Upright breast-specific CT imaging device and data acquisition method thereof

Abstract

The present invention discloses an upright breast CT imaging device and a data acquisition method thereof, wherein the upright breast CT imaging device comprises: a bottom base, comprising a bottom base front base and a bottom base rear base; an upper base, located above the bottom base rear base, comprising an upper base front support and an upper base rear base; a rotating arm is installed on one side of the upper base front support, and a first synchronous transmission wheel, an encoder reader base, a slip ring device and a breast traction device are installed on the other side in sequence from bottom to top; a driving motor and a right-angle reducer and a second synchronous transmission wheel are installed on the upper base rear base; a scanning hole bracket is located above the bottom base front base. The upright breast CT imaging device provided by the present invention is small in size and can be continuously rotated 360 degrees. While achieving accurate positioning of the lesion, it greatly reduces the radiation dose.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray imaging, and in particular to an upright breast-specific CT imaging device and a data acquisition method thereof. Background Art

[0002] In recent years, the incidence of breast cancer has been on the rise, but early diagnosis of breast cancer remains a problem that needs to be solved. Studies have shown that the early characteristics of breast cancer are mainly reflected in the appearance of calcification points and tissue damage. If these characteristics are discovered in time and targeted treatment is carried out, breast cancer can be cured.

[0003] At present, early screening for breast cancer is mainly achieved through molybdenum target X-ray imaging equipment. This equipment can only collect two-dimensional images from a limited number of angles. In order to reduce the information overlap of breast tissue and obtain a clearer image, the breast must be pressed. However, pressing the breast with this equipment not only causes pain to the patient, but also the image quality is low, not clear and accurate enough. Other equipment such as breast tomographs, breast ultrasound, magnetic resonance imaging and traditional CT equipment cannot solve the problem of image resolution and X-ray radiation dose.

[0004] Prone breast CT equipment can achieve three-dimensional imaging of the breast and avoid pressing the breast, but it occupies a large space and has a complex equipment structure, which greatly increases the hospital's space costs and radiation protection costs. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above technical problems, an object of the present invention is to provide an upright breast-specific CT imaging device and a data acquisition method thereof, so as to solve at least one of the above problems.

[0007] (II) Technical solution

[0008] According to one aspect of the present invention, there is provided an upright breast-specific CT imaging device, comprising:

[0009] A bottom base, comprising a bottom base front base and a bottom base rear base;

[0010] The upper base is located above the rear base of the bottom base, and includes an upper base front support and an upper base rear base; wherein a rotating arm is installed on one side of the upper base front support, and a first synchronous transmission wheel, an encoder reader base, a slip ring device and a breast traction device are installed on the other side in sequence from bottom to top; a driving motor, a right-angle reducer and a second synchronous transmission wheel are installed on the rear base of the upper base;

[0011] The scanning hole bracket is located above the front base of the bottom base.

[0012] In some embodiments, the slip ring device includes a slip ring and a slip ring bracket; the slip ring includes a slip ring stator and a slip ring rotor; the slip ring bracket is fixed on the encoder read head base; the slip ring is connected to the rotating arm to drive the rotating arm to perform continuous 360-degree rotation.

[0013] In some embodiments, an X-ray source base, a flat-panel detector base and an inverter base are mounted on the rotating arm; an X-ray source, a flat-panel detector and an inverter are mounted on the X-ray source base, the flat-panel detector base and the inverter base respectively; the X-ray source base is used to tilt the X-ray source at a preset angle.

[0014] In some embodiments, anti-roll brackets are respectively provided on both sides of the front base of the bottom base and the rear base of the bottom base; the anti-roll brackets include anti-roll bracket side plates, anti-roll bracket ribs and an anti-roll bracket bottom plate.

[0015] In some embodiments, the encoder read head base includes an encoder read head base base, an encoder read head base support column, and an encoder read head base upper base.

[0016] In some embodiments, the breast traction device is located above the scanning hole bracket and passes through the slip ring device, including a breast traction device bracket, a carbon fiber push rod, a sliding semicircle and a breast suction cup; the sliding semicircle is fixed on the breast suction cup; the carbon fiber push rod is used to push the sliding semicircle and the breast suction cup.

[0017] In some embodiments, the scanning hole support includes a scanning hole, a scanning hole support plate, a scanning hole support rib and a scanning hole support base; the scanning hole support rib and the scanning hole support base are used to fix the scanning hole support plate.

