X-ray imaging system

Abstract

The utility model relates to an X-ray imaging system, which comprises an X-ray source used for emitting a conical X-ray beam; the projection element is located on the light emitting side of the X light source and comprises a first panel and a second panel which are oppositely arranged, the first panel is provided with a first blocking part, the second panel is provided with a second blocking part, and the first blocking part and the second blocking part are used for blocking part of X rays in the conical X light beam; the patterns of the first blocking part and the second blocking part are different; the imaging element is located on the side, away from the X light source, of the projection element in the light beam transmission direction, the imaging element is used for conducting projection imaging on the first blocking part and the second blocking part to obtain a target image, and the target image is used for distinguishing the emitting direction when the X light source emits the conical X light beam. According to the embodiment of the invention, the emergent direction of the X light source can be distinguished from the target image, so that an operator does not need to record the emergent direction of the X light source on site, and the problems of missed recording or wrong recording and the like are avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of medical imaging technologies, and particularly to an X-ray imaging system. Background Art

[0002] With the development of medical technologies and X-ray imaging technologies, X-ray imaging systems are widely used in fields such as intraoperative X-ray imaging and surgical robots.

[0003] When performing X-ray imaging, the emission direction of the X-ray source is of great significance for image registration. When using a traditional X-ray imaging system for imaging, it is often necessary for an operator to record the emission direction of the X-ray source on site. However, this method is prone to problems such as omission or misrecording. Utility Model Content

[0004] To solve the above technical problems, the present disclosure provides an X-ray imaging system.

[0005] In a first aspect, the present disclosure provides an X-ray imaging system, which includes:

[0006] An X-ray source for emitting a conical X-ray beam;

[0007] A projection element located on the light-emitting side of the X-ray source. The projection element includes a first panel and a second panel arranged oppositely. A first blocking portion is provided on the first panel, and a second blocking portion is provided on the second panel. The first blocking portion and the second blocking portion are used to block some X-rays in the conical X-ray beam, and the patterns of the first blocking portion and the second blocking portion are different;

[0008] An imaging element. Along the light beam transmission direction, the imaging element is located on the side of the projection element away from the X-ray source. The imaging element is used to project and image the first blocking portion and the second blocking portion to obtain a target image, where the target image is used to distinguish the emission direction when the X-ray source emits the conical X-ray beam.

[0009] Optionally, the pattern of the first blocking portion includes a plurality of first figures, and the pattern of the second blocking portion includes a plurality of second figures, where the first figures and the second figures are different.

[0010] Optionally, the plurality of center points of the plurality of first figures are sequentially connected in a clockwise direction to obtain a first polygon, and the plurality of center points of the plurality of second figures are sequentially connected in a clockwise direction to obtain a second polygon.

[0011] Optionally, both the first polygon and the second polygon are regular polygons.

[0012] Optionally, both the first polygon and the second polygon are squares.

[0013] Optionally, the center of the first polygon coincides with the center of the second polygon, and the difference between the side length of the first polygon and the side length of the second polygon is greater than or equal to a first preset threshold.

[0014] Optionally, the first graphic is a square and the second graphic is a circle.

[0015] Optionally, along the direction from the first panel to the second panel, the distance between the first panel and the second panel is greater than or equal to a second preset threshold.

[0016] Optionally, a first hollow pattern is provided on the first panel, and the first metal part is embedded in the first hollow pattern to form a first blocking part;

[0017] A second hollow pattern is arranged on the second panel, and the second metal part is embedded in the second hollow pattern to form a second blocking part.

[0018] Optionally, the projection element also includes a third panel, a fourth panel, a fifth panel and a pillar, the third panel and the fourth panel are arranged opposite to each other, the third panel and the fourth panel are used to connect the first panel and the second panel, the fifth panel is used to connect the first panel, the second panel, the third panel and the fourth panel, and the pillar is connected to the fifth panel.

