CN104840213B - Image acquisition device for CT machine and corresponding CT machine - Google Patents

Abstract

The invention relates to an image acquisition device for a CT machine and the corresponding CT machine. The device includes: an X-ray detection module; a data acquisition module; the bearing piece is used for bearing the X-ray detection module and the data acquisition module; wherein the X-ray detection module and the data acquisition module are respectively and independently connected to the bearing member.

Description

Image acquisition device for CT machine and corresponding CT machine

Technical Field

The present invention relates to an image capturing device, and more particularly to an image capturing device for a CT machine and a CT machine.

Background

The image acquisition device of the CT machine mainly comprises an X-ray detector module (detector assembly) and a Data acquisition module (Data acquisition System), wherein the two modules are positioned in a rack (Gantry) of the CT machine, and can rotate randomly in the using process of the CT machine. In addition, the image acquisition device may further include a balancing module, a power module, and other modules that rotate along with the gantry.

In the existing CT machine, the X-ray detector module and the data acquisition module are generally integrated into one assembly, and even the related modules such as the balance module and the power supply module are integrated into the assembly. This makes the assembly heavy, which causes severe deformation of the X-ray detector module during rotation, thereby affecting the quality of the CT image.

Therefore, it is desirable to provide an image acquisition device for a CT machine and a corresponding CT machine, which can reduce the deformation of an X-ray detector module during the rotation process and improve the quality of CT images.

Disclosure of Invention

An embodiment of the present invention provides an image capturing device for a CT machine, including: an X-ray detection module; a data acquisition module; the bearing piece is used for bearing the X-ray detection module and the data acquisition module; wherein the X-ray detection module and the data acquisition module are respectively and independently connected to the bearing member.

Another embodiment of the present invention provides a CT machine including the image acquisition apparatus according to the present invention.

Drawings

The invention may be better understood by describing embodiments of the invention in conjunction with the following drawings, in which:

FIG. 1 is a schematic structural diagram of an embodiment of an image capturing device for a CT machine according to the present invention;

FIG. 2 is a schematic structural diagram of one embodiment of an X-ray detector module of the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of a data acquisition module according to the present invention;

FIG. 4 is a schematic view of one embodiment of the present invention with an X-ray detector module, a data acquisition module, and a carrier connected thereto;

FIG. 5 is a schematic diagram of a fail-safe module in an image capturing apparatus according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating a balancing module in an image capturing device according to an embodiment of the present invention.

Detailed Description

While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions are made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be further appreciated that such a development effort might be complex and tedious, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as a complete understanding of this disclosure.

Unless otherwise defined, technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "a" or "an," and the like, do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalent, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, nor are they restricted to direct or indirect connections.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an image capturingdevice 100 for a CT machine according to an embodiment of the present invention. The image capturingdevice 100 may include anX-ray detection module 101, adata acquisition module 102, and acarrier 103 for carrying the X-ray detection module and the data acquisition module. TheX-ray detection module 101 and thedata acquisition module 102 are each independently connected to thecarrier 103.

In one embodiment of the present invention, theX-ray detection module 101 and thedata acquisition module 102 may be directly and fixedly mounted on thecarrier 103, respectively, and by designing theX-ray detection module 101 and thedata acquisition module 102 into appropriate shapes, theX-ray detection module 101 and thedata acquisition module 102 are free from any contact or connection with each other except for the wires for data transmission after being mounted on thecarrier 103. In one embodiment of the present invention, the components connected to thecarrier 103 in theX-ray detection module 101 and the components connected to the carrier in thedata acquisition module 102 may be disposed to intersect each other with a gap therebetween. In this way, it is ensured that both theX-ray detection module 101 and thedata acquisition module 102 are connected to thecarrier 103, respectively, and rotate with thecarrier 103, and that during rotation, theX-ray detection module 101 is deformed only by its own weight and not by the weight of thedata acquisition module 102.

In one embodiment of the present invention, theX-ray detection module 101 may include anX-ray detector 1011 and atray 1012 for supporting the X-ray detector, theX-ray detector 1011 being fixed to thetray 1012, and thetray 1012 being connectable to thecarrier 103 by a connecting member thereon.

In one embodiment of the present invention, theimage capturing apparatus 100 may further include abalancing module 105, apower module 106, and aframe 107 for connecting thedata acquiring module 102, thepower module 106, and thebalancing module 105, wherein theframe 107 may be connected to thecarrier 103 through a component connected to thecarrier 103.