[0018] In some embodiments, a main shaft and a slewing support bearing are also installed on the front support of the upper base; and the carbon fiber push rod of the breast traction device runs through the main shaft and the slewing support bearing.

[0019] In some embodiments, the first synchronous transmission wheel is installed on the main shaft; and a rotating arm adapter, a slip ring adapter and the rotating arm are installed on the slewing support bearing.

[0020] According to another aspect of the invention, a data acquisition method for the CT imaging device as described above is also provided, the method comprising:

[0021] Presetting the rotation speed of the driving motor, the acquisition frame rate of the flat panel detector on the rotating arm, the trigger pulse frequency of the X-ray source, and the tube voltage and tube current of the X-ray source;

[0022] Starting the drive motor;

[0023] After the rotation speed of the driving motor is stabilized, starting the X-ray source;

[0024] Start image acquisition;

[0025] After the image is acquired, the drive motor and the X-ray source are stopped.

[0026] (III) Beneficial effects

[0027] It can be seen from the above technical solutions that the upright breast-specific CT imaging device and data acquisition method provided by the present invention have the following beneficial effects:

[0028] 1. In the present invention, each device is installed in an upright manner, so that its volume is comparable to that of a traditional molybdenum target X-ray diagnostic device, which greatly reduces the volume of a breast three-dimensional imaging device;

[0029] 2. In the present invention, the rotating arm is driven by a slip ring device to rotate continuously 360 degrees, thereby expanding the scanning range and obtaining a high-resolution three-dimensional image of the breast, thereby accurately locating the lesion and providing accurate image guidance for the next step of pathological biopsy puncture;

[0030] 3. In the present invention, by presetting the flat panel detector to collect data such as frame rate, X-ray source trigger pulse frequency, X-ray source tube voltage and tube current, and placing the X-ray source at a preset angle, the X-ray radiation dose can be well controlled, which greatly reduces the radiation dose received by the patient and has a good application prospect;

[0031] 4. The present invention uses an upright plus slip ring design to build an upright breast-specific CT research platform, intends to carry out relevant imaging research, accelerate the transformation of the research platform from scientific research to clinical application, and contribute to the early screening of breast cancer. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A front view of the structure of an upright breast-specific CT imaging device provided by an embodiment of the present invention;

[0034] Figure 2A rear view of the structure of an upright breast-specific CT imaging device provided by an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the structure of a scanning hole bracket provided in an embodiment of the present invention;

[0036] Figure 4 A schematic diagram of the structure of an anti-roll bracket provided in an embodiment of the present invention;

[0037] Figure 5 A schematic diagram of the structure of a rotating arm provided in an embodiment of the present invention;

[0038] Figure 6 A schematic diagram of the structure of an X-ray source base provided by an embodiment of the present invention;

[0039] Figure 7 A schematic diagram of the structure of a slip ring device provided in an embodiment of the present invention;

[0040] Figure 8 A schematic diagram of the structure of a breast traction device provided by an embodiment of the present invention;

[0041] Fig. 9 A schematic diagram of the structure of an encoder reader base provided by an embodiment of the present invention;

[0042] Fig.10 is a schematic diagram of the structure of the main shaft and the slewing support bearing;

[0043] Fig.11 The embodiment of the present invention provides Figure 1 and Figure 2 A flow chart of a data acquisition method for a CT imaging device is shown.

[0044] In the above drawings, the meanings of the reference numerals are as follows:

[0045] 11- bottom base front base;

[0046] 110- scanning hole bracket;

[0047] 111- scanning hole; 112- scanning hole support plate;

[0048] 113- scanning hole support rib; 114- scanning hole support base;

[0049] 12- bottom base rear base;

[0050] 120-Anti-roll bracket

[0051] 121-anti-roll bracket side plate; 122-anti-roll bracket rib; 123-anti-roll bracket bottom plate;

[0052] 21 - upper base rear base;

[0053] 210-driving motor, 211-right angle reducer; 212-second synchronous transmission wheel;

[0054] 22-upper base front support;

[0055] 221 - rotating arm;

[0056] 2210-X-ray source base;

[0057] 22101-X-ray source base bottom sliding plate;

[0058] 22102-X-ray source base upper sliding plate;

[0059] 22103-X-ray source base inclined support;

[0060] 22104-X-ray source base slope;

[0061] 22105-X-ray source light exit hole;

[0062] 22106-X-ray source top cover;

[0063] 22107-X-ray source top cover adapter;

[0064] 2211- flat panel detector base; 2212- inverter base; 2213- X-ray source;

[0065] 2214- flat panel detector; 2215- inverter;

[0066] 222-first synchronous transmission wheel;

[0067] 223- encoder reader base;

[0068] 2230- encoder reader base base; 2231- encoder reader base support column; 2232- encoder reader base upper base;

[0069] 224-slip ring device;

[0070] 2240-slip ring; 2241-slip ring bracket; 2242-slip ring stator; 2243-slip ring rotor;

[0071] 225-Breast traction device;

[0072] 2250-breast traction device bracket; 2251-carbon fiber push rod; 2252-sliding semicircle; 2253-breast suction cup.

