Application system for subdural hematoma volume calculation

[0020] Example 1:

[0021] Such as Figure 1 to Figure 3 Shown: An application system for subdural hematoma volume calculation, including an information measurement input module, a hematoma volume calculation module, and a hematoma volume output module. The information measurement input module is used to complete the measurement of related parameters and integrate it Input to the hematoma volume calculation module, the hematoma volume calculation module is used to complete the hematoma volume calculation, and the hematoma volume output module outputs the hematoma volume. The described hematoma volume calculation module can be composed of a computer and VB software. Its control method is based on the polygon formula method to write a VB program. By drawing points on the CT image, each layer of CT is approximated as a polygon, and then the written program is used to calculate each The area of ​​the slice CT image is calculated by multiplying the area by the thickness and the CT image ratio to calculate the volume of each slice. The formula used in this method:

[0022] Calculation formula of CT image area of ​​each layer:

[0023] Hematoma volume calculation formula:

[0024] Where c is the number of layers and h is the layer spacing.

[0025] Use VB to write the program. When the operator clicks on the key points on each CT scan image, the program will record the coordinates of a series of key points in sequence, and automatically connect the last key point and the first key point with a straight line. Reflected in the program as (x k+1 , Y k+1 )=(x 1 , Y 1 ), these coordinates provide raw data for measuring the volume, and the specific implementation is as follows:

[0026] 1. Establish a coordinate system in the VB interface: establish a program through the coordinate system to define the coordinate accuracy and size of the coordinate system;

[0027] 2. In the VB interface, double-click the add button and display box command, add the following buttons and displays on the interface in turn, and then set the control program of each button:

[0028] (1) The "Import Picture" button corresponds to the "Program for Writing Related Picture Information". When you click this button, you can select the picture that needs to be imported;

[0029] (2) "Current coordinate value" corresponds to "Display the coordinates of the point clicked by the mouse". When you click a point in the interface with the left mouse button, the "Current coordinate value" window will display the values ​​of x and y, and Assign the values ​​of x and y to the formula S j = 1 2 X i = 1 n ( x i y i + 1 - x i + 1 y i ) X in i , Y i;

[0030] (3) "Area" button corresponds to "Area solving formula ", when you stop clicking on the point in the CT image on the interface, click the "Area" button to get the area of ​​the shadow on the CT image, and assign this value to the volume solving formula S in j;

[0031] (4) The "Layer Spacing" window corresponds to the "Parameter Assignment Procedure". When entering the value, you can give the formula V = k · h · X j = 1 c S j H assignment in;

[0032] (5) The "input ratio" window corresponds to the "parameter assignment procedure", when a certain value is input, this value is assigned to the volume formula V = k · h · X j = 1 c S j K in

[0033] (6) The "Volume" button corresponds to the "Volume Solving Formula", click the "Volume" button to get the hematoma volume value;

[0034] (7) The "Clear" button corresponds to the "Clear instruction in the program". Click this button to clear the information in the above window.

[0035] The operating steps of the hematoma volume calculation system are as follows:

[0036] (1) Import CT images;

[0037] (2) To set the parameters, enter the ratio k and the layer spacing h. The ratio and layer spacing are all known and determined values. The parameters can be determined according to the settings of the CT machine itself;

[0038] (3) Click the key points in sequence on the hematoma section;

[0039] (4) Click the "Area" button in the VB interface to output the area;

[0040] (5) Follow steps (1)-(4) to process all CT images in sequence

[0041] (6) Click the "Volume" button in the VB interface to get the hematoma volume.