A bed plate device with a movable compensating protection ring and a corresponding incomplete protection ring

Abstract

The present application belongs to the field of CT scanning technology, and in particular, relates to a bed plate device with a movable compensating protective ring and a corresponding incomplete protective ring. An incomplete protective ring device includes a scanning frame, a scanning hole in the central area, and the scanning hole is covered with a protective layer; the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate device with a movable compensating protective ring. A bed plate device with a movable compensating protective ring includes a bed plate, and the radial direction of the bed plate has a certain curvature; the bed plate is applied to the scanning frame, the central area of ​​the scanning frame has a scanning hole, the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate; when the bed plate is placed in the arc-shaped through groove, the bed plate and the scanning hole form a circular hole so that during CT scanning, when the scanning frame is rotated to any angle, the attenuation distribution in the detector field of view is uniform, and data without circumferential attenuation distribution specificity is obtained to support air correction and scanning.

Description

Technical Field

[0001] The present application belongs to the field of CT scanning technology, and in particular relates to a bed plate device with a movable compensating protection ring and a corresponding incomplete protection ring. Background Art

[0002] The CT scanner bed is an important device used to support the patient during the CT scan. It needs to remain stable and precise when the patient enters and exits the scanning aperture. Since the CT scanner bed must maintain sufficient rigidity during movement, this limits the choice of its material thickness and cannot be too thin. This rigidity requirement is mainly to ensure that the patient is accurately positioned and to reduce any possible movement during the scan, so as to obtain clear and precise images.

[0003] However, the material thickness of the CT scanning bed has a direct impact on its performance. The thicker the material, the stronger its absorption and attenuation of X-rays, which will cause the attenuation to be unevenly distributed around the patient. This unevenness will affect the quality and consistency of the scanned image, especially in medical images that require spatial resolution and low contrast resolution. In addition, the increase in material thickness will also affect the signal-to-noise ratio (SNR). At the same X-ray dose, the signal-to-noise ratio will decrease due to the increase in material thickness, which means that the proportion of noise in the useful signal increases. When the thickness of the bed causes the attenuation of the rays to be non-negligible, the uneven circumferential attenuation will make the attenuation before the patient inconsistent at various circumferential angles during the scanning process. The noise at the low signal-to-noise ratio angle directly determines the noise of the entire image, which results in a waste of scanning dose at high signal-to-noise ratio angles, resulting in dose waste or image quality degradation relative to the same radiation dose under the design of uniform attenuation. The degradation of image quality is often manifested as the difficulty in recognizing the fine structure of the image, which in turn affects the doctor's diagnosis of the lesion.

[0004] In summary, the design of the CT scanning bed is crucial to the problem of circumferential attenuation consistency. Summary of the invention

[0005] Based on this, it is necessary to provide a bed board device with a movable compensating protective ring and a corresponding incomplete protective ring to solve the above technical problems.

[0006] In a first aspect, the present application provides a bed board device with a movable compensating protection ring, comprising:

[0007] A bed board, wherein the radial direction of the bed board has a certain curvature; wherein,

[0008] The bed plate is applied to a scanning frame, the central area of ​​the scanning frame has a scanning hole, and the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate;

[0009] When the bed plate is placed in the arc-shaped through groove, the bed plate and the scanning hole form a circular hole, so that during CT scanning, when the scanning frame is rotated to any angle, the attenuation distribution in the detector field is uniform, thereby obtaining data without circumferential attenuation distribution specificity to support air correction and clinical patient scanning.

[0010] In some practicable embodiments, the bed board is a curved board with a constant thickness.

[0011] In some practicable embodiments, the bed board is made of a carbon fiber board.

[0012] In some practicable embodiments, the side walls of the bed board in the width direction are in contact with the groove walls.

[0013] Some of the embodiments that can be implemented also include positioning the sliding assembly;

[0014] The positioning sliding assembly includes sliding mechanisms separated on both sides of the bed board; wherein,

[0015] The sliding mechanism limits the moving direction of the bed board during the reciprocating movement of the bed board along its length direction, so that the bed board can be inserted into the arc-shaped through groove.

[0016] In some embodiments, the sliding mechanism is a sliding wheel.

[0017] In some practicable embodiments, when the bed plate and the scanning hole form a circular hole, air calibration and clinical scanning operations are performed.