[0073] 226-spindle;

[0074] 227-slewing bearing;

[0075] 2271 - slewing support - swivel arm adapter; 2272 - swivel arm - slip ring adapter. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0077] An upright breast CT imaging device and a data acquisition method thereof provided in an embodiment of the present invention can solve the technical problems existing in the prior art that the device is large in size, the image resolution is low, and a more accurate lesion location cannot be obtained, and the radiation dose of X-rays cannot be controlled, causing the patient to receive excessive radiation dose. The device can achieve accurate lesion location through high-quality three-dimensional images on the basis of small device size and low radiation exposure to the patient, thereby providing a more accurate image guidance technical effect for pathological biopsy puncture.

[0078] To facilitate understanding of this embodiment, firstly, a vertical breast CT imaging device provided by an embodiment of the present invention is described in detail. Figure 1 and Figure 2 As shown, the device includes:

[0079] A bottom base, comprising a bottom base front base 11 and a bottom base rear base 12;

[0080] An upper base, comprising an upper base front support 22 and an upper base rear base 21;

[0081] Among them, a rotating arm 221 is installed on one side of the upper base front support 22, and a first synchronous transmission wheel 222, an encoder reader base 223, a slip ring device 224 and a breast traction device 225 are installed on the other side from bottom to top; a driving motor 210, a right-angle reducer 211 and a second synchronous transmission wheel 212 are installed on the upper base rear base 21.

[0082] Preferably, the length of the synchronous belt connecting the first synchronous transmission wheel 222 and the second synchronous transmission wheel 212 is 1104 mm.

[0083] In this embodiment, a scanning hole bracket 110 is installed on the bottom base front base 11. Figure 3 As shown, the scanning hole support 110 includes a scanning hole 111 , a scanning hole support plate 112 , a scanning hole support rib 113 and a scanning hole support base 114 .

[0084] Preferably, the diameter of the scanning hole 111 is 220 mm.

[0085] Anti-roll brackets 120 are provided on both sides of the bottom base front base 11 and the bottom base rear base 12; Figure 4 The structure diagram of the anti-roll bracket 120 is shown, including an anti-roll bracket side plate 121, an anti-roll bracket rib 122 and an anti-roll bracket bottom plate 123. By fixing the bottom base with the anti-roll bracket 120, the CT imaging device can be stably placed on the ground, and the device does not shake when the rotating arm rotates.

[0086] like Figure 5 As shown, an X-ray source base 2210, a flat panel detector base 2211 and an inverter base 2212 are installed on the rotating arm 221 provided in the embodiment of the present invention; an X-ray source 2213, a flat panel detector 2214 and an inverter 2215 are installed on the X-ray source base 2210, the flat panel detector base 2211 and the inverter base 2212 respectively. Among them, the flat panel detector 2214 is used to detect the breast for image acquisition, the inverter 2215 is used to transmit current to the X-ray source, and the X-ray source base 2210 tilts the X-ray source 2213 at a preset angle. By presetting the angle between the X-ray source base 2210 and the X-ray source 2213, the acquisition frame rate of the flat panel detector 2214, and the trigger pulse frequency, tube voltage and tube current of the X-ray source 2213, the radiation dose of the X-ray can be well controlled to reduce the radiation borne by the patient.

[0087] Preferably, the distance between the focus of the X-ray source 2213 and the rotation center is 462 mm.

[0088] Preferably, the distance between the flat panel detector 2214 and the rotation center is 100 mm.

[0089] like Figure 6 As shown, the X-ray source base 2210 includes an X-ray source 2213, a bottom sliding plate 22101 of the X-ray source base, an upper sliding plate 22102 of the X-ray source base, an X-ray source base inclined support 22103, an X-ray source base inclined surface 22104, an X-ray source light exit hole 22105, an X-ray source top cover plate 22106 and an X-ray source top cover plate adapter 22107.

