CN210277189U

CN210277189U - Spiral CT low-dose body model

Info

Publication number: CN210277189U
Application number: CN201920013352.9U
Authority: CN
Inventors: 陈国伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-04
Filing date: 2019-01-04
Publication date: 2020-04-10
Anticipated expiration: 2029-01-04

Abstract

The utility model discloses a spiral CT low dose phantom, which comprises a phantom main body, wherein a connecting support rod is movably arranged on the surface of one end of the phantom main body, a curved surface attachment strap is movably arranged at the bottom end of the connecting support rod, a U-shaped groove is arranged at the top end of the curved surface attachment strap, a movable cavity is arranged in the phantom main body and extends to the surface of the other end of the phantom main body, and a radiation mechanism is arranged in the movable cavity; the radiation mechanism comprises an assembly cover plate and a material detection barrel, the assembly cover plate is movably mounted at the top end of the inner wall of the movable cavity, the material detection barrel is mounted at the bottom end of the assembly cover plate, and the gas detection barrel is mounted at the bottom end of the assembly cover plate. The utility model discloses a be provided with a series of structures for when this spiral CT phantom convenient to detach and installation, the phantom is long tube-shape, satisfies spiral CT scanning characteristic, can carry out the radiation absorption and the low dose detection of multiple material, in order to reach the effect that improves the detection precision.

Description

Spiral CT low-dose body model

Technical Field

The utility model relates to a spiral CT technical field specifically is a spiral CT low dose phantom.

Background

Before the spiral CT machine is used, the quality of the CT machine is detected by using a phantom as a common CT machine, performance indexes and dosage values such as radiation dosage of the CT machine are detected by the phantom, and the accuracy of the parameters directly influences the quality level of a graph provided by the whole CT equipment and even influences the disease condition diagnosis of a doctor on a patient.

Although the existing CT phantom has many varieties, detection materials such as solid water and the like in the CT phantom are generally distributed in a vertical state, the spiral CT continuously rotates along the long axis of a human body at a constant speed, and the scanning bed synchronously advances at a constant speed, so that the whole scanning track spirally advances to perform volume scanning, and is influenced by the scanning mode.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low dose phantom of spiral CT to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a spiral CT low-dose body model comprises a body model main body, wherein a connecting support rod is movably mounted on the surface of one end of the body model main body, a curved-surface access plate is movably mounted at the bottom end of the connecting support rod, a U-shaped groove is formed in the top end of the curved-surface access plate, a movable cavity is arranged in the body model main body and extends to the surface of the other end of the body model main body, and a radiation mechanism is mounted in the movable cavity; the radiation mechanism comprises an assembly cover plate and a material detection barrel, the assembly cover plate is movably mounted at the top end of the inner wall of the movable cavity, the material detection barrel is mounted at the bottom end of the assembly cover plate, and the gas detection barrel is mounted at the bottom end of the assembly cover plate.

Preferably, the bottom of the gas detection cylinder body is provided with a sealing spiral disc through a thread body, the bottom of the sealing spiral disc is provided with a metal detection cylinder body through the thread body, and the metal detection cylinder body is internally provided with a separate storage cavity.

Preferably, a connecting supporting plate is installed at the connecting position of the material detection cylinder and the assembling cover plate.

Preferably, the bottom end of the curved-surface access board is provided with a support frame, the bottom end of the support frame is provided with a fixed base, and the bottom end of the fixed base is provided with an anti-skid pad.

Preferably, the surface of one end of the curved strap and the surface of the assembling cover plate are both provided with handles through pin shafts.

Preferably, the surface of the other end of the curved-surface butt strap is provided with an extension sleeve cavity, and the surface of the extension sleeve cavity is movably provided with a movable plate through a limiting sliding groove.

Preferably, the surface of the movable plate is provided with an extension groove, the surface of the movable plate outside the extension groove is provided with a shock pad, and the surface of the movable plate at one end of the extension groove is provided with a threaded through hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this low dose phantom of spiral CT through the slipmat, can increase the coefficient of friction of fixed baseplate bottom, when carrying out the fixed stay and the horizontal displacement operation, can realize abundant anti-skidding effect, through the curved surface attachment strap, is provided with U type groove on it, when can supporting the phantom main part, carries out spacing operation to it.

