Method of replicating CT value measurements

Abstract

The invention relates to a method for copying CT (Computed Tomography) value measurement, which is characterized in that a user triggers an instruction, and coordinate transformation is carried out by combining image window width and window level information and display parameters, so that the rapid copying of a measurement result is realized, the repeated measurement operation under different window widths and window levels is avoided, and the time and energy of a doctor are saved. Meanwhile, according to the method, the function that the user selects and copies the measurement operation type is provided, the operation flexibility is improved, a doctor can selectively copy part or all of the measurement results according to needs, unnecessary redundant information is avoided, and the doctor can conveniently and rapidly obtain the needed information.

Description

Technical Field

[0001] The invention relates to the technical field of medical image processing, in particular to a method for replicating CT value measurement. Background Art

[0002] In the prior art, DICOM (Digital Imaging and Communications in Medicine) is an international standard for medical images and related information, and is widely used in radiology departments, imaging departments and other departments in hospitals. In medical imaging, the adjustment of window width and window level is to optimize the display effect of different tissue structures, so that doctors can observe the area of ​​interest or lesions more clearly. The window width defines the range of CT values ​​displayed on the image, while the window level determines the center position of the range. By adjusting the window width and window level, doctors can change the contrast and brightness of the image to highlight specific tissue structures or lesions.

[0003] At present, in the process of reading medical images, doctors often need to adjust the window width and window position of the image to highlight the details of different tissues or organs. The window width refers to the range of grayscale levels when displaying the image, and the window position refers to the level of central grayscale when displaying the image. By adjusting the window width and window position, doctors can better observe the morphology, size, density and other characteristics of the lesion, and thus make a more accurate diagnosis.

[0004] However, in current medical image reading software, when doctors perform measurements at different window widths and window positions, they often need to repeat the same operation, which is not only time-consuming and laborious, but also prone to inaccurate measurement results due to operational errors. For example, a doctor measures the size of a lung nodule under the lung window, and then needs to switch to the mediastinum window to observe the relationship between the nodule and the surrounding blood vessels. At this time, the doctor needs to find the nodule again under the mediastinum window and measure it again; some image reading software provides the function of copying all measurement results to other window widths and window positions, but it lacks flexibility. If the doctor only wants to copy part of the measurement results, he needs to manually delete the unnecessary results, which is cumbersome. Summary of the invention

[0005] In order to solve the above problem, the present invention provides a method for replicating CT value measurement, which can realize rapid replication of measurement results and avoid repeated measurement operations under different window widths and window positions.

[0006] In order to achieve the above object, the method for replicating CT value measurement designed by the present invention comprises the following steps:

[0007] S100. Displaying a first window width and window level image of a DICOM image in a first display area, and displaying a second window width and window level image of the same DICOM image in a second display area;

[0008] S200. Perform at least one measurement operation on the first window width and window level image, and obtain measurement results and measurement parameters of each measurement operation;

[0009] S300. In response to a user trigger instruction, selecting at least one predetermined measurement operation;

[0010] S400. According to the selected measurement operation, copy the corresponding measurement results and measurement parameters to the second window width and window level image;

[0011] S500. Display corresponding measurement results on the second window width and window level image according to the selected type of measurement operation and corresponding measurement parameters.

[0012] Preferably, the corresponding measurement result is displayed on the second window width and window level image, specifically including:

[0013] A. determining a corresponding position of the measurement parameter on the second window width and window level image according to the window width and window level information of the first window width and window level image and the second window width and window level image and the measurement parameter;

[0014] B. performing coordinate transformation on the corresponding position according to the display parameters of the second window width and window position image;

[0015] C. Displaying the measurement result on the second window width and window level image according to the type of the measurement operation and the corresponding position after coordinate transformation.

[0016] Preferably, the display parameters include at least one of the following: zoom ratio, translation amount, rotation angle, flip state, and display window size.

[0017] Preferably, the user-triggered instruction is at least one of the following: a preset shortcut key instruction, a preset virtual button-triggered instruction, and a preset physical button-triggered instruction.

[0018] Preferably, the user trigger instruction is triggered after the user completes at least one measurement operation, or is triggered after the user selects at least one completed measurement operation.

[0019] Preferably, copying the corresponding measurement results and measurement parameters to the second window width and window level image includes: storing the measurement results and measurement parameters in a first data structure corresponding to the measurement operation, and copying the first data structure to a second data structure corresponding to the second window width and window level image, wherein the second data structure is used to store all measurement operations on the second window width and window level image.

[0020] Preferably, the measurement operation includes at least one of the following: length measurement, angle measurement, area measurement, volume measurement, and CT value measurement.

[0021] Preferably, in step S500, a graphic mark corresponding to the measurement operation is displayed on the second window width and window level image, and the style and color of the graphic mark can be selected by the user from a preset style and color library.

