A stable and reliable CT performance testing phantom

Abstract

The utility model discloses a stable and reliable CT performance detection phantom, including a box body, wherein the front end of the box body is provided with an accessory placement groove, the other side of the box body is provided with a pure water infusion cylinder, and the other side of the external sealing plate is provided with a quick water filling and drainage structure. The stable and reliable CT performance detection phantom is provided with an inner sealing ring, an annular reserved groove, an external thread sealing port, an external sealing plate and a rubber sealing ring. When in use, before infusion, the positioning chuck is grasped and the external sealing plate is rotated to unscrew the external thread sealing port from the inside of the pure water infusion cylinder, and then screwed in again after being filled with pure water. As the rubber sealing ring on one side of the external thread sealing port presses against the inner sealing ring, the external sealing plate enters the annular reserved groove, and the sealing is completed. When draining water later, the external thread sealing port can be unscrewed, thereby realizing the function of facilitating water injection and drainage, and solving the problem that the device does not have the function of facilitating water injection and drainage.

Description

Technical Field

[0001] The utility model relates to the technical field of CT detection phantoms, in particular to a stable and reliable CT performance detection phantom. Background Art

[0002] CT examination is one of the most commonly used radiological diagnostic methods, and the CT performance test phantom is one of the main tools for calibrating the CT value of CT equipment. By using the CT equipment to scan the test phantom, the actual working condition of the CT equipment can be directly judged based on the feedback data.

[0003] The common CT performance test phantoms currently on the market are generally water phantom modules, which have a relatively simple structure. They are usually a plastic water injection cylinder filled with pure water. After scanning with a CT device, the CT value, uniformity and noise of the equipment can be measured. There are some functional deficiencies in actual use and there is room for improvement. For example, most of the CT performance test water phantoms currently on the market have a water injection hole on one side, through which water is injected and drained. The actual water injection and drainage efficiency is low, and the drainage is not thorough. The interior cannot be cleaned and does not have the function of facilitating water injection and drainage.

[0004] Now, a new type of stable and reliable CT performance detection phantom is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a stable and reliable CT performance detection phantom to solve the problem of the lack of the function of convenient water injection and drainage proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stable and reliable CT performance detection phantom, comprising a box body, a front end of the box body is provided with an accessory placement groove, a rear end of the box body is provided with a first foam pad, a phantom groove is provided at the middle position of the top of the first foam pad, a box cover is movably hinged on one side of the box body, a second foam pad is provided inside the box cover, a level placement groove is provided at the middle position of the top of the second foam pad, a bubble level is horizontally placed inside the level placement groove, a pure water perfusion cylinder is provided on the other side of the box body, an external sealing plate is provided on one side of the pure water perfusion cylinder, two groups of positioning clamps are fixedly connected to one side of the external sealing plate, an arc-shaped supporting plate is provided at the bottom of the pure water perfusion cylinder, a first concave seat is fixedly connected to the rear end of one side of the box body, a second concave seat is fixedly connected to the front end of one side of the box body, and a quick water adding and drainage structure is provided on the other side of the external sealing plate.

[0007] The quick water adding and drainage structure includes an external thread sealing port, which is fixedly connected to the other side of the external sealing plate, a rubber sealing ring is glued to one side of the external thread sealing port, an inner sealing ring is fixedly connected to one side of the pure water filling cylinder, and an annular reserved groove is arranged inside one side of the pure water filling cylinder.

[0008] Preferably, the outer diameter of the external thread sealing port is consistent with the inner diameter of the pure water filling cylinder, and the outer thread of the external thread sealing port is consistent with the inner thread of the pure water filling cylinder.

[0009] Preferably, the inner diameter of the annular reserved groove is consistent with the outer diameter of the external sealing plate, and one side of the external sealing plate is flush with one side of the pure water perfusion cylinder.

[0010] Preferably, one side of the rubber sealing ring is in contact with one side of the inner sealing ring, and the inner diameters of the inner sealing ring and the rubber sealing ring are consistent.

[0011] Preferably, the front and rear ends of the top of the arc-shaped support plate are movably connected with pulling belts respectively, and a holding ring is provided inside the pulling belt. The shape and size of the top of the arc-shaped support plate are consistent with the shape and size of the bottom of the pure water perfusion cylinder.

[0012] Preferably, two groups of horizontality limiting bolts are provided on the top of one side of the external sealing plate, and the vertical center lines of the pure water perfusion cylinder and the arc-shaped supporting plate coincide with each other.