2. This low dose phantom of spiral CT through movable cavity, can form the movable passage of a specific size, when being convenient for detect the barrel and get into wherein, through the assembly apron, can seal and open the operation to movable cavity, is convenient for pack or take out movable cavity simultaneously to a plurality of detection barrels, does benefit to in-service use.

3. This low dose phantom of spiral CT, detect the barrel through the metal, and deposit the cavity with the branch and combine the use, can carry out fixed mounting for the object of metal to a plurality of dosage detection materials, satisfy the radiation dosage detection demand of reality, through sealed spiral shell dish, can realize respectively when the sealed effect of metal detection barrel and gaseous detection barrel one end, be convenient for realize the connection of the two, and detect the barrel through the material, can be used to fill some radiation dosage and detect required different liquid material, and the metal detects the barrel, gaseous detection barrel and the combination use of material detection barrel three, be located an axle center position altogether, can be convenient for spiral CT radiation carry out under the state of helical motion and scanning, better absorbed radiation dosage, can guarantee that three length all reaches about 300mm when necessary, satisfy the practicality and detect the demand.

4. This low dose phantom of spiral CT through the handle, can applys the effort to support frame and phantom main part respectively, drives it and carries out the displacement to drive the phantom main part and carry out the motion of overturning, the actual operation of being convenient for through connecting branch, can regard as the support of phantom main part upset motion, and the phantom main part upward movement of being convenient for opens the assembly apron, and takes out inside detection barrel.

5. This low dose phantom of spiral CT through the fly leaf, can carry out the vertical support to the phantom main part when the detection part is taken out to the phantom main part to use with extending the cover chamber and combining, can carry on spacingly to the one end of fly leaf, improve the stability that the fly leaf supported the phantom main part.

Drawings

FIG. 1 is a schematic view of the entire structure of embodiment 1;

fig. 2 is a schematic view of the internal structure of the phantom body of example 1;

FIG. 3 is a schematic view of the supporting frame of embodiment 2;

fig. 4 is a schematic view of the surface of the movable plate in embodiment 2.

In the figure: 1. a fixed base; 2. a support frame; 3. a curved-surface butt strap; 4. connecting a support rod; 5. a non-slip mat; 6. a handle; 7. a phantom body; 8. a metal detection cylinder; 9. a movable cavity; 10. a material detection cylinder; 11. connecting the supporting plate; 12. a separate storage cavity; 13. sealing the spiral disc; 14. a gas detection cylinder; 15. assembling a cover plate; 16. a movable plate; 17. an extension sleeve cavity; 18. a threaded through hole; 19. a shock pad; 20. an extension groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1 and 2, the spiral CT low-dose phantom of the embodiment includes a phantom main body 7, a connecting support rod 4 is movably mounted on one end surface of the phantom main body 7 through a hinge shaft, the connecting support rod 4 can perform a rotational motion at a certain angle under the action of the hinge shaft, a curved strap 3 is movably mounted at the bottom end of the connecting support rod 4, a U-shaped groove is formed at the top end of the curved strap 3, the phantom main body 7 can be limited while being supported, a movable cavity 9 is formed in the phantom main body 7, the movable cavity 9 extends to the other end surface of the phantom main body 7, a movable channel can be formed, and a radiation mechanism is mounted in the movable cavity 9; the radiation mechanism comprises an assembly cover plate 15 and a material detection cylinder body 10, the assembly cover plate 15 is movably arranged at the top end of the inner wall of the movable cavity 9 through a thread body and is influenced by the structure of the thread body, the assembly cover plate 15 can rotate along the thread body under the stress condition, the separation effect between the assembly cover plate 15 and the movable cavity 9 is further realized, the material detection cylinder body 10 is arranged at the bottom end of the assembly cover plate 15 through the thread body, the interior of the material detection cylinder body is hollow and can be used for filling liquid materials required by spiral CT low-dose detection, the material detection cylinder body can be used for absorbing radiation during spiral CT scanning, the gas detection cylinder body 14 is arranged at the bottom end of the assembly cover plate 15, the interior of the material detection cylinder body is hollow, the actual opening is downward, the material detection cylinder body can be used for filling gaseous substances.

