CN110960248A - Loading method and system of CT positioning image - Google Patents
Loading method and system of CT positioning image Download PDFInfo
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- CN110960248A CN110960248A CN201911121402.6A CN201911121402A CN110960248A CN 110960248 A CN110960248 A CN 110960248A CN 201911121402 A CN201911121402 A CN 201911121402A CN 110960248 A CN110960248 A CN 110960248A
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- 238000000034 method Methods 0.000 claims abstract description 33
- 238000007689 inspection Methods 0.000 claims abstract description 20
- 238000010200 validation analysis Methods 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000002591 computed tomography Methods 0.000 description 22
- 238000002600 positron emission tomography Methods 0.000 description 3
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- 238000012986 modification Methods 0.000 description 2
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Abstract
The invention relates to a CT positioning image loading method in the field of X-ray imaging, which comprises the following steps: s1, information registration: registering information of an object to be detected, and selecting a scanning protocol group and a scanning body position; s2, inspecting the object to be inspected; clicking a button of a registration interface of the object to be detected to enter an inspection interface of the object to be detected; s3, editing scout image scanning parameters: modifying and confirming scout image scanning parameters in an inspection interface of an object to be inspected; s4, scan: starting scanning according to the scout image protocol confirmed in step S3; s5, reconstructing: starting a reconstruction process and reconstructing an image after scanning is started, and finishing reconstructing the image after scanning is finished, wherein the image at the moment is a final positioning image; s6, scout loading: and acquiring and loading the positioning image, and displaying the central line of the positioning image in real time in the loading process. The invention also provides a CT positioning image loading system. The invention enables the radiation dose to which the object to be examined is subjected to be minimized and the best image quality to be achieved.
Description
Technical Field
The invention relates to the field of X-ray imaging, in particular to a loading method and system for a CT (computed tomography) positioning image and a center line.
Background
The scout image in the spiral CT scanning can define the scanning range, angle, scanning parameters, delay time and the like, and a detailed scanning plan is made, so that the diagnosis accuracy is guaranteed.
Before performing a main scan with an X-ray Computed Tomography (CT) system, a scout image (topogram) is usually scanned, and a scan range is determined for a subsequent helical scan according to the scout image.
In the current scout scan, a laser light is usually used to determine the starting position of the scout scan, and the scan length is roughly estimated, for example, when setting the starting position of the scout scan, an operator (such as a doctor or a technician) will set a starting position in advance according to the anatomical structure of the object to be detected, then the operator will move the scanning bed by means of a laser light in the machine frame to make the projection of the light beam emitted by the laser light on the starting point or the ending point of the area to be scanned substantially coincide with the preset starting position, then the operator will select the moving direction of the scanning bed on the scanning console according to the area to be scanned, and set the scan length, so that the CT system performs the scout scan on the object to be detected in the process that the scanning bed moves the distance of the scan length from the starting position along the moving direction. In addition, the scanning length can be directly input through a keyboard, or the operator presses a cancel key on the scanning console at any time in the scanning process to terminate the scanning, so that the end position is obtained.
In an interface for offline reconstruction of medical images, when an inspection image sequence to be reconstructed is loaded, an existing process needs to adjust a Field of View (FOV) plan box from the beginning every time an image to be reconstructed is loaded. The specific process for PET-CT image reconstruction is as follows: selecting a CT (Computed Tomography) sequence, displaying a CT tomogram and a default FOV plan frame in a tomogram positioning area, and adjusting the range of the FOV plan frame on the CT tomogram to determine the reconstruction range of the cross section; and (4) continuing to select a new PET (positron emission tomography) sequence to be reconstructed, displaying a tomogram positioning area as empty, and performing de novo adjustment by using a default FOV (field of view) plan frame.
As can be seen from the above, for image sequences with substantially the same FOV, the existing PET-CT image reconstruction technology cannot determine the reconstruction range of a new medical image sequence to be reconstructed by using the FOV planning frame of the reconstructed medical image sequence, that is, cannot plan the reconstruction range of the cross-sectional position of the CT sequence by using the functional tomogram, nor plan the reconstruction range of the cross-sectional position of the PET sequence by using the tomogram.
Through the search of the prior art, the Chinese patent application publication No. CN102525524B entitled positioning device for positioning image scanning comprises an angle sensor and two laser lamps with intervals in the vertical direction and/or the horizontal direction, the projections of the light beams emitted by the two laser lamps on an object to be detected can be intersected at an appointed position, and the angle sensor is used for acquiring the included angle between the projection direction of the light beams of the two laser lamps at the appointed position and the appointed direction. In addition, the invention also provides a positioning method for scanning the positioning image. The method still cannot solve the existing problems in the image reconstruction process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for loading a CT positioning image and a center line.