In an embodiment of the present invention, theimage capturing apparatus 100 may further include a fail-safe module 104 for preventing the displacement from further increasing when theX-ray detection module 101 or thedata acquisition module 102 is displaced relative to thecarrier 103 during the rotation.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of anX-ray detector module 101 of the present invention.

TheX-ray detector 1011 is fixed to atray 1012, thetray 1012 can be connected to the carrier 103 (not shown) by aconnector 203 in the form of a protrusion thereon, and therecess 204 on thetray 1012 can be used to make room for theconnector 302 in theframe 107 of fig. 3 for connecting thecarrier 103.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of thedata acquisition module 102 of the present invention.

In this embodiment, thedata acquisition module 102, thebalancing module 105, and thepower module 106 may be fixedly mounted on theframe 107, and connected to thecarrier 103 through acomponent 302 of theframe 107 that is connected to the carrier 103 (not shown). By such a design, thedata acquisition module 102, thebalancing module 105, and thepower module 106 can be integrated and then connected to thecarrier 103.

Therecessed portion 301 on theframe 107 may be used to make room for theconnectors 203 in thetray 1012 shown in fig. 2 for connecting thecarriers 103.

Referring to fig. 4, fig. 4 is a schematic view of an embodiment of the X-ray detector module, the data acquisition module and the carrier of the present invention.

As can be seen from fig. 4, thepart 203 of theX-ray detection module 101 connected to the carrier 103 (not shown in the figure) and thepart 302 of thedata acquisition module 102 connected to thecarrier 103 are in a complementary shape. Furthermore, a suitable gap is maintained between theparts 203 and 302, so that theX-ray detection module 101 and thedata acquisition module 102 do not have any contact or connection except for the wires for data transmission.

Referring to fig. 5, fig. 5 is a schematic diagram of an embodiment of the fail-safe module 104 in the image capturing apparatus according to the present invention.

In an embodiment of the present invention, two fail-safe modules may be disposed on theimage capturing apparatus 100. Of course, only one or more fail-safe modules may be provided.

In one embodiment of the invention, where there are multiple fail safe modules, the configuration of each fail safe module may be the same.

In one embodiment of the present invention, the failsafe device 104 may include abarrier 501, asensor 502, and anut 503. The blockingmember 501 stands on theframe 107 and passes through thetray 1012 through thethrough hole 504 on thetray 1012 for blocking displacement of theX-ray detection module 101 or thedata acquisition module 102 with respect to thecarrier 103 that may occur during rotation. Thesensor 502 is located on thebarrier 501 and generates an alarm signal when it is approached or touched by theX-ray detection module 101 or thedata acquisition module 102. Thenut 503 is sleeved on the blockingmember 501 and keeps a clearance with theX-ray detection module 101 and thedata acquisition module 102, and the diameter of the nut is larger than that of thethrough hole 504. Thenut 503 is used to prevent thedata acquisition module 102 of theX-ray detection module 101 from falling off in the axial direction of the blockingmember 501.

During the rotation of the gantry, whether theX-ray detection module 101 or thedata acquisition module 102 is displaced relative to thecarrier 103 due to a fault, the blockingmember 501 is caused to approach or even touch the throughhole 504, and the displacement can be prevented from being further increased by the supporting force of thethrough hole 504. Meanwhile, thesensor 501 on the blockingmember 501 may generate an alarm signal because it is touched or detects a change in the gap.

Fig. 6 is a schematic diagram illustrating an embodiment of abalancing module 105 in an image capturing device according to the present invention.

In one embodiment of the invention, two balancing modules may be provided, one for force balancing in the 180 degree direction and one for force balancing in the 90 degree direction.

In one embodiment of the present invention, the two balancing modules may have the same structure.

In one embodiment of the present invention, thebalancing module 105 may include:housing 601,support bar 602,weight 603,sensor 604, andcover 605.

