KR102370757B1 - Dental x-ray imaging system - Google Patents

Abstract

According to an embodiment of the present invention, a dental X-ray system comprises: an X-ray source device configured to emit an X-ray radiation in a predetermined direction in which a target object is located; an X-ray detection device configured to obtain a plurality of image frames by detecting the X-ray radiation emitted to the target object; a body frame coupled to the X-ray source device and the X-ray detection device; a laser sensor unit disposed on one side of the X-ray source device to measure a head shape separation length between the target object and the X-ray source device based on a first effective section from the X-ray source device to a chin support; and a control device configured to adjust an X-ray radiation amount through the X-ray source device based on the head shape separation length. When the head shape separation length is a second effective section corresponding to 30% of the first effective section, the control device reduces the X-ray radiation amount to be inversely proportional to a tooth size of the target object. When the head shape separation length is a third effective section corresponding to 70% to 100% of the first effective section, the control device increases the X-ray radiation amount to be proportional to the tooth size of the target object.

Description

Dental X-ray imaging system {DENTAL X-RAY IMAGING SYSTEM}

The present invention relates to a dental x-ray imaging system, and to a dental x-ray imaging system that solves a vibration problem that occurs during x-ray imaging and enables a clearer image frame to be obtained.

In dentistry, conventionally, during treatment or orthodontic treatment, a panoramic x-ray image is used to capture the entire structure of teeth and alveolar bone using a dental X-ray imaging device, from the front to the back and rear of the patient's head and jawbone. A cephalogram or cephalometric image taken from the anterior, left and right sides of the patient's mouth, a small sensor (intraoral sensor) that receives an X-ray beam is inserted into the mouth We have been using methods such as surveying and shooting.

Among them, the panoramic image can observe the entire tooth and alveolar bone in a planar view, but there are cases where the teeth are slightly tilted forward and backward or it is not possible to determine the malocclusion of a part of the dentition. Although it can compensate for the shortcomings, there is a disadvantage that the entire area of the teeth and alveolar bone cannot be grasped at once.

Therefore, the panoramic image and the cephalo image are often used at the same time due to the complementary nature as described above. The use of dental X-ray imaging devices capable of taking images is also increasing.

A typical X-ray irradiation device irradiates a cone-shaped X-ray beam from a small X-ray irradiation unit such as a point light source. Since the cephalo image capture requires irradiation of an X-ray beam in a wider range than a panoramic image, the X-ray irradiation unit The cephalo detector is installed and used by separating the detector for the cephalo to a distance where the irradiated cone-shaped X-ray beam is spread as much as necessary.

However, since the above-described dental X-ray imaging apparatus has the X-ray source device and the X-ray detection device spaced apart from the support pillar, when vibration is applied to the building in which the dental X-ray imaging apparatus is installed, the X-ray source apparatus and the X-ray detection apparatus There is a problem that it shakes.

SUMMARY OF THE INVENTION An object of the present invention is to provide a dental X-ray imaging system capable of solving a vibration problem occurring during X-ray imaging and obtaining a clearer dental image frame.

Another object of the present invention is to provide a dental X-ray imaging system capable of minimizing the movement of the X-ray source device and the X-ray detection device and diagnosing the degree of damage to the alveolar bone of the target object.

A dental X-ray system according to an embodiment of the present invention is an X-ray source device that emits X-ray radiation in a predetermined direction in which a target object is located, and obtains a plurality of image frames by detecting the X-ray radiation emitted to the target object An X-ray detection device, the X-ray source device and a main frame coupled to the X-ray detection device, disposed on one side of the X-ray source device, based on a first effective period from the X-ray source device to the chin support, the target object and A laser sensor for measuring the head-to-head separation length between the X-ray source devices and a control device for adjusting the amount of X-ray radiation through the X-ray source device based on the head-to-head separation length, wherein the control device includes the head-to-head separation length When is a second effective section corresponding to 30% of the first effective section, the X-ray radiation amount is reduced to be in inverse proportion to the size of the teeth of the target object, and the head-to-head separation length is 70% to 100 of the first effective section %, the amount of X-ray radiation is increased to be proportional to the size of the teeth of the target object.

