Die body, imaging calibration assembly and magnetic resonance imaging equipment

Abstract

The invention relates to the technical field of magnetic resonance, and discloses a die body, an imaging calibration assembly and magnetic resonance imaging equipment. The die body comprises a hollow sphere and a sealing assembly. And the hollow sphere is integrally formed and processed. The hollow sphere defines an inner cavity. The hollow ball body comprises a protruding part with a liquid injection opening, and the liquid injection opening is communicated with the inner cavity. The sealing assembly is arranged on the protruding part and used for blocking the liquid injection opening of the protruding part. In the application, the pressure resistance of the die body is enhanced, and the probability of the problems of spalling, liquid leakage and the like of the die body in the transportation and use process is reduced.

Description

Technical Field

[0001] The present application relates to the field of magnetic resonance technology, for example, to a phantom, an imaging calibration component and a magnetic resonance imaging device. Background Art

[0002] When the Magnetic Resonance Imaging (MRI) device is working, it is necessary to scan the phantom first for imaging calibration. The phantom is used to simulate different parts of the human body and is an essential component when the MRI device is working.

[0003] In the related art, a spherical mold is formed by first machining two hemispherical shells and then gluing the two hemispherical shells together to form a hollow sphere, namely, the spherical mold.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the related art, the spherical mold body is processed by gluing two hemispherical shells together, which makes the pressure resistance of the inner cavity of the spherical mold body poor, and is prone to problems such as bulging, cracking, and leakage during transportation and use. Therefore, the environmental requirements during transportation are relatively strict, resulting in high transportation costs.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a phantom, an imaging calibration component, and a magnetic resonance imaging device, which enhance the pressure resistance of the phantom and reduce the probability of problems such as bulging, cracking, and leakage of the phantom during transportation and use.

[0009] In some embodiments, a phantom is provided for imaging calibration of medical imaging equipment, including: a hollow sphere, which is formed in one piece and defines an inner cavity, the hollow sphere includes a protrusion with an injection port, and the injection port is connected to the inner cavity; a sealing assembly is arranged on the protrusion and is used to seal the injection port of the protrusion.

[0010] In the above embodiment, the hollow sphere is integrally formed and processed, which enhances the pressure resistance of the mold body and reduces the probability of the mold body causing problems such as rupture and leakage during transportation and use. The hollow sphere defines an inner cavity for containing a solution to simulate different parts of the human body. The hollow sphere includes a protruding portion having a liquid injection port, which is connected to the inner cavity, and the solution can be injected into the inner cavity of the hollow sphere through the liquid injection port. A sealing component is provided on the protruding portion to block the liquid injection port of the protruding portion to prevent leakage.

[0011] Optionally, the hollow sphere is integrally formed by rotational molding.

[0012] In the above embodiment, the hollow sphere is integrally formed by rotational molding, and the molding process of rotational molding is simple, which reduces the molding cost.

[0013] Optionally, the sealing assembly is detachably disposed on the protruding portion.

[0014] In the above embodiment, the sealing component is detachably arranged on the protruding part. Specifically, when the sealing component is detached from the protruding part, liquid can be injected into the liquid injection port. When the sealing component is connected to the protruding part, liquid leakage of the mold body is prevented, and the use is convenient.

[0015] Optionally, the sealing assembly includes: a sealing bolt detachably connected to the protruding portion of the hollow sphere; and a sealing ring disposed between the sealing bolt and the protruding portion.

[0016] In the above embodiment, the sealing assembly includes a sealing bolt and a sealing ring to achieve a sealed connection between the sealing assembly and the protrusion, so as to improve the sealing effect of the liquid injection port, thereby reducing the probability of liquid leakage from the mold body. The sealing bolt is detachably connected to the protrusion of the hollow sphere to open or block the liquid injection port of the protrusion. The sealing ring is arranged between the sealing bolt and the protrusion. Specifically, when the sealing bolt is connected to the protrusion to block the liquid injection port, the sealing ring is arranged between the sealing bolt and the protrusion to seal the gap between the sealing bolt and the protrusion, thereby achieving a sealed connection between the sealing assembly and the protrusion, and reducing the probability of liquid leakage from the mold body.

[0017] Optionally, the sealing assembly further includes: an annular groove, which is provided on a side of the sealing bolt facing the protruding portion, the annular groove being coaxially arranged with the sealing ring; and the sealing ring is partially embedded in the annular groove.

