CN112767395B - Image performance detection method and device - Google Patents
Image performance detection method and device Download PDFInfo
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- CN112767395B CN112767395B CN202110369694.6A CN202110369694A CN112767395B CN 112767395 B CN112767395 B CN 112767395B CN 202110369694 A CN202110369694 A CN 202110369694A CN 112767395 B CN112767395 B CN 112767395B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10081—Computed x-ray tomography [CT]
Abstract
The embodiment of the invention provides an image performance detection method and device. The embodiment of the invention obtains the scanning data and the image establishing scheme corresponding to the scanning data, selects the sub-scanning data corresponding to each image number indicated by the image establishing scheme from the scanning data according to the image establishing scheme, respectively carries out image reconstruction based on the sub-scanning data corresponding to each image number indicated by the image establishing scheme to obtain the reconstructed images corresponding to each image number, the number of the obtained reconstructed images is the total number of the image numbers indicated by the image establishing scheme, the number is smaller than the total number of all the image numbers corresponding to the scanning data, determines the measured value of the image performance index according to the reconstructed images corresponding to each image number indicated by the image establishing scheme, obtains the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index, and does not need to reconstruct the images irrelevant to the detection in the image performance detection process, the detection time is saved, and the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of medical image processing, in particular to an image performance detection method and device.
Background
CT (Computed Tomography) imaging is one of the major imaging modalities in modern medical imaging. The basic operating principle of CT imaging is that a subject is scanned by a highly sensitive detector according to the difference in absorption and transmittance of X-rays by different tissues of the subject, and raw data (i.e., scan data) obtained by the scanning is input to a camera such as an electronic computer, and the camera processes the raw data to obtain a CT image of the subject.
"line" refers to the number of arrays of detectors of a CT scanning device, and generally, the larger the number of lines, the wider the width of the detector, and the larger the width of one scan. In the related art, the multi-row CT is called MSCT (multi slice CT), and generally, the meaning of the two is the same, that is, how many "rows" of detectors are used, and how many "slices" of images can be acquired by one scan. The larger the number of rows, the shorter the examination time, and the more advantageous the examination of the moving part, such as the heart.
However, the image is not clearer as the number of rows is larger, and if the image effect of the obtained CT image is not good, the diagnosis of the doctor is affected. Therefore, it is necessary to know the performance of the image through image performance detection.
In some application scenarios, for example, when a sudden infectious virus epidemic occurs, CT is required to detect the subject to determine whether the subject is infected with the virus. At this time, in order to ensure the accuracy and reliability of the detection result, the requirement on the image quality is high. Under the scene, the image performance test needs to be performed quickly, so that the working state of the CT capable of obtaining the image meeting the quality requirement can be found as soon as possible according to the result of the image performance test, and the CT scanning can be put into the application of resisting the epidemic situation as soon as possible.
Disclosure of Invention
In order to overcome the problems in the related art, the invention provides an image performance detection method and device, and the image performance detection efficiency is improved.
According to a first aspect of the embodiments of the present invention, there is provided an image performance detection method, including:
acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing Computed Tomography (CT) scanning on a set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index;
selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme;
respectively carrying out image reconstruction on the sub-scanning data corresponding to each image number indicated by the image reconstruction scheme to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
determining the measurement value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme;
and obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
According to a second aspect of embodiments of the present invention, there is provided an image performance detection apparatus including:
the data acquisition module is used for acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing Computed Tomography (CT) scanning on a set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index;
the data selection module is used for selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme;
the image reconstruction module is used for respectively reconstructing images based on the sub-scanning data corresponding to each image number indicated by the image construction scheme to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
the measured value determining module is used for determining the measured value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme;
and the result obtaining module is used for obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, by acquiring scanning data and an imaging scheme corresponding to the scanning data, selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme, respectively performing image reconstruction based on the sub-scanning data corresponding to each image number indicated by the imaging scheme to obtain a reconstructed image corresponding to each image number, wherein the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, the number is smaller than the total number of all the image numbers corresponding to the scanning data, determining the measurement value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme, obtaining the detection result of the image performance index according to the measurement value of the image performance index and the set standard value of the image performance index, and during the image performance detection, only the image relevant to detection is reconstructed, and the image irrelevant to detection is not required to be reconstructed, so that the detection time is saved, and the detection efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a diagram illustrating a structure of a phantom for detecting image performance according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an imaging scanning position and an initial swing model position according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating an image performance detection method according to an embodiment of the present invention.
