CN117414150A

CN117414150A - CT image evaluation method and die body

Info

Publication number: CN117414150A
Application number: CN202311597812.4A
Authority: CN
Inventors: 方汛平; 马骏骑
Original assignee: Hefei Yofo Medical Technology Co ltd
Current assignee: Hefei Yofo Medical Technology Co ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-01-19

Abstract

The invention discloses a CT image evaluation method, which comprises the steps of stably placing a die body in an imaging area, and filling purified water into the die body; the software closes the image post-processing function, and each mode of the equipment executes scanning operation; under each mode, using a regional measuring tool to obtain CT values of each material; and evaluating the measured result of each device for comparison, wherein the error is within the allowable range. The CT image evaluation die body comprises a die body base, a detection tool and a die body upper cover, wherein the bottom of the detection tool is fixedly arranged in the die body base, the die body upper cover is fastened at the top of the die body base, and the imaging effect of each material in different scanning modes can be analyzed. By comparing the densities of various tissues in the model body, the sensitivity and the resolution of the CT equipment to different types of tissues can be deeply known, and the data obtained in all modes are analyzed, so that the integral imaging performance of the model body under different conditions can be obtained, and the performance of the CT equipment can be more comprehensively evaluated.

Description

CT image evaluation method and die body

Technical Field

The disclosure relates to the technical field of CT, in particular to a CT image evaluation method and a die body.

Background

The phantom is an important medium for objectively evaluating the quality of dental CT images. The medical industry standard YY/0795-2010 oral cavity X-ray digital tomography equipment special technical condition recommends to use a DIGIDENT dental test phantom which can better detect partial parameters, but the detection module is expensive to purchase.

To ensure uniformity/consistency of CT images, the current industry generally adopts a scanning phantom Catphan500, selects a measurement area of about 100mm (2) from the center of the scanned image, and records CT values.

The phantom Catphas 500 is scanned with different layer thicknesses to obtain a set of line segments, the window width and window level are adjusted, and the layer thickness is calculated. The consistency among the images is obtained, the first image, the middle image and the last image of the body model Catphan500 scanned once are obtained, the diameter of the center position is 10% of the diameter of the image of the measuring device, the CT value of the image is the CT value, and the consistency among the images is represented by the extremely poor.

Industry recommended equipment conditions now: DIGIDENT dental test phantom, catphan500 phantom, but the prior art is expensive, and a set of phantom can not be configured for each equipment standard, and consistency judgment can not be performed when each equipment is delivered at the terminal.

Disclosure of Invention

The invention aims to provide a CT image evaluation method and a die body, which are used for solving at least one technical problem in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions.

According to an aspect of the present invention, there is provided a CT image evaluation method including:

step S100, the die body is stably placed in an imaging area of a CT scanner, and purified water is filled in the die body;

step 200, opening CT scanner software, closing an image post-processing function, keeping an original state of an image obtained by scanning, and selecting a scanning mode;

step S300, starting scanning operation, sequentially executing each selected scanning mode, scanning by a CT scanner according to set parameters in each mode to obtain corresponding CT images, selecting corresponding areas in the interested areas by using an area measuring tool of CT scanner software in each scanning mode, wherein each area corresponds to different materials or structures, and extracting CT values from the CT images to represent the characteristics of different materials; and

step 400, recording the acquired CT values of each material, comparing the CT values with a preset standard value or a reference value, and evaluating the components and characteristics of different materials in the die body through comparison.

According to the CT image evaluation method of at least one embodiment of the invention, when the die body is stably placed in an imaging area of a CT scanner, the die body is completely covered on the imaging area, and imaging parameters of the CT scanner are automatically adjusted to adapt to different die body sizes and shapes, so that the imaging area is ensured to be completely covered without inclination or movement.

According to the CT image evaluation method of at least one embodiment of the present invention, in step S200, control software of the CT scanner is turned on after the mold body is properly placed, and any image post-processing functions including at least denoising and enhancement are turned off, so as to maintain the original state of the obtained image, thereby maintaining the original state of the image obtained during scanning without being affected by additional processing, wherein the system of the image post-processing functions is disabled at least before or during the start of scanning, and after the mold body is properly placed, an appropriate scanning mode is selected by a user interface or an automatic intelligent algorithm, wherein the scanning mode includes at least intelligent adjustment of energy level, detector configuration, scanning speed parameters.