[0018] In the above embodiment, the annular groove is provided on the side of the sealing bolt facing the protrusion. Specifically, the annular groove is provided on the sealing bolt, and the position of the annular groove corresponds to the surface of the protrusion facing the sealing bolt. The annular groove is coaxially arranged with the sealing ring, and the sealing ring is partially embedded in the annular groove. When the sealing bolt blocks the liquid injection port of the protrusion, the sealing ring is squeezed so that the sealing ring seals the gap between the sealing bolt and the protrusion to prevent liquid leakage. In addition, the annular groove can limit the deformation area of ​​the sealing ring after being squeezed to achieve precise sealing.

[0019] Optionally, the inner diameter of the hollow sphere ranges from 137.5 mm to 138.5 mm, and the outer diameter of the hollow sphere ranges from 149.5 mm to 150.5 mm.

[0020] In the above embodiment, the inner diameter of the hollow sphere ranges from 137.5 mm to 138.5 mm, and the outer diameter of the hollow sphere ranges from 149.5 mm to 150.5 mm. When applied to imaging calibration of a magnetic resonance imaging device, the calibration accuracy is improved, thereby improving the image quality of the magnetic resonance imaging device.

[0021] In some embodiments, an imaging calibration component is provided, comprising: a placement bracket; a phantom as in any of the previous embodiments, placed on the placement bracket; wherein the placement bracket comprises: a support seat; a limiting groove, arranged on the upper surface of the support seat, for limiting the hollow sphere; a positioning groove, arranged on the upper surface of the support seat and connected to the limiting groove, for positioning the protrusion.

[0022] In the above embodiment, the imaging calibration assembly includes a placement bracket and a phantom as in any of the previous embodiments, and the phantom is placed on the placement bracket. In actual application, the placement bracket facilitates the placement and position adjustment of the phantom.

[0023] In the above embodiment, the limiting groove is provided on the upper surface of the support seat, that is, the limiting groove is provided on the upper surface of the support seat to limit the position of the hollow sphere. Specifically, when the mold body is placed on the placement bracket, the hollow sphere is partially embedded in the limiting groove to prevent the hollow sphere from axially moving. The positioning groove is provided on the upper surface of the support seat, and the positioning groove is connected with the limiting groove, that is, the positioning groove is provided on the upper surface of the support seat, and the positioning groove is connected with the limiting groove to position the protrusion. Specifically, when the mold body is placed on the placement bracket, the protrusion is located in the positioning groove, which not only limits the position of the protrusion, but also prevents the hollow sphere from rotating in the circumferential direction.

[0024] Optionally, grooves are provided on both sides of the placement bracket to facilitate hand-held transportation.

[0025] Optionally, the ratio of the diameter of the notch of the limiting groove to the outer diameter of the hollow sphere is 0.4 to 0.8.

[0026] In the above embodiment, during the imaging calibration process, by cooperating with the limiting groove and the positioning groove and setting the diameter of the limiting groove and the outer diameter of the hollow sphere in a suitable ratio, the peripheral position of the protrusion can be avoided to ensure the accuracy of imaging calibration.

[0027] Optionally, the placement bracket also includes: a transverse positioning mark, which is arranged on the upper surface of the support seat, for positioning the placement bracket in the transverse direction; and / or, a longitudinal positioning mark, which is arranged on the upper surface of the support seat, for positioning the placement bracket in the longitudinal direction, and the positioning direction of the longitudinal positioning mark is perpendicular to the positioning direction of the transverse positioning mark.

[0028] In the above embodiment, the transverse positioning mark is set on the upper surface of the support seat, that is, the transverse positioning mark is set on the upper surface of the support seat, which is used to position the placement bracket in the transverse direction. The longitudinal positioning mark is set on the upper surface of the support seat, that is, the longitudinal positioning mark is set on the upper surface of the support seat, which is used to position the placement bracket in the longitudinal direction. The positioning direction of the longitudinal positioning mark is perpendicular to the positioning direction of the transverse positioning mark. By making the two positioning directions perpendicular to each other, the placement position of the placement bracket can be positioned in multiple directions, thereby improving the positioning accuracy.

[0029] In some embodiments, a magnetic resonance imaging device is provided, comprising: a device body including a scanning bed; and an imaging calibration component as in any of the previous embodiments, placed on the scanning bed.

[0030] In the above embodiments, the imaging calibration assembly as in any of the previous embodiments is placed on the scanning bed to scan the phantom and perform imaging calibration.