FIG. 4 is a block diagram of an image performance detecting apparatus according to an embodiment of the present invention.
Fig. 5 is a hardware structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of embodiments of the invention, as detailed in the following claims.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used to describe various information in embodiments of the present invention, the information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Fig. 1 is a diagram illustrating a structure of a phantom for detecting image performance according to an embodiment of the present invention. In fig. 1, 1 is a head die, 2 is a die body, 3 is a metal nail, 4 is a physical layer, 5 is a water layer, 6 is a water layer center line, and 7 is a physical layer center line.
In the performance detection process of the image, the phantom needs to be scanned to obtain scanning data, then the image is obtained according to the reconstruction of the scanning data, and the measured value of the image performance index is obtained according to the image. The motif has a standard value of the corresponding image performance index, and the performance detection result of the image can be obtained by comparing the measured value and the standard value of the image performance index.
It should be noted that the image performance index to be detected can be selected according to application requirements. The image performance indicators may include FWHM (Full Width at Half Maximum), Mean CT value (Mean CT), MTF (Modulation Transfer Function) value, Uniformity (Uniformity), Noise (Noise).
Wherein each image performance index has a corresponding scan protocol. When detecting a certain image performance index, the die body needs to be scanned by using a scanning protocol corresponding to the image performance index to obtain scanning data.
When the phantom is scanned, the phantom needs to be moved to a corresponding image-establishing scanning position. Fig. 2 is a schematic diagram of an imaging scanning position and an initial swing model position according to an embodiment of the present invention. As shown in fig. 2, during scanning, the phantom needs to be moved from the initial phantom position to the position during scanning (i.e., the imaging scanning position). Wherein the movement of the phantom may be accomplished by moving a scanning bed carrying the phantom. The imaging scan position can be calculated by the following formula (1).
Image-building scanning position = initial bed code + scanning position (moving bed code) + image number image-building interval (1)
Wherein, the starting bed code is the bed code of the scanning bed when the mold body is positioned at the starting mold swinging position.
In the related art, all scan data is reconstructed. However, in the image performance detection, not all of the reconstructed images but only a part thereof is required. Therefore, the related art wastes time and imaging resources.
This defect is very serious in some scenarios and can cause catastrophic losses. In recent years, public health emergencies around the world, such as sudden epidemic of infectious viruses, have occurred. In such a scenario, a large number of patients are often generated in a short time. CT detection is an important auxiliary diagnostic means, and the effect is huge in the moment. However, in such emergency situations, the number of patients is increasing, so that the CT device is relatively short or even seriously short, and the time and resources are more valuable.
In the case of detecting whether or not a virus is infected by CT during a virus epidemic, the image quality requirement for each image is relatively high. The image performance detection method provided by the embodiment of the invention can be used for rapidly detecting the image performance of the CT, and saving the performance detection time while ensuring the image quality of the CT in the normal use process so as to be put into use more rapidly. In order to solve the above problem, an embodiment of the present invention provides an image performance detection method.
The image property detection method of the present invention will be described in detail below with reference to examples.
Fig. 3 is a flowchart illustrating an image performance detection method according to an embodiment of the present invention. As shown in fig. 3, in this embodiment, the image performance detection method may include:
s301, acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing Computed Tomography (CT) scanning on a set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index, and may include at least one of the following: the number of scanning circles and the image number of the image to be reconstructed; the imaging scheme may be in the form of scan turns + image number.
S302, selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme.
And S303, respectively carrying out image reconstruction on the basis of the sub-scanning data corresponding to each image number indicated by the image construction scheme to obtain reconstructed images corresponding to each image number, wherein the number of the obtained reconstructed images is the total number of the image numbers indicated by the image construction scheme, and the number is smaller than the total number of all the image numbers corresponding to the scanning data.
S304, determining the measurement value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme.
S305, obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
In this embodiment, the image performance detection method may be executed by an image performance detection apparatus disposed in a console device of the CT system.