According to another aspect of the present invention, there is provided a CT image evaluation mold body used in the CT image evaluation method as set forth in any one of the above, the CT image evaluation mold body including a mold body base, a detection tool, and a mold body upper cover, wherein the bottom of the detection tool is fixedly installed inside the mold body base, and the mold body upper cover is fastened to the top of the mold body base.

According to the CT image evaluation die body in at least one embodiment of the invention, the die body base and the die body upper cover are made of transparent acrylic materials, the die body base is of a cylindrical structure, and purified water is contained in the die body base.

According to the CT image evaluation die body of at least one embodiment of the invention, at least 6 groups of detection tools are arranged, and the materials of the 6 groups of detection tools are columnar bodies made of different materials.

According to the CT image evaluation die body of at least one embodiment of the invention, the materials of the 6 groups of detection tools are respectively aluminum, polyvinyl chloride, polytetrafluoroethylene, polyoxymethylene resin, low-density polyethylene and hollow plastic tubes.

According to the CT image evaluation die body of at least one embodiment of the invention, the detection tools of the hollow plastic pipe material are arranged at the center of the base of the die body, the other detection tools of the 6 groups of detection tools are uniformly arranged in the base of the die body, and the detection tools are adhered to the base of the die body.

According to still another aspect of the present invention, there is provided an electronic apparatus including:

a memory storing execution instructions; and

a processor executing the execution instructions stored by the memory, causing the processor to perform the CT image evaluation method as described in any one of the above.

According to a further aspect of the present invention, there is provided a readable storage medium having stored therein execution instructions which, when executed by a processor, are adapted to carry out the CT image evaluation method as defined in any one of the above.

Compared with the prior art, the invention has the beneficial effects that:

after the scanning and comparison of all modes are completed, the data obtained by each scanning mode can be integrated by utilizing advanced data processing and analysis technology to obtain the comprehensive characteristic evaluation of the die body, so that the comprehensive characteristic evaluation of the die body not only comprises the detailed analysis of the distribution and the density of different materials, but also can provide comprehensive information about the performance of CT equipment under the condition of simulating a real body.

First, for each material, the imaging effect of the material in different scan modes can be analyzed. By comparing the densities of various tissues in the model, the sensitivity and resolution of the CT apparatus to different types of tissues can be understood in depth.

And secondly, the comprehensive characteristic evaluation also comprises comprehensive analysis of the overall imaging quality of the model. By analyzing the data obtained in all modes, the overall imaging performance of the phantom under different conditions can be obtained, thereby more comprehensively evaluating the performance of the CT device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a flowchart of a CT image evaluation method.

Fig. 2 is a schematic diagram of a CT image evaluation phantom.

FIG. 3 is a schematic view of the structure of the CT image evaluation phantom in the A-A direction.

FIG. 4 is a schematic view of the structure of the B-B direction in the CT image evaluation phantom.

Detailed Description

The present disclosure is described in further detail below with reference to the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant content and not limiting of the present disclosure. It should be further noted that, for convenience of description, only a portion relevant to the present disclosure is shown in the drawings.

In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The technical aspects of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the exemplary implementations/embodiments shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, features of the various implementations/embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concepts of the present disclosure.

The use of cross-hatching and/or shading in the drawings is typically used to clarify the boundaries between adjacent components. As such, the presence or absence of cross-hatching or shading does not convey or represent any preference or requirement for a particular material, material property, dimension, proportion, commonality between illustrated components, and/or any other characteristic, attribute, property, etc. of a component, unless indicated. In addition, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.

When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. For this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "under … …," under … …, "" under … …, "" lower, "" above … …, "" upper, "" above … …, "" higher "and" side (e.g., as in "sidewall"), etc., to describe one component's relationship to another (other) component as illustrated in the figures. In addition to the orientations depicted in the drawings, the spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below" … … can encompass both an orientation of "above" and "below". Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising," and variations thereof, are used in the present specification, the presence of stated features, integers, steps, operations, elements, components, and/or groups thereof is described, but the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximation terms and not as degree terms, and as such, are used to explain the inherent deviations of measured, calculated, and/or provided values that would be recognized by one of ordinary skill in the art.

The CT image evaluation method and phantom of the present disclosure are described below with reference to FIGS. 1-4.

S100, the die body is stably placed in an imaging area of a CT scanner, and purified water is filled in the die body.

