CN116012522B - Three-dimensional imaging system for head, neck, jaw and face soft tissues, bones and blood vessels - Google Patents
Three-dimensional imaging system for head, neck, jaw and face soft tissues, bones and blood vessels Download PDFInfo
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- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 48
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 48
- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 48
- 238000003384 imaging method Methods 0.000 title claims abstract description 30
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims description 173
- 230000008859 change Effects 0.000 claims description 54
- 238000004590 computer program Methods 0.000 claims description 8
- 238000002591 computed tomography Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The application discloses a three-dimensional imaging system for head, neck, jaw and face soft tissues, bones and blood vessels, and relates to the technical field of three-dimensional imaging. The system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a plurality of CT images shot from a plurality of angles in the process of rotating an object to be imaged around the same axial direction; the extraction unit is used for extracting the edge contour of each CT image in the plurality of CT images to obtain contour lines; the determining unit is used for determining the rotation axis corresponding to each contour line based on the rotation axis of the object to be imaged; the combining unit is used for combining the plurality of contour lines based on the angles corresponding to the contour lines and the rotation axes corresponding to the contour lines in the plurality of contour lines to obtain a three-dimensional contour image which corresponds to the object to be imaged and consists of the plurality of contour lines; and the construction unit is used for constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image. The system disclosed by the application can generate three-dimensional images of head, neck, jaw and face soft tissues, bones and blood vessels.
Description
Technical Field
The application belongs to the technical field of three-dimensional imaging, and particularly relates to a three-dimensional imaging system for head, neck, jaw and face soft tissues, bones and blood vessels.
Background
In surgery, it is often necessary to image structures such as head, neck, jaw and face soft tissues, bones and blood vessels in order to facilitate viewing of the head, neck, jaw and face soft tissues, bones and blood vessels.
At present, imaging of structures such as head, neck, jaw and face soft tissues, bones and blood vessels is often performed by acquiring images of the structures such as head, neck, jaw and face soft tissues, bones and blood vessels through electronic computed tomography (Computed Tomography, CT), so as to analyze the head, neck, jaw and face soft tissues, bones and blood vessels according to the scanned CT influence, and to formulate corresponding therapeutic measures. However, the image obtained in such a manner is generally a two-dimensional image, and a three-dimensional stereoscopic image of head, neck, jaw and face soft tissues, bones, blood vessels, and the like cannot be clearly displayed, and thus, the image has limited functions when used for medical analysis.
Therefore, how to provide an effective solution to effectively display the three-dimensional stereoscopic images of the head, neck, jaw and face soft tissues, bones, blood vessels, etc. has become a challenge in the prior art.
Disclosure of Invention
The application aims to provide a three-dimensional imaging system of head, neck, jaw and face soft tissues, bones and blood vessels, which is used for solving the problems in the prior art.
In order to achieve the above purpose, the present application adopts the following technical scheme:
in a first aspect, the present application provides a three-dimensional imaging method of head, neck, jaw, face soft tissue, bone and blood vessels, comprising:
acquiring a plurality of CT images shot from a plurality of angles in the process of rotating an object to be imaged around the same axial direction, wherein the object to be imaged is head, neck, jaw and face soft tissues, bones or blood vessels;
extracting edge contours of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to the plurality of angles one by one;
determining a rotation axis corresponding to each contour line in the plurality of contour lines based on the rotation axis of the object to be imaged;
combining the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines to obtain a three-dimensional contour image which corresponds to the object to be imaged and consists of the contour lines;
and constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image.
In one possible design, constructing a three-dimensional image corresponding to the object to be imaged based on the three-dimensional contour image includes:
sampling points on the contour lines in the three-dimensional contour image to obtain a plurality of sampling points;
determining a depth change curve between adjacent sampling points in the plurality of sampling points based on depth differences between adjacent sampling points in the plurality of sampling points;
and constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and the depth change curve between adjacent sampling points in the plurality of sampling points.
In one possible design, determining a depth profile between adjacent ones of the plurality of sampling points based on depth differences between adjacent ones of the plurality of sampling points includes:
determining a first depth change curve of adjacent sampling points in the x-axis direction based on the depth difference of the distances between the adjacent sampling points in the x-axis direction;
and determining a second depth change curve of the adjacent sampling points in the y-axis direction based on the depth difference of the distances between the adjacent sampling points in the y-axis direction.
