CN114886448A - CBCT equipment of area self-shielding - Google Patents
CBCT equipment of area self-shielding Download PDFInfo
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- CN114886448A CN114886448A CN202210435802.XA CN202210435802A CN114886448A CN 114886448 A CN114886448 A CN 114886448A CN 202210435802 A CN202210435802 A CN 202210435802A CN 114886448 A CN114886448 A CN 114886448A
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- 238000007408 cone-beam computed tomography Methods 0.000 title claims abstract description 45
- 230000009471 action Effects 0.000 claims abstract description 4
- 239000005355 lead glass Substances 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 5
- 229910000978 Pb alloy Inorganic materials 0.000 claims description 3
- 229910001080 W alloy Inorganic materials 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 8
- 230000002238 attenuated effect Effects 0.000 abstract description 5
- 238000004846 x-ray emission Methods 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 description 5
- 206010009244 Claustrophobia Diseases 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 208000019899 phobic disease Diseases 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/10—Application or adaptation of safety means
- A61B6/107—Protection against radiation, e.g. shielding
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- A61B6/51—
Abstract
The invention provides a CBCT device with self-shielding, comprising: the scanning device comprises a rack, a scanning assembly, a front side shielding door and a control console, wherein the rack comprises a top plate, a bottom plate, a left side plate, a right side plate and a rear side plate, and the inner side surfaces of the rack are provided with shielding layers; the scanning assembly is arranged in the rack and comprises an X-ray generator, a detector, a connecting arm and a rotating device, and the rotating device drives the connecting arm to rotate to drive the X-ray generator and the detector to rotate; the closed state of the front side shielding door enables the frame to form a closed structure; the console is used for controlling the action of the scanning assembly and the opening and closing of the front shielding door. The fully-coated shielding layer is arranged around the frame, so that an additional lead protection facility is not needed, the construction period of a department is greatly shortened, and the cost is effectively reduced; the shielding layers and the front side shielding door are overlapped, so that the X-ray emission is effectively attenuated; the control console is arranged on the CBCT equipment, an additional operation room is not needed, and the doctor can conveniently communicate with the patient in a short distance.
Description
Technical Field
The invention belongs to the field of oral imaging equipment, and particularly relates to CBCT equipment with self-shielding.
Background
CBCT is a short name of Cone beam CT, i.e. Cone beam CT, and as the name suggests, is a Cone beam projection computer reconstruction tomographic imaging apparatus, which is based on the principle that an X-ray generator makes an annular DR (digital projection) around a projection body with a lower dose of radiation (usually, a bulb current is about 10 ma), and then data obtained in an "intersection" after digital projection is performed multiple times (180 times to 360 times, which varies depending on products) around the projection body are "reconstructed" in a computer to obtain a three-dimensional image.
The traditional oral cavity CBCT (Cone beam CT for short, namely Cone beam CT) equipment comprises a rack, a scanning component and a patient support, wherein the rack does not comprise a common X-ray shielding layer, a large unshielded space exists, X-ray shielding measures are not available, the risk of radiation to other personnel except the patient is extremely high, and especially, a large amount of stray rays generated when radioactive rays pass through the skull of a human body aggravate radiation hazard. Under the general condition, the special CBCT lead house of customization is required to shield radiation, and lead house keeps apart into two different regions with doctor and patient, and during normal scanning, the patient is in scanning room (lead house), and the doctor is in the control cabinet (having placed), leads to the interchange between doctor and the patient to need through making a video recording and long-range intercom system, and it is unchangeable to cause for doctor operation and timely error correction (the image artifact that the patient suddenly moved and cause etc.) like this, and cost such as time, manpower, material resources are higher.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a CBCT apparatus with self-shielding, which is used to solve the problems in the prior art that a CBCT lead room needs to be customized specially to shield radiation, resulting in high costs of time, labor and material resources and inconvenient operation and communication between doctors and patients.