According to an embodiment, the body frame includes a photographing frame connected to the X-ray source device and the X-ray detection device, a rotary arm driving unit for rotating the photographing frame, an elevating unit for moving the rotary arm driving unit up and down, and the It is used as a scaffold for the target object, and includes a cushioning member for elastically supporting the load of the target object and a pedestal for supporting the load of the elevating unit, wherein the elevating unit includes a support column and an elevating base, , The elevating base is a first base plate with one surface coupled to the pedestal, a second base plate positioned above the first base plate, and a second base plate positioned above the second base plate, and one surface is coupled to the support column. A third base plate, a vertical frame extending from the upper surface of the first base plate and disposed at each corner of the third base plate, a transport module disposed on the upper surface of the second base plate and vertically transporting the third base plate , a guide frame disposed so that the support pillar does not deviate from a predetermined area and a buffer unit for buffering the load of the third base plate, wherein the buffer unit is a first unit coupled to the upper surface of the third base plate , a second unit coupled to a lower surface of the first base plate and one end passing through the third base plate and hingedly connected to the first unit, and the other end passing through the second base plate and hinged to the second unit It includes a connected buffer rod, the buffer rod is implemented as a hydraulic cylinder.

According to an embodiment, the control device is configured to include at least one of a Gaussian blur value, a brightness value, and a sharpness value for the plurality of image frames based on person information including the head size, gender, age, and race of the target object. to correct

According to an embodiment of the present invention, it is possible to solve a vibration problem that occurs during X-ray imaging, and to obtain a clearer dental image frame.

In addition, the movement of the X-ray source device and the X-ray detection device can be minimized, and the degree of damage to the alveolar bone of the target object can be diagnosed.

1 is a view showing a dental X-ray imaging system according to an embodiment of the present invention.
FIG. 2 is an exemplary view for explaining the operation of the dental X-ray imaging system of FIG. 1 .
FIG. 3 is an embodiment for specifically explaining the elevating unit of FIG. 1 .
4 is a block diagram of the control device of FIG. 1 according to an embodiment.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily implement them. However, the accompanying drawings and the following description relate to a preferred form among various forms for effectively explaining the characteristics of the present invention, and the present invention can be changed to several different forms other than the embodiments described herein. It is not limited. It is to be understood that all modifications, equivalents or substitutions of the embodiments shall fall within the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to a specific disclosure form, and the scope of the present specification includes all modifications, equivalents or replacements included in the technical spirit.

Terms such as 'first' or 'second' may be used to describe various components, but these terms should be interpreted only for the purpose of distinguishing one component from other components. For example, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When it is said that a certain element is 'connected' to another element, it may be directly connected or connected to the other element, but it should be understood that another element may exist in between.

Terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as 'comprise' or 'have' are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof does not preclude the possibility of addition.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present specification. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

The control device 150 according to the embodiment may be implemented in various types of products such as a personal computer, a laptop computer, a tablet computer, a smart phone, a television, a smart home appliance, an intelligent car, a kiosk, a wearable device, and the like.

1 is a diagram illustrating a dental X-ray imaging system 100 according to an embodiment of the present invention, and FIG. 2 is an exemplary view for explaining the operation of the dental X-ray imaging system 100 of FIG. 1 .

1 and 2 , the dental X-ray imaging system 100 includes an X-ray source device 110 , an X-ray detection device 120 , a body frame 130 , a laser sensor unit 140 , and a control device 150 . may include

First, the X-ray source device 110 may emit X-ray radiation in a predetermined direction in which the target object is located. The X-ray source device 110 may be disposed on one side of the photographing frame 131 .

