X-ray image depth detection method

Abstract

The invention relates to the technical field of X-ray photography imaging, in particular to an X-ray image depth detection method. According to the technical scheme, firstly, X-ray imaging is carried out on an object to be detected to obtain an X-ray plane image of the object to be detected, then a central point of a region of interest is selected in the X-ray plane image, ultrasonic detection is carried out near the position over the central point through an ultrasonic probe until the ultrasonic probe receives strong echoes with the amplitude exceeding a set value, and then the object to be detected is detected. Calculating the distance between the position generating the strong echo and the ultrasonic probe according to the time when the strong echo is received, and finally calculating the depth of the region of interest according to the included angle between the scanning plane of the ultrasonic probe and the X-ray plane image. The method has the beneficial effects that the depth of the region of interest in the X-ray image can be quickly detected, complicated operation is not needed, meanwhile, a large amount of calculation is not needed, the depth of the region of interest in the X-ray image can be quickly positioned, and the detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of X-ray imaging technology, and in particular to a method for depth detection in X-ray images. Background Technology

[0002] X-ray imaging uses X-rays to detect the object under test, generating a projected image of the object along the X-ray irradiation direction. Therefore, depth information cannot be obtained from X-ray images; that is, only the projected position of the region of interest (ROI) can be determined, not its depth. Currently, a combination of X-ray and ultrasound detection is used to achieve three-dimensional imaging of the object under test, thus accurately determining the location of the ROI within the object. However, in practice, this method suffers from operational complexity, high computational load, and low detection efficiency. Furthermore, in practical applications, it is often not necessary to obtain an accurate three-dimensional image of the ROI within the object; only the overall shape and depth of the ROI are needed. Summary of the Invention

[0003] In view of this, the present invention provides a method for depth detection of X-ray images, which is a method for detecting the depth of the region of interest in X-ray images using ultrasound imaging. The method is simple to operate, requires little computation, and has high detection efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An X-ray image depth detection method involves first performing X-ray imaging on the object to be tested to obtain an X-ray planar image of the object; then selecting the center point of the region of interest in the X-ray planar image; and performing ultrasonic detection using an ultrasonic probe near and directly above the center point until the ultrasonic probe receives a strong echo exceeding a set amplitude. The distance between the location of the strong echo and the ultrasonic probe is calculated based on the time it takes to receive the strong echo. Finally, the depth of the region of interest is calculated based on the angle between the scanning plane of the ultrasonic probe and the X-ray planar image. When calculating the depth of the region of interest, the plane containing the X-ray image is taken as the XY plane, the center point of the selected region of interest is denoted as P(x, y), the distance between the location where the strong echo is generated and the ultrasound probe is denoted as L, the depth of the region of interest is denoted as H, and the angle between the scanning plane of the ultrasound probe and the X-ray image is denoted as θ. Then the depth of the region of interest is H = L * cosθ. When performing ultrasound testing, the ultrasound probe is oriented perpendicularly to the X-ray plane image, that is, the angle between the scanning plane of the ultrasound probe and the X-ray plane image is 90 degrees. Optionally, the formula for calculating the distance L between the location where the strong echo is generated and the ultrasonic probe is: L=c*t, where c is the speed of sound of the ultrasonic wave in the object to be measured, and t is the time interval from emitting the ultrasonic wave to receiving the strong echo.

[0005] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an X-ray image depth detection method. By using an ultrasonic probe to detect the vicinity of the region of interest in X-ray imaging, and by utilizing the characteristics of ultrasonic detection in combination with the projection characteristics of X-ray imaging, the depth of the region of interest in X-ray images can be quickly detected. This method not only eliminates the need for complex operations but also eliminates the need for a large amount of calculation, making it easy to quickly locate the depth of the region of interest in X-ray images and improving detection efficiency. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0007] Figure 1 This is a schematic diagram illustrating the detection principle of the X-ray image depth detection method in the embodiment. Detailed Implementation

[0008] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0009] This invention discloses a method for depth detection in X-ray images, referring to... Figure 1 Specifically, the process involves first performing X-ray imaging on the object to be tested to obtain an X-ray planar image of the object. Then, the center point of the region of interest is selected in the X-ray planar image, and an ultrasonic probe is used to perform ultrasonic detection near the center point until the ultrasonic probe receives a strong echo exceeding the set amplitude. The distance between the location of the strong echo and the ultrasonic probe is calculated based on the time it takes to receive the strong echo. Finally, the depth of the region of interest is calculated based on the angle between the scanning plane of the ultrasonic probe and the X-ray planar image.

[0010] Specifically, when calculating the depth of the region of interest (ROI), the plane containing the X-ray image is taken as the XY plane, the center point of the selected ROI is denoted as P(x, y), the distance between the location where the strong echo is generated and the ultrasound probe is denoted as L, the depth of the ROI is denoted as H, and the angle between the scanning plane of the ultrasound probe and the X-ray image is denoted as θ. Therefore, the depth of the ROI, H = L * cosθ. To facilitate the calculation of the depth H, during ultrasound testing, the ultrasound probe can be perpendicular to the X-ray image, i.e., the angle between the scanning plane of the ultrasound probe and the X-ray image is 90 degrees. In this case, H = L.

[0011] Specifically, the formula for calculating the distance L between the location where a strong echo is generated and the ultrasonic probe is: L = c * t, where c is the speed of sound of the ultrasonic wave in the object being measured, and t is the time interval from emitting the ultrasonic wave to receiving the strong echo.

[0012] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0013] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of depth probing of an X-ray image, characterized by: First, the object to be measured is subjected to X-ray imaging to obtain an X-ray planar image of the object to be measured, then a center point of a region of interest is selected in the X-ray planar image, and ultrasonic detection is performed near the center point directly above the ultrasonic probe until the ultrasonic probe receives a strong echo exceeding a set amplitude, the distance between the position of the strong echo and the ultrasonic probe is calculated according to the time of receiving the strong echo, and finally the depth of the region of interest is calculated according to the angle between the scanning plane of the ultrasonic probe and the X-ray planar image; When calculating the depth of the region of interest, the plane in which the X-ray planar image is located is taken as the X-Y plane, the center point of the selected region of interest is denoted as P(x, y), the distance between the position of the strong echo and the ultrasonic probe is denoted as L, the depth of the region of interest is denoted as H, and the angle between the scanning plane of the ultrasonic probe and the X-ray planar image is denoted as θ, then the depth H of the region of interest is L*cosθ. When performing ultrasonic detection, the ultrasonic probe is vertically directed toward the X-ray planar image, that is, the angle between the scanning plane of the ultrasonic probe and the X-ray planar image is 90 degrees.

2. The method of claim 1, wherein: The calculation formula of the distance L between the position of the strong echo and the ultrasonic probe is L=c*t, wherein c is the sound speed of the ultrasonic wave in the object to be measured, and t is the time interval from emitting the ultrasonic wave to receiving the strong echo.

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