To achieve the above and other related objects, the present invention provides a CBCT apparatus with self-shielding, comprising:
the shielding device comprises a rack, a supporting frame and a shielding layer, wherein the rack comprises a top plate, a bottom plate, a left side plate, a right side plate and a rear side plate, the top plate and the bottom plate are arranged oppositely, the left side plate and the right side plate are arranged oppositely, the rear side plate is positioned between the left side plate and the right side plate, and the inner side surfaces of the top plate, the bottom plate, the left side plate, the right side plate and the rear side plate are all provided with shielding layers;
the scanning assembly is arranged in the rack and comprises an X-ray generator, a detector, a connecting arm and a rotating device, wherein the X-ray generator is arranged at one end of the connecting arm, the detector is arranged at the other end of the connecting arm, and the X-ray generator and the detector are arranged oppositely; one end of the rotating device is fixedly connected to the middle position of the connecting arm, the other end of the rotating device is installed on the top plate, and the rotating device drives the connecting arm to rotate so as to drive the X-ray generator and the detector to rotate;
the front side shielding door is positioned at the opposite position of the rear side plate, and the closed state of the front side shielding door enables the machine frame to be enclosed into a closed structure;
the console is arranged on the left side plate or the right side plate, the input end of the console is electrically connected with the scanning assembly and the front side shielding door, the output end of the console is connected with a computer through a cable, and the console is used for controlling the action of the scanning assembly and controlling the opening and closing of the front side shielding door.
Preferably, the top plate and the bottom plate are provided with a rotary structure, and the front shielding door is installed between the top plate and the bottom plate through the rotary structure and is opened and closed around a rotary shaft of the rotary structure.
Preferably, the front-side shielding door is a lead glass door.
Preferably, each of the shielding layers is adhered to the inner sides of the top plate, the bottom plate, the left side plate, the right side plate and the rear side plate, and the shielding layers are connected in a stacked and overlapped manner.
Preferably, the shielding layers on the inner sides of the top plate, the bottom plate, the left side plate and the right side plate are in overlapped lap joint with the front side shielding door.
Preferably, the shielding layer is one or a combination of a lead plate, a lead alloy plate, a tungsten alloy plate, lead glass and a lead curtain.
Preferably, the shielding layers are all lead plate shielding layers.
Preferably, the console comprises a human-computer interaction window, an operation button, an intercom system and an emergency stop button.
Preferably, the CBCT apparatus further includes a seat, the seat is disposed below the scanning assembly and is mounted on the bottom plate through an automatic height adjusting mechanism, and the automatic height adjusting mechanism is configured to adjust a height of the seat.
Preferably, the left side plate, the right side plate and the rear side plate are all provided with windows, and the windows are all lead glass windows.
As described above, the CBCT apparatus with self-shielding of the present invention has the following advantages:
the CBCT equipment comprises a rack, a scanning assembly, a front side shielding door and a control console, wherein a fully-coated shielding layer is arranged around the rack, so that extra lead protection facilities (a lead room, a lead coat, a lead screen and the like) are not needed, the construction period of a department is greatly shortened, and the cost is effectively reduced; the mutual splicing parts of the shielding layers and the front side shielding door are in overlapped lap joint, so that the X-ray emission quantity is effectively attenuated, and the dose equivalent rate of the periphery at a position 100cm away from the surface of the CBCT equipment is not more than 2.5 mu Sv/h; the front side shielding door is arranged to be an openable door structure, the front side shielding door is opened to facilitate the patient to come in and go out, and the front side shielding door can be used for normal scanning when closed; the control console is arranged on the CBCT equipment, so that corresponding control instructions can be completed on the side of the equipment without an additional operation room, a doctor can conveniently communicate with a patient at a short distance, the occupied space is saved, and the construction cost is further reduced; simultaneously, all be provided with the lead glass window on left side board, right side board and posterior lateral plate, and still be provided with the front side shield door with the relative position of posterior lateral plate, the front side shield door is the lead glass door, increases daylighting and vision extension distance, can reduce the sense of fear of patient claustrophobia, further makes things convenient for the doctor to observe.
Drawings
Fig. 1 is a schematic perspective view of a first viewing angle of a CBCT apparatus with a self-shielding in embodiment 1 when a front shielding door is opened.
Fig. 2 is a schematic perspective view of a second viewing angle of the CBCT apparatus with self-shielding in embodiment 1, showing the front-side shielding door in an open state.
Fig. 3 is a schematic perspective view of a first viewing angle of a CBCT apparatus with self-shielding in embodiment 1, with the front shielding door closed.
Fig. 4 is a schematic plan view of a CBCT apparatus with self-shielding in embodiment 1 of the present invention.
Fig. 5 is a schematic view of a partial cross-sectional structure taken along a-a in fig. 4.
Fig. 6 is a partial sectional structural view along B-B in fig. 4.
Fig. 7 is a schematic view of a first visual perspective structure of a CBCT apparatus with self-shielding according to embodiment 2 of the present invention.