In one possible design, constructing a three-dimensional image corresponding to the object to be imaged based on three-dimensional coordinates of each of the plurality of sampling points and a depth variation curve between adjacent sampling points of the plurality of sampling points includes:
constructing a first three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a first depth change curve of adjacent sampling points in the plurality of sampling points in the x-axis direction;
constructing a second three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a second depth change curve of the adjacent sampling points in the y-axis direction;
and superposing the first three-dimensional image and the second three-dimensional image to obtain a three-dimensional image corresponding to the target to be imaged.
In a second aspect, the present application provides a three-dimensional imaging system for head, neck, jaw, face soft tissue, bone and blood vessels, comprising:
the acquisition unit is used for acquiring a plurality of CT images shot from a plurality of angles in the process of rotating an object to be imaged around the same axial direction, wherein the object to be imaged is head, neck, jaw and face soft tissues, bones or blood vessels;
the extraction unit is used for extracting the edge contour of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to the plurality of angles one by one;
the determining unit is used for determining the rotation axis corresponding to each contour line in the plurality of contour lines based on the rotation axis of the object to be imaged;
a combination unit, configured to combine the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines, to obtain a three-dimensional contour image corresponding to the object to be imaged and composed of the plurality of contour lines;
and the construction unit is used for constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image.
In one possible design, the construction unit, when configured to construct a three-dimensional image corresponding to the object to be imaged based on the three-dimensional contour image, is specifically configured to:
sampling points on the contour lines in the three-dimensional contour image to obtain a plurality of sampling points;
determining a depth change curve between adjacent sampling points in the plurality of sampling points based on depth differences between adjacent sampling points in the plurality of sampling points;
and constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and the depth change curve between adjacent sampling points in the plurality of sampling points.
In one possible design, the construction unit is configured to, when determining the depth change curve between adjacent sampling points of the plurality of sampling points based on the depth differences between adjacent sampling points of the plurality of sampling points, specifically:
determining a first depth change curve of adjacent sampling points in the x-axis direction based on the depth difference of the distances between the adjacent sampling points in the x-axis direction;
and determining a second depth change curve of the adjacent sampling points in the y-axis direction based on the depth difference of the distances between the adjacent sampling points in the y-axis direction.
In one possible design, the construction unit is specifically configured to, when constructing the three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each of the plurality of sampling points and the depth change curve between adjacent sampling points in the plurality of sampling points:
constructing a first three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a first depth change curve of adjacent sampling points in the plurality of sampling points in the x-axis direction;
constructing a second three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a second depth change curve of the adjacent sampling points in the y-axis direction;
and superposing the first three-dimensional image and the second three-dimensional image to obtain a three-dimensional image corresponding to the target to be imaged.
In a third aspect, the present application provides an electronic device, including a memory, a processor and a transceiver, which are sequentially communicatively connected, where the memory is configured to store a computer program, and the transceiver is configured to send and receive a message, and the processor is configured to read the computer program, and perform the three-dimensional imaging method of head, neck, jaw face soft tissue, bone and blood vessels according to the first aspect.
In a fourth aspect, the present application provides a computer readable storage medium having instructions stored thereon that, when executed on a computer, perform the three-dimensional imaging method of head, neck, jaw, face soft tissue, bone and blood vessels of the first aspect.
In a fifth aspect, the application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the three-dimensional imaging method of head, neck, jaw, face soft tissue, bone and blood vessels according to the first aspect.
The beneficial effects are that:
according to the three-dimensional imaging scheme of the head, neck, jaw and face soft tissues, bones and blood vessels, a plurality of CT images shot from a plurality of angles in the process of rotating around the same axial direction of an object to be imaged can be obtained, and the object to be imaged is the head, neck, jaw and face soft tissues, bones or blood vessels; extracting edge contours of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to a plurality of angles one by one; determining a rotation axis corresponding to each contour line in a plurality of contour lines based on the rotation axis of the object to be imaged; combining the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines to obtain a three-dimensional contour image which corresponds to the object to be imaged and consists of the contour lines; and then constructing a three-dimensional image corresponding to the object to be imaged based on the three-dimensional contour image. Therefore, three-dimensional images of the head, neck, jaw and face soft tissues, bones and blood vessels can be generated, so that in a surgical operation, the three-dimensional images of the head, neck, jaw and face soft tissues, bones and blood vessels and the like can be clearly observed, and a sufficient reference basis is provided for subsequent treatment.
