned plane, a physical plane and a display plane, establishes a physical coordinate system on the scanned plane after the scanned data is obtained, realizes the data transformation from the scanned plane to the physical plane through geometric operation, transforms the obtained data of the physical plane into the data of the display plane based on the preset mapping relation between the physical plane and the display plane, and realizes the coordinate transformation of the scanned data of the ultrasonic equipment.
On the basis of the above embodiments, the embodiments of the present application provide a coordinate conversion process from a scanning plane to a physical plane for respective corresponding scanning data according to different types of ultrasound probes.
In a preferred embodiment, if the ultrasound probe is a linear array ultrasound probe, the step S11 may include: establishing a physical coordinate system by taking a central point of the linear array ultrasonic probe as a coordinate origin and taking a straight line where an array element of the probe is positioned as a transverse axis; calculating the scanning data and the characteristic information according to the following formula to obtain the physical coordinates of each scanning point in the scanning line:
y 1 ＝P 1 *l 1 *cosα+fStarDepth；
wherein, P 1 For scanning the system point number, M 1 Scanning the serial number; l 1 Is the point distance between two adjacent scanning points on the scanning line, alpha is the deflection angle of the scanning line, fStarDepth is the initial scanning depth, m 1 Line density, N, for scanning lines 1 The distance between the array elements of the linear array ultrasonic probe.
Specifically, please refer to fig. 2, fig. 2 is a plan view of a scanning plan of a linear array ultrasonic probe provided in the present application, where N is the number of array elements, and M is 1 Scanning the serial number; further, on the scanning plane, a physical coordinate system is established by taking the central point as the origin of coordinates and taking the straight line where the array elements of the probe are located as the horizontal axis, and a figure 3 is obtained, wherein the figure 3 is the present applicationPlease provide a mapping diagram of a scanning plane and a physical plane of a linear array ultrasonic probe, wherein α is a deflection angle of the scanning line in a physical coordinate system, so that scanning data of the linear array ultrasonic probe can be converted from the scanning plane to the physical plane based on the above formula, and a physical coordinate S (x) of each scanning point on each scanning line in the physical coordinate system is obtained (x is a coordinate of the scanning point in the physical coordinate system) 1 ,y 1 ). Wherein, in the above formula, P 1 And M 1 For scanning data,/ 1 ，α，fStarDepth，m 1 ，N 1 The characteristic information of the linear array ultrasonic probe is obtained.
In another preferred embodiment, if the ultrasound probe is an nonlinear array ultrasound probe, the step S11 may include: establishing a physical coordinate system by taking a central point of an image initial position of the nonlinear array ultrasonic probe as a coordinate origin and taking a straight line where the image initial position is located as a transverse axis; calculating the scanning data and the characteristic information according to the following formula to obtain the physical coordinates of each scanning point in the scanning line:
wherein, P 2 For scanning the starting point number of the system, M 2 Scanning the serial number; l. the 2 The distance between two adjacent scanning points on the scanning line is defined, R is the radius of the probe, fStarDepth is the initial scanning depth, fscAngle is the scanning field angle, and M is the line number of the scanning line.
Specifically, for the nonlinear array ultrasonic probe, a scanning plane of the nonlinear array ultrasonic probe can be abstracted into a two-dimensional sector graph, on the scanning plane, a central point of an image starting position is taken as a coordinate origin, a straight line where the image starting position is located is taken as a horizontal axis, a physical coordinate system is established, a graph 4 is obtained, the graph 4 is a mapping graph of the scanning plane and the physical plane of the nonlinear array ultrasonic probe provided by the application, wherein fscAngle is a scanning field angle, namely a probe scanning angleDegree, fStarDepth for the starting scan depth, fEndDepth for the ending scan depth, M 2 The number of the scanning lines is changed, therefore, the scanning data of the nonlinear scanning probe can be converted from the scanning plane to the physical plane based on the formula, and the physical coordinate D (x) of each scanning point on each scanning line in the physical coordinate system is obtained 2 ,y 2 ). Wherein, in the above formula, P 2 And M 2 To scan the data,/ 2 And R, fStarDepth, fscAngle and M are characteristic information of the nonlinear array ultrasonic probe.