[0031] Optionally, the placement bracket includes a horizontal positioning mark and / or a vertical positioning mark, and the magnetic resonance imaging device also includes: a positioning light, which is arranged on the device body; wherein, when positioning the placement position of the imaging calibration component, the direction of the light beam emitted by the positioning light coincides with the horizontal positioning mark and / or the vertical positioning mark.

[0032] In the above embodiment, the positioning light is arranged on the device body, and the placement position of the imaging calibration component is positioned by cooperating with the positioning light and the horizontal positioning mark and / or the vertical positioning mark. Specifically, the direction of the light beam emitted by the positioning light coincides with the horizontal positioning mark and / or the vertical positioning mark, thereby achieving accurate positioning of the placement position of the placement bracket, thereby placing the model in the target placement state, thereby improving the accuracy of the imaging calibration.

[0033] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0035] Figure 1 is a schematic diagram of the structure of the phantom provided by an embodiment of the present disclosure;

[0036] Figure 2 yes Figure 1 An exploded schematic diagram of a phantom provided in the illustrated embodiment;

[0037] Figure 3 yes Figure 1 A schematic structural diagram of a sealing bolt of a mold body provided in the illustrated embodiment;

[0038] Figure 4 is a schematic diagram of the structure of an imaging calibration component provided in an embodiment of the present disclosure;

[0039] Figure 5 yes Figure 4 A schematic diagram of the structure of a bracket for placing an imaging calibration assembly provided in the illustrated embodiment;

[0040] Figure 6 is a schematic structural diagram of a magnetic resonance imaging device provided by an embodiment of the present disclosure;

[0041] Figure 7 It is a schematic diagram of a scanning cross section when the magnetic resonance imaging device provided by an embodiment of the present disclosure scans a phantom.

[0042] Reference numerals:

[0043] 100: mold body; 101: hollow sphere; 102: protrusion; 103: liquid injection port; 104: sealing assembly; 105: sealing bolt; 106: sealing ring; 107: annular groove; 108: nut; 109: threaded column; 110: connecting groove;

[0044] 200: imaging calibration component; 201: placing bracket; 202: supporting seat; 203: limiting groove; 204: positioning groove; 205: horizontal positioning mark; 206: vertical positioning mark; 207: horizontal strip groove; 208: vertical strip groove; 209: groove;

[0045] 300: magnetic resonance imaging equipment; 301: scanning bed; 302: positioning light; 303: imaging device; 304: equipment body. DETAILED DESCRIPTION

[0046] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0047] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0048] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0049] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0050] Unless otherwise stated, the term "plurality" means two or more.

[0051] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0052] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0053] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0054] Combination Figures 1 to 3 As shown, an embodiment of the present disclosure provides a phantom 100 for imaging calibration of a medical imaging device, wherein the medical imaging device includes an MRI device. The phantom 100 includes a hollow sphere 101 and a sealing assembly 104. The hollow sphere 101 is formed by integral molding. The hollow sphere 101 defines an inner cavity. The hollow sphere 101 includes a protrusion 102 having a liquid injection port 103, and the liquid injection port 103 is connected to the inner cavity. The sealing assembly 104 is disposed on the protrusion 102, and the sealing assembly 104 is used to block the liquid injection port 103 of the protrusion 102.

[0055] In this embodiment, the hollow sphere 101 is integrally formed, which enhances the pressure resistance of the mold body 100 and reduces the probability of the mold body 100 causing problems such as rupture and leakage during transportation and use.

[0056] Compared with the splicing structure of gluing two hemispherical shells together in the related art, the hollow sphere 101 of this embodiment is formed in one piece without any splicing process. Its pressure resistance is better than that of the splicing structure in the related art, which reduces the probability of problems such as bursting and leakage during transportation and use, and can achieve convenient transportation and reduce transportation costs.

[0057] In this embodiment, the hollow sphere 101 defines an inner cavity for containing a solution, such as water, to simulate different parts of the human body.

[0058] In this embodiment, the hollow sphere 101 includes a protrusion 102 having a liquid injection port 103, and the liquid injection port 103 is connected to the inner cavity, and a solution can be injected into the inner cavity of the hollow sphere 101 through the liquid injection port 103. The sealing component 104 is arranged on the protrusion 102, and is used to block the liquid injection port 103 of the protrusion 102 to prevent leakage. Specifically, when the sealing component 104 is disassembled and separated from the protrusion 102, the liquid injection port 103 is opened, and the solution can be injected into the inner cavity of the hollow sphere 101. When the sealing component 104 is sealed and connected to the protrusion 102, the liquid injection port 103 is blocked to prevent the solution in the hollow sphere 101 from leaking out.