Drawings
Fig. 1 is a flowchart of a three-dimensional imaging method of head, neck, jaw and face soft tissues, bones and blood vessels according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a three-dimensional imaging system for head, neck, jaw and face soft tissues, bones and blood vessels according to an embodiment of the present application;
fig. 3 is a schematic block diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the present application will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art. It should be noted that the description of these examples is for aiding in understanding the present application, but is not intended to limit the present application.
Examples:
the first aspect of the present embodiment provides a three-dimensional imaging method of head, neck, jaw and face soft tissue, bone and blood vessel, which can be performed by, but not limited to, a computer device with a certain computing resource, for example, an electronic device such as a personal computer, a smart phone, a tablet computer or a personal digital assistant, so that in a surgical operation, three-dimensional stereoscopic images of head, neck, jaw and face soft tissue, bone and blood vessel can be clearly observed, and further a sufficient reference basis can be provided for subsequent treatment.
As shown in fig. 1, the three-dimensional imaging method of head, neck, jaw and face soft tissue, bone and blood vessel provided in the first aspect of the present embodiment may include, but is not limited to, the following steps:
s101, acquiring a plurality of CT images shot from a plurality of angles in the process that an object to be imaged rotates around the same axial direction.
Wherein the object to be imaged is head, neck, jaw and face soft tissue, bones or blood vessels.
In the embodiment of the application, when the image of the object to be imaged is acquired, the object to be imaged can rotate around the same axial direction, and then the CT images of the object to be imaged are acquired through the same CT scanning equipment, so that a plurality of CT images corresponding to the object to be imaged at a plurality of different angles are obtained.
When acquiring CT images of an object to be imaged, the angle difference corresponding to adjacent CT images should be kept consistent, and the angle difference should not be too large, for example, a CT image can be taken every 10 degrees. It is understood that in other embodiments, the corresponding angle difference between adjacent CT images may take other values.
In one or more embodiments, the CT image of the target to be imaged may be acquired, or the target to be imaged may be stationary, but the CT scanning device rotates around the target to be imaged, so as to acquire a plurality of CT images corresponding to a plurality of different angles.
S102, extracting edge contours of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to a plurality of angles one by one.
For each CT image in the CT images, the edge contour of each CT image in the CT images can be extracted by a contour extraction technology, so as to obtain a plurality of contour lines corresponding to a plurality of angles one by one.
In the embodiment of the present application, when extracting the contour of the CT image, the contour extraction may be implemented by the existing contour extraction technology, which is not described in detail in the embodiment of the present application.
And S103, determining the rotation axis corresponding to each contour line in the plurality of contour lines based on the rotation axis of the object to be imaged.
The rotation axis corresponding to the contour line corresponds to the rotation axis of the target to be imaged in the CT image corresponding to the contour line.
And S104, combining the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines to obtain a three-dimensional contour image which corresponds to the object to be imaged and consists of the contour lines.
In the embodiment of the application, a three-dimensional coordinate system can be established and a plurality of contour lines can be combined in the three-dimensional coordinate system. When the contour lines are combined, the rotation axes corresponding to the contour lines are overlapped, and the setting angle of each contour line in the contour lines is set according to the corresponding angle, so that a three-dimensional contour image formed by the contour lines can be formed in a three-dimensional coordinate system.
S105, constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image.
Specifically, constructing a three-dimensional image corresponding to the object to be imaged based on the three-dimensional contour image may include the following steps S1051 to S1053.
And S1051, sampling points on the contour lines in the three-dimensional contour image to obtain a plurality of sampling points.
When sampling points on the contour line, the distance between the sampling points is not determined to be too large, so that the follow-up reconstructed three-dimensional image has higher precision.
S1052, determining a depth change curve between adjacent sampling points based on depth differences between the adjacent sampling points.