Fig. 8 is a schematic view of a second visual perspective structure of a CBCT apparatus with self-shielding in embodiment 2 of the present invention.
Description of the element reference numerals
100X-ray
200 rack
201 Top plate
202 bottom plate
203 left side plate
204 right side plate
205 rear side panel
206 front side shielding door
300 shield layer
400 scanning assembly
500 control desk
2031. 2051 lead glass window
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention.
Please refer to fig. 1 to 8. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The CBCT equipment comprises a rack, a scanning assembly, a front side shielding door and a control console, wherein a fully-coated shielding layer is arranged around the rack, so that extra lead protection facilities (a lead room, a lead coat, a lead screen and the like) are not needed, the construction period of a department is greatly shortened, and the cost is effectively reduced; the mutual splicing parts of the shielding layers and the front side shielding door are in overlapped lap joint, so that the X-ray emission quantity is effectively attenuated, and the dose equivalent rate of the periphery at a position 100cm away from the surface of the CBCT equipment is not more than 2.5 mu Sv/h; the front side shielding door is arranged to be an openable door structure, the front side shielding door is opened to facilitate the patient to come in and go out, and the front side shielding door can be used for normal scanning when closed; the control console is arranged on the CBCT equipment, so that corresponding control instructions can be completed on the side of the equipment without an additional operation room, a doctor can conveniently communicate with a patient at a short distance, the occupied space is saved, and the construction cost is further reduced; simultaneously, all be provided with the lead glass window on left side board, right side board and posterior lateral plate, and still be provided with the front side shield door with the relative position of posterior lateral plate, the front side shield door is the lead glass door, increases daylighting and vision extension distance, can reduce the sense of fear of patient claustrophobia, further makes things convenient for the doctor to observe.
Example 1
Referring to fig. 1 to 6, the present invention provides a CBCT apparatus with self-shielding, including: the scanning device comprises a rack 200, a scanning assembly 400, a front shielding door 206 and a console 500, wherein the rack 200 comprises a top plate 201, a bottom plate 202, a left side plate 203, a right side plate 204 and a back side plate 205, the top plate 201 and the bottom plate 202 are oppositely arranged, the left side plate 203 and the right side plate 204 are oppositely arranged, the back side plate 205 is positioned between the left side plate 203 and the right side plate 204, and shielding layers 300 are arranged on the inner side surfaces of the top plate 201, the bottom plate 202, the left side plate 203, the right side plate 204 and the back side plate 205; the scanning assembly 400 is disposed inside the frame 200 and includes an X-ray generator, a detector, a connecting arm and a rotating device, the X-ray generator is mounted at one end of the connecting arm, the detector is mounted at the other end of the connecting arm, and the X-ray generator and the detector are disposed opposite to each other; one end of the rotating device is fixedly connected to the middle position of the connecting arm, the other end of the rotating device is installed on the top plate 201, and the rotating device drives the connecting arm to rotate so as to drive the X-ray generator and the detector to rotate; the front side shielding door 206 is positioned at the opposite position of the rear side plate 205, and the closed state of the front side shielding door 206 leads the machine frame 200 to enclose into a closed structure; the console 500 is disposed on the left side plate 203 or the right side plate 204, an input end of the console 500 is electrically connected to the scanning assembly 400 and the front side shielding door 206, an output end of the console is connected to a computer through a cable, and the console 500 is used for controlling the movement of the scanning assembly 400 and the opening and closing of the front side shielding door 206.
Illustratively, a pivoting structure is provided on each of the top plate 201 and the bottom plate 202 to face each other, and the front side shielding door 206 is installed between the top plate 201 and the bottom plate 202 through the pivoting structure and is opened and closed around a pivoting axis of the pivoting structure.
Specifically, it is preferable that the front side shielding door 206 has a semicircular door structure, wherein the revolving structure is a relatively rotatable structure, for example, the revolving structure may be an arc-shaped guide rail or a bearing, but the specific structural form of the revolving structure is not limited herein, and the front side shielding door 206 may be a sliding type or a push-pull type opening and closing structure, which can meet the requirements of opening and closing back and forth; in addition, in another embodiment, the front-side shielding door 206 is electrically connected to the console 500, the opening and closing of the front-side shielding door 206 are controlled by the console 500, the front-side shielding door 206 is opened to facilitate the patient to enter and exit, and the front-side shielding door 206 can be scanned normally when closed.
The front-side shielding door 206 is, by way of example, a lead glass door.