In addition, LDistAngle shown in fig. 4 is the scan line to scan line angle, wherein,
theta is shown as the included angle of the distance of the scanning line from the center line, where theta = M 2 * LDistAngle corresponding to the above formula
Shown as fRadius represents the convex array/phased array difference, where the convex array corresponds to a non-semicircular sector and the phased array corresponds to a semicircle.
In conclusion, for different types of ultrasonic probes, different coordinate transformation rules can be adopted, and coordinate transformation from a scanning plane to a physical plane of corresponding scanning data is realized.
On the basis of the above embodiments, the present application provides a specific preset mapping relationship, that is, coordinate data is converted from a physical plane to a display plane based on the following formula:
wherein, X is the abscissa of each scanning point on the display plane, and Y is the ordinate of each scanning point on the display plane; when the ultrasonic probe is a linear array ultrasonic probe, x is x 1 Y is y 1 When the ultrasonic probe is an nonlinear array probe, x is x 2 Y is y 2 (ii) a fEndDepth is the ending scan depth, fStarDepth is the starting scan depth, and PX is the total height of coordinates of the display device.
Specifically, the different types of the ultrasonic probes do not affect the preset mapping relationship between the physical coordinate plane and the display plane, and all the types of the ultrasonic probes can be realized based on the above formula, and the corresponding display coordinates (X, Y) can be obtained by substituting the physical coordinates (X, Y) of the ultrasonic probes into the above formula. In the above formula, (fneddepth-fstartepth)/PX is the pixel point distance in the display coordinate system, i.e. the distance between every two pixels in the display coordinate system.
Therefore, based on the preset mapping relation, the coordinate conversion of the coordinate data from the physical plane to the display plane is realized.
To solve the above problem, please refer to fig. 5, fig. 5 is a schematic structural diagram of a coordinate transformation apparatus for scanning data of an ultrasound device according to the present application, where the apparatus may include:
the information acquisition module 1 is used for receiving scanning data of the ultrasonic probe and acquiring characteristic information of the ultrasonic probe;
the physical mapping module 2 is used for establishing a physical coordinate system on a scanning plane of the ultrasonic probe, calculating scanning data and characteristic information and obtaining a physical coordinate of each scanning point in a scanning line;
and the display mapping module 3 is used for calculating the physical coordinates through a preset mapping relation to obtain the display coordinates of each scanning point in the scanning line on the display device.
As a preferred embodiment, the apparatus may further comprise:
the display module is used for displaying on the display coordinates through the display equipment to obtain an ultrasonic image;
and the storage module is used for storing the ultrasonic image to a storage medium.
For the introduction of the apparatus provided in the present application, please refer to the method embodiments described above, which are not described herein again.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an ultrasound apparatus provided in the present application, where the ultrasound apparatus may include:
a memory 11 for storing a computer program;
and the processor 12 is used for realizing the steps of any one of the coordinate transformation methods of the scanning data of the ultrasonic equipment when executing the computer program.
For the introduction of the device provided in the present application, please refer to the above method embodiment, which is not described herein again.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a coordinate transformation system for scanning data of an ultrasound apparatus according to the present application, where the system may include:
the ultrasonic apparatus 10 as described above is used for implementing the steps of any one of the coordinate transformation methods for scanning data by the ultrasonic apparatus;
an ultrasound probe 20 for sending scanning data to the ultrasound apparatus 10.
For the introduction of the system provided in the present application, please refer to the method embodiments described above, which are not described herein again.
The application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the above methods for coordinate transformation of ultrasound equipment scanning data can be implemented.
The computer-readable storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
For the introduction of the computer-readable storage medium provided in the present application, please refer to the above method embodiments, which are not described herein again.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The method, the device, the apparatus, the system, the proxy server and the computer-readable storage medium for transforming the coordinate of the scanning data of the ultrasound equipment provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, which also fall into the elements of the protection scope of the claims of the present application.