[0090] Preferably, the included angle between the upper sliding plate 22102 of the X-ray source base and the rotating arm 221 is 11.46 degrees.

[0091] In this embodiment, the structure of the slip ring device 224 is as follows: Figure 7 As shown, it includes a slip ring 2240 and a slip ring bracket 2241; the slip ring 2240 includes a slip ring stator 2242 and a slip ring rotor 2243. The slip ring device 224 is connected to the rotating arm 221, and is used to drive the rotating arm 221 to rotate 360 ​​degrees continuously, so as to obtain a larger scanning range of the breast, thereby obtaining a high-quality three-dimensional image of the breast.

[0092] In this embodiment, if Figure 8 As shown, the breast traction device 225 includes a breast traction device bracket 2250, a carbon fiber push rod 2251, a sliding semicircle 2252 and a breast suction cup 2253. The sliding semicircle 2252 is fixed on the breast suction cup 2253, and the carbon fiber push rod 2251 is used to push and pull the breast suction cup 2253 and the sliding semicircle 2252.

[0093] The breast traction device 225 and the scanning hole bracket 110 should be used in conjunction with each other. The patient places the breast in the scanning hole 111. The breast traction device 225 is responsible for stretching the breast so that the breast suction cup 2253 is aligned with the patient's nipple and fits tightly against the breast. The vacuum motor is started, and the breast suction cup 2253 generates suction to firmly hold the breast. Then, the electric switch of the breast traction device 225 is pressed to adjust the length of the carbon fiber push rod 2251 so that the breast can be as deep as possible into the scanning hole 111.

[0094] like Fig. 9 As shown, in this embodiment, the encoder head base 223 includes an encoder head base base 2230, an encoder head base support column 2231 and an encoder head base upper base 2232.

[0095] In this embodiment, the slip ring bracket 2241 is installed on the encoder head base 223 .

[0096] like Fig.10 As shown, in this embodiment, a main shaft 226 and a slewing support bearing 227 are also installed on the upper base front support 22; a first synchronous transmission wheel 222 is installed on the main shaft 226; a slewing support-slewing arm adapter 2271 and a slewing arm-slip ring adapter 2272, as well as the slewing arm 221 are installed on the slewing support bearing 227.

[0097] The breast pulling device 225 passes through the sliding ring device 224 and the slewing support bearing 227 .

[0098] The upright breast CT imaging device provided in the embodiment of the present invention has a small size, high image quality, and low radiation dose, and can achieve accurate positioning of lesions, providing more accurate image guidance for the next step of pathological biopsy puncture.

[0099] As one aspect of the present invention, a data acquisition method for an upright breast-specific CT imaging device is provided, such as Fig.11 As shown, the method comprises the following steps:

[0100] Step S101, presetting the driving motor speed, the acquisition frame rate of the flat panel detector on the rotating arm, the trigger pulse frequency of the X-ray source, and the X-ray source tube voltage and tube current.

[0101] Step S102, starting the driving motor.

[0102] Step S103, after the rotation speed of the driving motor is stabilized, the X-ray source is started to emit X-rays according to preset data.

[0103] Step S104, start image acquisition.

[0104] Step S105, after acquiring the frame image, stop driving the motor and the X-ray source.

[0105] It can be seen from the above technical solutions that the upright breast CT imaging device and data acquisition method provided by the present invention have the following beneficial effects:

[0106] 1. In the present invention, each device is installed in an upright manner, so that its volume is comparable to that of a traditional molybdenum target X-ray diagnostic device, which greatly reduces the volume of a breast three-dimensional imaging device;

[0107] 2. In the present invention, the rotating arm is driven by a slip ring device to rotate 360 ​​degrees continuously, thereby expanding the scanning range and obtaining a high-resolution three-dimensional image of the breast, thereby accurately locating the lesion and providing accurate image guidance for the next step of pathological biopsy puncture;

[0108] 3. In the present invention, by presetting the flat panel detector to collect data such as frame rate, X-ray source trigger pulse frequency, X-ray source tube voltage and tube current, and placing the X-ray source at a preset angle, the X-ray radiation dose can be well controlled, which greatly reduces the radiation dose received by the patient and has a good application prospect;

[0109] 4. The present invention uses an upright plus slip ring design to build an upright breast-specific CT research platform, intends to carry out relevant imaging research, accelerate the transformation of the research platform from scientific research to clinical application, and contribute to the early screening of breast cancer.