In particular, the lead glass door may increase the lighting and visual effects of the device, and at the same time the lead material may be able to effectively shield the X-rays 100, particularly with respect to the thickness of the lead glass door, which is not overly limited herein.
As an example, the shield layers 300 are all stuck to the inner sides of the top plate 201, the bottom plate 202, the left side plate 203, the right side plate 204, and the rear side plate 205, and the shield layers 300 are laminated and connected to each other.
As an example, the shielding layers 300 inside the top plate 201, the bottom plate 202, the left side plate 203, and the right side plate 204 are stacked and lap-joined with the front side shielding door 206.
Specifically, the overlapping is a connection mode of connecting the connected components, parts or plates to each other in an overlapping manner, referring to fig. 5 and 6, an overlapping surface is provided at the mutual splicing position between the shielding layer 300 on the inner side of the top plate 201 and the front side shielding door 206, an overlapping surface is also provided between the shielding layer 300 of the left side plate 203 and the front side shielding door 206, and the shielding layer 300 between the two surfaces is in overlapping connection, so that a complete self-shielding structure is formed, the emission amount of the X-rays 100 can be effectively attenuated, and the leakage of the X-rays can be prevented.
In other embodiments, a labyrinth structure may also be disposed between the shielding layer 300 inside the top plate 201, the bottom plate 202, the left side plate 203, and the right side plate 204 and the front side shielding door 206, that is, multiple layers of curved shielding layers 300 are disposed between the shielding layer 300 and the front side shielding door 206 for overlapping, so as to better prevent the X-ray 100 from leaking out, but regarding a specific structural form of the labyrinth structure, different types of labyrinth structures may be disposed, which is not limited herein.
As an example, the shielding layer 300 is one or a combination of a lead plate, a lead alloy plate, a tungsten alloy plate, lead glass, and a lead curtain.
As an example, the shielding layers 300 are all lead plate shielding layers 300.
Specifically, the lead plate shielding layer 300 attached to the inner sides of the top plate 201, the bottom plate 202, the left side plate 203, the right side plate 204 and the rear side plate 205 and the lead glass door of the front side shielding door 206 form a self-shielding structure of the CBCT apparatus, so that extra lead room protection is not needed, links such as lead room construction and environmental evaluation are reduced, and time, labor and material cost are effectively saved.
In addition, regarding the thickness of the shielding layer 300, without being limited excessively, the thickness of the shielding layer 300 is set in relation to the power of the X-ray source, and it is only necessary to ensure that the dose equivalent rate around a position 100cm away from the surface of the CBCT apparatus is not more than 2.5 μ Sv/h.
By way of example, the console 500 includes a human-computer interaction window, operating buttons, an intercom system, and an emergency stop button.
Specifically, when an improper operation occurs inside the CNCT apparatus or a bad influence is given to the patient, the actions of the scanning unit 400, the front side shutter 206, and the like are urgently braked by the emergency stop button.
By way of example, the CBCT apparatus further includes a seat disposed below the scanning assembly 400 and mounted on the floor 202 via an automatic height adjustment mechanism for adjusting the height of the seat.
Example 2
Referring to fig. 7 and 8, the present invention provides a CBCT apparatus with self-shielding, which is different from embodiment 1 in that: the left side plate 203, the right side plate 204 and the rear side plate 205 are all provided with windows, and the windows are lead glass windows (including a lead glass window 2031 on the left side plate, a lead glass window on the right side plate and a lead glass window 2051 on the rear side plate). The rest of the structure is the same as that in embodiment 1, and is not described again here.
Specifically, all be provided with the lead glass window on left side board 203, right side board 204 and posterior lateral plate 205, and still be provided with front side shield door 206 with the relative position of posterior lateral plate 205, front side shield door 206 is the lead glass door, increases daylighting and vision extension distance, can reduce the sense of fear of patient claustrophobia, further makes things convenient for the doctor to observe.