[0013] Preferably, a card slot is provided at the bottom of the positioning card head, the shapes and sizes of the first concave card seat and the second concave card seat are consistent, and the position sizes of the positioning card head and the card slot correspond to the position sizes of the first concave card seat and the second concave card seat.

[0014] Preferably, handles are movably connected at the middle positions of the front and rear ends of the box body, female buckles are installed on one side of the front and rear ends of the box cover, male buckles are fixedly connected to the tops of the front and rear ends of the box body, and the tops of the box body, the first concave socket, and the second concave socket are consistent in height.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the stable and reliable CT performance detection phantom not only realizes the function of facilitating water injection and drainage, realizes the function of facilitating lifting the phantom, but also realizes the function of accurate engagement;

[0016] (1) By providing an inner sealing ring, an annular reserved groove, an outer thread sealing port, an outer sealing plate and a rubber sealing ring, when in use, the pure water filling cylinder is horizontally placed in the phantom groove of the first foam pad in the box body, and the pure water filling cylinder is first filled with pure water before CT scanning. Before filling, the positioning clamp is grasped and the outer sealing plate is rotated to screw the outer thread sealing port out from the inside of the pure water filling cylinder, and then screwed in again after filling with pure water. As the rubber sealing ring on one side of the outer thread sealing port presses against the inner sealing ring, the outer sealing plate enters the annular reserved groove, and the sealing is completed. When draining water later, the outer thread sealing port can be screwed out, and the efficiency of water filling and drainage is improved, realizing the function of facilitating water filling and drainage;

[0017] (2) By providing an arc-shaped support plate, a pulling belt and a holding ring, when in use, the pure water filling cylinder filled with water has a large mass and a smooth exterior. When moving the position, the operator can grab the holding ring on the pulling belt and pull it upward with force, and then use the arc-shaped support plate to lift the pure water filling cylinder as a whole for adjustment, thereby realizing the function of facilitating the lifting of the mold body;

[0018] (3) By providing the first concave card seat and the second concave card seat, when in use, when placing the pure water perfusion cylinder, the bottom card slot of the positioning card head on one side of the pure water perfusion cylinder needs to be stuck on one side of the box body, and the first concave card seat and the second concave card seat specify the position for the positioning card head to be stuck in, and the bottom card slot can be just stuck in the side opening of the first concave card seat and the second concave card seat, thereby realizing the function of accurate opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the front cross-sectional structure of the pure water perfusion cylinder of the utility model;

[0021] Figure 3 This is a schematic diagram of the top view of the arc-shaped supporting plate of the utility model;

[0022] Figure 4 It is a schematic diagram of the box structure from top view of the present utility model.

[0023] In the figure: 1. box body; 2. handle; 3. accessory placement slot; 4. first foam pad; 5. mold body slot; 6. box cover; 7. female buckle; 8. second foam pad; 9. level placement slot; 10. bubble level; 11. male buckle; 12. pure water infusion cylinder; 13. inner sealing ring; 14. annular reserved groove; 15. external thread sealing port; 16. external sealing plate; 17. rubber sealing ring; 18. positioning clamp; 19. slot; 20. level limit bolt; 21. arc support plate; 22. pulling belt; 23. holding ring; 24. first concave clamping seat; 25. second concave clamping seat. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-4 A stable and reliable CT performance detection phantom comprises a box body 1, an accessory placement slot 3 is arranged at the front end of the box body 1, a first foam pad 4 is arranged at the rear end of the box body 1, a phantom slot 5 is arranged at the middle position of the top of the first foam pad 4, a box cover 6 is movably hinged on one side of the box body 1, a second foam pad 8 is arranged inside the box cover 6, a level placement slot 9 is arranged at the middle position of the top of the second foam pad 8, a bubble level 10 is horizontally placed inside the level placement slot 9, and a bubble level 10 is arranged on the other side of the box body 1. There is a pure water perfusion cylinder 12, an external sealing plate 16 is arranged on one side of the pure water perfusion cylinder 12, two groups of horizontal limiting bolts 20 are arranged on the top of one side of the external sealing plate 16, two groups of positioning clamps 18 are fixedly connected to one side of the external sealing plate 16, handles 2 are movably connected to the middle positions of the front and rear ends of the box body 1, female buckles 7 are respectively installed on one side of the front and rear ends of the box cover 6, male buckles 11 are respectively fixedly connected to the top of the front and rear ends of the box body 1, and a quick water filling and drainage structure is arranged on the other side of the external sealing plate 16;

