CN117814828A - Detector crosstalk determination method, device and equipment - Google Patents
Detector crosstalk determination method, device and equipment Download PDFInfo
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Abstract
The embodiment of the disclosure provides a method, a device and equipment for determining crosstalk of a detector, which comprise the following steps: responding to the target operation triggered by the received target object, and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to move along the target moving direction; in the process that the test module moves along the target moving direction, when the center line of the opening structure is overlapped with the center of the detector module, acquiring sampling data acquired by each detector module in the detector; according to sampling data acquired by each detector module in the detector and position information corresponding to each detector module in the detector, determining crosstalk data corresponding to different channels and different layers in the detector, wherein the position information comprises the channels and the rows; and determining target crosstalk data corresponding to each detector module according to the crosstalk data corresponding to different channels and different layers in the detector, and improving the accuracy of the determined target crosstalk data corresponding to each detector module.
Description
Technical Field
The present invention relates to the field of CT scanning technology and related technology, and in particular, to a method, apparatus, and device for determining crosstalk of a detector.
Background
The CT scanning system is widely applied in industry and medical industry, the CT scanning system comprises a light source and a detector, the detector comprises a detector module and a photoelectric conversion module, the detector module is arranged in an array, the detector module receives X rays and converts the X rays into visible light to be sent to the photoelectric conversion unit, the photoelectric conversion unit converts the visible light into digital signals, and a scanning image is formed based on the digital signals.
In the prior art, crosstalk exists between the detector modules in the detector, so that the spatial resolution of an image is reduced, the phenomenon of blurring or unclear edges in the image is caused, and the spatial resolution of the image is reduced.
Disclosure of Invention
Embodiments described herein provide a method, apparatus, and device for determining crosstalk of a detector, which solve the problems existing in the prior art.
In a first aspect, according to the present disclosure, there is provided a detector crosstalk determining method, including:
responding to target operation triggered by a received target object, and outputting a control signal to a CT scanning system so that the CT scanning system controls a test module to move along a target moving direction, wherein the detector comprises detector modules which are arranged in an array, the test module comprises an opening structure, and the width of the opening structure is smaller than the width of the detector modules in a direction perpendicular to the target moving direction;
When the center line of the opening structure is overlapped with the center of the detector module in the moving process of the test module along the target moving direction, acquiring sampling data acquired by each detector module in the detector;
according to sampling data acquired by each detector module in the detector and position information corresponding to each detector module in the detector, determining crosstalk data corresponding to different channels and different layers in the detector, wherein the position information comprises the channels and the rows;
and determining target crosstalk data corresponding to each detector module according to the crosstalk data corresponding to different channels and different layers in the detector.
In some embodiments of the present disclosure, in response to receiving a target operation triggered by a target object, outputting a control signal to a CT scanning system, so that before the CT scanning system controls the test module to move along a target moving direction, the method further includes:
acquiring the length of the test module;
determining a test interval of the test module according to the length of the test module;
the responding to the target operation triggered by the received target object outputs a control signal to the CT scanning system so that the CT scanning system controls the test module to move along the target moving direction, and the responding comprises the following steps:
And responding to the target operation triggered by the received target object, and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to sequentially move along the target moving direction in each test interval.
In some embodiments of the present disclosure, the determining crosstalk data corresponding to different channels and different layers in the detector according to sampling data collected by each detector module in the detector and position information corresponding to each detector module in the detector includes:
sequentially acquiring first sampling data acquired by the detector modules corresponding to different layers of the same channel and second sampling data acquired by the detector modules corresponding to different layers of the same channel;
according to first sampling data acquired by detector modules corresponding to different layers of the same channel, determining first crosstalk data of different channels in the detector;
and determining second crosstalk data of different layers in the detector according to the second sampling data acquired by the detector modules corresponding to different channels of the same layer.
In some embodiments of the present disclosure, the determining, according to the first sampling data collected by the detector module corresponding to different layers of the same channel, first crosstalk data of different channels in the detector includes:
Acquiring first target sampling data with the maximum first sampling data from first sampling data corresponding to different layers of a target channel, and determining the target layer number corresponding to the first target sampling data;
acquiring first sampling data corresponding to a first target layer number in a target channel and first sampling data corresponding to a second target layer number in the target channel, wherein the first target layer number is the previous layer number of the target layer number, and the second target layer number is the later layer number of the target layer number;
and determining first crosstalk data of the target channel in the detector according to the first target sampling data, the first sampling data corresponding to the first target layer number in the target channel and the first sampling data corresponding to the second target layer number in the target channel.
In some embodiments of the present disclosure, the determining the first crosstalk data of the target channel in the detector according to the first target sampling data, the first sampling data corresponding to the first target layer number in the target channel, and the first sampling data corresponding to the second target layer number in the target channel includes:
determining first ratio information according to the first target sampling data and first sampling data corresponding to a second target layer number in the target channel;
Determining second ratio information according to first sampling data corresponding to a first target layer number in the target channel and first sampling data corresponding to a second target layer number in the target channel;
and determining first crosstalk data of a target channel in the detector according to the first ratio information and the second ratio information.