The loading method of the CT positioning image provided by the invention comprises the following steps:
s1, information registration: registering information of an object to be detected, and selecting a scanning protocol group and a scanning body position;
s2, inspecting the object to be inspected; clicking a button of a registration interface of the object to be detected to enter an inspection interface of the object to be detected;
s3, editing scout image scanning parameters: modifying and confirming scout image scanning parameters in an inspection interface of an object to be inspected;
s4, scan: starting scanning according to the scout image protocol confirmed in step S3;
s5, reconstructing: starting a reconstruction process and reconstructing an image after scanning is started, and finishing reconstructing the image after scanning is finished, wherein the image at the moment is a final positioning image;
s6, scout loading: and acquiring and loading the positioning image, and displaying the central line of the positioning image in real time in the loading process.
In some embodiments, in step S1, the set of scan protocols includes a scout image protocol, a helical protocol, and a tomographic protocol.
In some embodiments, in step S3, the scout image scan parameters include scan length, range, voltage, and current.
In some embodiments, in step S6, the process of loading the scout image is: and normally loading the first reconstructed image, loading the memory of the acquired image according to the dicom3.0 standard when the later reconstructed image is loaded, and updating the memory on the basis.
In some embodiments, in step S6, the central line is taken from the X-direction coordinate of the scout image and then penetrates from the top to the end of the image.
The invention also provides a CT (computed tomography) scout image loading system, and the loading method adopting the CT scout image comprises the following steps:
an information registration module: registering information of an object to be detected, and selecting a scanning protocol group and a scanning body position;
an inspection module for an object to be inspected; clicking a button of a registration interface of the object to be detected to enter an inspection interface of the object to be detected;
the positioning image scanning parameter editing module: modifying and confirming scout image scanning parameters in an inspection interface of an object to be inspected;
a scanning module: starting scanning according to the scout image protocol confirmed in step S3;
a map reconstruction module: starting a reconstruction process and reconstructing an image after scanning is started, and finishing reconstructing the image after scanning is finished, wherein the image at the moment is a final positioning image;
the positioning image loading module: and acquiring and loading the positioning image, and displaying the central line of the positioning image in real time in the loading process.
In some embodiments, in the information registration module, the set of scanning protocols includes a scout protocol, a helical protocol, and a tomographic protocol.
In some embodiments, in the scout scan parameter confirmation module, the scout scan parameters include scan length, range, voltage, and current.
In some embodiments, in step S6, the process of loading the scout image is: the first reconstructed image is loaded normally, and the PixelData of the image is acquired according to the dicom3.0 standard when the later reconstructed image is loaded, and the PixelData is updated on the basis.
In some embodiments, the center line is taken from the X-direction coordinate of the scout image and then intersects from the top to the end of the image.
Compared with the prior art, the invention has the following beneficial effects:
the invention can minimize the radiation dose of the object to be detected and achieve the best image quality by modifying and confirming the scanning parameters of the positioning image, thereby achieving the best scanning effect.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a flow chart of the loading method of CT scout image and center line of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The invention provides a CT (computed tomography) scout image loading method, which comprises the following steps of:
s1, information registration: registering information of an object to be detected, selecting a scanning protocol group and a scanning body position, and confirming a scanning part and a position of the object to be detected on a scanning bed; the scanning protocol comprises a scout image protocol, a spiral protocol and a fault protocol, the scanning body position mainly refers to an entering mode and a placing mode when an object to be detected is scanned, and is similar to a human body examination scanning body position, such as HFS (head-advanced, supine), HFDL (head-advanced, left-side lying), HFDR (head-advanced, right-side lying), HFP (head-advanced, prone), FFDL (foot-advanced, left-side lying), FFDR (foot-advanced, right-side lying), FFP (foot-advanced, prone) and FFS (foot-advanced, supine) and the like.
S2, inspecting the object to be inspected; clicking a button of a registration interface of the object to be detected to enter an inspection interface of the object to be detected, and enabling the object to be detected to enter the inspection interface to wait for inspection;
and S3, confirming the scout image scanning parameters: and entering an inspection interface to modify and confirm the scanning parameters of the positioning image, and confirming the scanning position and range of the positioning image of the object to be detected.
S4, scan: scanning is performed according to the scout image protocol confirmed in step S3, and the parameters of the scout image scanning include scanning length, range, voltage, current, and the like.
S5, reconstructing: starting a reconstruction process and reconstructing an image after scanning is started, and finishing reconstructing the image after scanning is finished, wherein the image at the moment is a final positioning image; namely, after the scanning is started, the reconstruction process is started immediately, the reconstruction of the image is finished immediately after the scanning is finished and the image is loaded to an interface for display, the reconstructed image is a positioning sheet image, namely a positioning image, the specific scanning part in the subsequent step can be confirmed through the reconstructed positioning image, and the accurate positioning scanning position and range can be obtained.
S6, scout loading: acquiring and loading the reconstructed positioning image picture, and simultaneously displaying the central line of the positioning image picture in real time in the loading process, wherein,
the loading process of the positioning image is that the first reconstructed image is normally loaded, and the pixel data of the image is acquired according to the dicom3.0 standard when the later reconstructed image is loaded, and the pixel data is updated on the basis of the pixel data. The first reconstructed image is normally loaded, namely the image is loaded after reconstruction scanning, and the loading of the reconstructed image after the first reconstructed image is to load the pixel data of the (N + 1) th reconstructed image into the (N) th reconstructed image by acquiring the pixel data of the positioning image after the first reconstructed image, namely when the (N + 1) th reconstructed image is loaded, the pixel data of the (N + 1) th reconstructed image is loaded, so that dynamic one-by-one updating is carried out, a dynamic coherent visual effect is realized, the user experience is enhanced, and meanwhile, the technical effect of image loading processing is improved.