The CT system comprises a CT scanning device and a console device. The CT scanning equipment is responsible for scanning the die body according to a scanning protocol to obtain scanning data and transmitting the scanning data to the console equipment.
In this embodiment, the CT scanning device may transmit the scanning data to the console device, and simultaneously transmit the scanning protocol or the imaging scheme corresponding to the scanning data to the console device.
Wherein the imaging scheme can be extracted from the scanning protocol.
Part of the content of the scanning protocol is shown in table 1.
Here, the meaning of the scan protocol in table 1 is described by taking "Performance _ Axial _ Head _ FWHM _68_ body" as an example. "Performance _ Axial _ Head _ FWHM _68_ body wedge" indicates that the detection purpose of the scanning protocol is to detect Performance (Performance), the scanning is Axial (Axial), the part is the Head (Head), the name of the Performance is full width at half maximum (FWHM), the scanning mode is 68 layers, and the scanning object is a phantom (body wedge).
In table 1, the image number indicates the number of images that need to be used for detecting the image performance index. The picture numbers in table 1 are picture numbers of a part of all pictures corresponding to the number of scanning turns, not picture numbers of all pictures corresponding to the number of scanning turns. According to the image numbers in the scanning protocol, it can be known which images need to be used in all the images corresponding to each circle of scanning data in the detection of the image performance index, that is, which images corresponding to the image numbers are related to the detection of the image performance index, and this information is referred to herein as an imaging scheme, and the imaging scheme is used for indicating the image numbers related to the detection of the image performance index. The image number indicated by the image creating scheme is the image number to be reconstructed.
The scanning protocol may include information such as slice thickness and scanning position, in addition to the contents shown in table 1.
According to the scanning protocol shown in table 1, the imaging scheme corresponding to the scanning protocol can be extracted. The scanning protocol may include the imaging scheme in the form of an add-on field, such as a field identifier for setting the imaging scheme, scheme contents, a check identifier; the mapping relationship between the imaging scheme and the scanning protocol may also be preset, for example, the corresponding relationship between the imaging scheme and the scanning protocol may be as shown in table 2.
In an exemplary implementation, acquiring scan data and an imaging protocol corresponding to the scan data may include:
receiving scanning data transmitted by CT scanning equipment and an image establishing scheme corresponding to the scanning data.
In this embodiment, the CT scanning device extracts an imaging scheme from the scanning protocol, and transmits the scanning data and the imaging scheme corresponding to the scanning data to the console device.
In an exemplary implementation, acquiring scan data and an imaging protocol corresponding to the scan data may include:
receiving scanning data transmitted by CT scanning equipment and a scanning protocol corresponding to the scanning data;
and analyzing the scanning protocol, and extracting an image establishing scheme corresponding to the scanning data.
In this embodiment, the CT scanning device transmits the scanning data and the scanning protocol corresponding to the scanning data to the console device, and the console device extracts the imaging scheme from the scanning protocol.
In step S302, the selected sub-scan data is scan data corresponding to the image number indicated by the imaging scheme, and is not scan data corresponding to any image number in all scan data. The sum of the sub-scan data corresponding to all the image numbers indicated by the imaging recipe is a part of the entire scan data, not the entire scan data.
Wherein the scan data may be divided by a data stream. The data stream and the image number have a preset corresponding relationship. Therefore, the data stream corresponding to the image number can be determined according to the image number and the corresponding relation between the data stream and the image number, and the scanning data corresponding to the image number is extracted.
In one example, the imaging scheme includes a scanned circle number and an image number corresponding to the circle number (as shown in table 2);
at this time, according to the imaging scheme, selecting sub-scan data corresponding to each image number indicated by the imaging scheme from the scan data may include:
according to the circle sequence number in the image construction scheme, positioning a first position where the scanning data corresponding to the circle sequence number is located in the scanning data;
according to the image number corresponding to the circle number, positioning a second position where the scanning data corresponding to the image number is located in the first position;
reading scan data from the second location.
The scanning data can be divided according to the number of the scanned circles, and the data stream corresponding to the image number can be further determined according to the corresponding relation between the data stream and the image number in the scanning data of each circle, so that the scanning data corresponding to the image number can be extracted.