Specifically, the bottom end of the gas detection cylinder 14 is provided with a sealing screw disk 13 through a screw body, two ends of the sealing screw disk 13 are provided with internal screw bodies, the bottom end of the gas detection cylinder 14 can be sealed by the sealing screw disk 13, the bottom end of the sealing screw disk 13 is provided with a metal detection cylinder 8 through the screw body, the top end of the metal detection cylinder 8 can be sealed by the sealing screw disk 13, the gas detection cylinder 14 is isolated from the metal detection cylinder 8 through the sealing screw disk 13, and the metal detection cylinder 8 is internally provided with a storage cavity 12, when in actual use, a plurality of objects with metal dosage detection materials can be fixedly installed to meet the actual radiation dosage detection requirement, because the spiral CT scanning is a spiral motion, the metal detection cylinder 8, the gas detection cylinder 14 and the material detection cylinder 10 are combined for use and are located at the axis position of the same spiral motion, and the length of each cylinder is optimally ensured to be more than 300mm, so that the requirement of spiral CT scanning is met.

Further, the connecting support plate 11 is installed at the junction of the material detection cylinder 10 and the assembling cover plate 15, the connecting support plate 11 is fixedly installed at the bottom end of the assembling cover plate 15, the actual material detection cylinder 10 is connected with the connecting support plate 11 through a threaded body, and the material detection cylinder 10 is limited through a bolt, so that the indirect stable connection with the assembling cover plate 15 can be ensured.

Further, support frame 2 is installed to the bottom of curved surface attachment strap 3, and fixed baseplate 1 is installed to the bottom of support frame 2, and fixed baseplate 1's bottom installs slipmat 5, and the coefficient of friction of slipmat 5 itself is great, and when the in-service use, carries out direct contact with spiral CT's movable bed body top surface, when the bed body motion, can realize the antiskid effect to fixed baseplate 1 to carry out fixed stay by support frame 2 to curved surface attachment strap 3 and phantom main part 7.

Furthermore, the handle 6 is installed through the round pin axle in the one end surface of curved surface attachment strap 3 and the surface of assembly apron 15, can hold the handle 6 on the assembly apron 15, drives the phantom main part 7 and carries out the upset motion, is convenient for to taking out of its inside testing component, also can hold two handles 6 simultaneously, exerts the effort to whole individual model, and then realizes the motion effect.

The using method of the embodiment comprises the following steps: in the actual use process, the handle 6 on the assembly cover plate 15 can be held by hand, the assembly cover plate 15 is applied with acting force to rotate, the assembly cover plate 15 is opened, liquid materials and metal materials required for detection are respectively filled into the material detection cylinder 10 and the metal detection cylinder 8, some normal air can be stored in the gas detection cylinder 14, after the assembly cover plate 15 is reset and installed, the two handles 6 can be held by hand simultaneously, the phantom is integrally placed on a movable bed body of a spiral CT (computed tomography) examination bed, the fixed base 1 is contacted with the top surface of the bed body and generates supporting force, the curved-surface lapping plate 3 and upper parts thereof are supported by the supporting frame 2, the spiral CT is started, when spiral scanning is carried out, the metal detection cylinder 8, the gas detection cylinder 14 and the material detection cylinder 10 are positioned at the axial center of a spiral motion and move along with the moving bed body, absorbing low-dose radiation in sequence, after CT radiation scanning operation is finished, putting the phantom body 7 in a vertical state, opening the assembly cover plate 15, applying acting force to the handle 6 and the assembly cover plate 15 integrally, taking three detection cylinders out of the movable cavity 9 simultaneously, fixing the sealing screw disc 13, applying rotation torque to the metal detection cylinder 8, realizing the separation effect between the metal detection cylinder 8 and the sealing screw disc 13, sampling metal in the metal detection cylinder 8, realizing radiation dose detection, dismounting the connecting supporting plate 11, further opening the material detection cylinder 10, sampling the radiation absorption material in the interior, facilitating the radiation dose detection, dismounting the sealing screw disc 13, further opening the gas detection cylinder 14, sampling and detecting gas in the interior, and because the radiation dose scanned by spiral CT is low, filling the material with strong radiation absorption capacity into the material detection cylinder 10, so as to improve the detection precision of radiation dose, after the detection barrel of three different materials reachd the dose testing result, gather between the data and handle in unison.

Example 2

The structure of the helical CT low-dose phantom of the present embodiment is basically the same as that of the helical CT low-dose phantom of embodiment 1, and the difference is that: an extension sleeve cavity 17 is arranged on the surface of the other end of the curved-surface butt strap 3, a movable plate 16 is movably mounted on the surface of the extension sleeve cavity 17 through a limiting sliding groove, and a hinged shaft is used for realizing limiting connection between one end of the movable plate 16 and the inner wall of the limiting sliding groove (see fig. 3 and 4). The movable plate 16 is acted by the limiting sliding groove, can extend into the extending sleeve cavity 17, can also be partially led out through the extending sleeve cavity 17, and is limited and supported by one end of the movable plate 16 through the extending sleeve cavity 17 to support the vertical phantom main body 7.