[0018] In a second aspect, the present application provides a non-complete protection ring device, which is applied to the aforementioned bed board device with a movable compensating protection ring, comprising:

[0019] A scanning frame, wherein the central area of ​​the scanning frame has a scanning hole, and the scanning hole is covered with a protective layer; the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate device of the movable compensating protective ring; wherein,

[0020] The groove wall and the groove bottom of the arc-shaped through groove both have the protective layer;

[0021] When the arc-shaped slot enters the bed plate device with the movable compensating protective ring, the side walls in the width direction and the bottom wall of the bed plate device with the movable compensating protective ring are in contact with the slot walls and the slot bottom of the arc-shaped slot, and the bed plate and the scanning hole form a circular hole.

[0022] In some practicable embodiments, positioning sliding assemblies are provided on opposite sides of the scanning frame, and each positioning sliding assembly includes a sliding mechanism separated on both sides of the bed board; wherein,

[0023] The sliding mechanism limits the moving direction of the bed board during the reciprocating movement of the bed board along its length direction, so that the bed board can be inserted into the arc-shaped through groove.

[0024] In some embodiments, the positioning sliding component is a sliding wheel connected to the scanning frame.

[0025] Beneficial effects: The present application provides a non-complete protective ring, including a scanning frame, a central area of ​​which has a scanning hole, and the scanning hole is covered with a protective layer; the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate device of the movable compensating protective ring; wherein both the groove wall and the groove bottom of the arc-shaped through groove have the protective layer; when the arc-shaped through groove enters the bed plate device with the movable compensating protective ring, the side walls in the width direction of the bed plate device of the movable compensating protective ring, and the bottom wall are both fitted with the groove wall and the groove bottom of the arc-shaped through groove, and the bed plate and the scanning hole form a circular hole, so that during CT scanning, when the scanning frame is rotated to any angle, the attenuation distribution in the detector field of view is uniform, thereby obtaining data without circumferential attenuation distribution specificity to support air correction and clinical patient scanning. In addition, the present application provides a bed board device with a movable compensating protective ring, comprising a bed board, wherein the radial direction of the bed board has a certain curvature; wherein the bed board is applied to a scanning frame, the central area of ​​the scanning frame has a scanning hole, and the bottom of the scanning hole has an arc-shaped through groove, the groove wall height of the arc-shaped through groove is the same as the thickness of the bed board; when the bed board is placed in the arc-shaped through groove, the bed board and the scanning hole form a circular hole. In summary, by using an asymmetric protective ring in combination with a movable patient support bed board that can match the notch of the protective ring, the circumferential attenuation of the patient is evenly distributed, while maintaining negligible deformation under the requirement of thin attenuation. Thereby, unnecessary doses can be reduced while ensuring image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a structural schematic diagram of a bed board device with a movable compensating protection ring in one embodiment;

[0028] Figure 2It is a structural schematic diagram of an incomplete protection ring device and a bed plate device capable of moving and compensating the protection ring before being combined in one embodiment;

[0029] Figure 3 It is a structural principle diagram of an embodiment before a non-complete protection ring device and a bed plate device capable of moving and compensating the protection ring are combined;

[0030] Figure 4 It is a schematic structural diagram of a combination of an incomplete protection ring device and a bed plate device capable of moving and compensating the protection ring in one embodiment;

[0031] Figure 5 It is a structural principle diagram of a combination of an incomplete protection ring device and a bed plate device that can move and compensate for the protection ring in one embodiment;

[0032] Figure 6 The diagram is a schematic diagram of the lengthwise structure of a bed board and a sliding assembly of a bed board device with a movable compensating protection ring in one embodiment.

[0033] Reference numerals:

[0034] 1. Bed board; 2. Scanning frame; 3. Sliding assembly; 4. Protective layer. DETAILED DESCRIPTION

[0035] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all couplings of one or more related listed items.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" 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 a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] like Figures 1 to 6 As shown, in the first aspect, the present application provides a bed plate device with a movable compensating protective ring, comprising a bed plate 1, wherein the radial direction of the bed plate 1 has a certain curvature. The bed plate 1 is applied to a scanning frame 2, wherein the central area of ​​the scanning frame 2 has a scanning hole, and the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate 1; when the bed plate 1 is placed in the arc-shaped through groove, the bed plate 1 and the scanning hole form a circular hole, so that during CT scanning, when the scanning frame 2 rotates to any angle, the attenuation distribution in the detector field of view is uniform, thereby obtaining data without circumferential attenuation distribution specificity to support air correction and clinical patient scanning.