[0059] Optionally, the protrusion 102 is a cylindrical structure to define the liquid injection port 103. Exemplarily, the protrusion 102 is a cylindrical structure.

[0060] Combination Figure 1 and Figure 2 As shown, in some embodiments, the hollow sphere 101 is integrally formed by rotational molding.

[0061] In this embodiment, the hollow sphere 101 is integrally formed by rotational molding. The rotational molding process is simple, which reduces the molding cost and can enhance the pressure resistance of the mold body 100.

[0062] In the related art, the mold body is machined to form two hemispherical shells, which has a high processing cost. Compared with the related art, the hollow sphere 101 of this embodiment is integrally formed by rotational molding, and the cost of rotational molding is lower than that of machining, thereby reducing the processing cost.

[0063] Combination Figure 1 and Figure 2 As shown, in some embodiments, the sealing assembly 104 is detachably disposed on the protrusion 102 .

[0064] In this embodiment, the sealing assembly 104 is detachably disposed on the protruding portion 102. Specifically, when the sealing assembly 104 is detached from the protruding portion 102, liquid can be injected into the liquid injection port 103. When the sealing assembly 104 is connected to the protruding portion 102, the mold body 100 is prevented from leaking liquid, and it is convenient to use.

[0065] Combination Figures 1 to 3 As shown, in some embodiments, the sealing assembly 104 includes a sealing bolt 105 and a sealing ring 106. The sealing bolt 105 is detachably connected to the protruding portion 102 of the hollow sphere 101. The sealing ring 106 is disposed between the sealing bolt 105 and the protruding portion 102.

[0066] In this embodiment, the sealing assembly 104 includes a sealing bolt 105 and a sealing ring 106 to achieve a sealed connection between the sealing assembly 104 and the protrusion 102, so as to improve the blocking effect of the injection port 103, thereby reducing the probability of leakage of the mold body 100. The sealing bolt 105 is detachably connected to the protrusion 102 of the hollow sphere 101 to open or block the injection port 103 of the protrusion 102. The sealing ring 106 is arranged between the sealing bolt 105 and the protrusion 102. Specifically, when the sealing bolt 105 is connected to the protrusion 102 to block the injection port 103, the sealing ring 106 is arranged between the sealing bolt 105 and the protrusion 102 to seal the gap between the sealing bolt 105 and the protrusion 102, thereby achieving a sealed connection between the sealing assembly 104 and the protrusion 102, and reducing the probability of leakage of the mold body 100.

[0067] In this embodiment, the material of the sealing ring 106 is not limited, as long as it can achieve waterproof sealing, for example, nitrile rubber.

[0068] Combination Figure 3As shown, optionally, the sealing bolt 105 includes a nut 108 and a threaded column 109. The nut 108 includes a first surface and a second surface disposed opposite to each other. The middle portion of the first surface of the nut 108 is connected to the threaded column 109. The second surface of the nut 108 is provided with a connecting groove 110, and the connecting groove 110 is used to abut with an external tool (such as a screwdriver) to drive the nut 108 to rotate through the external tool. The inner wall of the protrusion 102 is provided with a thread, and the threaded column 109 is threadedly connected to the protrusion 102 to achieve a detachable connection between the sealing bolt 105 and the protrusion 102.

[0069] In this embodiment, the nut 108 is driven to rotate by an external tool to drive the threaded column 109 to rotate relative to the protrusion 102, so as to separate or connect the sealing bolt 105 with the protrusion 102, thereby opening or blocking the injection port 103 of the protrusion 102.

[0070] Combination Figure 3 As shown, in some embodiments, the sealing assembly 104 further includes an annular groove 107. The annular groove 107 is provided on the side of the sealing bolt 105 facing the protrusion 102. The annular groove 107 is coaxially arranged with the sealing ring 106. The sealing ring 106 is partially embedded in the annular groove 107.

[0071] In this embodiment, the annular groove 107 is provided on the side of the sealing bolt 105 facing the protrusion 102. Specifically, the annular groove 107 is provided on the sealing bolt 105, and the position of the annular groove 107 corresponds to the surface of the protrusion 102 facing the sealing bolt 105. The annular groove 107 is coaxially arranged with the sealing ring 106, and the sealing ring 106 is partially embedded in the annular groove 107. When the sealing bolt 105 blocks the liquid injection port 103 of the protrusion 102, the sealing ring 106 is squeezed so that the sealing ring 106 blocks the gap between the sealing bolt 105 and the protrusion 102 to prevent liquid leakage. In addition, the annular groove 107 can limit the deformation area of ​​the sealing ring 106 after being squeezed to achieve precise sealing.