Placing in an imaging area and filling purified water:

the user first places the phantom to be evaluated smoothly within the imaging region of the CT scanner. Ensuring that the phantom completely covers the imaging area and does not tilt or shift. To eliminate possible influencing factors, the interior of the mold body is filled with purified water. The purpose of this step is to ensure that the image obtained during scanning accurately reflects the internal structure of the phantom, independent of air or other factors.

Sample preparation:

the phantom to be evaluated is suitably prepared before starting the evaluation. This may include removing foreign material, cleaning the surface to ensure that the phantom is not disturbed during placement and scanning.

Imaging region positioning:

the phantom is gently placed within the imaging region of the CT scanner. Ensuring that the position of the phantom corresponds to the coordinate system of the scanner so as to obtain an image corresponding to the real structure of the phantom during scanning.

Positional stability:

ensure that the die body keeps stable when being placed, and avoid tilting or moving. The use of a tray, bracket or suitable fixture ensures that the phantom does not change position during scanning, thereby avoiding blurring or distortion of the image.

Filling water:

the purified water was filled to simulate the tissue density and properties inside the mold body. By filling purified water in the die body, the influence of factors such as gas existence, scattering and absorption on CT images can be eliminated, and thus more accurate image results can be obtained.

Purity of water:

ensure that the water filled into the die body is pure and free of any impurity or harmful substance. This can be accomplished by using deionized water or other suitable purification methods to ensure that the CT images obtained are not affected by water quality.

Degree of filling of water:

the amount of filled pure water should be sufficient to fill the interior space of the mold body to ensure that the water fills all the cavities, tubes and pores, thereby simulating the condition of real biological tissue. Too little water may cause air to be present, affecting image quality.

By properly positioning the phantom in the imaging region and filling the region with purified water, the effects of air and other interfering factors on the CT image can be eliminated, thereby ensuring that the acquired image accurately reflects the internal structure and characteristics of the phantom.

S200, opening CT scanner software, closing an image post-processing function, keeping an original state of an image obtained by scanning, and selecting a scanning mode.

After the phantom is properly placed, the user opens the control software for the CT scanner. To ensure that the original state image is obtained, the image post-processing function should be turned off. In selecting the appropriate scan pattern, different energy levels, detector configurations, scan speeds, etc. need to be considered. The choice of these parameters depends on the nature of the phantom and the level of image detail required.

Opening control software:

after the user places the phantom in the imaging area and confirms the filling with purified water, the control software of the CT scanner is opened, which provides an interface for the user to interact with the scanner.

The image post-processing function is turned off:

before starting the setup, it is necessary to shut down any image post-processing functions, such as denoising, enhancement, etc. This is to ensure that the obtained image remains in the original state and is thus not affected by additional processing at the time of subsequent analysis.

Selecting an appropriate scan pattern:

depending on the desired evaluation target and the nature of the phantom, an appropriate scan pattern is selected. The scan pattern includes different parameter settings such as X-ray energy, number of detectors, scan speed, etc. The choice of these parameters affects the resolution, contrast and noise level of the image.

Energy level selection:

depending on the composition of the phantom and the study requirements, an appropriate X-ray energy level is selected. Different energy levels have an effect on the contrast and resolution of the display of different materials and tissues.

Detector configuration:

depending on the size and shape of the scan area, a suitable detector configuration is selected. Some scan patterns allow for the use of different numbers and arrangements of detectors to obtain more detailed or wider image coverage.

Scanning speed:

the choice of scan speed affects the time of image acquisition, as well as the spatial resolution of the image. In selecting the scanning speed, the need to obtain high quality images and reduce the radiation dose needs to be balanced.

Other parameter settings:

other parameters, such as slice thickness, spacing, reconstruction algorithms, etc., may also be adjusted according to specific evaluation requirements. The choice of these parameters depends on the purpose and application of the evaluation.

By properly setting the software and scan mode of the CT scanner, image data suitable for the evaluation target can be obtained. Different modes and parameter combinations may reveal different characteristics of the die body, providing valuable data for subsequent quantitative analysis and die body evaluation. In selecting parameters, it is necessary to fully understand the nature of the die body and the requirements of the evaluation to ensure accurate and reliable results are obtained.

S300, starting scanning operation, sequentially executing each selected scanning mode, scanning by a CT scanner according to set parameters in each mode to obtain corresponding CT images, selecting corresponding areas in the interested areas by using an area measuring tool of CT scanner software in each scanning mode, wherein each area corresponds to different materials or structures, and extracting CT values from the CT images to represent the characteristics of different materials.