Claims (7)
1. A coordinate transformation method for scanning data of an ultrasonic device is characterized by comprising the following steps:
receiving scanning data of an ultrasonic probe, and acquiring characteristic information of the ultrasonic probe;
establishing a physical coordinate system on a scanning plane of the ultrasonic probe, and calculating the scanning data and the characteristic information to obtain a physical coordinate of each scanning point in a scanning line;
calculating the physical coordinates through a preset mapping relation to obtain display coordinates of each scanning point in the scanning line on display equipment;
the scanning data comprises scanning system line numbers for marking each scanning line, and scanning system point numbers for each scanning point in each scanning line;
if the ultrasonic probe is a linear array ultrasonic probe, establishing a physical coordinate system on a scanning plane of the ultrasonic probe, calculating the scanning data and the characteristic information, and obtaining the physical coordinate of each scanning point in a scanning line, wherein the physical coordinate system comprises:
establishing the physical coordinate system by taking the central point of the linear array ultrasonic probe as a coordinate origin and taking a straight line where the probe array element is positioned as a transverse axis;
calculating the scanning data and the characteristic information according to a formula to obtain the physical coordinates of each scanning point in the scanning line:
y 1 ＝P 1 *l 1 *cosα+fStarDepth；
wherein, P 1 For said scanning system number, M 1 The scanning system line number is obtained; l 1 The point distance between two adjacent scanning points on the scanning line is defined, alpha is the deflection angle of the scanning line, fStarDepth is the initial scanning depth, and m is the scanning depth 1 Is the line density of the scan line, N 1 The distance between the array elements of the linear array ultrasonic probe is the distance between the array elements of the linear array ultrasonic probe;
if the ultrasonic probe is an nonlinear array ultrasonic probe, establishing a physical coordinate system on a scanning plane of the ultrasonic probe, and calculating the scanning data and the characteristic information to obtain a physical coordinate of each scanning point in a scanning line, wherein the steps of:
establishing the physical coordinate system by taking the central point of the image starting position of the nonlinear array ultrasonic probe as a coordinate origin and taking the straight line where the image starting position is located as a transverse axis;
calculating the scanning data and the characteristic information according to a formula to obtain the physical coordinates of each scanning point in the scanning line:
wherein, P 2 For scanning the system start point number, M 2 The number is the scanning line number; l. the 2 And (3) the point distance between two adjacent scanning points on the scanning line, wherein R is the radius of the probe, fStarDepth is the initial scanning depth, fscAngle is the scanning field angle, and M is the line number of the scanning line.
2. The method of claim 1, wherein the predetermined mapping relationship is:
wherein, X is the abscissa of each scanning point on the display plane, and Y is the ordinate of each scanning point on the display plane; when the ultrasonic probe is a linear array ultrasonic probe, x is x 1 Y is y 1 When the ultrasonic probe is an nonlinear array probe, x is x 2 Y is y 2 (ii) a fEndDepth end scan depthDegree, fsatempth is the starting scan depth, PX is the coordinate total height of the display device.
3. The method of claim 2, further comprising:
displaying on the display coordinates through the display equipment to obtain an ultrasonic image;
and saving the ultrasonic image to a storage medium.
4. A coordinate transformation device for ultrasound equipment scanning data, which is used for realizing the steps of the coordinate transformation method for ultrasound equipment scanning data according to any one of claims 1 to 3.
5. An ultrasound apparatus, characterized in that the apparatus comprises:
a memory for storing a computer program;
a processor for implementing the steps of the method of coordinate transformation of ultrasound device scan data according to any of claims 1 to 3 when executing said computer program.
6. A coordinate transformation system for ultrasound device scan data, the system comprising:
the ultrasound device of claim 5, for implementing the steps of the coordinate transformation method of ultrasound device scanning data of any one of claims 1 to 3;
and the ultrasonic probe is used for sending scanning data to the ultrasonic equipment.
7. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method for coordinate transformation of ultrasound device scan data according to any one of claims 1 to 3.
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