The distance between adjacent sampling points is relatively close, so that the depth change curve between adjacent sampling points can be approximately seen as a uniform change curve, and the depth change curve between adjacent sampling points in the x-axis and y-axis directions (namely, the change curve in the z-axis direction) can be seen as a uniform change curve based on the condition, so that the first depth change curve between adjacent sampling points in the x-axis direction and the second depth change curve between adjacent sampling points in the y-axis direction can be determined.
Specifically, a first depth change curve of adjacent sampling points in the x-axis direction of the plurality of sampling points may be determined based on a depth difference of a distance between adjacent sampling points in the x-axis direction of the plurality of sampling points. And determining a second depth change curve of the adjacent sampling points in the y-axis direction based on the depth difference of the distances between the adjacent sampling points in the y-axis direction.
S1053, constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and the depth change curve between the adjacent sampling points in the plurality of sampling points.
In the embodiment of the application, when the first three-dimensional image corresponding to the target to be imaged is constructed, the first three-dimensional image corresponding to the target to be imaged can be constructed based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and the first depth change curve of the adjacent sampling points in the x-axis direction. And then constructing a second three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a second depth change curve of the adjacent sampling points in the y-axis direction, and finally superposing the first three-dimensional image and the second three-dimensional image to obtain a three-dimensional image corresponding to the target to be imaged.
The three-dimensional imaging method of the head, neck, jaw and face soft tissues, bones and blood vessels is characterized in that the head, neck, jaw and face soft tissues, bones or blood vessels are obtained by taking a plurality of CT images shot from a plurality of angles in the process that the object to be imaged rotates around the same axial direction; extracting edge contours of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to a plurality of angles one by one; determining a rotation axis corresponding to each contour line in a plurality of contour lines based on the rotation axis of the object to be imaged; combining the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines to obtain a three-dimensional contour image which corresponds to the object to be imaged and consists of the contour lines; and then constructing a three-dimensional image corresponding to the object to be imaged based on the three-dimensional contour image. Therefore, three-dimensional images of the head, neck, jaw and face soft tissues, bones and blood vessels can be generated, so that in a surgical operation, the three-dimensional images of the head, neck, jaw and face soft tissues, bones and blood vessels and the like can be clearly observed, and a sufficient reference basis is provided for subsequent treatment. Meanwhile, when the three-dimensional image is built, a first three-dimensional image corresponding to a target to be imaged is built based on three-dimensional coordinates of each sampling point in the plurality of sampling points and a first depth change curve of adjacent sampling points in the plurality of sampling points in the x-axis direction. And then constructing a second three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and the second depth change curve of the adjacent sampling points in the y-axis direction, and finally superposing the first three-dimensional image and the second three-dimensional image to obtain a three-dimensional image corresponding to the target to be imaged, wherein the constructed three-dimensional image considers the depth change curve of the adjacent sampling points in the x-axis direction and the depth change curve of the adjacent sampling points in the y-axis direction, so that the constructed three-dimensional image is closer to the target to be imaged, and the accuracy of the constructed three-dimensional image is ensured.
Referring to fig. 2, a second aspect of the embodiment of the present application provides a three-dimensional imaging system for head, neck, jaw and face soft tissue, bone and blood vessel, the three-dimensional imaging system for head, neck, jaw and face soft tissue, bone and blood vessel comprising:
the acquisition unit is used for acquiring a plurality of CT images shot from a plurality of angles in the process of rotating an object to be imaged around the same axial direction, wherein the object to be imaged is head, neck, jaw and face soft tissues, bones or blood vessels;
the extraction unit is used for extracting the edge contour of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to the plurality of angles one by one;
the determining unit is used for determining the rotation axis corresponding to each contour line in the plurality of contour lines based on the rotation axis of the object to be imaged;
a combination unit, configured to combine the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines, to obtain a three-dimensional contour image corresponding to the object to be imaged and composed of the plurality of contour lines;
and the construction unit is used for constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image.
In one possible design, the construction unit, when configured to construct a three-dimensional image corresponding to the object to be imaged based on the three-dimensional contour image, is specifically configured to:
sampling points on the contour lines in the three-dimensional contour image to obtain a plurality of sampling points;
determining a depth change curve between adjacent sampling points in the plurality of sampling points based on depth differences between adjacent sampling points in the plurality of sampling points;
and constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and the depth change curve between adjacent sampling points in the plurality of sampling points.