[0072] Optionally, the annular groove 107 is formed on the first surface of the nut 108. The position of the annular groove 107 corresponds to the surface of the protrusion 102 facing the first surface, so that the sealing ring 106 is located between the first surface of the nut 108 and the surface of the adjacent protrusion 102, thereby enabling the sealing ring 106 to seal the gap between the sealing bolt 105 and the protrusion 102.

[0073] In some embodiments, the inner diameter of the hollow sphere 101 ranges from 137.5 mm to 138.5 mm, and the outer diameter of the hollow sphere 101 ranges from 149.5 mm to 150.5 mm.

[0074] In this embodiment, the inner diameter of the hollow sphere 101 ranges from 137.5 mm to 138.5 mm, and the outer diameter of the hollow sphere 101 ranges from 149.5 mm to 150.5 mm. When applied to the imaging calibration of the magnetic resonance imaging device 300, the size limitation of the inner diameter and outer diameter of the hollow sphere 101 can improve the calibration accuracy, thereby improving the image quality of the magnetic resonance imaging device 300.

[0075] Optionally, the inner diameter of the hollow sphere 101 is 137.5 mm, 138 mm, or 138.5 mm, and other values ​​between 137.5 mm and 138.5 mm.

[0076] Optionally, the outer diameter of the hollow sphere 101 is 149.5 mm, 150 mm, or 150.5 mm, and other values ​​between 149.5 mm and 150.5 mm.

[0077] Exemplarily, the inner diameter of the hollow sphere 101 is 138 mm, and the outer diameter of the hollow sphere 101 is 150 mm. In this case, the wall thickness of the hollow sphere 101 is 6 mm.

[0078] Combination Figures 1 to 5 As shown, the embodiment of the present disclosure also provides an imaging calibration component 200. The imaging calibration component 200 includes a placement bracket 201 and a phantom 100 as in any of the previous embodiments. The phantom 100 is placed on the placement bracket 201. Among them, the placement bracket 201 includes a support seat 202, a limiting groove 203 and a positioning groove 204. The limiting groove 203 is arranged on the upper surface of the support seat 202, and the limiting groove 203 is used to limit the hollow sphere 101. The positioning groove 204 is arranged on the upper surface of the support seat 202, and the positioning groove 204 is connected to the limiting groove 203, and the positioning groove 204 is used to position the protrusion 102.

[0079] In this embodiment, the imaging calibration assembly 200 includes a placement bracket 201 and a phantom 100 as in any of the previous embodiments. The phantom 100 is placed on the placement bracket 201. In actual application, the placement bracket 201 facilitates the placement and position adjustment of the phantom 100.

[0080] In this embodiment, placing the phantom 100 by placing the bracket 201 helps to adjust the phantom 100 to a target placement state, so as to improve the calibration accuracy and calibration efficiency.

[0081] In this embodiment, the imaging calibration assembly 200 has all the beneficial effects of the phantom 100 of any of the previous embodiments, which will not be described in detail here.

[0082] In this embodiment, the placement bracket 201 includes a support seat 202, a limiting groove 203 and a positioning groove 204. The limiting groove 203 is provided on the upper surface of the support seat 202, that is, the limiting groove 203 is provided on the upper surface of the support seat 202 to limit the hollow sphere 101. Specifically, when the mold body 100 is placed on the placement bracket 201, the hollow sphere 101 is partially embedded in the limiting groove 203 to prevent the hollow sphere 101 from axially moving.

[0083] In this embodiment, the shape of the limiting groove 203 is adapted to the hollow sphere 101, so that the hollow sphere 101 is partially embedded in the limiting groove 203 of the support seat 202. The depth of the limiting groove 203 is not limited, and the hollow sphere 101 can be stably placed on the upper surface of the placement bracket 201 (i.e., the limiting groove 203 of the support seat 202) to prevent the hollow sphere 101 from axially moving. For example, the depth of the limiting groove 203 is 55mm, 60mm or 65mm.