Next, the X-ray detection apparatus 120 is disposed on the other side of the imaging frame 131 spaced apart from the X-ray source apparatus 110 in parallel, and detects X-ray radiation emitted to the target object through the X-ray source apparatus 110 . Accordingly, a plurality of image frames may be obtained.

According to an embodiment, the X-ray detection apparatus 120 may be detachably formed on the photographing frame 131 in order to acquire a cephalometric image, which is a temporal portion photographing.

Next, the body frame 130 may be formed to rotate and elevate the X-ray source device 110 and the X-ray detection device 120 .

Specifically, the body frame 130 includes a photographing frame 131 connected to the X-ray source device 110 and the X-ray detection apparatus 120 , a rotating arm driving unit 132 for rotating the photographing frame 131 , and a rotating arm driving unit Elevating unit 133 for elevating and transferring 132, a buffer member 134 that is used as a scaffold for the target object and elastically supports the weight of the target object, supports the load of the elevating unit 133 It may include a pedestal 135 that does.

Here, the rotary arm driving unit 132 rotates the imaging frame 131 so as to perform CT or panoramic imaging using the X-ray source device 110 and the X-ray detection device 120 in a horizontal direction facing the ground. can At this time, the pedestal 135 may be formed in the same shape as the buffer member 134 to be attached to the lower surface of the buffer member 134 .

That is, the main body frame 130 can prevent the micro-vibration problem that may occur due to the weight of the target object in advance through the buffer member 134 as the rotary arm driving unit 132 and the elevating unit 133 operate. can

According to an embodiment, the main body frame 130 may further include a separate cephalo imaging frame 111_1 for including the cephalo image detection device 120_1 for the cephalo image.

Next, the laser sensor unit 140 is disposed on one side of the X-ray source device 110, the first effective period ( Based on s1), the head-to-head separation length d between the target object and the X-ray source device 110 may be measured.

Next, the control device 150 may adjust the amount of X-ray radiation through the X-ray source device 110 based on the head-to-head separation length d received from the laser sensor unit 140 through the network.

According to an embodiment, when the head-to-head separation length d is the second effective section corresponding to 30% of the first effective section s1, the control device 150 is inversely proportional to the tooth size of the target object received from the specialist. It is possible to reduce the amount of X-ray radiation through the X-ray source device 110 to do so.

According to another embodiment, when the head-to-head separation length d is the third effective section corresponding to 70% to 100% of the first effective section s1, the control device 150 controls the teeth of the target object received from the specialist The amount of X-ray radiation may be increased through the X-ray source device 110 to be proportional to the size.

That is, the control device 150 prevents overexposed or underexposed image frames according to the size of the head of the target object and increases or decreases the amount of X-ray radiation according to the size of the target object's teeth so as to obtain an optimal image frame. , the mechanical movement can be minimized.

According to another embodiment, when the head-to-head separation length d is any one of the second and third effective periods, the control device 150 controls the separation distance between the X-ray source device 110 and the X-ray detection device 120 . It is possible to control the body frame 130 to adjust the.

Also, the control device 150 detects a plurality of synthesis target regions based on the size of the contour lines detected from the plurality of image frames, and uses a stitching engine for each region spaced apart from the first synthesis target region by a predetermined distance. A panoramic image frame may be output by sequentially synthesizing the synthesis target region.

In addition, the control device 150, based on the person information including the head size, gender, age, and race, a Gaussian blur value, brightness value, and sharpness of the plurality of image frames detected by the X-ray detection device 120 At least one of the values may be corrected.

The control device 150 according to an embodiment determines that the center of gravity of the target object is determined by the chin support 101 based on load values of the target object measured through a plurality of weight detection sensors (not shown) provided on the buffer member 134 . ), it is possible to estimate which direction the elevating unit 133 is positioned in a forward direction and a backward direction to the elevating unit 133 based on the chin support 101 .