The central line is taken from the center point according to the X-direction coordinate of the positioning image and then penetrates from the top end to the tail end of the image. The central line is displayed for judging whether the body position of the object to be detected on the scanning bed meets the requirements, such as centering and the like.
Example 2
The invention also provides a CT scout image loading system, which adopts the CT scout image loading method described in the above embodiment 1, and includes:
an information registration module: registering information of an object to be detected, and selecting a scanning protocol group and a scanning body position;
an inspection module for an object to be inspected; clicking a button of a registration interface of the object to be detected to enter an inspection interface of the object to be detected;
the positioning image scanning parameter editing module: modifying and confirming scout image scanning parameters in an inspection interface of an object to be inspected;
a scanning module: starting scanning according to the scout image protocol confirmed in step S3;
a map reconstruction module: starting a reconstruction process and reconstructing an image after scanning is started, and finishing reconstructing the image after scanning is finished, wherein the image at the moment is a final positioning image;
the positioning image loading module: and acquiring and loading the positioning image, and displaying the central line of the positioning image in real time in the loading process.
The operation method and process of each module and the corresponding technical problem to be solved have been described in detail in embodiment 1, and are not described herein again.
Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A CT positioning image loading method is characterized by comprising the following steps:
s1, information registration: registering information of an object to be detected, and selecting a scanning protocol group and a scanning body position;
s2, inspecting the object to be inspected; clicking a button of a registration interface of the object to be detected to enter an inspection interface of the object to be detected;
s3, editing scout image scanning parameters: modifying and confirming scout image scanning parameters in an inspection interface of an object to be inspected;
s4, scan: starting scanning according to the scout image protocol confirmed in step S3;
s5, reconstructing: starting a reconstruction process and reconstructing an image after scanning is started, and finishing reconstructing the image after scanning is finished, wherein the image at the moment is a final positioning image;
s6, scout loading: and acquiring and loading the positioning image, and displaying the central line of the positioning image in real time in the loading process.
2. The loading method of CT scout image according to claim 1, wherein in the step S1, the scan protocol set includes a scout image protocol, a spiral protocol and a tomographic protocol.
3. The CT scout image loading method according to claim 1, wherein in the step S3, the scout image scanning parameters include scanning length, range, voltage and current.
4. The CT scout image loading method according to claim 1, wherein in step S6, the scout image loading process comprises: the first reconstructed image is loaded normally, and the PixelData of the image is acquired according to the dicom3.0 standard when the later reconstructed image is loaded, and the PixelData is updated on the basis.
5. The CT scout image loading method according to claim 1, wherein in step S6, the central line is taken from the X-direction coordinates of the scout image and then runs through from the top to the end of the image.
6. A CT scout image loading system, wherein the loading method of the CT scout image according to any claim 1-5 is adopted, comprising:
an information registration module: registering information of an object to be detected, and selecting a scanning protocol group and a scanning body position;
an inspection module for an object to be inspected; clicking a button of a registration interface of the object to be detected to enter an inspection interface of the object to be detected;
the positioning image scanning parameter editing module: modifying and confirming scout image scanning parameters in an inspection interface of an object to be inspected;
a scanning module: starting scanning according to the scout image protocol confirmed in step S3;
a map reconstruction module: starting a reconstruction process and reconstructing an image after scanning is started, and finishing reconstructing the image after scanning is finished, wherein the image at the moment is a final positioning image;
the positioning image loading module: and acquiring and loading the positioning image, and displaying the central line of the positioning image in real time in the loading process.
7. The CT scout image loading system of claim 6, wherein in the information registration module, the set of scanning protocols includes a scout image protocol, a helical protocol, and a tomographic protocol.
8. The CT scout image loading system of claim 6, wherein the scout image scan parameters validation module includes scan length, range, voltage, and current.
9. The CT scout image loading system of claim 6, wherein the scout image loading process is: and normally loading the first reconstructed image, loading the memory of the acquired image according to the dicom3.0 standard when the later reconstructed image is loaded, and updating the memory on the basis.
10. The CT scout image loading system of claim 6, wherein the centerline is centered according to X-direction coordinates of the scout image and then intersects from the apex to the tip of the image.
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| CN201911121402.6A CN110960248A (en) | 2019-11-15 | 2019-11-15 | Loading method and system of CT positioning image |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876348A (en) * | 2021-11-17 | 2022-01-04 | 武汉联影生命科学仪器有限公司 | Scanning image generation method, system, device and processing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113876348A (en) * | 2021-11-17 | 2022-01-04 | 武汉联影生命科学仪器有限公司 | Scanning image generation method, system, device and processing equipment |
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Application publication date: 20200407 |