In conclusion, the CBCT equipment comprises a rack, a scanning assembly, a front shielding door and a console, wherein the periphery of the rack is provided with a fully-coated shielding layer, so that extra lead protection facilities (a lead room, a lead coat, a lead screen and the like) are not needed, the construction period of a department is greatly shortened, and the cost is effectively reduced; the mutual splicing parts of the shielding layers and the front side shielding door are in overlapped lap joint, so that the X-ray emission quantity is effectively attenuated, and the dose equivalent rate of the periphery at a position 100cm away from the surface of the CBCT equipment is not more than 2.5 mu Sv/h; the front side shielding door is arranged to be an openable door structure, the front side shielding door is opened to facilitate the patient to come in and go out, and the front side shielding door can be used for normal scanning when closed; the control console is arranged on the CBCT equipment, so that corresponding control instructions can be completed on the side of the equipment without an additional operation room, a doctor can conveniently communicate with a patient at a short distance, the occupied space is saved, and the construction cost is further reduced; simultaneously, all be provided with the lead glass window on left side board, right side board and posterior lateral plate, and still be provided with the front side shield door with the relative position of posterior lateral plate, the front side shield door is the lead glass door, increases daylighting and vision extension distance, can reduce the sense of fear of patient claustrophobia, further makes things convenient for the doctor to observe. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A CBCT apparatus with self-shielding, the CBCT apparatus comprising:
the shielding device comprises a rack, a supporting frame and a shielding layer, wherein the rack comprises a top plate, a bottom plate, a left side plate, a right side plate and a rear side plate, the top plate and the bottom plate are arranged oppositely, the left side plate and the right side plate are arranged oppositely, the rear side plate is positioned between the left side plate and the right side plate, and the inner side surfaces of the top plate, the bottom plate, the left side plate, the right side plate and the rear side plate are all provided with shielding layers;
the scanning assembly is arranged in the rack and comprises an X-ray generator, a detector, a connecting arm and a rotating device, wherein the X-ray generator is arranged at one end of the connecting arm, the detector is arranged at the other end of the connecting arm, and the X-ray generator and the detector are arranged oppositely; one end of the rotating device is fixedly connected to the middle position of the connecting arm, the other end of the rotating device is installed on the top plate, and the rotating device drives the connecting arm to rotate so as to drive the X-ray generator and the detector to rotate;
the front side shielding door is positioned at the opposite position of the rear side plate, and the closed state of the front side shielding door enables the machine frame to be enclosed into a closed structure;
the console is arranged on the left side plate or the right side plate, the input end of the console is electrically connected with the scanning assembly and the front side shielding door, the output end of the console is connected with a computer through a cable, and the console is used for controlling the action of the scanning assembly and controlling the opening and closing of the front side shielding door.
2. The CBCT apparatus with self-shielding of claim 1, wherein: the front side shielding door is arranged between the top plate and the bottom plate through the rotary structure and is opened and closed around a rotary shaft of the rotary structure.
3. The CBCT apparatus with self-shielding of claim 1, wherein: the front side shielding door is a lead glass door.
4. The CBCT apparatus with self-shielding of claim 1, wherein: each shielding layer is pasted on the inner sides of the top plate, the bottom plate, the left side plate, the right side plate and the rear side plate, and the shielding layers are connected in a stacked and overlapped mode.
5. The CBCT apparatus with self-shielding of claim 1, wherein: the shielding layers on the inner sides of the top plate, the bottom plate, the left side plate and the right side plate are in overlapped lap joint with the front side shielding door.
6. The CBCT apparatus with self-shielding of claim 1, wherein: the shielding layer is one or a combination of a lead plate, a lead alloy plate, a tungsten alloy plate, lead glass and a lead curtain.
7. The CBCT apparatus with self-shielding of claim 6, wherein: the shielding layers are lead plate shielding layers.
8. The CBCT apparatus with self-shielding of claim 1, wherein: the console comprises a man-machine interaction window, an operation button, an intercom system and an emergency stop button.
9. The CBCT apparatus with self-shielding of claim 1, wherein: the CBCT equipment further comprises a seat, wherein the seat is arranged below the scanning assembly and is installed on the bottom plate through an automatic height adjusting mechanism, and the automatic height adjusting mechanism is used for adjusting the height of the seat.
10. The CBCT apparatus with self-shielding of claim 1, wherein: the window is formed in each of the left side plate, the right side plate and the rear side plate, and the window is a lead glass window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435802.XA CN114886448A (en) | 2022-04-24 | 2022-04-24 | CBCT equipment of area self-shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435802.XA CN114886448A (en) | 2022-04-24 | 2022-04-24 | CBCT equipment of area self-shielding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114886448A true CN114886448A (en) | 2022-08-12 |
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ID=82717354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210435802.XA Pending CN114886448A (en) | 2022-04-24 | 2022-04-24 | CBCT equipment of area self-shielding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114886448A (en) |
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2022
- 2022-04-24 CN CN202210435802.XA patent/CN114886448A/en active Pending
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