In one possible design, the construction unit is configured to, when determining the depth change curve between adjacent sampling points of the plurality of sampling points based on the depth differences between adjacent sampling points of the plurality of sampling points, specifically:
determining a first depth change curve of adjacent sampling points in the x-axis direction based on the depth difference of the distances between the adjacent sampling points in the x-axis direction;
and determining a second depth change curve of the adjacent sampling points in the y-axis direction based on the depth difference of the distances between the adjacent sampling points in the y-axis direction.
In one possible design, the construction unit is specifically configured to, when constructing the three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each of the plurality of sampling points and the depth change curve between adjacent sampling points in the plurality of sampling points:
constructing a first three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a first depth change curve of adjacent sampling points in the plurality of sampling points in the x-axis direction;
constructing a second three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a second depth change curve of the adjacent sampling points in the y-axis direction;
and superposing the first three-dimensional image and the second three-dimensional image to obtain a three-dimensional image corresponding to the target to be imaged.
The working process, working details and technical effects of the system provided in the second aspect of the present embodiment may be referred to in the first aspect of the present embodiment, and are not described herein.
As shown in fig. 3, a third aspect of the embodiment of the present application provides an electronic device, which includes a memory, a processor and a transceiver that are sequentially communicatively connected, where the memory is configured to store a computer program, the transceiver is configured to send and receive a message, and the processor is configured to read the computer program, and perform the three-dimensional imaging method of the head, neck, jaw, face soft tissue, bone and blood vessel according to the first aspect of the embodiment.
By way of specific example, the Memory may include, but is not limited to, random Access Memory (RAM), read Only Memory (ROM), flash Memory (Flash Memory), first-in-first-out Memory (FIFO), and/or first-in-last-out Memory (FILO), etc.; the processor may not be limited to a processor adopting architecture such as a microprocessor, ARM (Advanced RISC Machines), X86, etc. of the model STM32F105 series or a processor integrating NPU (neural-network processing units); the transceiver may be, but is not limited to, a WiFi (wireless fidelity) wireless transceiver, a bluetooth wireless transceiver, a general packet radio service technology (General Packet Radio Service, GPRS) wireless transceiver, a ZigBee protocol (low power local area network protocol based on the ieee802.15.4 standard), a 3G transceiver, a 4G transceiver, and/or a 5G transceiver, etc.
A fourth aspect of the present embodiment provides a computer-readable storage medium storing instructions comprising the three-dimensional imaging method of head, neck, jaw and face soft tissue, bone and blood vessel according to the first aspect of the present embodiment, i.e. the computer-readable storage medium has instructions stored thereon, which when run on a computer, perform the three-dimensional imaging method of head, neck, jaw and face soft tissue, bone and blood vessel according to the first aspect. The computer readable storage medium refers to a carrier for storing data, and may include, but is not limited to, a floppy disk, an optical disk, a hard disk, a flash Memory, and/or a Memory Stick (Memory Stick), etc., where the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
A fifth aspect of the present embodiment provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of three-dimensional imaging of head, neck, jaw and face soft tissue, bone and blood vessels according to the first aspect of the embodiment, wherein the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
The various embodiments described above are illustrative only, and the elements described as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present application without undue burden.
Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the application and is not intended to limit the scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. A three-dimensional imaging system of head, neck, jaw and face soft tissue, bone and blood vessels, comprising:
the acquisition unit is used for acquiring a plurality of CT images shot from a plurality of angles in the process of rotating an object to be imaged around the same axial direction, wherein the object to be imaged is head, neck, jaw and face soft tissues, bones or blood vessels;
the extraction unit is used for extracting the edge contour of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to the plurality of angles one by one;
the determining unit is used for determining the rotation axis corresponding to each contour line in the plurality of contour lines based on the rotation axis of the object to be imaged;
a combination unit, configured to combine the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines, to obtain a three-dimensional contour image corresponding to the object to be imaged and composed of the plurality of contour lines;
a construction unit for constructing a three-dimensional image corresponding to the object to be imaged based on the three-dimensional contour image;
the construction unit is used for constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image, and is specifically used for:
sampling points on the contour lines in the three-dimensional contour image to obtain a plurality of sampling points;
determining a depth change curve between adjacent sampling points in the plurality of sampling points based on depth differences between adjacent sampling points in the plurality of sampling points;
constructing a three-dimensional image corresponding to the target to be imaged based on three-dimensional coordinates of each sampling point in the plurality of sampling points and a depth change curve between adjacent sampling points in the plurality of sampling points;
the construction unit is used for determining a depth change curve between adjacent sampling points in the plurality of sampling points based on the depth difference between the adjacent sampling points in the plurality of sampling points, and is specifically used for:
determining a first depth change curve of adjacent sampling points in the x-axis direction based on the depth difference of the distances between the adjacent sampling points in the x-axis direction;
and determining a second depth change curve of the adjacent sampling points in the y-axis direction based on the depth difference of the distances between the adjacent sampling points in the y-axis direction.