Performing a multi-mode scanning operation:

after the scan starts, the CT scanner sequentially executes each selected scan mode according to preset parameters. Each mode may be focused on a different characteristic within the mold body, such as bone structure, soft tissue, etc. Each scan produces a set of CT images that will be used in subsequent analysis.

Scanning sequence:

parameters are preset in the CT scanner control software to sequentially perform different scan modes. The design of the scan sequence typically allows for minimizing the movement of the phantom and the mechanical stability of the scanner.

Refining scanning parameters:

for each mode, the scan parameters, such as X-ray tube voltage, current, scan time, etc., are further refined. Different scan parameter settings affect the quality of the image, contrast and radiation dose.

Automatic switching mode:

after the scanning operation is started, the CT scanner can automatically switch different modes according to a preset scanning sequence. Each switch performs a corresponding scan using the previously set parameters to obtain image data of different characteristics.

Image acquisition:

each scan operation produces a set of CT images, each representing a particular scan pattern. These images will capture different characteristics of the motif at different window width and level settings.

Image storage and integration:

the acquired image data may be stored in a storage system of the CT scanner. Subsequent analysis and evaluation integrate images of different modes as needed to obtain overall phantom characteristic information.

By performing a multi-mode scanning operation, image data covering different characteristics of the phantom may be obtained. For example, a bone window may highlight bone structure, a soft tissue window may show the distribution of tissue, and a vascular window may reveal the condition of the vascular system. These image data will provide multi-dimensional information for subsequent quantitative analysis and phantom evaluation, helping to more fully understand the internal construction and characteristics of the phantom.

Region selection and measurement:

in each scan mode, a region of interest is selected from the acquired images using a region measurement tool of CT scan software. These regions may correspond to different materials, tissue types, or phantom locations. By plotting the region outline, the CT value of a specific region can be measured.

Selecting a scanning mode:

depending on the evaluation objective, a specific scan pattern is selected, the parameter settings of which are adapted to the tissue structure or property of interest.

Opening an image:

the acquired CT image in the specific scan mode is turned on. These images will show the different organization and structure of the phantom.

Region measuring tool:

the region of interest is selected in the image using a region measurement tool provided by CT scanning software. These regions may correspond to different materials, tissue types, mold body locations, etc.

Region selection:

a contour is drawn on the image using a mouse or other input device to select the target area.

And (3) region outline drawing:

when the contour of the region is drawn, the contour is ensured to be matched with the boundary of the selected region so as to accurately represent the range of the target region.

CT value measurement:

in the selected region, the CT scanning software automatically calculates the average CT value in the region.

And (3) data recording:

the measured CT values are recorded for later analysis and comparison. Each selected region corresponds to a particular CT value that may be used to represent the density characteristics of different tissues within the phantom.

Multi-zone selection (optional):

multiple regions may be selected for measurement in the same image to obtain more comprehensive data. This allows for comparison of CT values for different materials in different scan modes, leading to more specific conclusions.

CT values of different tissues in the die body can be obtained through region selection and measurement, so that the density and the characteristics of different materials can be quantitatively analyzed. These CT values can be used for subsequent comparison, evaluation and analysis, helping to make more accurate decisions in the fields of diagnosis, research, treatment planning, etc.

S400, recording the acquired CT values of each material, comparing the CT values with preset standard values or reference values, and setting scanner software and modes by comparing and evaluating components and characteristics of different materials in the die body.

CT value extraction:

CT values are extracted from CT images of the selected region. CT values are obtained by measuring the amount of X-ray absorption, which is related to the density and composition of the tissue. Different materials will show different CT values in the CT image, which makes CT a powerful tool for quantitative analysis.

CT image of selected region:

in the previous region selection and measurement step, you have selected the region of interest and acquired a CT image of that region.

CT value measurement position:

in the CT image, a position for measuring the CT value is indicated. This is typically at a central location or at a specific location in the selected area.

CT value extraction:

using the measuring tool of CT scanning software, a small region (called the region of interest ROI) is selected to measure the CT value. The software will calculate the average CT value for the pixels in the ROI.

ROI position selection:

the location of the ROI should be selected to represent a specific tissue or region within the mold. If there are multiple regions in the same image to be measured, each ROI is ensured to be on the corresponding structure.

Average CT value calculation:

the software calculates the average CT value for the pixels within the selected ROI. This average CT value is a value extracted from the image and represents the average absorption of X-rays in the region.