[0022] The method for copying CT value measurement designed by the present invention realizes rapid copying of measurement results through user triggering instructions and combining image window width and window position information and display parameters for coordinate conversion, avoiding repeated measurement operations under different window widths and window positions, and saving doctors' time and energy. At the same time, the method provides the user with the function of selecting the type of measurement operation to copy, improving the flexibility of operation, and doctors can selectively copy part or all of the measurement results as needed, avoiding unnecessary redundant information, and facilitating doctors to quickly obtain required information. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flow chart of a method for replicating CT value measurement provided in an embodiment of the present application;

[0024] Figure 2 It is a flow chart showing the corresponding measurement results provided by an embodiment of the present application. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example 1.

[0027] like Figure 1 As shown, the method for replicating CT value measurement described in this embodiment includes the following steps:

[0028] S100. Display a first window width and window level image of a DICOM image in a first display area, and display a second window width and window level image of the same DICOM image in a second display area.

[0029] For example, when a doctor opens a patient's chest CT image, the software will display the lung window image on the left monitor (first display area) and the mediastinum window image of the same level on the right monitor (second display area) to facilitate comparative observation by the doctor.

[0030] S200. Perform at least one measurement operation on the first window width and window level image, and obtain a measurement result and measurement parameters of each measurement operation.

[0031] In this embodiment, the measurement operation includes at least one of the following: length measurement, angle measurement, area measurement, volume measurement, and CT value measurement.

[0032] Specifically, when reading a film, the doctor finds a nodule shadow on the first display area and uses the measurement tools on the PC to measure it. For example, the doctor can use the length measurement tool to measure the long and short diameters of the nodule, use the area measurement tool to measure the area of ​​the nodule, and use the CT value measurement tool to measure the CT value of the nodule. The software automatically records the measurement results and parameters of each measurement operation, such as length value, area value, CT value, measurement point coordinates, etc.

[0033] S300. In response to a user trigger instruction, at least one predetermined measurement operation is selected.

[0034] Specifically, after the doctor completes the measurement in the first display area, if he wishes to copy part of the measurement results to the right display (mediastinum window image) for comparative analysis, this can be achieved by triggering a specific instruction.

[0035] Optionally, the user-triggered instruction is at least one of the following:

[0036] For preset shortcut key commands, doctors can press the preset shortcut key combination connected to the PC keyboard, such as "Ctrl+C".

[0037] An instruction triggered by a preset virtual button, for example, clicking the "Copy Measurement Result" virtual button on the measurement tool software interface.

[0038] A command triggered by a preset physical button, such as a one-key macro button, to trigger the copy operation.

[0039] After the command is triggered, the measurement tool software will pop up a list of measurement results, allowing the doctor to check the measurement operations that need to be copied. For example, the doctor can choose to copy only the length and area measurement results without copying the CT value.

[0040] S400. According to the selected measurement operation, copy the corresponding measurement result and measurement parameter to the second window width and window level image.

[0041] Specifically, the measurement tool software accurately copies the selected measurement results and parameters, such as length value, area value and corresponding measurement point coordinates, to the mediastinal window image displayed in the second display area according to the doctor's selection.

[0042] S500. Display corresponding measurement results on the second window width and window level image according to the selected type of measurement operation and corresponding measurement parameters.

[0043] Alternatively, if Figure 2As shown, the corresponding measurement results are displayed on the second window width and window level image, specifically including:

[0044] A. Determine a corresponding position of the measurement parameter on the second window width and window level image according to the window width and window level information of the first window width and window level image and the second window width and window level image and the measurement parameter.

[0045] Specifically, the measurement tool software first calculates the initial corresponding position of the selected measurement operation on the second window width and window position image (mediastinum window image) based on the window width and window position information of the two images and the measurement parameters, such as the measurement point coordinates. This ensures that the measurement results can be mapped to the correct anatomical position and avoids display deviations caused by differences in window width and window position.

[0046] B. Performing coordinate transformation on the corresponding position according to the display parameters of the second window width and window position image.

[0047] In this embodiment, the display parameter includes at least one of the following: zoom ratio, translation amount, rotation angle, flip state, and display window size.

[0048] Specifically, the actual second window width and window position image may have been scaled, translated, and the like. The measurement tool will perform coordinate transformation on the initial corresponding position according to the display parameters of the image (e.g., scaling ratio, translation amount) to obtain the final display position. This ensures that the measurement result can still be accurately displayed on the image whose display state has been adjusted by the user.

[0049] C. Displaying the measurement result on the second window width and window level image according to the type of the measurement operation and the corresponding position after coordinate transformation.