[0019] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0020] The X-ray imaging system of the disclosed embodiment includes: an X-ray light source for emitting a conical X-ray beam; a projection element located at the light emitting side of the X-ray light source, the projection element including a first panel and a second panel arranged opposite to each other, the first panel being provided with a first blocking portion, the second panel being provided with a second blocking portion, the first blocking portion and the second blocking portion being used to block part of the X-rays in the conical X-ray beam, and the patterns of the first blocking portion and the second blocking portion are different; an imaging element, the imaging element being located at a side of the projection element away from the X-ray light source along the light beam transmission direction, the imaging element being used to project and image the first blocking portion and the second blocking portion to obtain a target image, wherein the target image is used to distinguish the emission direction when the X-ray light source emits the conical X-ray beam. It can be seen that since the X-ray imaging system provided by the embodiment of the present disclosure is provided with a projection element, when the X-ray imaging system is used for imaging, the first blocking portion and the second blocking portion on the projection element can be projected into the target image. In this way, the emission direction of the X-ray light source can be distinguished according to the projection patterns of the first blocking portion and the second blocking portion in the target image, that is, the emission direction of the X-ray light source can be distinguished from the target image alone. In this way, there is no need for the operator to record the emission direction of the X-ray light source on site, thereby avoiding problems such as omissions or errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic structural diagram of an X-ray imaging system provided by an embodiment of the present disclosure;

[0022] Figure 2 It is a front view of a projection element provided by an embodiment of the present disclosure;

[0023] Figure 3 It is a rear view of a projection element provided by an embodiment of the present disclosure;

[0024] Figure 4 It is a top view of a projection element provided by an embodiment of the present disclosure;

[0025] Figure 5 It is a schematic diagram of the projection magnification principle of a first blocking portion and a second blocking portion provided by an embodiment of the present disclosure;

[0026] Figure 6 It is a schematic diagram of a target image provided by an embodiment of the present disclosure. Detailed implementation manners

[0027] In order to be able to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.

[0029] The applicant has found through research that when imaging with a traditional X-ray imaging system, it is often necessary for an operator to record the emission direction of the X-ray source on site. However, this method is prone to problems such as missing records or incorrect records. If a complex mechanical positioning system is used to obtain the emission direction of the X-ray source, the operation is relatively cumbersome and the efficiency is low. Considering that projection imaging has the characteristic of "near is large and far is small", that is, the closer the object to be projected is to the light source, the greater the magnification during imaging, and the farther the object to be projected is from the light source, the smaller the magnification during imaging. An embodiment of the present disclosure provides a new X-ray imaging system. When imaging with this X-ray imaging system, the emission direction of the X-ray source can be distinguished only from the obtained target image. In this way, there is no need for an operator to record the emission direction of the X-ray source on site, thereby avoiding problems such as missing records or incorrect records. Below, the X-ray imaging system provided by the embodiment of the present disclosure will be described in detail.

[0030] Figure 1 It is a schematic structural diagram of an X-ray imaging system provided by an embodiment of the present disclosure. Refer to Figure 1 , the X-ray imaging system includes: an X-ray source 10 for emitting a conical X-ray beam;

[0031] The projection element 20 is located on the light-emitting side of the X-ray source 10. The projection element 20 includes a first panel 21 and a second panel 22 which are oppositely arranged. A first blocking portion is provided on the first panel 21, and a second blocking portion is provided on the second panel 22. The first blocking portion and the second blocking portion are used to block some of the X-rays in the conical X-ray beam, and the patterns of the first blocking portion and the second blocking portion are different;

[0032] The imaging element 30 is located on the side of the projection element 20 away from the X-ray source 10 along the light beam transmission direction. The imaging element 30 is used to project an image of the first blocking portion and the second blocking portion to obtain a target image. The target image is used to distinguish the emission direction when the X-ray source 10 emits a conical X-ray beam.

[0033] Specifically, the X-ray source 10 can be any light source capable of emitting a conical X-ray beam. For example, the X-ray source 10 can include an X-ray tube, etc., but is not limited thereto.

[0034] Specifically, the projection element 20 includes a first panel 21 and a second panel 22. The first panel 21 and the second panel 22 are parallel to each other or approximately parallel to each other. The first panel 21 includes a first blocking portion and a first non-blocking portion (i.e., the area of the first panel 21 other than the first blocking portion). The first blocking portion can block X-rays (or the penetrability of X-rays at the first blocking portion is less than a preset threshold), and the first non-blocking portion does not block X-rays (or the penetrability of X-rays at the first blocking portion is greater than or equal to the preset threshold). The second panel 22 includes a second blocking portion and a second non-blocking portion (i.e., the area of the second panel 22 other than the second blocking portion). The second blocking portion can block X-rays, and the second non-blocking portion does not block X-rays.

[0035] Exemplarily, the density of the first blocking portion and the second blocking portion can be greater than or equal to 4 g / cm 3 to block X-rays; the density of the first non-blocking portion and the second non-blocking portion can be less than or equal to 1.8 g / cm 3 and greater than or equal to 1.5 g / cm 3 to transmit X-rays, but is not limited thereto.