Thehousing 601 may be fixedly mounted to theframe 107 for enclosing 603 the weight. The upwardly facing side of thehousing 601 may be designed to be open. Thesupport rod 602 may be fixedly erected on theframe 107 and located within a range enclosed by thehousing 601, and thesupport rod 602 may be used to place and support a weight block. Theweight 603 may comprise a plurality of unequal weight blocks for providing the weight required for force balancing. When actually assembling theweight block 603, a plurality of suitable weight blocks can be selected according to the required weight and put into thehousing 601 through thesupport rod 602. Thesensor 604 may be disposed on an inner wall of thehousing 601, and normally, a gap is maintained between thesensor 604 and theweight block 603, and when theweight block 603 shakes due to a failure of thestay 602, thesensor 604 is touched by theweight block 603, and a corresponding warning signal is generated. Thecover 605 is used to cover the opening of thehousing 601 and limit the overall height of theweight 603 after it is placed on thebrace 602. When theweight 603 rocks due to a failure of thebrace 602, thecover 605 may block theweight 603 from being thrown out of the housing. Further, the total height of the correct weight can be calculated in advance and then subtracted from the height of thehousing 601, the difference being taken as the thickness of thecover 605. Thus, when the operator installing the weight is loading the wrong weight, thecover 605 will not cover, thereby alerting the operator to the wrong weight assembly.

An image acquisition device for a CT machine according to an embodiment of the present invention has been described so far. According to the image acquisition device of the invention, the image acquisition device can:

(1) the deformation of the X-ray detector module in the rotation process is reduced, and the quality of the CT image is improved;

(2) when the X-ray detector module or the data acquisition module generates relative displacement in the rotation process, the displacement is prevented from further expanding and an alarm is given;

(3) the alarm device has the advantages that a reminding function is provided for operators who install the balancing weights, the balancing weights are prevented from being installed wrongly, blocking can be provided when the balancing weights are not flexible, and an alarm can be given.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (13)

1. An image acquisition device for a CT machine, comprising:

an X-ray detection module;

a data acquisition module; and

the bearing piece is a bearing moving coil of a rack of the CT machine and is used for bearing the X-ray detection module and the data acquisition module; wherein the X-ray detection module and the data acquisition module are respectively and independently connected to the bearing piece and respectively extend out of the periphery of the bearing moving coil along the radial direction of the bearing moving coil.

2. The image capturing device of claim 1, wherein: the parts connected with the bearing parts in the X-ray detection module and the parts connected with the bearing parts in the data acquisition module are arranged in a mutually crossed manner and keep a gap.

3. The image capturing device of claim 1, wherein: the part connected with the bearing part in the X-ray detection module and the part connected with the bearing part in the data acquisition module are in concave-convex complementary shapes.

4. The image capturing device of claim 1, wherein: the image acquisition device further comprises a power module, a balance module and a frame for connecting the data acquisition module, the power module and the balance module.

5. The image capturing device of claim 4, wherein: the data acquisition module, the balancing module and the power module are connected to the carrier through a component of the frame that is connected to the carrier.

6. The image capturing device of claim 5, wherein: the X-ray detection module comprises an X-ray detector and a tray for supporting the X-ray detector, the X-ray detector is fixed on the tray, and the tray is connected to the bearing piece through a connecting piece on the tray.

7. The image capturing device of claim 6, wherein: the image acquisition device further comprises a failure protection module for preventing the displacement from further increasing when the X-ray detection module or the data acquisition module is displaced relative to the bearing piece in the rotation process.

8. The image capturing device of claim 7, wherein: the fail safe module further comprises:

a blocking member erected on the frame and passing through the tray through a through hole on the tray for blocking the relative displacement; and

and the nut is sleeved on the blocking piece, keeps a gap with the X-ray detection module and the data acquisition module, and has a diameter larger than that of the through hole.

9. The image capturing device of claim 8, wherein: the fail safe module further includes a sensor located on the barrier that generates an alarm signal when approached or touched by the X-ray detection module or the data acquisition module.

10. The image capturing device of claim 4, wherein: the balancing module includes:

a weight block for providing a weight required for force balance;

the shell is positioned on the frame and used for wrapping the balancing weight, and one surface of the shell is open;

the supporting rod is positioned in the frame and used for placing and supporting the balancing weight; and

and the cover is used for shielding the opening and limiting the total height of the counterweight block after being placed on the supporting rod.

11. The image capturing device of claim 10, wherein: the balancing module includes a sensor located on an inner wall of the housing and maintaining a gap with the weight.

12. The image capturing device of claim 10, wherein: the balancing module comprises a 180-degree balancing module and a 90-degree balancing module.

13. A CT machine comprising an image acquisition device according to any one of claims 1 to 12.

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