[0084] In this embodiment, the positioning groove 204 is provided on the upper surface of the support seat 202, and the positioning groove 204 is communicated with the limiting groove 203, that is, the positioning groove 204 is provided on the upper surface of the support seat 202, and the positioning groove 204 is communicated with the limiting groove 203, so as to position the protrusion 102. Specifically, when the mold body 100 is placed on the placement bracket 201, the protrusion 102 is located in the positioning groove 204, which can not only limit the position of the protrusion 102, but also prevent the hollow sphere 101 from rotating in the circumferential direction. Moreover, when the sealing component 104 is sealed and connected to the protrusion 102, the positioning groove 204 can limit both the sealing component 104 and the protrusion 102.

[0085] In this embodiment, the shape of the positioning groove 204 is adapted to the protrusion 102 so that the protrusion 102 can be partially or completely located in the positioning groove 204 to locate the position of the protrusion 102, so as to adjust the mold body 100 to the target placement state.

[0086] Exemplarily, when the imaging calibration component 200 is used to perform imaging calibration on the magnetic resonance imaging device 300, the phantom 100 is placed on the placement bracket 201, and the hollow sphere 101 is partially embedded in the limiting groove 203 of the support seat 202 to prevent the hollow sphere 101 from axially moving. The protrusion 102 is located in the positioning groove 204 of the support seat 202, which not only limits the position of the protrusion 102, but also prevents the hollow sphere 101 from circumferentially rotating. Through the cooperation of the limiting groove 203 and the positioning groove 204, the phantom 100 can be quickly adjusted to the target placement state, thereby improving the accuracy and work efficiency of the imaging calibration.

[0087] In this embodiment, the ratio of the diameter of the notch of the limiting groove 203 to the outer diameter of the hollow sphere 101 is 0.4 to 0.8. During the rotational molding process, the protrusion 102 is the injection port of the rotational molding mold, so the inner cavity around the protrusion 102 may be irregular. During the imaging calibration process, by cooperating with the limiting groove 203 and the positioning groove 204, and setting the diameter of the notch of the limiting groove to the outer diameter of the hollow sphere in a suitable ratio, the position around the protrusion 102 can be avoided to ensure the accuracy of the imaging calibration.

[0088] Combination Figure 4 and Figure 5 As shown, optionally, grooves 209 are provided on both sides of the placement bracket 201 to facilitate hand-held transportation.

[0089] Combination Figure 4 and Figure 5 As shown, in some embodiments, the placement bracket 201 further includes a transverse positioning mark 205. The transverse positioning mark 205 is disposed on the upper surface of the support seat 202 and is used to position the placement bracket 201 in the transverse direction.

[0090] In this embodiment, the transverse positioning mark 205 is set on the upper surface of the support base 202, that is, the transverse positioning mark 205 is set on the upper surface of the support base 202 for positioning the placement bracket 201 in the transverse direction, thereby adjusting the placement state of the mold body 100.

[0091] Combination Figure 4 and Figure 5 As shown, optionally, the transverse positioning mark 205 includes two transverse strip grooves 207 located on the same straight line. The two transverse strip grooves 207 are respectively located on opposite sides of the limiting groove 203, and the extension direction of the straight line is the transverse direction of the placement bracket 201, so as to realize the transverse positioning of the placement bracket 201.

[0092] Combination Figure 4 and Figure 5 As shown, in some embodiments, the placement bracket 201 further includes a longitudinal positioning mark 206. The longitudinal positioning mark 206 is disposed on the upper surface of the support base 202 and is used to position the placement bracket 201 in the longitudinal direction.

[0093] In this embodiment, the longitudinal positioning mark 206 is set on the upper surface of the support base 202, that is, the longitudinal positioning mark 206 is set on the upper surface of the support base 202 for positioning the longitudinal direction of the placement bracket 201, thereby adjusting the placement state of the mold body 100.

[0094] Combination Figure 4 and Figure 5As shown, optionally, the longitudinal positioning mark 206 includes two longitudinal strip grooves 208 located on the same straight line. The two longitudinal strip grooves 208 are respectively located on opposite sides of the limiting groove 203, and the extension direction of the straight line is the longitudinal direction of the placement bracket 201, so as to realize the longitudinal positioning of the placement bracket 201.

[0095] Combination Figure 4 and Figure 5 As shown, in some embodiments, the placement bracket 201 further includes a transverse positioning mark 205 and a longitudinal positioning mark 206. The transverse positioning mark 205 is disposed on the upper surface of the support base 202. The longitudinal positioning mark 206 is disposed on the upper surface of the support base 202. The positioning direction of the longitudinal positioning mark 206 is perpendicular to the positioning direction of the transverse positioning mark 205.