[0036] Specifically, the patterns of the first blocking portion and the second blocking portion are different, which can be specifically manifested in different scales and layouts of the patterns. For example, the size, distribution density, and overall layout (such as symmetry, asymmetry, repetition interval, etc.) of the elements in the pattern are different, but are not limited thereto.

[0037] Specifically, there are various patterns of the first blocking portion and the second blocking portion. The following are typical examples for illustration, but do not constitute a limitation to the present disclosure.

[0038] In some embodiments, optionally, the pattern of the first blocking portion includes a plurality of first figures, and the pattern of the second blocking portion includes a plurality of second figures, wherein the first figures and the second figures are different.

[0039] Exemplarily, Figure 2 is a front view of a projection element provided by an embodiment of the present disclosure. Figure 3 is a rear view of a projection element provided by an embodiment of the present disclosure. Refer to Figure 2 and Figure 3 , the pattern of the first blocking portion includes 4 first figures 211, and the second blocking portion includes 4 second figures 221.

[0040] It can be understood that by setting the pattern of the first blocking portion to include a plurality of first figures 211 and the pattern of the second blocking portion to include a plurality of second figures 221, the pattern settings of the first blocking portion and the second blocking portion are made more flexible. Furthermore, it is beneficial that in the direction from the first panel 21 to the second panel 22, the patterns of the first blocking portion and the second blocking portion do not overlap. As a result, when the first blocking portion and the second blocking portion are projected and imaged on the imaging element 30, the corresponding projection patterns of the two are not likely to overlap, making it easier to distinguish the projection pattern of the first blocking portion and the projection pattern of the second blocking portion. Moreover, by setting the first figures 211 and the second figures 221 to be different, it further makes it easier to distinguish the projection pattern of the first blocking portion and the projection pattern of the second blocking portion.

[0041] Specifically, those skilled in the art can set the specific quantity, arrangement, and figure shape of the first figures 211 and the second figures 221 according to the actual situation, and no limitation is imposed here.

[0042] Regarding the specific quantity of the first figures 211 and the second figures 221: In one example, the quantity of the first figures 211 is one, two, three, or four (as shown in Figure 2 ), etc., and the quantity of the second figures 221 is one, two, three, or four (as shown in Figure 3 ), etc. However, it is not limited thereto.

[0043] Regarding the specific arrangement of the first figures 211 and the second figures 221: In one example, optionally, the multiple center points of the multiple first figures 211 are sequentially connected in a clockwise direction to obtain a first polygon 212, and the multiple center points of the multiple second figures 221 are sequentially connected in a clockwise direction to obtain a second polygon 222.

[0044] Specifically, the first polygon 212 and the second polygon 222 can be regular figures or irregular figures, and the present disclosure does not impose any limitation thereon.

[0045] It can be understood that by connecting the centers of multiple first figures 211 in sequence in the clockwise direction to obtain a first polygon 212, such that the projection pattern of the first blocking portion in the target image includes multiple first projection figures (i.e., the figures obtained by projecting and imaging the first figures 211), and the centers of the multiple first projection figures are connected in sequence in the clockwise direction to obtain a first projection polygon. In this way, the magnification factor of the first blocking portion during projection imaging can be characterized by the following method: the area of the first projection polygon divided by the area of the first polygon 212, which is convenient for subsequent calculation of the magnification factor of the first blocking portion during projection imaging. The same applies to the second blocking portion and will not be elaborated here.

[0046] Optionally, both the first polygon 212 and the second polygon 222 are regular polygons. Further optionally, both the first polygon 212 and the second polygon 222 are squares. In this way, it is convenient for subsequent calculation of the areas of the first polygon 212 and the second polygon 222, and further convenient for calculation of the magnification factors of the first blocking portion and the second blocking portion during projection imaging.

[0047] Optionally, the side length of the first polygon 212 coincides with the center of the second polygon 222, and the difference between the side length of the first polygon 212 and the side length of the second polygon 222 is greater than or equal to a first preset threshold.

[0048] Specifically, those skilled in the art can set the specific value of the first preset threshold according to the actual situation, and it is not limited here. For example, the first preset threshold is greater than or equal to 20 millimeters, but it is not limited to this.

[0049] In this way, along the direction from the first panel 21 to the second panel 22, the patterns of the first blocking portion and the second blocking portion do not overlap. Furthermore, when the first blocking portion and the second blocking portion are projected and imaged on the imaging element 30, the corresponding projection patterns of the two are not likely to overlap, and thus it is easier to distinguish the projection pattern of the first blocking portion and the projection pattern of the second blocking portion.