[0026] See also Figure 1-4 A stable and reliable CT performance detection phantom also includes a rapid water filling and drainage structure, which includes an external thread sealing port 15, which is fixedly connected to the other side of an external sealing plate 16, and a rubber sealing ring 17 is glued to one side of the external thread sealing port 15, and an inner sealing ring 13 is fixedly connected to one side of the pure water perfusion cylinder 12, and an annular reserved groove 14 is provided inside one side of the pure water perfusion cylinder 12;

[0027] The outer diameter of the external thread sealing port 15 is consistent with the inner diameter of the pure water filling tube 12, the outer thread of the external thread sealing port 15 is consistent with the inner thread of the pure water filling tube 12, the inner diameter of the annular reserved groove 14 is consistent with the outer diameter of the external sealing plate 16, one side of the external sealing plate 16 is flush with one side of the pure water filling tube 12, one side of the rubber sealing ring 17 is in contact with one side of the inner sealing ring 13, and the inner diameters of the inner sealing ring 13 and the rubber sealing ring 17 are consistent, which is convenient for water addition and drainage;

[0028] Specifically, Figure 1 and Figure 2As shown, grasp the positioning clamp 18 and rotate the external sealing plate 16, unscrew the external thread sealing port 15 from the inside of the pure water filling cylinder 12, and then screw it back in after filling with pure water. As the rubber sealing ring 17 on one side of the external thread sealing port 15 presses against the inner sealing ring 13, the external sealing plate 16 enters the annular reserved groove 14, and the sealing is completed. When draining water later, the external thread sealing port 15 can be unscrewed, and the efficiency of filling and draining water is improved.

[0029] Embodiment 2: An arc-shaped support plate 21 is provided at the bottom of the pure water perfusion cylinder 12, and the front and rear ends of the top of the arc-shaped support plate 21 are movably connected with a pulling belt 22, and a holding ring 23 is provided inside the pulling belt 22. The shape and size of the top of the arc-shaped support plate 21 are consistent with the shape and size of the bottom of the pure water perfusion cylinder 12, and the vertical center lines of the pure water perfusion cylinder 12 and the arc-shaped support plate 21 coincide with each other, so as to facilitate the lifting and moving of the mold body;

[0030] Specifically, Figure 1 and Figure 3 As shown, by grasping the grip ring 23 on the pulling belt 22 and pulling it upward with force, the pure water perfusion cylinder 12 can be lifted as a whole by using the arc-shaped supporting plate 21 for adjustment.

[0031] Embodiment 3: A first concave card seat 24 is fixedly connected to the rear end of one side of the box body 1, and a second concave card seat 25 is fixedly connected to the front end of one side of the box body 1. A card slot 19 is provided at the bottom of the positioning card head 18. The shapes and sizes of the first concave card seat 24 and the second concave card seat 25 are consistent. The position sizes of the positioning card head 18 and the card slot 19 correspond to the position sizes of the first concave card seat 24 and the second concave card seat 25 one by one. The top heights of the box body 1, the first concave card seat 24, and the second concave card seat 25 are consistent, which facilitates the rapid alignment of the mold body;

[0032] Specifically, Figure 1 and Figure 4 As shown, the first concave card seat 24 and the second concave card seat 25 specify positions for the positioning card head 18 to be inserted, and the card slot 19 at the bottom can be just stuck in the side openings of the first concave card seat 24 and the second concave card seat 25.