[0041] This application aims to solve technical problems in the prior art such as uneven distribution of attenuators and limited imaging quality, while taking into account equipment safety, flexibility and patient experience.

[0042] Specifically, the bed board 1 of the present application is designed in an arc shape, and the radial curvature of the bed board 1 is completely matched with the arc-shaped through slot of the scanning frame 2, so as to ensure that after being inserted into the through slot, a complete circular hole is formed with the scanning hole, that is, when the bed board 1 and the scanning hole form a circular hole, air correction and clinical scanning operations are performed. This design effectively solves the problem of uneven distribution of attenuation objects during CT scanning, makes the radiation distribution around the patient more uniform, and greatly improves the spatial resolution and low-contrast resolution of the imaging image.

[0043] It should be noted that since the bed board 1 needs to slide in the through groove and the inner diameter of the scanning hole must be consistent, the bed board 1 in the present application is not only an arc-shaped plate, but also has a constant thickness. At the same time, the side walls of the bed board 1 in the width direction are tightly fitted with the through groove walls of the scanning frame 2 to form a gapless structure, thereby avoiding data errors caused by shaking. The overall design reflects high requirements for stability and precision in both mechanics and geometry. In addition, in order to ensure the rigidity of the bed board 1, the material of the bed board 1 is preferably a carbon fiber sheet. In other words, the carbon fiber bed board 1 has the characteristics of high strength, light weight, and low X-ray absorption, and is very suitable for use in medical imaging equipment. The carbon fiber sheet not only meets the high rigidity requirements of the scanning bed, but also significantly reduces the absorption of X-rays, thereby improving the signal-to-noise ratio (SNR), especially in medical images that require spatial resolution and low contrast resolution.

[0044] In one embodiment, in order to realize the smooth movement of the bed board 1 on the scanning frame 2, the present application designs a sliding assembly 3 structure. A bed board device with a movable compensating protective ring also includes a positioning sliding assembly 3; the positioning sliding assembly 3 includes sliding mechanisms separated on both sides of the bed board 1; wherein the sliding mechanism limits the moving direction of the bed board 1 during the reciprocating movement of the bed board 1 along its length direction, so that the bed board 1 can be inserted into the arc-shaped through groove.

[0045] Specifically, the sliding assembly 3 can be composed of sliding wheels arranged on both sides of the bed plate 1. It should be noted that the sliding wheels are horizontally arranged on one side or both sides of the scanning frame 2. The sliding wheels are made of a polymer material with a low friction coefficient, such as polytetrafluoroethylene. This material can not only reduce the friction resistance during the sliding process, but also has the property of wear resistance, thereby ensuring the long-term durability of the sliding assembly 3.

[0046] The sliding assembly 3 can be fixed on the ground by means of a bracket or the like, or it can be fixed on the scanning frame 2. That is to say, when the bed board 1 is moving, the sliding assembly 3 is located obliquely below the bed board 1 to limit the bed board 1 and restrict the swing of the bed board 1 in the width direction. The specific position of the sliding assembly 3 can be set as needed, and the present application does not impose any limitation on this. In addition, the number of sliding assemblies 3 separated on both sides of the bed board 1 can be set as needed. For example, three sliding assemblies 3 are respectively provided on both sides of the bed board 1, and the sliding assemblies 3 are arranged at intervals. The sliding assembly 3 can also have the advantage of modularity, and all sliding assemblies 3 can be individually disassembled and replaced with the bracket. The modular design is not only convenient for maintenance, but also can adjust the structure of the sliding assembly 3 according to different models of scanning frames 2 to adapt to the requirements of equipment of various specifications.

[0047] like Figures 1 to 6As shown, in the second aspect, the present application provides a non-complete protective ring device, which is applied to the aforementioned bed plate device with a movable compensating protective ring, including: a scanning frame 2, wherein the central area of ​​the scanning frame 2 has a scanning hole, and the scanning hole is covered with a protective layer 4; the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate device with the movable compensating protective ring; when the arc-shaped through groove enters the bed plate device with the movable compensating protective ring, the side walls in the width direction of the bed plate device with the movable compensating protective ring, and the bottom wall are both in contact with the groove wall and the groove bottom of the arc-shaped through groove, and the bed plate 1 and the scanning hole form a circular hole.