[0050] Regarding the specific shapes of the first figure 211 and the second figure 221: In one example, the first figure 211 and the second figure 221 can be regular figures. Optionally, the first figure 211 is a square and the second figure 221 is a circle. In this way, it is convenient to determine the centers of the first figure 211 and the second figure 221, and since the first figure 211 and the second figure 221 are regular figures, the manufacturing difficulty and cost of the first blocking portion and the second blocking portion can be reduced. Of course, in another example, the first figure 211 and the second figure 221 can also be irregular figures. Of course, in yet another example, one of the first figure 211 and the second figure 221 is a regular figure and the other is an irregular figure. But it is not limited to this.

[0051] Optionally, along the direction from the first panel 21 towards the second panel 22, the distance between the first panel 21 and the second panel 22 is greater than or equal to a second preset threshold. In this way, the difference in the distances between the first blocking portion and the X-ray source and between the second blocking portion and the X-ray source can be made larger, so that the magnification differences of the first blocking portion and the second blocking portion during projection imaging are larger, facilitating more accurate discrimination of the emission direction when the X-ray source emits a conical X-ray beam.

[0052] Specifically, those skilled in the art can set the specific value of the second preset threshold according to the actual situation, which is not limited here. For example, the second preset threshold is greater than or equal to 80 mm, but is not limited thereto.

[0053] Optionally, a first hollow pattern is provided on the first panel 21, and the first metal part is embedded in the first hollow pattern to form a first blocking portion; a second hollow pattern is provided on the second panel 22, and the second metal part is embedded in the second hollow pattern to form a second blocking portion. In this way, the manufacturing method of the projection element 20 can be simple, which is beneficial to reducing the manufacturing difficulty and cost.

[0054] Optionally, the projection element 20 further includes a third panel, a fourth panel, a fifth panel, and a support column. The third panel and the fourth panel are arranged opposite to each other, and the third panel and the fourth panel are used to connect the first panel 21 and the second panel 22. The fifth panel is used to connect the first panel 21, the second panel 22, the third panel, and the fourth panel. The support column is connected to the fifth panel. In this way, the structure of the projection element 20 can be more stable.

[0055] Exemplarily, Figure 4 is a top view of a projection element provided by an embodiment of the present disclosure. Refer to Figures 2 - 4 , the projection element 20 includes a first panel 21, a second panel 22, a third panel, a fourth panel, a fifth panel, and a support column. A first hollow pattern (i.e., 4 hollow squares) is provided on the first panel 21, and the first metal part is embedded in the first hollow pattern to form a first blocking portion (i.e., 4 metal squares); a second hollow pattern (i.e., 4 hollow circles) is provided on the second panel 22, and the second metal part is embedded in the second hollow pattern to form a second blocking portion (i.e., 4 metal circles). The 4 center points of the 4 metal squares are sequentially connected in the clockwise direction to obtain a first polygon 212 in the shape of a square, and the 4 center points of the 4 metal circles are sequentially connected in the clockwise direction to obtain a second polygon 222 in the shape of a square. The center points of the first polygon 212 and the second polygon 222 coincide. The side length of the first polygon 212 is 40 mm, and the side length of the second polygon 222 is 20 mm. Along the direction from the first panel 21 towards the second panel 22, the distance between the first panel 21 and the second panel 22 is 80 mm.

[0056] Of course, in some other embodiments, the pattern of the first blocking portion may include a first character (such as a number or a letter), and the pattern of the second blocking portion may include a second character (such as a number or a letter), where the first character and the second character are different.

[0057] It should be noted that Figure 1 only exemplarily shows that the first panel 21 is close to the light source and the second panel 22 is close to the imaging element 30, but it is not limited thereto. It is also possible that the first panel 21 is close to the imaging element 30 and the second panel 22 is close to the light source.

[0058] Specifically, the imaging surface of the imaging element 30 is parallel to the first panel 21 and the second panel 22. The principle of the projection element 20 projecting on the imaging element 30 is as follows: When the conical X-ray beam encounters the projection element 20 in the propagation path, part of the X-rays are blocked by the first blocking portion and the second blocking portion and cannot continue to propagate in a straight line, thereby forming a corresponding projection pattern on the imaging surface of the imaging element 30.