In some embodiments of the present disclosure, the determining, according to the second sampling data collected by the detector modules corresponding to different channels with the same layer number, second crosstalk data with different layer numbers in the detector includes:
acquiring second target sampling data with the maximum second sampling data from second sampling data corresponding to channels with different target layer numbers, and determining a target channel corresponding to the second target sampling data;
acquiring second sampling data corresponding to a first target channel in a target layer number and second sampling data corresponding to a second target channel in the target layer number, wherein the first target channel is a previous channel of the target channel, and the second target channel is a subsequent channel of the target channel;
and determining second crosstalk data of the target layer number in the detector according to the second target sampling data, the second sampling data corresponding to the first target channel in the target layer number and the second sampling data corresponding to the second target channel in the target layer number.
In some embodiments of the present disclosure, the determining the second crosstalk data of the target layer number in the detector according to the second target sampling data, the second sampling data corresponding to the first target channel in the target layer number, and the second sampling data corresponding to the second target channel in the target layer number includes:
determining third ratio information according to the first target sampling data and first sampling data corresponding to a second target layer number in the target channel;
determining fourth ratio information according to first sampling data corresponding to the first target layer number in the target channel and first sampling data corresponding to the second target layer number in the target channel;
and determining second crosstalk data of a target channel in the detector according to the third ratio information and the fourth ratio information.
In some embodiments of the present disclosure, the determining, according to crosstalk data corresponding to different channels and different layers in the detector, target crosstalk data corresponding to each detector module includes:
according to the target position information corresponding to the target detector module, acquiring first target crosstalk data corresponding to the target channel and second target crosstalk data corresponding to the target layer number;
And determining target crosstalk data corresponding to the target detector module according to the first target crosstalk data and the second target crosstalk data.
In a second aspect, according to the present disclosure, there is provided a detector crosstalk determining apparatus, comprising:
the control module is used for responding to the target operation triggered by the received target object and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to move along the target moving direction, wherein the detector comprises detector modules which are arranged in an array, the test module comprises an opening structure, and the width of the opening structure is smaller than the width of the detector module in the direction perpendicular to the target moving direction;
the sampling data acquisition module is used for acquiring sampling data acquired by each detector module in the detector when the center line of the opening structure is overlapped with the center of the detector module in the process that the test module moves along the target moving direction;
the crosstalk data determining module is used for determining crosstalk data corresponding to different channels and different layers in the detector according to sampling data acquired by each detector module in the detector and position information corresponding to each detector module in the detector, wherein the position information comprises the channels and the rows;
And the target crosstalk data determining module is used for determining target crosstalk data corresponding to each detector module according to the crosstalk data corresponding to different channels and different layers in the detector.
In a third aspect, according to the present disclosure, there is provided a computer device comprising:
one or more processors;
storage means for storing one or more programs,
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of any of the first aspects.
The detector crosstalk determining method, device and equipment provided by the embodiment of the disclosure firstly respond to the target operation triggered by the received target object and output a control signal to a CT scanning system so that the CT scanning system controls a test module to move along the target moving direction; then, in the process that the test module moves along the target moving direction, when the center line of the opening structure is overlapped with the center of the detector module, sampling data collected by each detector module in the detector are obtained; according to the sampling data collected by each detector module in the detector and the position information corresponding to each detector module in the detector, determining crosstalk data corresponding to different channels and different layers in the detector; and finally, according to the crosstalk data corresponding to different channels and different layers in the detector, determining target crosstalk data corresponding to each detector module, namely firstly, moving the test module to acquire sampling data acquired by each detector module, wherein the test module comprises an opening structure, and the acquired sampling data are sampling data acquired by the detector module when the central line of the opening structure is overlapped with the center of the detector module, so that the sampling data acquired by each detector module are more accurate.
The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following detailed description of the present application will be presented in order to make the foregoing and other objects, features and advantages of the embodiments of the present application more understandable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following brief description of the drawings of the embodiments will be given, it being understood that the drawings described below relate only to some embodiments of the present disclosure, not to limitations of the present disclosure, in which:
fig. 1 is a schematic flow chart of a method for determining crosstalk of a detector according to an embodiment of the present disclosure;
FIGS. 2A-2B are schematic structural diagrams of a test module according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of another method for determining crosstalk between detectors according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a detector crosstalk determining apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure.
In the drawings, the last two digits are identical to the elements. It is noted that the elements in the drawings are schematic and are not drawn to scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by those skilled in the art based on the described embodiments of the present disclosure without the need for creative efforts, are also within the scope of the protection of the present disclosure.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the presently disclosed subject matter belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. As used herein, a statement that two or more parts are "connected" or "coupled" together shall mean that the parts are joined together either directly or joined through one or more intermediate parts.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: there are three cases, a, B, a and B simultaneously. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Furthermore, in all embodiments of the present disclosure, terms such as "first" and "second" are used merely to distinguish one component (or portion of a component) from another component (or another portion of a component).
In the description of the present application, unless otherwise indicated, the meaning of "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two).