[0033] Working principle: When the utility model is in use, first, the pure water filling cylinder 12 is horizontally placed in the mold groove 5 of the first foam pad 4 in the box body 1. Before performing a CT scan, fill the pure water filling cylinder 12 with pure water. Before filling, grasp the positioning clamp 18 and rotate the external sealing plate 16 to screw the external thread sealing port 15 out from the inside of the pure water filling cylinder 12. After filling with pure water, screw it back in. As the rubber sealing ring 17 on one side of the external thread sealing port 15 presses against the internal sealing ring 13, the external sealing plate 16 enters the annular reserved groove 14, and the sealing is completed. When draining water later, the external thread sealing port 15 can be screwed out, and the efficiency of filling and draining water is improved. The pure water filling cylinder 12 filled with water has a large mass and a smooth exterior. When moving the position, the operator can grasp the gripping ring 23 on the pulling belt 22 and pull it upward with force, and the arc-shaped support plate 21 can be used to lift the pure water filling cylinder 12 as a whole for adjustment. When placing the pure water filling cylinder 12, the positioning clamp 18 on one side of the pure water filling cylinder 12 has its bottom slot 19 engaged with one side of the box body 1, and the first concave clamp seat 24 and the second concave clamp seat 25 specify the position for the positioning clamp 18 to be inserted, and the bottom slot 19 can be just engaged with the side openings of the first concave clamp seat 24 and the second concave clamp seat 25.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A stable and reliable CT performance testing phantom, comprising a box (1), characterized in that: The front end of the box body (1) is provided with an accessory placement groove (3), the rear end of the box body (1) is provided with a first foam pad (4), a mold body groove (5) is provided at the middle position of the top of the first foam pad (4), a box cover (6) is movably hinged on one side of the box body (1), a second foam pad (8) is provided inside the box cover (6), a level placement groove (9) is provided at the middle position of the top of the second foam pad (8), a bubble level (10) is horizontally placed inside the level placement groove (9), and the box body (1) is provided with a first foam pad (4) at the middle position of the top of the first foam pad (4). A pure water perfusion cylinder (12) is provided on the other side, an external sealing plate (16) is provided on one side of the pure water perfusion cylinder (12), two groups of positioning clamps (18) are fixedly connected to one side of the external sealing plate (16), an arc-shaped supporting plate (21) is provided at the bottom of the pure water perfusion cylinder (12), a first concave clamping seat (24) is fixedly connected to the rear end of one side of the interior of the box body (1), a second concave clamping seat (25) is fixedly connected to the front end of one side of the interior of the box body (1), and a quick water filling and drainage structure is provided on the other side of the external sealing plate (16); The quick water filling and drainage structure comprises an external thread sealing port (15), the external thread sealing port (15) is fixedly connected to the other side of the external sealing plate (16), a rubber sealing ring (17) is glued to one side of the external thread sealing port (15), an inner sealing ring (13) is fixedly connected to one side of the interior of the pure water filling cylinder (12), and an annular reserved groove (14) is provided inside one side of the pure water filling cylinder (12).

2. A stable and reliable CT performance testing phantom according to claim 1, characterized in that: The outer diameter of the external thread sealing port (15) is consistent with the inner diameter of the pure water filling tube (12), and the outer thread of the external thread sealing port (15) is consistent with the inner thread of the pure water filling tube (12).

3. A stable and reliable CT performance testing phantom according to claim 1, characterized in that: The inner diameter of the annular reserved groove (14) is consistent with the outer diameter of the external sealing plate (16), and one side of the external sealing plate (16) is flush with one side of the pure water perfusion cylinder (12).

4. The stable and reliable CT performance testing phantom according to claim 1, characterized in that: One side of the rubber sealing ring (17) is in contact with one side of the inner sealing ring (13), and the inner diameters of the inner sealing ring (13) and the rubber sealing ring (17) are consistent.

5. The stable and reliable CT performance testing phantom according to claim 1, characterized in that: The front and rear ends of the top of the arc-shaped support plate (21) are movably connected with a pulling belt (22), and a holding ring (23) is arranged inside the pulling belt (22). The shape and size of the top of the arc-shaped support plate (21) are consistent with the shape and size of the bottom of the pure water perfusion cylinder (12).

6. A stable and reliable CT performance testing phantom according to claim 1, characterized in that: Two groups of horizontality limiting bolts (20) are arranged on the top of one side of the external sealing plate (16), and the vertical center lines of the pure water perfusion cylinder (12) and the arc-shaped supporting plate (21) coincide with each other.

7. The stable and reliable CT performance testing phantom according to claim 1, characterized in that: A card slot (19) is provided at the bottom of the positioning clamp head (18); the shapes and sizes of the first concave card seat (24) and the second concave card seat (25) are consistent; the position sizes of the positioning clamp head (18) and the card slot (19) correspond one to one with the position sizes of the first concave card seat (24) and the second concave card seat (25).

8. The stable and reliable CT performance testing phantom according to claim 1, characterized in that: The box body (1) is movably connected to a handle (2) at the middle position of the front and rear ends, and a female buckle (7) is installed on one side of the front and rear ends of the box cover (6). The top of the front and rear ends of the box body (1) is fixedly connected to a male buckle (11), and the tops of the box body (1), the first concave card seat (24), and the second concave card seat (25) are of the same height.

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