[0110] It should also be noted that, throughout the drawings, conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present invention. The shapes and sizes of the components in the drawings do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present invention. In addition, in the claims, any reference symbol between brackets shall not be construed as a limitation to the claims.

[0111] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The ordinal numbers used in the specification and claims, such as "first", "second", "third", etc., to modify the corresponding elements, do not themselves mean that the elements have any ordinal numbers, nor do they represent the order of one element to another element, or the order in the manufacturing method. The use of these ordinals is only used to make a clear distinction between an element with a certain name and another element with the same name.

[0112] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An upright breast-specific CT imaging device, characterized in that: include: A bottom base, comprising a bottom base front base and a bottom base rear base; The upper base is located above the rear base of the bottom base, and includes an upper base front support and an upper base rear base; wherein a rotating arm is installed on one side of the upper base front support, and a first synchronous transmission wheel, an encoder reader base, a slip ring device and a breast traction device are installed on the other side in sequence from bottom to top; a driving motor, a right-angle reducer and a second synchronous transmission wheel are installed on the rear base of the upper base; A scanning hole bracket, located above the front base of the bottom base; An X-ray source base and a flat panel detector base are mounted on the rotating arm, an X-ray source and a flat panel detector are mounted on the X-ray source base and the flat panel detector base, respectively, and the X-ray source base is used to tilt the X-ray source on the rotating arm so that the emission direction of X-rays from the X-ray source is deflected toward a direction close to the rotating arm; The distance between the X-ray source focus and the rotation center is 462 mm; The distance between the flat panel detector and the rotation center is 100 mm; The X-ray source base comprises an X-ray source, a bottom sliding plate of the X-ray source base, an upper sliding plate of the X-ray source base, an X-ray source base inclined support, an X-ray source base inclined surface, an X-ray source light exit hole, an X-ray source top cover plate and an X-ray source top cover plate adapter; The included angle between the upper sliding plate of the X-ray source base and the rotating arm is 11.46 degrees; The slip ring device comprises a slip ring, which is connected to the rotating arm and is used to drive the rotating arm to perform continuous 360-degree rotation.

2. The upright breast CT imaging device according to claim 1, characterized in that: The slip ring device also includes a slip ring bracket; the slip ring includes a slip ring stator and a slip ring rotor; the slip ring bracket is fixed on the encoder head base.

3. The upright breast CT imaging device according to claim 1, characterized in that: An inverter base is also installed on the rotating arm; an inverter is installed on the inverter base.

4. The upright breast CT imaging device according to claim 1, characterized in that: Anti-roll brackets are respectively arranged on both sides of the front base of the bottom base and the rear base of the bottom base; the anti-roll brackets include anti-roll bracket side plates, anti-roll bracket ribs and an anti-roll bracket bottom plate.

5. The upright breast CT imaging device according to claim 1, characterized in that: The encoder head base includes an encoder head base base, an encoder head base support column and an encoder head base upper base.

6. The upright breast CT imaging device according to claim 1, characterized in that: The breast traction device is located above the scanning hole bracket and passes through the slip ring device, including a breast traction device bracket, a carbon fiber push rod, a sliding semicircle and a breast suction cup; the sliding semicircle is fixed on the breast suction cup; the carbon fiber push rod is used to push and pull the sliding semicircle and the breast suction cup.

7. The upright breast CT imaging device according to claim 1, characterized in that: The scanning hole support comprises a scanning hole, a scanning hole support plate, a scanning hole support rib and a scanning hole support base; the scanning hole support rib and the scanning hole support base are used to fix the scanning hole support plate.

8. The upright breast CT imaging device according to claim 1, characterized in that: A main shaft and a slewing support bearing are also installed on the front support of the upper base; the carbon fiber push rod of the breast traction device penetrates the main shaft and the slewing support bearing.

9. The upright breast CT imaging device according to claim 8, characterized in that: The first synchronous transmission wheel is installed on the main shaft; and a rotating arm adapter, a slip ring adapter and the rotating arm are installed on the slewing support bearing.

10. A data acquisition method for a CT imaging device according to any one of claims 1 to 9, characterized in that: The method comprises: Presetting the rotation speed of the driving motor, the acquisition frame rate of the flat panel detector on the rotating arm, the trigger pulse frequency of the X-ray source, and the tube voltage and tube current of the X-ray source; Starting the drive motor; After the rotation speed of the driving motor is stabilized, starting the X-ray source; Start image acquisition; After the image is acquired, the drive motor and the X-ray source are stopped.

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