Specifically, the surface of the movable plate 16 is provided with an extension groove 20, when the phantom main body 7 is in a vertical state, the connecting support rod 4 moves downwards through the extension groove 20, so that the bottom end of the phantom main body 7 is fully contacted with the surface of the movable plate 16, the surface of the movable plate 16 outside the extension groove 20 is provided with a shock pad 19, the shock pad 19 is made of plastic materials and has a strong buffering effect, the shock pad is contacted with the bottom end of the phantom main body 7 to achieve a certain shock absorption protection effect, the surface of the movable plate 16 at one end of the extension groove 20 is provided with a threaded through hole 18, and under necessary conditions, components such as special bolts can extend into the threaded through hole 18 and enter the bottom end surface of the curved access plate 3 through the threaded hole to fixedly mount the whole movable plate 16.

The using method of the embodiment comprises the following steps: with phantom main part 7 in the vertical state, before going out three detection barrel, can manually exert effort to fly leaf 16, push extension cover 17 inside with its one end, make fly leaf 16 be in the horizontality this moment, in addition, can set up two screw holes in the bottom of curved surface attachment strap 3, for the support effect who improves fly leaf 16, can fill in some specific bolts in screw through-hole 18 and screw hole inside in step, improve the stability performance of fly leaf 16, when phantom main part 7 is in the vertical state, connecting rod 4 extends to inside the extension groove 20, make phantom main part 7 bottom and shock pad 19 contact, guarantee certain shock attenuation effect, at this moment, wholly support phantom main part 7 by fly leaf 16, be convenient for artifically to the effort of applying such as assembly cover plate 15, take out operations such as to three detection barrel.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A helical CT low dose phantom comprising a phantom body (7), characterized in that: a connecting support rod (4) is movably mounted on the surface of one end of the phantom main body (7), a curved surface attachment strap (3) is movably mounted at the bottom end of the connecting support rod (4), a U-shaped groove is formed in the top end of the curved surface attachment strap (3), a movable cavity (9) is arranged in the phantom main body (7), the movable cavity (9) extends to the surface of the other end of the phantom main body (7), and a radiation mechanism is mounted in the movable cavity (9); the radiation mechanism comprises an assembly cover plate (15) and a material detection cylinder body (10), the assembly cover plate (15) is movably mounted at the top end of the inner wall of the movable cavity (9), the material detection cylinder body (10) is mounted at the bottom end of the assembly cover plate (15), and a gas detection cylinder body (14) is mounted at the bottom end of the assembly cover plate (15).

2. The helical CT low dose phantom according to claim 1, wherein: the bottom of the gas detection cylinder (14) is provided with a sealing screw disc (13) through a screw body, the bottom of the sealing screw disc (13) is provided with a metal detection cylinder (8) through a screw body, and the metal detection cylinder (8) is internally provided with a separate storage cavity (12).

3. The helical CT low dose phantom according to claim 1, wherein: and a connecting supporting plate (11) is arranged at the joint of the material detection cylinder (10) and the assembling cover plate (15).

4. The helical CT low dose phantom according to claim 1, wherein: support frame (2) are installed to the bottom of curved surface attachment strap (3), and fixed baseplate (1) is installed to the bottom of support frame (2), and slipmat (5) are installed to the bottom of fixed baseplate (1).

5. The helical CT low dose phantom according to claim 1, wherein: and the surface of one end of the curved-surface access plate (3) and the surface of the assembly cover plate (15) are provided with handles (6) through pin shafts.

6. A helical CT low dose phantom according to claim 1 or 5, characterized in that: the surface of the other end of the curved-surface butt strap (3) is provided with an extension sleeve cavity (17), and a movable plate (16) is movably mounted on the surface of the extension sleeve cavity (17) through a limiting sliding groove.

7. The helical CT low dose phantom according to claim 6, wherein: the surface of the movable plate (16) is provided with an extension groove (20), the surface of the movable plate (16) at the outer side of the extension groove (20) is provided with a shock pad (19), and the surface of the movable plate (16) at one end of the extension groove (20) is provided with a threaded through hole (18).