[0048] The groove wall and groove bottom of the arc-shaped groove can be provided with the protective layer 4 as required; when the groove wall and groove bottom of the arc-shaped groove are provided with the protective layer 4, since the bed board 1 is also present at this position, the thickness of the protective layer 4 can be appropriately reduced, that is, the thickness of the protective layer 4 at this position is less than the thickness of the protective layer 4 at other positions. In addition, the arc-shaped groove can also be provided without the protective layer 4 as required, so that the bed board 1 is used as the protective layer 4, thereby ensuring that the circumferential distribution of the attenuation object is more uniform.

[0049] Specifically, the scanning frame 2 with a scanning hole cooperates with the arc-shaped bed plate 1 and works in coordination to achieve efficient operation of the CT scanning device. That is, the protective layer 4 is fixed to the central area of ​​the scanning frame 2, and an arc-shaped through groove is provided at the bottom thereof to accommodate the bed plate 1. The groove wall and groove bottom of the arc-shaped through groove can also be covered with the protective layer 4 as required. The main material of the protective layer 4 can be a lead composite material, which has a strong X-ray shielding ability and can effectively protect patients and operators from the harm of radiation.

[0050] The incomplete design of the protective layer 4 is to ensure the X-ray shielding effect while retaining the operating space for inserting and moving the bed board 1. When the bed board 1 is inserted into the through slot, its side wall and bottom wall are fully fitted with the slot wall and the slot bottom respectively, forming an integrated closed structure, thereby ensuring that the circumferential distribution of the attenuation object is more uniform. This design not only ensures the safety of the equipment, but also improves the stability of the scanning process.

[0051] In one embodiment, positioning sliding assemblies 3 are provided on opposite sides of the scanning frame 2, and each positioning sliding assembly 3 includes a sliding mechanism separated on both sides of the bed board 1; wherein,

[0052] The sliding mechanism limits the moving direction of the bed board 1 during the reciprocating movement of the bed board 1 along its length direction, so that the bed board 1 can be inserted into the arc-shaped through groove. The positioning sliding assembly 3 is connected to the scanning frame 2. The sliding mechanism is a sliding wheel.

[0053] Specifically, the sliding mechanism can be fixed on the scanning frame 2 by a structure such as a bracket, or fixed on the ground by a structure such as a bracket. Thus, the relative position of the sliding mechanism and the scanning frame 2 is fixed, so that the sliding mechanism can limit the scanning frame 2 during the reciprocating movement of the bed board 1 toward the scanning frame 2. The sliding mechanism can be set on both sides of the oblique direction below the bed board 1. The present application does not limit the specific position, and it is sufficient to limit the bed board 1. Example

[0054] The present application adopts an asymmetric protective ring with a movable patient support device that can fit the gap of the protective ring, namely, a bed board 1. On the one hand, the bed board 1 with the asymmetric waterproof ring can make the circumferential attenuation of the patient evenly distributed, while at the same time making the fine structure of the image visible, which is beneficial for doctors to diagnose the lesions.

[0055] Design of the bed board 1: In the entire travel range of the bed board 1, the radial thickness of the bed board 1 is constant, and the shape of the bed board 1 is the arc surface of the circle where the waterproof ring is located.

[0056] Air calibration and scanning: The air calibration and clinical scanning of this application need to be performed when the bed board 1 completely covers the gap of the waterproof ring.

[0057] During the CT scan, the patient is first placed on the bed board 1. The arc-shaped design of the bed board 1 is perfectly matched with the arc-shaped slot of the scanning frame 2, ensuring that the bed board 1 can be smoothly inserted into the slot. By positioning the sliding assembly 3, the bed board 1 can move back and forth along the length direction, and the sliding wheel limits the moving direction of the bed board 1, ensuring that the bed board 1 can be accurately inserted into the arc-shaped slot. During the scanning process, the bed board 1 and the scanning hole form a circular hole, so that the X-rays can be evenly distributed around the patient, thereby obtaining a high-quality scanned image, especially the fine structure of the image can be identified.