In order to better understand the technical solutions of the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings.
Based on the problems existing in the prior art, an embodiment of the present disclosure provides a method for determining crosstalk between detectors, and fig. 1 is a schematic flow chart of the method for determining crosstalk between detectors provided in the embodiment of the present disclosure, as shown in fig. 1, where the method for determining crosstalk between detectors includes:
s110, responding to the target operation triggered by the received target object, and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to move along the target moving direction.
Referring to fig. 2A and 2B, the probe 01 includes an array arrangement of probe modules 02, and the test module includes an opening structure having a width smaller than that of the probe modules in a direction perpendicular to the moving direction of the target.
In a specific embodiment, referring to fig. 2A and fig. 2B, the test module is a scanning die body made of metal tungsten, the test module 03 includes an opening structure, fig. 2A and fig. 2B are schematic structural diagrams of the test module respectively, as shown in fig. 2A, the test module is in a shape of a Chinese character 'hui', and another structure is shown in fig. 2B, the test module is in a shape of a Chinese character 'kou'.
In a specific embodiment, the test module is arranged on one side of the CT scanning system close to the detector, so that more crosstalk rays are included in X-rays received by the detector, and the accuracy of the determined crosstalk data is improved.
In a specific embodiment, the detector comprises a detector module and a photoelectric conversion module which are arranged in an array, the photoelectric conversion module is located on one side, far away from the light source, of the detector module, the detector module receives X rays emitted by the light source, converts the X rays into visible light and then sends the visible light to the photoelectric conversion module, and digital signals are output after the visible light is converted through the photoelectric conversion module.
In a specific embodiment, when crosstalk data between adjacent detector modules needs to be determined, a target object triggers a target operation at a terminal device, where the target operation is exemplified by determining the crosstalk operation of the detector, the terminal device responds to the trigger operation of the target object and outputs a control signal to a CT scanning system, and at this time, the CT scanning system responds to the control signal output by the terminal device and controls the test module to move along the target direction based on the control signal.
In a specific embodiment, the number of channels of the detector is greater, the number of rows is less, and an exemplary detector is a 200×64 matrix, where the number of channels of the detector is 200, and the number of rows of the detector is 64, that is, the detector includes 200×64 detector modules. Thus, in a preferred embodiment, the test module is controlled to move in the row direction of the detector modules.
In addition, in the embodiment of the disclosure, by setting the test module to include an opening structure, the width of the opening structure of the test module in the direction perpendicular to the moving direction of the target is smaller than the width of the detector module, so as to ensure the accuracy of the sampled data collected by each detector module in step S120.
S120, acquiring sampling data acquired by each detector module in the detector when the center line of the opening structure overlaps with the center of the detector module in the moving process of the test module along the target moving direction.
In a specific embodiment, by controlling the test module to move along the target moving direction, when the center line of the opening structure included in the test module overlaps with the centers of the plurality of detector modules in a certain row, sampling data collected by the detector modules covered by the test module in the certain row is obtained.
Because the acquired sampling data acquired by each detection module in the detector are acquired when the center line of the opening structure of the test module overlaps with the center of the detector module, the X-rays received by each detector module are ensured to comprise more crosstalk rays, and the accuracy of the determined crosstalk data is further improved.
An exemplary case is that if the detector is a matrix of 100×64, where the number of channels of the detector is 100, and the number of rows of the detector is 64, that is, the detector includes 100×64 detector modules, the length of the test module is equal to the length of the direction in which the number of channels of the detector are located, the target moving direction of the test module is the direction of the rows of the detector, when the center line of the opening structure of the test module overlaps with the center of the detector module included in the first row of the detector, the sampled data collected by each detector module in the first row of the detector is obtained, when the center line of the opening structure of the test module overlaps with the center of the detector module included in the second row of the detector, the sampled data collected by each detector module in the second row of the detector is obtained, and so on until the sampled data collected by each detector module in the 64 th row of the detector is obtained.
S130, determining crosstalk data corresponding to different channels and different layers in the detector according to sampling data acquired by each detector module in the detector and position information corresponding to each detector module in the detector.
Wherein the location information includes a channel and a rank.
In a specific embodiment, the position information of each detector module arranged in an array in the detector is known, that is, the number of channels and the number of layers where each detector module arranged in an array in the detector is located are known, and after the sampling data collected by each detector module in the detector is obtained, crosstalk data corresponding to different channels and different layers in the detector can be determined according to the sampling data collected by each detector module in the detector and the position information corresponding to each detector module in the detector.
As a specific embodiment, determining crosstalk data corresponding to different channels and different layers in a detector according to sampling data collected by each detector module in the detector and position information corresponding to each detector module in the detector includes: sequentially acquiring first sampling data acquired by the detector modules corresponding to different layers of the same channel and second sampling data acquired by the detector modules corresponding to different layers of the same channel; according to first sampling data acquired by the detector modules corresponding to different layers of the same channel, determining first crosstalk data of different channels in the detector; and determining second crosstalk data of different layers in the detector according to the second sampling data acquired by the detector modules corresponding to different channels of the same layer.