[0096] In this embodiment, the placement bracket 201 includes a horizontal positioning mark 205 and a vertical positioning mark 206. The positioning direction of the vertical positioning mark 206 is perpendicular to the positioning direction of the horizontal positioning mark 205. Through two mutually perpendicular positioning directions, the placement position of the placement bracket 201 can be positioned from multiple directions, thereby improving the positioning accuracy, thereby improving the accuracy of adjusting the model 100 to the target placement state, and realizing rapid positioning.

[0097] Combination Figure 4 and Figure 5 As shown, optionally, the straight line where the two transverse strip grooves 207 are located is perpendicular to the straight line where the two longitudinal strip grooves 208 are located, that is, the positioning direction of the longitudinal positioning mark 206 is perpendicular to the positioning direction of the transverse positioning mark 205, so as to realize positioning of the placement position of the placement bracket 201 in two directions, improve the positioning accuracy, and then improve the accuracy of adjusting the model 100 to the target placement state, and realize rapid positioning.

[0098] Combination Figures 1 to 6 Therefore, the embodiment of the present disclosure further provides a magnetic resonance imaging device 300. The magnetic resonance imaging device 300 includes a device body 304 and an imaging calibration component 200 as in any of the previous embodiments. The device body 304 includes a scanning bed 301. The imaging calibration component 200 is placed on the scanning bed 301.

[0099] In this embodiment, the imaging calibration component 200 as in any of the previous embodiments is placed on the scanning bed 301 and can perform imaging calibration by scanning the phantom 100 .

[0100] In this embodiment, the device body 304 of the magnetic resonance imaging device 300 may adopt the structure of the magnetic resonance imaging device in the related art except for the phantom, and is used to obtain medical images of the human body.

[0101] In this embodiment, the magnetic resonance imaging device 300 has all the beneficial effects of the imaging calibration component 200 of any of the previous embodiments, which will not be described in detail here.

[0102] Combination Figures 4 to 6 As shown, in some embodiments, the placement bracket 201 includes a transverse positioning mark 205 and / or a longitudinal positioning mark 206. The magnetic resonance imaging device 300 also includes a positioning light 302. The positioning light 302 is disposed on the device body 304. When the placement position of the imaging calibration component 200 is positioned, the direction of the light beam emitted by the positioning light 302 coincides with the transverse positioning mark 205 and / or the longitudinal positioning mark 206.

[0103] In this embodiment, the magnetic resonance imaging device 300 further includes a positioning light 302, which is disposed on the device body 304. The positioning light 302 cooperates with the horizontal positioning mark 205 and / or the vertical positioning mark 206 to locate the placement position of the imaging calibration component 200. Specifically, the direction of the light beam emitted by the positioning light 302 coincides with the horizontal positioning mark 205 and / or the vertical positioning mark 206, so as to accurately locate the placement position of the placement bracket 201, thereby placing the phantom 100 in a target placement state, thereby improving the accuracy of the imaging calibration.

[0104] In this embodiment, the number of positioning lights 302 is not limited. Exemplarily, the number of positioning lights 302 is one, and the light beam emitted by the positioning light 302 can overlap with the horizontal positioning mark 205, overlap with the vertical positioning mark 206, or overlap with both the horizontal positioning mark 205 and the vertical positioning mark 206. Exemplarily, the number of positioning lights 302 is two, and the light beam emitted by one positioning light 302 can overlap with the horizontal positioning mark 205, and the light beam emitted by the other positioning light 302 can overlap with the vertical positioning mark 206.

[0105] Combination Figure 6 As shown, optionally, the device body 304 further includes an imaging device 303. In actual application, the scanning bed 301 can deliver the imaging calibration component 200 into the imaging device 303, so that the imaging device 303 scans the phantom 100.

[0106] In actual application, the positioning lamp 302 can be installed at the entrance of the imaging device 303. First, the placement position of the placement bracket 201 is positioned at the entrance of the imaging device 303, and the scanning bed 301 then sends the imaging calibration component 200 into the imaging device 303 for calibration scanning.

[0107] Optionally, the positioning light 302 includes a laser light, and the laser light is used to emit a laser beam.

[0108] In this embodiment, when the laser beam emitted by the laser lamp coincides with the horizontal positioning mark 205, the horizontal direction positioning of the placement bracket 201 is completed. When the laser beam emitted by the laser lamp coincides with the vertical positioning mark 206, the vertical direction positioning of the placement bracket 201 is completed. When the laser beam emitted by the laser lamp coincides with both the horizontal positioning mark 205 and the vertical positioning mark 206, the horizontal and vertical directions positioning of the placement bracket 201 are completed.