Unit calibration:

the CT value is usually expressed in Hastefield units (HU for short), which are based on CT values of water and air. The CT value of water was defined as 0HU, while the CT value of air was-1000 HU. CT values of other materials are calibrated against these references.

And (3) data recording:

the measured average CT value is recorded.

By extracting CT values, density information of different areas in the model body can be obtained. The extraction of CT values is a core part of quantitative analysis based on CT images, and provides important data support for medical diagnosis and research.

CT value comparison and record:

the CT value of each material is recorded and compared with the preset standard value or reference value. The aim of the comparison is to evaluate whether the material composition and the characteristics of different areas in the model body are consistent with the expected values, so as to determine the accuracy and the reliability of the CT value.

Obtaining CT values:

in the previous step, you have extracted CT values of various areas from different CT images. Each CT value represents the X-ray absorption of the corresponding region, reflecting the tissue density and composition of that region.

Standard value or reference value setting:

depending on the objective of evaluation, you can set a standard value or a reference value in advance. These values are typically CT values of known tissues or materials and are used as a basis for comparison. For example, you can set a standard CT value for a tissue such as bone, muscle, fat, etc.

CT value comparison:

the CT value obtained from the phantom is compared with a preset standard or reference value. The manner of comparison may be a direct numerical comparison or an evaluation by calculating relative errors or differences.

Error analysis:

and evaluating the error between the obtained CT value and the standard value. This may help to understand the accuracy and reliability of the CT value measurement, as well as the deviations that may occur under different conditions.

Recording comparison results:

and recording the comparison result, wherein the comparison result comprises the CT value, standard value, error and other information of each region. These data will be used for subsequent conclusions and analysis.

Reliability evaluation:

and evaluating the reliability of CT values of different areas in the model body according to the comparison result. If the CT value is very close to the standard value, the measurement result can be considered to be accurate.

By comparing the obtained CT values with standard or reference values, the material composition and characteristics of the various regions within the phantom can be determined.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure. The processor performs the various methods and processes described above. For example, method embodiments in the present disclosure may be implemented as a software program tangibly embodied on a machine-readable medium, such as a memory. In some embodiments, part or all of the software program may be loaded and/or installed via memory and/or a communication interface. One or more of the steps of the methods described above may be performed when a software program is loaded into memory and executed by a processor. Alternatively, in other embodiments, the processor may be configured to perform one of the methods described above in any other suitable manner (e.g., by means of firmware).

Logic and/or steps represented in the flowcharts or otherwise described herein may be embodied in any readable storage medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.

It should be understood that portions of the present disclosure may be implemented in hardware, software, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

Those of ordinary skill in the art will appreciate that all or part of the steps implementing the method of the above embodiments may be implemented by a program to instruct related hardware, and the program may be stored in a readable storage medium, where the program when executed includes one or a combination of the steps of the method embodiments. The storage medium may be a volatile/nonvolatile storage medium.

Furthermore, each functional unit in each embodiment of the present disclosure may be integrated into one processing module, or each unit may exist alone physically, or two or more units may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product. The storage medium may be a read-only memory, a magnetic disk or optical disk, etc.

The CT image evaluation die body is a device specially used for simulating and evaluating the performance of a Computer Tomography (CT) device, and mainly comprises three parts, namely a die body base 1, a detection tool 3 and a die body upper cover 2.

Firstly, the die body base 1 is the basis of the whole structure, and transparent acrylic materials are adopted to ensure that the operation and the change performed inside the die body base 1 can be clearly seen. The design of the die body base 1 adopts a cylindrical structure, and the shape is helpful for maintaining the stability of the die body base 1. The inside of the base is filled with purified water, so that the density of human tissues can be simulated, and the authenticity and accuracy of CT scanning are ensured.

Secondly, the detection tool 3 is a key component of the die body and is used for simulating tissues with different materials and densities so as to evaluate the imaging effect of the CT equipment on the tissues. The bottom of detecting frock 3 is fixed mounting in the inside of die body base, firmly pastes through glue, ensures that can not take place the aversion in the testing process. The six groups of detection tools are made of different materials, namely aluminum, polyvinyl chloride, polytetrafluoroethylene, polyoxymethylene resin, low-density polyethylene and hollow plastic tubes. The selection of these materials covers the different tissue types commonly found in the human body, thereby enabling the CT apparatus to more fully evaluate its imaging capabilities under simulated conditions.