According to first sampling data acquired by a detector module corresponding to different layers of the same channel, determining first crosstalk data of different channels in the detector comprises the following steps: acquiring first target sampling data with the maximum first sampling data from first sampling data corresponding to different layers of a target channel, and determining the target layer number corresponding to the first target sampling data; acquiring first sampling data corresponding to a first target layer number in a target channel and first sampling data corresponding to a second target layer number in the target channel, wherein the first target layer number is the previous layer number of the target layer number, and the second target layer number is the later layer number of the target layer number; and determining first crosstalk data of the target channel in the detector according to the first target sampling data, the first sampling data corresponding to the first target layer number in the target channel and the first sampling data corresponding to the second target layer number in the target channel.
According to the second sampling data collected by the detector modules corresponding to different channels with the same layer number, determining second crosstalk data with different layer numbers in the detector comprises the following steps: acquiring second target sampling data with the maximum second sampling data from second sampling data corresponding to channels with different target layer numbers, and determining a target channel corresponding to the second target sampling data; acquiring second sampling data corresponding to a first target channel in the target layer number and second sampling data corresponding to a second target channel in the target layer number, wherein the first target channel is a previous channel of the target channel, and the second target channel is a subsequent channel of the target channel; and determining second crosstalk data of the target layer number in the detector according to the second target sampling data, the second sampling data corresponding to the first target channel in the target layer number and the second sampling data corresponding to the second target channel in the target layer number.
The specific implementation process of determining the first crosstalk data of the target channel in the detector according to the first target sampling data, the first sampling data corresponding to the first target layer number in the target channel and the first sampling data corresponding to the second target layer number in the target channel is as follows: determining first ratio information according to first sampling data corresponding to the first target number of layers in the target channel and first target sampling data; determining second ratio information according to first sampling data corresponding to the first target layer number in the target channel and first sampling data corresponding to the second target layer number in the target channel; and determining first crosstalk data of the target channel in the detector according to the first ratio information and the second ratio information.
According to the second target sampling data, the second sampling data corresponding to the first target channel in the target layer number and the second sampling data corresponding to the second target channel in the target layer number, the specific implementation process of the second crosstalk data of the target layer number in the detector is determined as follows: determining third ratio information according to the first target sampling data and first sampling data corresponding to the second target layer number in the target channel; determining fourth ratio information according to first sampling data corresponding to a first target layer number in a target channel and first sampling data corresponding to a second target layer number in the target channel; and determining second crosstalk data of the target channel in the detector according to the third ratio information and the fourth ratio information.
Specifically, after the sample data collected by each detector module in the detector are obtained, first sample data collected by detector modules with different layers in the first channel are obtained, then the maximum value of the first sample data collected by each detector module with the corresponding layers in the first channel is obtained as first target sample data, the layer number (namely the target layer number) of the corresponding detector module when the first sample data is maximum is determined, then the first sample data collected by the detector module with the previous layer number adjacent to the target layer number and the first sample data collected by the detector module with the next layer number adjacent to the target layer number are obtained, crosstalk information of the first channel is determined by calculating the first comparison value information of the first target sample data collected by the detector module with the corresponding layer number adjacent to the target layer number and the first sample data collected by the detector module with the corresponding layer number adjacent to the first layer number, and calculating the crosstalk information of the first channel is not calculated until the crosstalk information of the first channel is determined by calculating the first comparison value of the first channel.
In addition, after the sampling data collected by each detector module in the detector are obtained, first obtaining second sampling data collected by the detector module of different channels in the first layer number, then obtaining the maximum value in the second sampling data collected by the detector module corresponding to each channel in the first layer number as second target sampling data, determining the channel (namely the target channel) of the corresponding detector module when the second sampling data is maximum, then obtaining the second sampling data collected by the detector module corresponding to the previous channel adjacent to the target channel and the second sampling data collected by the detector module corresponding to the next channel adjacent to the target channel, calculating the third ratio information of the second sampling data collected by the detector module corresponding to the next channel in the first layer number, calculating the fourth ratio information of the second sampling data collected by the detector module corresponding to the previous channel adjacent to the target channel, calculating the cross-talk data, and finally calculating the cross-talk data in the second layer number, and finally calculating the cross-talk data, and completing the calculation of the cross-talk data.
S140, determining target crosstalk data corresponding to each detector module according to crosstalk data corresponding to different channels and different layers in the detector.
After the crosstalk data corresponding to different channels and different layers in the detector are determined, the target crosstalk data corresponding to each detector module is determined according to the position information of each detector module.
In a specific embodiment, determining target crosstalk data corresponding to each detector module according to crosstalk data corresponding to different channels and different layers in the detector includes: according to the target position information corresponding to the target detector module, acquiring first target crosstalk data corresponding to the target channel and second target crosstalk data corresponding to the target layer number; and determining target crosstalk data corresponding to the target detector module according to the first target crosstalk data and the second target crosstalk data.