[0050] Finally, the measurement tool software draws corresponding graphic marks, such as length lines, area regions, etc., on the second window width and window position image according to the type of measurement operation (such as length, area) and the final corresponding position, and displays the corresponding measurement result values. In this way, the copied measurement results can be presented to the doctor in a clear and intuitive manner, which is convenient for the doctor to conduct comparative analysis.

[0051] In some embodiments, the user trigger instruction is triggered after the user completes at least one measurement operation, or after the user selects at least one completed measurement operation. In this way, different triggers can be copied uniformly after all measurements are completed, and measurement results can also be copied one by one, providing greater flexibility.

[0052] In some embodiments, copying the corresponding measurement results and measurement parameters to the second window width and window level image includes: storing the measurement results and measurement parameters in a first data structure corresponding to the measurement operation, and copying the first data structure to a second data structure corresponding to the second window width and window level image, wherein the second data structure is used to store all measurement operations on the second window width and window level image. In this way, the measurement data of different window width and window level images are stored in corresponding independent data structures, making the data organization more modular and convenient for management and maintenance. When copying, only the data structure itself needs to be copied, without copying the measurement results and parameters one by one, which reduces data redundancy and improves storage efficiency. In addition, since each data structure contains complete measurement information, the copy operation can ensure data consistency and avoid the risk of data loss or confusion.

[0053] In some embodiments, in step S500, a graphic mark corresponding to the measurement operation is displayed on the second window width and window level image, and the style and color of the graphic mark can be selected by the user from a preset style and color library.

[0054] In this way, graphic marks can intuitively display the position, direction and range of the measurement operation, such as using lines to represent length, using regions to represent area, etc., which makes it convenient for doctors to quickly understand the meaning of the measurement results. At the same time, they can also choose different graphic styles according to their preferences or habits, such as line thickness, color, virtuality and reality, etc., so that the display effect is more in line with personal needs, so as to improve diagnostic efficiency.

[0055] The method for copying CT value measurement provided in this embodiment realizes rapid copying of measurement results through user-triggered instructions and coordinate conversion in combination with image window width and window position information and display parameters, avoiding repeated measurement operations under different window widths and window positions, and saving doctors' time and energy. At the same time, the method provides the user with a function to select the type of measurement operation to copy, thereby improving the flexibility of operation. Doctors can selectively copy part or all of the measurement results as needed, avoiding unnecessary redundant information, and facilitating doctors to quickly obtain required information.

[0056] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for replicating CT value measurement, characterized in that: The following steps are involved: S100. Displaying a first window width and window level image of a DICOM image in a first display area, and displaying a second window width and window level image of the same DICOM image in a second display area; S200. Perform at least one measurement operation on the first window width and window level image, and obtain measurement results and measurement parameters of each measurement operation; S300. In response to a user trigger instruction, selecting at least one predetermined measurement operation; S400. According to the selected measurement operation, copy the corresponding measurement results and measurement parameters to the second window width and window level image; S500. Display corresponding measurement results on the second window width and window level image according to the selected type of measurement operation and corresponding measurement parameters.

2. The method for replicating CT value measurement according to claim 1, characterized in that: The corresponding measurement results are displayed on the second window width and window level image, specifically including: A. determining a corresponding position of the measurement parameter on the second window width and window level image according to the window width and window level information of the first window width and window level image and the second window width and window level image and the measurement parameter; B. performing coordinate transformation on the corresponding position according to the display parameters of the second window width and window position image; C. Displaying the measurement result on the second window width and window level image according to the type of the measurement operation and the corresponding position after coordinate transformation.

3. The method for replicating CT value measurement according to claim 2, characterized in that: The display parameters include at least one of the following: zoom ratio, translation amount, rotation angle, flip state, and display window size.

4. The method for replicating CT value measurement according to claim 1, characterized in that: The user-triggered instruction is at least one of the following: a preset shortcut key instruction, a preset virtual button-triggered instruction, and a preset physical button-triggered instruction.

5. The method for replicating CT value measurement according to claim 4, characterized in that: The user trigger instruction is triggered after the user completes at least one measurement operation, or is triggered after the user selects at least one completed measurement operation.

6. The method for replicating CT value measurement according to claim 1, 4 or 5, characterized in that: Copying the corresponding measurement results and measurement parameters to the second window width and window level image includes: storing the measurement results and measurement parameters in a first data structure corresponding to the measurement operation, and copying the first data structure to a second data structure corresponding to the second window width and window level image, wherein the second data structure is used to store all measurement operations on the second window width and window level image.

7. The method for replicating CT value measurement according to claim 1, characterized in that: The measurement operation includes at least one of the following: length measurement, angle measurement, area measurement, volume measurement, and CT value measurement.

8. The method for replicating CT value measurement according to claim 1, characterized in that: In step S500, a graphic mark corresponding to the measurement operation is displayed on the second window width and window level image, and the style and color of the graphic mark can be selected by the user from a preset style and color library.

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