In step S303, the sub-scan data used for reconstruction is the sub-scan data corresponding to the image number indicated by the image reconstruction scheme, and is not the sub-scan data corresponding to all the image numbers corresponding to all the scan data. After the reconstruction in step S303, the number of reconstructed images obtained is equal to the number of all image numbers indicated by the imaging scheme, and the number is less than the total number of all image numbers corresponding to all scan data. It can be seen that step S303 reconstructs only a portion of the entire scan data, rather than performing reconstruction on all of the scan data. Thus, the number of reconstructed images is reduced, time is saved, and efficiency is improved.
In this embodiment, the image performance indicator may comprise one of a full width at half maximum FWHM, an average CT value, a modulation transfer function MTF value, uniformity, and noise.
Any one of the related technologies may be adopted as a manner of determining the measurement value of the image performance index according to the reconstructed image, which is not limited in this embodiment.
For a way of obtaining a detection result of the image performance index according to the measurement value of the image performance index and the standard value of the image performance index, please refer to the schemes in the related art, which is not described herein again.
The embodiment of the invention is based on the image construction scheme, only a part of images in all images corresponding to the scanning data are reconstructed in the image reconstruction in the image performance detection process, but not all images corresponding to the scanning data, so that the data usage amount is reduced, the time consumption is shortened, and the effect of rapidly completing the image performance test is obtained.
It should be noted that the console device in the above embodiments may be replaced by a device such as a camera or a dedicated electronic computer, and the present embodiment is not limited thereto.
The image performance detection method provided by the embodiment of the invention obtains scanning data and an image establishing scheme corresponding to the scanning data, selects sub-scanning data corresponding to each image number indicated by the image establishing scheme from the scanning data according to the image establishing scheme, respectively carries out image reconstruction based on the sub-scanning data corresponding to each image number indicated by the image establishing scheme to obtain reconstructed images corresponding to each image number, the number of the obtained reconstructed images is the total number of the image numbers indicated by the image establishing scheme, the number is smaller than the total number of all the image numbers corresponding to the scanning data, determines the measurement value of the image performance index according to the reconstructed images corresponding to each image number indicated by the image establishing scheme, and obtains the detection result of the image performance index according to the measurement value of the image performance index and the set standard value of the image performance index, in the image performance detection process, only the image relevant to detection is reconstructed, and the image irrelevant to detection is not required to be reconstructed, so that the detection time is saved, and the detection efficiency is improved.
Based on the above method embodiment, the embodiment of the present invention further provides corresponding apparatus, device, and storage medium embodiments.
FIG. 4 is a block diagram of an image performance detecting apparatus according to an embodiment of the present invention. As shown in fig. 4, in the present embodiment, the image performance detection apparatus may include:
a data obtaining module 410, configured to obtain scan data and an imaging scheme corresponding to the scan data; the scanning data is obtained by performing Computed Tomography (CT) scanning on a set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index;
a data selecting module 420, configured to select, according to the imaging scheme, sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data;
the image reconstruction module 430 is configured to perform image reconstruction on the sub-scan data corresponding to each image number indicated by the image reconstruction scheme, respectively, to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
a measurement value determining module 440, configured to determine a measurement value of the image performance index according to a reconstructed image corresponding to each image number indicated by the imaging scheme;
the result obtaining module 450 is configured to obtain a detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
In one example, the data acquisition module 410 may be specifically configured to:
receiving scanning data transmitted by CT scanning equipment and an image establishing scheme corresponding to the scanning data.
In one example, the data acquisition module 410 may be specifically configured to:
receiving scanning data transmitted by CT scanning equipment and a scanning protocol corresponding to the scanning data;
and analyzing the scanning protocol, and extracting an image establishing scheme corresponding to the scanning data.
In one example, the imaging scheme comprises a scanned circle number and an image number corresponding to the circle number;
the data selecting module 420 may be specifically configured to:
according to the circle sequence number in the image construction scheme, positioning a first position where the scanning data corresponding to the circle sequence number is located in the scanning data;
according to the image number corresponding to the circle number, positioning a second position where the scanning data corresponding to the image number is located in the first position;
reading scan data from the second location.
In one example, the image performance indicators include one of full width at half maximum FWHM, average CT value, modulation transfer function MTF value, uniformity, noise.