Specifically, if the position information of the detector module is the ith channel and the jth layer number, first target crosstalk data corresponding to the ith channel and second target crosstalk data corresponding to the jth layer number are obtained respectively, then the first target crosstalk data is weighted based on the first weighted value and the second weighted value of the layer number crosstalk data, the second target crosstalk data is weighted based on the second weighted value, and then the weighted first target crosstalk data and the weighted second target crosstalk data are summed to obtain the target crosstalk data corresponding to the target detector module.
According to the detector crosstalk determining method provided by the embodiment of the disclosure, firstly, a control signal is output to a CT scanning system in response to receiving a target operation triggered by a target object, so that the CT scanning system controls a test module to move along a target moving direction; then, in the process that the test module moves along the target moving direction, when the center line of the opening structure is overlapped with the center of the detector module, sampling data collected by each detector module in the detector are obtained; according to the sampling data collected by each detector module in the detector and the position information corresponding to each detector module in the detector, determining crosstalk data corresponding to different channels and different layers in the detector; and finally, according to the crosstalk data corresponding to different channels and different layers in the detector, determining target crosstalk data corresponding to each detector module, namely firstly, moving the test module to acquire sampling data acquired by each detector module, wherein the test module comprises an opening structure, and the acquired sampling data are sampling data acquired by the detector module when the central line of the opening structure is overlapped with the center of the detector module, so that the sampling data acquired by each detector module are more accurate.
On the basis of the foregoing embodiment, fig. 3 is a schematic flow chart of another method for determining crosstalk between detectors according to an embodiment of the present disclosure, as shown in fig. 3, before step S110, further includes:
s101, acquiring the length of the test module.
S102, determining a test section of the test module according to the length of the test module.
At this time, the implementation manner of step S110 is:
s111, responding to the target operation triggered by the received target object, and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to sequentially move along the target moving direction in each test interval.
Because the number of channels of the detector is large, the length of the test module may not satisfy the length of the detector, that is, may not completely cover all channels when the test module moves along the row number direction of the detector module, so the method for determining crosstalk of the detector provided by the embodiment of the present disclosure further includes, before executing step S110: and acquiring the length of the test module, and determining the test interval of the test module according to the length of the test module.
The detector is exemplified by a matrix of 200 x 64, wherein the number of channels of the detector is 200 and the number of rows of the detector is 64, i.e. the detector comprises 200 x 64 detector modules, and the test modules are moved in the row direction of the detector. If the length of the test module is equal to the length of 100 detector modules in the direction of the channel number, the determined test section of the test module comprises a first test section and a second test section. At this time, the test module is first controlled to move along the row number direction of the detectors in the first test section, when the center line of the opening structure of the test module overlaps with the center of 100 detector modules included in the first row of the detectors in the first test section, sampling data collected by each detector module in the first row of the first test section (i.e., the detector modules with the channel number of 1-100 in the first row) are obtained, when the center line of the opening structure of the test module overlaps with the center of the detector modules included in the second row of the detectors in the first test section, sampling data collected by each detector module in the second row of the first test section (i.e., the detector modules with the channel number of 1-100 in the first row) are obtained, and so on until sampling data collected by each detector module in the 64 th row of the first test section are obtained. And then controlling the test module to move along the row number direction of the detectors in the second test section, acquiring the sampling data acquired by each detector module in the first row of the second test section (namely, the detector module with the channel number of 101-200 in the first row) when the center line of the opening structure of the test module is overlapped with the center of 100 detector modules included in the first row of the detectors in the second test section, acquiring the sampling data acquired by each detector module in the second row of the second test section (namely, the detector module with the channel number of 101-200 in the second row) when the center line of the opening structure of the test module is overlapped with the center of the detector module in the second row of the detectors in the first test section, and so on until the sampling data acquired by each detector module in the 64 th row of the second test section is acquired.
The detector crosstalk determining method provided by the embodiment of the disclosure ensures that sampling data corresponding to all channels and all rows of the detector can be acquired.
On the basis of the foregoing embodiments, the embodiments of the present disclosure further provide a device for determining crosstalk of a detector, and fig. 4 is a schematic structural diagram of the device for determining crosstalk of a detector provided by the embodiments of the present disclosure, as shown in fig. 4, where the device for determining crosstalk of a detector includes:
the control module 410 is configured to output a control signal to the CT scanning system in response to receiving a target operation triggered by the target object, so that the CT scanning system controls the test module to move along the target moving direction, where the detector includes an array of detector modules, the test module includes an opening structure, and a width of the opening structure in a direction perpendicular to the target moving direction is smaller than a width of the detector module;
the sampling data obtaining module 420 is configured to obtain sampling data collected by each detector module in the detector when the center line of the opening structure overlaps with the center of the detector module during the movement of the test module along the target movement direction;
the crosstalk data determining module 430 is configured to determine crosstalk data corresponding to different channels and different layers in the detector according to sampling data collected by each detector module in the detector and position information corresponding to each detector module in the detector, where the position information includes the channels and the rows;
The target crosstalk data determining module 440 is configured to determine target crosstalk data corresponding to each detector module according to crosstalk data corresponding to different channels and different layers in the detector.