[0059] Figure 5 is a schematic diagram of the principle of projection magnification of a first blocking portion and a second blocking portion provided by an embodiment of the present disclosure. Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 Let the distance between the plane S0 where the first panel 21 is located and the X light source 10 be denoted as the first distance, and the distance between the plane S1 where the second panel 22 is located and the X light source 10 be denoted as the second distance. The plane where the imaging surface of the imaging element 30 is located is S3. Since the first distance and the second distance are different, when projecting and imaging on the imaging surface, the magnification multiples of the first blocking portion and the second blocking portion are different. Therefore, according to the target image obtained by projection imaging, it can be distinguished whether the X light source 10 is closer to the first panel 21 or closer to the second panel 22. If the X light source 10 is closer to the first panel 21, the emission direction of the X light source can be distinguished as the direction from the first panel 21 to the second panel 22. If the X light source 10 is closer to the second panel 22, the emission direction of the X light source can be distinguished as the direction from the second panel 22 to the first panel 21.

[0060] Exemplarily, Figure 6 is a schematic diagram of a target image provided by an embodiment of the present disclosure. Refer to Figures 2 - 4 and Figure 6, the target image includes the projection patterns of 4 metal squares of the first blocking portion (i.e., 4 projection squares) and the projection patterns of 4 circles of the second blocking portion (i.e., 4 projection circles). According to the target image, it is possible to distinguish which of the magnification of the first blocking portion and the magnification of the second blocking portion is larger, and further distinguish whether the X-ray source 10 is closer to the first panel 21 or the second panel 22, so as to distinguish the emission direction of the X-ray source.

[0061] In the embodiment of the present disclosure, a projection element 20 is provided in the X-ray imaging system during imaging. Therefore, when using this X-ray imaging system for imaging, the first blocking portion and the second blocking portion on the projection element 20 can be projected and imaged in the target image. In this way, the emission direction of the X-ray source 10 can be distinguished according to the projection patterns of the first blocking portion and the second blocking portion in the target image, that is, the emission direction of the X-ray source 10 can be distinguished only from the target image. In this way, it is not necessary for the operator to record the emission direction of the X-ray source 10 on site, thus avoiding problems such as omission or misrecording.

[0062] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. An X-ray imaging system, characterized in that: include: An X-ray source, used for emitting a cone-shaped X-ray beam; A projection element is located at the light exit side of the X-ray source, the projection element comprises a first panel and a second panel which are arranged opposite to each other, the first panel is provided with a first blocking portion, the second panel is provided with a second blocking portion, the first blocking portion and the second blocking portion are used to block part of the X-rays in the conical X-ray beam, and the patterns of the first blocking portion and the second blocking portion are different; An imaging element is located on the side of the projection element away from the X-ray source along the light beam transmission direction, and is used to project and image the first blocking portion and the second blocking portion to obtain a target image, wherein the target image is used to distinguish the emission direction of the conical X-ray beam emitted by the X-ray source.

2. The X-ray imaging system according to claim 1, characterized in that: The pattern of the first barrier portion includes a plurality of first figures, and the pattern of the second barrier portion includes a plurality of second figures, wherein the first figures and the second figures are different.

3. The X-ray imaging system according to claim 2, characterized in that: The multiple center points of the multiple first figures are connected in sequence in a clockwise direction to obtain a first polygon, and the multiple center points of the multiple second figures are connected in sequence in a clockwise direction to obtain a second polygon.

4. The X-ray imaging system according to claim 3, characterized in that: The first polygon and the second polygon are both regular polygons.

5. The X-ray imaging system according to claim 4, characterized in that: The first polygon and the second polygon are both squares.

6. The X-ray imaging system according to claim 4, characterized in that: The center of the first polygon coincides with the center of the second polygon, and the difference between the side length of the first polygon and the side length of the second polygon is greater than or equal to a first preset threshold.

7. The X-ray imaging system according to claim 2, characterized in that: The first figure is a square, and the second figure is a circle.

8. The X-ray imaging system according to claim 1, characterized in that: Along the direction from the first panel to the second panel, the distance between the first panel and the second panel is greater than or equal to a second preset threshold.

9. The X-ray imaging system according to claim 1, characterized in that: The first panel is provided with a first hollow pattern, and the first metal part is embedded in the first hollow pattern to form the first blocking part; A second hollow pattern is arranged on the second panel, and the second metal part is embedded in the second hollow pattern to form the second blocking part.

10. The X-ray imaging system according to claim 1, characterized in that: The projection element also includes a third panel, a fourth panel, a fifth panel and a pillar, the third panel and the fourth panel are arranged opposite to each other, the third panel and the fourth panel are used to connect the first panel and the second panel, the fifth panel is used to connect the first panel, the second panel, the third panel and the fourth panel, and the pillar is connected to the fifth panel.

Images