The embodiment of the invention also provides the electronic equipment. Fig. 5 is a hardware structure diagram of an electronic device according to an embodiment of the present invention. As shown in fig. 5, the electronic apparatus includes: an internal bus 501, and a memory 502, a processor 503, and an external interface 504, which are connected through the internal bus, wherein,
the memory 502 is used for storing machine readable instructions corresponding to the image performance detection logic;
the processor 503 is configured to read the machine-readable instructions stored in the memory 502 and execute the instructions to implement the following operations:
acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing Computed Tomography (CT) scanning on a set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index;
selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme;
respectively carrying out image reconstruction on the sub-scanning data corresponding to each image number indicated by the image reconstruction scheme to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
determining the measurement value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme;
and obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
In one example, acquiring scan data and an imaging protocol corresponding to the scan data includes:
receiving scanning data transmitted by CT scanning equipment and an image establishing scheme corresponding to the scanning data.
In one example, acquiring scan data and an imaging protocol corresponding to the scan data includes:
receiving scanning data transmitted by CT scanning equipment and a scanning protocol corresponding to the scanning data;
and analyzing the scanning protocol, and extracting an image establishing scheme corresponding to the scanning data.
In one example, the imaging scheme comprises a scanned circle number and an image number corresponding to the circle number;
according to the image establishing scheme, selecting sub-scanning data corresponding to each image number indicated by the image establishing scheme from the scanning data, wherein the sub-scanning data comprises:
according to the circle sequence number in the image construction scheme, positioning a first position where the scanning data corresponding to the circle sequence number is located in the scanning data;
according to the image number corresponding to the circle number, positioning a second position where the scanning data corresponding to the image number is located in the first position;
reading scan data from the second location.
In one example, the image performance indicators include one of full width at half maximum FWHM, average CT value, modulation transfer function MTF value, uniformity, noise.
An embodiment of the present invention further provides a CT system, including:
the CT equipment is used for setting a die body according to a scanning protocol corresponding to the image performance index to perform CT scanning so as to obtain scanning data;
an electronic device to:
acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing Computed Tomography (CT) scanning on a set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index;
selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme;
respectively carrying out image reconstruction on the sub-scanning data corresponding to each image number indicated by the image reconstruction scheme to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
determining the measurement value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme;
and obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
In one example, acquiring scan data and an imaging protocol corresponding to the scan data includes:
receiving scanning data transmitted by CT scanning equipment and an image establishing scheme corresponding to the scanning data.
In one example, acquiring scan data and an imaging protocol corresponding to the scan data includes:
receiving scanning data transmitted by CT scanning equipment and a scanning protocol corresponding to the scanning data;
and analyzing the scanning protocol, and extracting an image establishing scheme corresponding to the scanning data.
In one example, the imaging scheme comprises a scanned circle number and an image number corresponding to the circle number;
according to the image establishing scheme, selecting sub-scanning data corresponding to each image number indicated by the image establishing scheme from the scanning data, wherein the sub-scanning data comprises:
according to the circle sequence number in the image construction scheme, positioning a first position where the scanning data corresponding to the circle sequence number is located in the scanning data;
according to the image number corresponding to the circle number, positioning a second position where the scanning data corresponding to the image number is located in the first position;
reading scan data from the second location.
In one example, the image performance indicators include one of full width at half maximum FWHM, average CT value, modulation transfer function MTF value, uniformity, noise.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the following operations:
acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing Computed Tomography (CT) scanning on a set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index;
selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme;
respectively carrying out image reconstruction on the sub-scanning data corresponding to each image number indicated by the image reconstruction scheme to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
determining the measurement value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme;
and obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
In one example, acquiring scan data and an imaging protocol corresponding to the scan data includes:
receiving scanning data transmitted by CT scanning equipment and an image establishing scheme corresponding to the scanning data.
In one example, acquiring scan data and an imaging protocol corresponding to the scan data includes:
receiving scanning data transmitted by CT scanning equipment and a scanning protocol corresponding to the scanning data;
and analyzing the scanning protocol, and extracting an image establishing scheme corresponding to the scanning data.