The detector crosstalk determining device provided by the embodiment of the disclosure includes that firstly, a control module responds to target operation triggered by a received target object and outputs a control signal to a CT scanning system so that the CT scanning system controls a test module to move along a target moving direction; then, in the process that the test module moves along the target moving direction, when the center line of the opening structure is overlapped with the center of the detector module, the sampling data acquired by each detector module in the detector are acquired by the sampling data acquisition module; the crosstalk data determining module determines crosstalk data corresponding to different channels and different layers in the detector according to sampling data acquired by each detector module in the detector and position information corresponding to each detector module in the detector; and finally, the target crosstalk data determining module determines target crosstalk data corresponding to each detector module according to crosstalk data corresponding to different channels and different layers in the detector, namely, firstly, the test module is moved to obtain sampling data collected by each detector module, and because the test module comprises an opening structure, the obtained sampling data are sampling data collected by the detector module when the central line of the opening structure is overlapped with the center of the detector module, the sampling data collected by each detector module are more accurate, in addition, the crosstalk data corresponding to different channels and different layers are sequentially determined by obtaining the sampling data collected by each detector module, and finally, the target crosstalk data of the detector module are determined based on the position information of the detector module, so that the accuracy of the determined target crosstalk data corresponding to each detector module is ensured.
In a specific embodiment, the detector crosstalk determining apparatus further includes: the test module length acquisition module and the test interval determination module;
the test module length acquisition module is used for acquiring the length of the test module;
the test interval determining module is used for determining a test interval of the test module according to the length of the test module;
at this time, the specific implementation process of the control module includes:
and responding to the target operation triggered by the received target object, and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to sequentially move along the target moving direction in each test interval.
In a specific embodiment, the crosstalk data determining module includes: the device comprises a sampling data acquisition unit, a first crosstalk data determination unit and a second crosstalk data determination unit:
the sampling data acquisition unit is used for sequentially acquiring first sampling data acquired by the detector modules corresponding to different layers of the same channel and second sampling data acquired by the detector modules corresponding to different layers of the same channel;
the first crosstalk data determining unit is used for determining first crosstalk data of different channels in the detector according to first sampling data acquired by the detector modules corresponding to different layers of the same channel;
The second crosstalk data determining unit is used for determining second crosstalk data of different layers in the detector according to second sampling data acquired by the detector modules corresponding to different channels of the same layer.
In a specific embodiment, the specific implementation procedure of the first crosstalk data determining unit includes:
acquiring first target sampling data with the maximum first sampling data from first sampling data corresponding to different layers of a target channel, and determining the target layer number corresponding to the first target sampling data;
acquiring first sampling data corresponding to a first target layer number in a target channel and first sampling data corresponding to a second target layer number in the target channel, wherein the first target layer number is the previous layer number of the target layer number, and the second target layer number is the later layer number of the target layer number;
and determining first crosstalk data of the target channel in the detector according to the first target sampling data, the first sampling data corresponding to the first target layer number in the target channel and the first sampling data corresponding to the second target layer number in the target channel.
In a specific embodiment, determining the first crosstalk data of the target channel in the detector according to the first target sampling data, the first sampling data corresponding to the first target layer number in the target channel, and the first sampling data corresponding to the second target layer number in the target channel includes:
Determining first ratio information according to first sampling data corresponding to the first target number of layers in the target channel and first target sampling data;
determining second ratio information according to first sampling data corresponding to the first target layer number in the target channel and first sampling data corresponding to the second target layer number in the target channel;
and determining first crosstalk data of the target channel in the detector according to the first ratio information and the second ratio information.
In a specific embodiment, the specific implementation procedure of the second crosstalk data determining unit includes:
acquiring second target sampling data with the maximum second sampling data from second sampling data corresponding to channels with different target layer numbers, and determining a target channel corresponding to the second target sampling data;
acquiring second sampling data corresponding to a first target channel in the target layer number and second sampling data corresponding to a second target channel in the target layer number, wherein the first target channel is a previous channel of the target channel, and the second target channel is a subsequent channel of the target channel;
and determining second crosstalk data of the target layer number in the detector according to the second target sampling data, the second sampling data corresponding to the first target channel in the target layer number and the second sampling data corresponding to the second target channel in the target layer number.
In a specific embodiment, determining the second crosstalk data of the target layer number in the detector according to the second target sampling data, the second sampling data corresponding to the first target channel in the target layer number, and the second sampling data corresponding to the second target channel in the target layer number includes:
determining third ratio information according to the first target sampling data and first sampling data corresponding to the second target layer number in the target channel;
determining fourth ratio information according to first sampling data corresponding to the first target layer number in the target channel and first sampling data corresponding to the second target layer number in the target channel;
and determining second crosstalk data of the target channel in the detector according to the third ratio information and the fourth ratio information.
In a specific embodiment, the specific implementation process of the target crosstalk data determining module includes:
according to the target position information corresponding to the target detector module, acquiring first target crosstalk data corresponding to the target channel and second target crosstalk data corresponding to the target layer number;
and determining target crosstalk data corresponding to the target detector module according to the first target crosstalk data and the second target crosstalk data.