[0109] In this embodiment, in order to improve the imaging calibration accuracy, the MRI device 300 should avoid the protruding portion 102 of the hollow sphere 101 during the scanning of the phantom 100. In other words, the target placement state of the phantom 100 is the placement state of the phantom 100 when multiple scanning sections do not pass through the protruding portion 102 during the scanning of the phantom 100 by the MRI device 300.

[0110] Exemplary:

[0111] First, the phantom 100 is placed on the placement bracket 201. The hollow sphere 101 is partially embedded in the limiting groove 203 to prevent the hollow sphere 101 from axially moving. Part or all of the protrusion 102 is located in the positioning groove 204 to locate the position of the protrusion 102. Then, the imaging calibration component 200 is placed on the scanning bed 301 of the equipment body 304.

[0112] In this example, the placement bracket 201 includes a horizontal positioning mark 205 and a vertical positioning mark 206. In cooperation with the positioning lamp 302, the light beam emitted by the positioning lamp 302 overlaps with both the horizontal positioning mark 205 and the vertical positioning mark 206, so as to accurately locate the placement position of the placement bracket 201.

[0113] In this example, Figure 7 As shown, the magnetic resonance imaging device 300 scans the phantom 100 in three directions, and the scanning sections during the scanning process are the X section, the Y section, and the Z section. The X section, the Y section, and the Z section do not pass through the protrusion 102. In other words, by limiting the position of the phantom 100 on the placement bracket 201 and limiting the placement position of the imaging calibration component 200 on the scanning bed 301, the position of the protrusion 102 can effectively avoid the scanning section during scanning, that is, the phantom 100 is placed in the target placement state, and the imaging calibration of the magnetic resonance imaging device 300 is realized, thereby improving the calibration accuracy and efficiency and reducing the cost.

[0114] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A phantom for use in imaging calibration of medical imaging equipment, characterized in that: include: The hollow sphere is formed in one piece and defines an inner cavity. The hollow sphere includes a protrusion having a liquid injection port, and the liquid injection port is connected to the inner cavity. The sealing component is arranged on the protruding part and is used for sealing the liquid injection port of the protruding part.

2. The phantom according to claim 1, characterized in that The hollow sphere is integrally formed by rotational molding.

3. The phantom according to claim 1 or 2, characterized in that: The sealing component is detachably arranged on the protruding portion.

4. The phantom according to claim 3, characterized in that The sealing assembly includes: A sealing bolt detachably connected to the protruding portion of the hollow sphere; The sealing ring is arranged between the sealing bolt and the protruding portion.

5. The phantom according to claim 1 or 2, characterized in that: The inner diameter of the hollow sphere ranges from 137.5 mm to 138.5 mm, and the outer diameter of the hollow sphere ranges from 149.5 mm to 150.5 mm.

6. An imaging calibration component, characterized in that: include: Place the bracket; The phantom according to any one of claims 1 to 5, placed on a display stand; The placement bracket includes: Support seat; A limiting groove is arranged on the upper surface of the support seat and is used to limit the hollow sphere; The positioning groove is arranged on the upper surface of the support seat and is connected with the limiting groove, and is used for positioning the protruding part.

7. The imaging calibration assembly according to claim 6, characterized in that: The ratio of the diameter of the notch of the limiting groove to the outer diameter of the hollow sphere is 0.4-0.

8.

8. The imaging calibration assembly according to claim 6, characterized in that: The stand also includes: A transverse positioning mark is provided on the upper surface of the support base and is used to position the bracket in the transverse direction; and / or, The longitudinal positioning mark is arranged on the upper surface of the support seat and is used to position the longitudinal direction of the placement bracket. The positioning direction of the longitudinal positioning mark is perpendicular to the positioning direction of the transverse positioning mark.

9. A magnetic resonance imaging device, characterized in that: include: The device body, including the scanning bed; The imaging calibration assembly as described in claims 6 to 8 is placed on a scanning bed.

10. The magnetic resonance imaging device according to claim 9, characterized in that The placement bracket includes a transverse positioning mark and / or a longitudinal positioning mark, and the magnetic resonance imaging device also includes: A positioning light, which is arranged on the device body; When positioning the imaging calibration component, the direction of the light beam emitted by the positioning light coincides with the horizontal positioning mark and / or the vertical positioning mark.

Images