In this case, the control device 150 may adjust the angle of the photographing frame 131 according to which direction the center of gravity of the target object is located.

The control device 150 according to another embodiment is based on the temperature information sensed through the X-ray source device 110 , the body frame 130 , and a plurality of temperature detection sensors (not shown) attached to the outside of the control device 150 . Accordingly, it is possible to determine whether the cooling system in the hospital operates and whether the fire suppression device operates.

Specifically, when the temperature information detected by the X-ray source device 110 , the body frame 130 , and the control device 150 exceeds a preset temperature difference range, and the X-ray source device 110 is equal to or higher than a preset temperature, control The device 150 may operate a cooling system provided in the hospital to cool the X-ray source device 110 . For example, the cooling system may be a fan or an air conditioner that introduces wind in the direction of the X-ray source device 110 .

In addition, when the temperature information sensed by the X-ray source device 110, the body frame 130, and the control device 150 exceeds a preset temperature within a preset temperature difference range, the X-ray source device 110 and the X-ray detection device ( 120) can be operated around the fire suppression device provided in the hospital.

The control device 150 according to another embodiment converts the impulse radio signal reflected from the target object through the laser sensor unit 140 into a frequency domain signal to extract respiration and heart rate signals, and to stabilize the respiration and heart rate signals. At a point in time when the state is determined, X-ray radiation may be emitted to the target object through the X-ray source device 110 .

For example, the laser sensor unit 140 may include an impulse radio-ultra wide band (IR-UWB) radar sensor and a frequency-modulated continuous-wave (FMCW) radar sensor. Here, the IR-UWB radar sensor has an output power of 50 ㎼, so it may be possible to accurately monitor respiration. In addition, IR-UWB technology detects a signal reflected from an arbitrary object with higher accuracy than narrowband signals by using a very narrow impulse ranging from several ns to several hundreds of ps, and effectively extracts a respiration signal from it. It can be beneficial to

In this case, the control device 150 may remove a preset noise from the impulse radio signal and then convert the noise-removed impulse radio signal into a frequency domain signal. Here, the transformation into a frequency domain signal may be performed through a Fourier transform.

Hereinafter, with reference to FIG. 3, the elevating unit 133 will be described in more detail.

3 is an embodiment for specifically explaining the elevating unit 133 of FIG. 1 .

1 and 3 , the elevating unit 133 may include a support column 136 and an elevating base 137 .

First, the support pillar 136 may have one side connected to the rotary arm driving unit 132 and the other side connected to the elevating base 137 along the inside of the case.

Next, the elevating base 137 may be coupled to the other side of the support column 136 in order to buffer the load of the support column 136 .

The elevating base 137 includes a first base plate 137_1, a second base plate 137_2, a third base plate 137_3, a vertical frame 137_4, a transfer module 137_5, a guide frame 137_6 and It may include a buffer unit (137_7).

Specifically, as shown in FIG. 3 , the first base plate 137_1 is formed in plurality and one surface is coupled to the pedestal 135 , and the second base plate 137_2 is the upper side of the first base plate 137_1 . is located, and the third base plate 137_3 is positioned above the second base plate 137_2 , and one surface may be coupled to the support pillar 136 .

And, the vertical frame 137_4 extends from the upper surface of the first base plate 137_1 to position the second base plate 137_2 and the third base plate 137_3 on the upper surface of the first base plate 137_1. It may be disposed at every corner of the third base plate 137_3. The vertical frame 137_4 may further include a support frame 137_41 for supporting the transfer module 137_5. In this case, the support frame 137_41 may have a through hole 137_42 for passing a part of the transfer module 137_5 to pass therethrough.

At this time, the third base plate 137_3 is provided with a roller part 173_31 to ascend and descend along the vertical frame 137_4, and the vertical frame 137_4 has a rail part 174_72 in contact with the roller part 173_31 on one side. can be formed.