2. The three-dimensional imaging system of head, neck, jaw and face soft tissue, bone and blood vessel according to claim 1, wherein the construction unit is configured to, when constructing a three-dimensional image corresponding to the object to be imaged based on three-dimensional coordinates of each of the plurality of sampling points and a depth change curve between adjacent sampling points of the plurality of sampling points:
constructing a first three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a first depth change curve of adjacent sampling points in the plurality of sampling points in the x-axis direction;
constructing a second three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a second depth change curve of the adjacent sampling points in the y-axis direction;
and superposing the first three-dimensional image and the second three-dimensional image to obtain a three-dimensional image corresponding to the target to be imaged.
3. A method for three-dimensional imaging of head, neck, jaw and face soft tissue, bone and blood vessels, comprising:
acquiring a plurality of CT images shot from a plurality of angles in the process of rotating an object to be imaged around the same axial direction, wherein the object to be imaged is head, neck, jaw and face soft tissues, bones or blood vessels;
extracting edge contours of each CT image in the plurality of CT images to obtain a plurality of contour lines corresponding to the plurality of angles one by one;
determining a rotation axis corresponding to each contour line in the plurality of contour lines based on the rotation axis of the object to be imaged;
combining the plurality of contour lines based on angles corresponding to the contour lines and rotation axes corresponding to the contour lines to obtain a three-dimensional contour image which corresponds to the object to be imaged and consists of the contour lines;
constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image;
constructing a three-dimensional image corresponding to the target to be imaged based on the three-dimensional contour image, including:
sampling points on the contour lines in the three-dimensional contour image to obtain a plurality of sampling points;
determining a depth change curve between adjacent sampling points in the plurality of sampling points based on depth differences between adjacent sampling points in the plurality of sampling points;
constructing a three-dimensional image corresponding to the target to be imaged based on three-dimensional coordinates of each sampling point in the plurality of sampling points and a depth change curve between adjacent sampling points in the plurality of sampling points;
determining a depth change curve between adjacent sampling points in the plurality of sampling points based on depth differences between adjacent sampling points in the plurality of sampling points, comprising:
determining a first depth change curve of adjacent sampling points in the x-axis direction based on the depth difference of the distances between the adjacent sampling points in the x-axis direction;
and determining a second depth change curve of the adjacent sampling points in the y-axis direction based on the depth difference of the distances between the adjacent sampling points in the y-axis direction.
4. The method of claim 3, wherein constructing a three-dimensional image corresponding to the object to be imaged based on three-dimensional coordinates of each of the plurality of sampling points and a depth profile between adjacent ones of the plurality of sampling points, comprises:
constructing a first three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a first depth change curve of adjacent sampling points in the plurality of sampling points in the x-axis direction;
constructing a second three-dimensional image corresponding to the target to be imaged based on the three-dimensional coordinates of each sampling point in the plurality of sampling points and a second depth change curve of the adjacent sampling points in the y-axis direction;
and superposing the first three-dimensional image and the second three-dimensional image to obtain a three-dimensional image corresponding to the target to be imaged.
5. An electronic device comprising a memory, a processor and a transceiver in communication with each other in sequence, wherein the memory is configured to store a computer program, the transceiver is configured to send and receive messages, and the processor is configured to read the computer program and perform the three-dimensional imaging method of head, neck, jaw, face soft tissue, bone and blood vessels according to any one of claims 3-4.
6. A computer readable storage medium having instructions stored thereon which, when executed on a computer, perform the three-dimensional imaging method of head, neck, jaw face soft tissue, bone and blood vessels of any one of claims 3 to 4.
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