The embodiment of the application also provides a computer device, referring specifically to fig. 5, and fig. 5 is a basic structural block diagram of the computer device of the embodiment.
The computer device includes a memory 510 and a processor 520 communicatively coupled to each other via a system bus. It should be noted that only computer devices having components 510-520 are shown in the figures, but it should be understood that not all of the illustrated components are required to be implemented and that more or fewer components may be implemented instead. It will be appreciated by those skilled in the art that the computer device herein is a device capable of automatically performing numerical calculations and/or information processing in accordance with predetermined or stored instructions, the hardware of which includes, but is not limited to, microprocessors, application specific integrated circuits (Application Specific Integrated Circuit, ASICs), programmable gate arrays (fields-ProgrammableGate Array, FPGAs), digital processors (Digital Signal Processor, DSPs), embedded devices, etc.
The computer device may be a desktop computer, a notebook computer, a palm computer, a cloud server, or the like. The computer device can perform man-machine interaction with a user through a keyboard, a mouse, a remote controller, a touch pad or voice control equipment and the like.
The memory 510 includes at least one type of readable storage medium including non-volatile memory (non-volatile memory) or volatile memory, such as flash memory (flash memory), hard disk, multimedia card, card memory (e.g., SD or DX memory, etc.), random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (erasable programmable read-only memory, EPROM), electrically erasable programmable read-only memory (electricallyerasable programmable read-only memory, EEPROM), programmable read-only memory (programmable read-only memory, PROM), magnetic memory, RAM, optical disk, etc., which may include static or dynamic. In some embodiments, the memory 510 may be an internal storage unit of a computer device, such as a hard disk or memory of the computer device. In other embodiments, the memory 510 may also be an external storage device of a computer device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, or a Flash Card (Flash Card) provided on the computer device. Of course, memory 510 may also include both internal storage units for computer devices and external storage devices. In this embodiment, the memory 510 is typically used to store an operating system installed on a computer device and various types of application software, such as program codes of the above-described methods. In addition, the memory 510 may also be used to temporarily store various types of data that have been output or are to be output.
Processor 520 is typically used to perform the overall operations of the computer device. In this embodiment, the memory 510 is configured to store program codes or instructions, the program codes include computer operation instructions, and the processor 520 is configured to execute the program codes or instructions stored in the memory 510 or process data, such as the program codes for executing the above-mentioned method.
Herein, the bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, a peripheral component interconnect (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The bus system may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.
Another embodiment of the present application also provides a computer-readable medium, which may be a computer-readable signal medium or a computer-readable medium. A processor in a computer reads computer readable program code stored in a computer readable medium, such that the processor is capable of performing the functional actions specified in each step or combination of steps in the above-described method; a means for generating a functional action specified in each block of the block diagram or a combination of blocks.
The computer readable medium includes, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared memory or semiconductor system, apparatus or device, or any suitable combination of the foregoing, the memory storing program code or instructions, the program code including computer operating instructions, and the processor executing the program code or instructions of the above-described methods stored by the memory.
The definition of memory and processor may refer to the description of the embodiments of the computer device described above, and will not be repeated here.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The functional units or modules in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all or part of the technical solution contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RandomAccess Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
As used herein and in the appended claims, the singular forms of words include the plural and vice versa, unless the context clearly dictates otherwise. Thus, when referring to the singular, the plural of the corresponding term is generally included. Similarly, the terms "comprising" and "including" are to be construed as being inclusive rather than exclusive. Likewise, the terms "comprising" and "or" should be interpreted as inclusive, unless such an interpretation is expressly prohibited herein. Where the term "example" is used herein, particularly when it follows a set of terms, the "example" is merely exemplary and illustrative and should not be considered exclusive or broad.
Further aspects and scope of applicability will become apparent from the description provided herein. It should be understood that various aspects of the present application may be implemented alone or in combination with one or more other aspects. It should also be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
While several embodiments of the present disclosure have been described in detail, it will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present disclosure without departing from the spirit and scope of the disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A method for determining crosstalk of a detector, comprising:
responding to target operation triggered by a received target object, and outputting a control signal to a CT scanning system so that the CT scanning system controls a test module to move along a target moving direction, wherein the detector comprises detector modules which are arranged in an array, the test module comprises an opening structure, and the width of the opening structure is smaller than the width of the detector modules in a direction perpendicular to the target moving direction;
when the center line of the opening structure is overlapped with the center of the detector module in the moving process of the test module along the target moving direction, acquiring sampling data acquired by each detector module in the detector;
according to sampling data acquired by each detector module in the detector and position information corresponding to each detector module in the detector, determining crosstalk data corresponding to different channels and different layers in the detector, wherein the position information comprises the channels and the rows;
and determining target crosstalk data corresponding to each detector module according to the crosstalk data corresponding to different channels and different layers in the detector.