[0058] The bed board 1 device of the present application can be widely used in various types of CT scanning equipment, whether it is a high-end device in a large hospital or a portable device in a small clinic, it can be adapted by adjusting the structure of the sliding component 3. In addition, the bed board 1 device of the present application can also be used in other medical imaging equipment that requires uniform X-ray distribution, such as MRI (Magnetic Resonance Imaging) and PET (Positron Emission Tomography) scanning equipment.

[0059] The bed board 1 device of the present application adopts a carbon fiber plate material, which has the characteristics of strong rigidity, and can avoid or reduce the influence caused by deformation during the reciprocating movement of the bed board 1. In addition, the modular design of the sliding assembly 3 also reduces the cost of replacement and maintenance.

[0060] In summary, the present application provides a bed board device with a movable compensating protection ring and a corresponding incomplete protection ring. Through its unique design, it effectively solves the problem of uniform attenuation distribution of the patient support bed board 1 during CT scanning, while maintaining the stability and image quality of the equipment. The bed board 1 device of the present application has a wide range of application prospects and can effectively improve the imaging quality of medical imaging equipment.

[0061] The various embodiments in the present disclosure are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0062] The protection scope of the present disclosure is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the scope and spirit of the present disclosure. If these changes and modifications fall within the scope of the claims of the present disclosure and their equivalents, the intention of the present disclosure also includes these changes and modifications.

Claims

1. A bed plate device with a movable compensating protection ring, characterized in that: include: A bed board (1), wherein the bed board (1) is an arc-shaped board; wherein: The bed plate (1) is applied to a scanning frame (2); the central area of ​​the scanning frame (2) has a scanning hole, and the bottom of the scanning hole has an arc-shaped through groove, and the groove wall height of the arc-shaped through groove is the same as the thickness of the bed plate (1); When the bed plate (1) is placed in the arc-shaped through groove, the bed plate (1) and the scanning hole form a circular hole, so that when the scanning frame (2) is rotated to any angle during CT scanning, the attenuation distribution in the detector field of view is uniform, thereby obtaining data without circumferential attenuation distribution specificity to support air correction and clinical patient scanning; It also includes a positioning sliding assembly (3); The positioning sliding assembly (3) comprises sliding mechanisms separated on both sides of the bed board (1); wherein: The sliding mechanism limits the moving direction of the bed board (1) during the reciprocating movement of the bed board (1) along its length direction, so that the bed board (1) can be inserted into the arc-shaped through groove.

2. The bed board device with a movable compensating protection ring according to claim 1, characterized in that: The bed board (1) has a constant thickness.

3. The bed board device with a movable compensating protection ring according to claim 1, characterized in that: The material of the bed board (1) is a carbon fiber board.

4. The bed board device with a movable compensating protection ring according to claim 1, characterized in that: The side wall of the bed board (1) in the width direction is in contact with the groove wall.

5. The bed board device with a movable compensating protection ring according to claim 1, characterized in that: The sliding mechanism is a sliding wheel.

6. The bed board device with a movable compensating protection ring according to claim 1, characterized in that: When the bed board (1) and the scanning hole form a circular hole, air calibration and clinical scanning operations are performed.

7. A non-complete guard ring device, characterized in that: The bed board (1) device for a movable compensating protection ring according to any one of claims 1 to 6 comprises: A scanning frame (2) having a scanning hole in its central region, the scanning hole being covered with a protective layer (4); the bottom of the scanning hole having an arc-shaped through groove, the groove wall height of the arc-shaped through groove being the same as the thickness of the bed plate (1) device of the movable compensating protective ring; wherein: When the arc-shaped through groove enters the bed plate (1) device with the movable compensating protective ring, the side walls in the width direction and the bottom wall of the bed plate (1) device with the movable compensating protective ring are both in contact with the groove wall and groove bottom of the arc-shaped through groove, and the bed plate (1) and the scanning hole form a circular hole.

8. The non-complete guard ring device according to claim 7, characterized in that: Positioning sliding assemblies (3) are arranged on opposite sides of the scanning frame (2), and each of the positioning sliding assemblies (3) comprises a sliding mechanism separated on both sides of the bed board (1); wherein: The sliding mechanism limits the moving direction of the bed board (1) during the reciprocating movement of the bed board (1) along its length direction, so that the bed board (1) can be inserted into the arc-shaped through groove.

9. The non-complete guard ring device according to claim 8, characterized in that: The positioning sliding component (3) is a sliding wheel and is connected to the scanning frame (2).

Images