Wherein, the detection frock of hollow plastic tubing material is set up in the central point of die body base 1 to simulate the cavity structure of human organ. The other five groups of detection tools 3 are uniformly distributed in the die body base 1 so as to simulate different tissue structures of each part of the human body during actual CT scanning. Such a design can help medical professionals more fully evaluate the imaging effect of CT devices on different tissues.

Finally, the die body upper cover 2 is tightly buckled at the top of the die body base 1, so that the stability of the internal environment is ensured, and the influence of external interference on the test result is prevented. The mold body upper cover 2 is made of transparent acrylic material, so that an observer can see the condition inside the base clearly.

In combination, the die body base 1, the detection tool 3 and the die body upper cover 2 through which the CT image evaluation die body passes can provide comprehensive evaluation on the performance of CT equipment in a simulation environment.

The present disclosure also provides an electronic device, including: a memory storing execution instructions; and a processor or other hardware module executing the execution instructions stored in the memory, so that the processor or other hardware module executes the CT image evaluation method of the above embodiment.

The present disclosure also provides a readable storage medium having stored therein execution instructions which, when executed by a processor, are to implement the CT image evaluation method of any one of the above embodiments.

For the purposes of this description, a "readable storage medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable read-only memory (CDROM). In addition, the readable storage medium may even be paper or other suitable medium on which the program can be printed, as the program can be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner if necessary, and then stored in a memory.

The present disclosure also provides a computer program product comprising computer programs/instructions which when executed by a processor implement the CT image evaluation method of any of the above embodiments.

In the description of the present specification, a description referring to the terms "one embodiment/mode," "some embodiments/modes," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present disclosure. In this specification, the schematic representations of the above terms are not necessarily the same embodiments/modes or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/implementations or examples described in this specification and the features of the various embodiments/implementations or examples may be combined and combined by persons skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.

Claims

1. A CT image evaluation method, comprising:

2. The method of claim 1, wherein the phantom is placed in the imaging region of the CT scanner smoothly, the phantom is fully covered over the imaging region, and the imaging parameters of the CT scanner are automatically adjusted to accommodate different phantom sizes and shapes, to ensure the imaging region is fully covered, and without tilting or moving.

3. The method of claim 1, wherein in step S200, control software of the CT scanner is turned on after the mold body is properly placed and any image post-processing functions including at least denoising and enhancement are turned off by a software interface or an automated program to maintain the original state of the obtained image so that the image obtained during scanning remains in the original state without being affected by additional processing, wherein the system of the image post-processing functions is disabled at least before or during the start of scanning, and an appropriate scanning mode is selected by a user interface or an automated intelligent algorithm after the mold body is properly placed, wherein the scanning mode includes at least intelligent adjustment of energy level, detector configuration, scanning speed parameters.

4. A CT image evaluation phantom for use in the CT image evaluation method according to any one of claims 1 to 3, wherein the CT image evaluation phantom comprises a phantom base, a detection tool, and a phantom upper cover, the bottom of the detection tool is fixedly installed inside the phantom base, and the phantom upper cover is fastened to the top of the phantom base.

5. The CT image evaluation mold body according to claim 4, wherein the mold body base and the mold body upper cover are made of transparent acrylic materials, the mold body base is of a cylindrical structure, and purified water is contained in the mold body base.

6. The CT image evaluation mold as set forth in claim 4, wherein the detecting tools are at least provided with 6 groups, and the materials of the 6 groups of detecting tools are columnar bodies made of different materials.

7. The CT image evaluation mold of claim 6, wherein the 6 sets of detection tools are aluminum, polyvinyl chloride, polytetrafluoroethylene, polyoxymethylene resin, low density polyethylene, and hollow plastic tube, respectively.

8. The CT image evaluation mold according to claim 7, wherein the detecting tools for the hollow plastic tube material are disposed at the center of the base of the mold, the other detecting tools for the 6 sets of detecting tools are uniformly disposed inside the base of the mold, and the detecting tools are adhered to the base of the mold.

9. An electronic device, comprising:

a memory storing execution instructions; and

a processor executing the execution instructions stored in the memory, causing the processor to execute the CT image evaluation method according to any one of claims 1 to 3.

10. A readable storage medium, wherein the readable storage medium has stored therein execution instructions, which when executed by a processor, are for implementing the CT image evaluation method according to any one of claims 1 to 3.