2. The method of claim 1, wherein in response to receiving a target operation triggered by a target object, outputting a control signal to the CT scanning system to cause the CT scanning system to control the test module to move in a target movement direction, further comprising:
acquiring the length of the test module;
determining a test interval of the test module according to the length of the test module;
the responding to the target operation triggered by the received target object outputs a control signal to the CT scanning system so that the CT scanning system controls the test module to move along the target moving direction, and the responding comprises the following steps:
and responding to the target operation triggered by the received target object, and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to sequentially move along the target moving direction in each test interval.
3. The method according to claim 1 or 2, wherein determining crosstalk data corresponding to different channels and different layers in the detector according to the sampled data collected by each detector module in the detector and the position information corresponding to each detector module in the detector includes:
Sequentially acquiring first sampling data acquired by the detector modules corresponding to different layers of the same channel and second sampling data acquired by the detector modules corresponding to different layers of the same channel;
according to first sampling data acquired by detector modules corresponding to different layers of the same channel, determining first crosstalk data of different channels in the detector;
and determining second crosstalk data of different layers in the detector according to the second sampling data acquired by the detector modules corresponding to different channels of the same layer.
4. The method of claim 3, wherein determining the first crosstalk data of different channels in the detector according to the first sampling data collected by the detector module corresponding to different layers of the same channel comprises:
acquiring first target sampling data with the maximum first sampling data from first sampling data corresponding to different layers of a target channel, and determining the target layer number corresponding to the first target sampling data;
acquiring first sampling data corresponding to a first target layer number in a target channel and first sampling data corresponding to a second target layer number in the target channel, wherein the first target layer number is the previous layer number of the target layer number, and the second target layer number is the later layer number of the target layer number;
And determining first crosstalk data of the target channel in the detector according to the first target sampling data, the first sampling data corresponding to the first target layer number in the target channel and the first sampling data corresponding to the second target layer number in the target channel.
5. The method of claim 4, wherein determining the first crosstalk data of the target channel in the detector based on the first target sample data, the first sample data corresponding to the first target layer number in the target channel, and the first sample data corresponding to the second target layer number in the target channel comprises:
determining first ratio information according to the first target sampling data and first sampling data corresponding to a second target layer number in the target channel;
determining second ratio information according to first sampling data corresponding to a first target layer number in the target channel and first sampling data corresponding to a second target layer number in the target channel;
and determining first crosstalk data of a target channel in the detector according to the first ratio information and the second ratio information.
6. The method of claim 3, wherein determining the second crosstalk data of different layers in the detector according to the second sampling data collected by the detector modules corresponding to different channels of the same layer comprises:
Acquiring second target sampling data with the maximum second sampling data from second sampling data corresponding to channels with different target layer numbers, and determining a target channel corresponding to the second target sampling data;
acquiring second sampling data corresponding to a first target channel in a target layer number and second sampling data corresponding to a second target channel in the target layer number, wherein the first target channel is a previous channel of the target channel, and the second target channel is a subsequent channel of the target channel;
and determining second crosstalk data of the target layer number in the detector according to the second target sampling data, the second sampling data corresponding to the first target channel in the target layer number and the second sampling data corresponding to the second target channel in the target layer number.
7. The method of claim 6, wherein determining the second crosstalk data for the target layer number in the detector based on the second target sample data, the second sample data for the first target channel in the target layer number, and the second sample data for the second target channel in the target layer number comprises:
determining third ratio information according to the first target sampling data and first sampling data corresponding to a second target layer number in the target channel;
Determining fourth ratio information according to first sampling data corresponding to the first target layer number in the target channel and first sampling data corresponding to the second target layer number in the target channel;
and determining second crosstalk data of a target channel in the detector according to the third ratio information and the fourth ratio information.
8. The method of claim 1, wherein determining the target crosstalk data corresponding to each of the detector modules according to the crosstalk data corresponding to different channels and different layers in the detector comprises:
according to the target position information corresponding to the target detector module, acquiring first target crosstalk data corresponding to the target channel and second target crosstalk data corresponding to the target layer number;
and determining target crosstalk data corresponding to the target detector module according to the first target crosstalk data and the second target crosstalk data.
9. A detector crosstalk determining apparatus, comprising:
the control module is used for responding to the target operation triggered by the received target object and outputting a control signal to the CT scanning system so that the CT scanning system controls the test module to move along the target moving direction, wherein the detector comprises detector modules which are arranged in an array, the test module comprises an opening structure, and the width of the opening structure is smaller than the width of the detector module in the direction perpendicular to the target moving direction;
The sampling data acquisition module is used for acquiring sampling data acquired by each detector module in the detector when the center line of the opening structure is overlapped with the center of the detector module in the process that the test module moves along the target moving direction;
the crosstalk data determining module is used for determining crosstalk data corresponding to different channels and different layers in the detector according to sampling data acquired by each detector module in the detector and position information corresponding to each detector module in the detector, wherein the position information comprises the channels and the rows;
and the target crosstalk data determining module is used for determining target crosstalk data corresponding to each detector module according to the crosstalk data corresponding to different channels and different layers in the detector.
10. A computer device, comprising:
one or more processors;
storage means for storing one or more programs,
when executed by the one or more processors, causes the one or more processors to implement the method of any of claims 1-8.
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