In one example, the imaging scheme comprises a scanned circle number and an image number corresponding to the circle number;
according to the image establishing scheme, selecting sub-scanning data corresponding to each image number indicated by the image establishing scheme from the scanning data, wherein the sub-scanning data comprises:
according to the circle sequence number in the image construction scheme, positioning a first position where the scanning data corresponding to the circle sequence number is located in the scanning data;
according to the image number corresponding to the circle number, positioning a second position where the scanning data corresponding to the image number is located in the first position;
reading scan data from the second location.
In one example, the image performance indicators include one of full width at half maximum FWHM, average CT value, modulation transfer function MTF value, uniformity, noise.
For the device and apparatus embodiments, as they correspond substantially to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, wherein the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution in the specification. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. An image performance detection method, comprising:
acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing computed tomography scanning on the set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index; the imaging scheme is included in the scan protocol in the form of an add-on field;
selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme;
respectively carrying out image reconstruction on the sub-scanning data corresponding to each image number indicated by the image reconstruction scheme to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
determining the measurement value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme;
and obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
2. The method of claim 1, wherein acquiring scan data and an imaging protocol corresponding to the scan data comprises:
receiving scanning data transmitted by CT scanning equipment and an image establishing scheme corresponding to the scanning data.
3. The method of claim 1, wherein acquiring scan data and an imaging protocol corresponding to the scan data comprises:
receiving scanning data transmitted by CT scanning equipment and a scanning protocol corresponding to the scanning data;
and analyzing the scanning protocol, and extracting an image establishing scheme corresponding to the scanning data.
4. The method according to claim 1, wherein the imaging scheme comprises a scanned circle number and an image number corresponding to the circle number;
according to the image establishing scheme, selecting sub-scanning data corresponding to each image number indicated by the image establishing scheme from the scanning data, wherein the sub-scanning data comprises:
according to the circle sequence number in the image construction scheme, positioning a first position where the scanning data corresponding to the circle sequence number is located in the scanning data;
according to the image number corresponding to the circle number, positioning a second position where the scanning data corresponding to the image number is located in the first position;
reading scan data from the second location.
5. The method of claim 1, wherein the image performance metric comprises one of full width at half maximum FWHM, average CT value, modulation transfer function MTF value, uniformity, noise.
6. An image performance detection apparatus, comprising:
the data acquisition module is used for acquiring scanning data and an image establishing scheme corresponding to the scanning data; the scanning data is obtained by performing computed tomography scanning on the set die body by adopting a scanning protocol corresponding to the image performance index; the imaging scheme is used for indicating an image number related to the detection of the image performance index; the imaging scheme is included in the scan protocol in the form of an add-on field;
the data selection module is used for selecting sub-scanning data corresponding to each image number indicated by the imaging scheme from the scanning data according to the imaging scheme;
the image reconstruction module is used for respectively reconstructing images based on the sub-scanning data corresponding to each image number indicated by the image construction scheme to obtain a reconstructed image corresponding to each image number; the number of the obtained reconstructed images is the total number of the image numbers indicated by the imaging scheme, and the number is less than the total number of all the image numbers corresponding to the scanning data;
the measured value determining module is used for determining the measured value of the image performance index according to the reconstructed image corresponding to each image number indicated by the imaging scheme;
and the result obtaining module is used for obtaining the detection result of the image performance index according to the measured value of the image performance index and the set standard value of the image performance index.
7. The apparatus of claim 6, wherein the data acquisition module is specifically configured to:
receiving scanning data transmitted by CT scanning equipment and an image establishing scheme corresponding to the scanning data.
8. The apparatus of claim 6, wherein the data acquisition module is specifically configured to:
receiving scanning data transmitted by CT scanning equipment and a scanning protocol corresponding to the scanning data;
and analyzing the scanning protocol, and extracting an image establishing scheme corresponding to the scanning data.
9. The apparatus according to claim 6, wherein the imaging scheme comprises a scanned circle number and an image number corresponding to the circle number;
the data selection module is specifically configured to:
according to the circle sequence number in the image construction scheme, positioning a first position where the scanning data corresponding to the circle sequence number is located in the scanning data;
according to the image number corresponding to the circle number, positioning a second position where the scanning data corresponding to the image number is located in the first position;
reading scan data from the second location.
10. The apparatus of claim 6, wherein the image performance metric comprises one of full width at half maximum (FWHM), mean CT value, Modulation Transfer Function (MTF) value, uniformity, noise.
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