Subsequently, the guide frame 137_6 may be disposed so that the support pillar 136 does not deviate from the preset area.

That is, the transfer module 137_5 may raise and lower the support column 136 coupled to the third base plate 137_3 along the vertical frame 137_4. For example, the transfer module 137_5 lifts the support column 136 coupled to the third base plate 137_3 along the guide frame 137_6 on the basis of the elevating operation signal received from the control device 150 . can be lowered

Next, the buffer unit (137_7) in order to buffer the load of the support column 136 coupled to the third base plate (137_3), the first unit (137_71), the second unit (137_72) and the buffer rod (137_73) may include These buffer units (137_7) may be arranged at each of a plurality of positions spaced apart from each other by a predetermined distance or at each corner of the third base plate (137_3).

Specifically, the first unit 137_71 may be coupled to the upper surface of the third base plate 137_3 , and the second unit 137_72 may be coupled to the upper surface of the first base plate 137_1 . In this case, the buffer rod 137_73 may be formed such that one side passes through the third base plate 137_3 and is hinge-connected to the first unit 137_71, and the other side is connected to the second unit 137_72. For example, the buffer rod (137_73) may be implemented as a hydraulic cylinder.

That is, the body frame 130 can prevent external vibration transmitted to the support column 136 due to an earthquake, a large vehicle, a construction site, etc. through the elevating base 137 .

4 is a block diagram of the control device 150 of FIG. 1 according to an embodiment.

Referring to FIG. 4 , the control device 150 may include a collection unit 151 , a learning unit 153 , an extraction unit 152 , and a diagnosis unit 154 .

First, the collection unit 151 may collect the image frames of the normal group and the image frames of the abnormal group and store them in a storage DB (not shown).

Next, the extraction unit 152 may extract the outline of each tooth from the image frames stored in the storage DB (not shown).

Next, the learning unit 153 classifies the image frames of the normal group and the image frames of the abnormal group according to the tooth contours and learns them through machine learning, and provides step-by-step contours based on the normal group and abnormal tooth contours. information can be set. Here, the step-by-step contour information may include a degree of tooth damage obtained by classifying the abnormal group tooth contours into stages.

According to an embodiment, the learning unit 153 may classify the image frames of the normal group and the image frames of the abnormal group according to the tooth outline to learn a contour diagnosis algorithm for diagnosing the abnormal group teeth through machine learning.

For example, the contour diagnosis algorithm is an artificial neural network (SVM), a support vector machine (SVM), a decision tree, and a random forest generated through machine learning that receives the tooth contour as an input. (Random Forest) may be any one algorithm.

Next, the diagnosis unit 154 may diagnose the degree of damage to the alveolar bone of the target object based on step-by-step contour information corresponding to the contour of each tooth of the target object from among the normal group tooth contour and the abnormal group tooth contour.

According to an embodiment, the diagnosis unit 154 may diagnose the degree of damage to the alveolar bone of the target object based on probability information output by deep learning the tooth contour of the target object through a contour diagnosis algorithm. Such an artificial neural network may be a convolutional neural network including a feature extraction neural network and a classification neural network.

For example, a feature extraction neural network stacks an input signal by sequentially stacking a convolutional layer and a pooling layer. The convolution layer contains convolution operations, convolution filters, and activation functions. The calculation of the convolution filter is adjusted according to the matrix size of the target input, but a 9X9 matrix is generally used. The activation function may generally use a ReLU function, a sigmoid function, a tanh function, and the like, but is not limited thereto. The pooling layer is a layer that reduces the size of the input matrix, and uses a method of extracting representative values by tying pixels in a specific area. In general, the average value or the maximum value is often used for the calculation of the pooling layer, but is not limited thereto. The operation is performed using a square matrix, and a 9x9 matrix is generally used. The convolutional layer and the pooling layer are repeated alternately until the corresponding input becomes small enough while maintaining the difference.

Also, the classification neural network has a hidden layer and an output layer. The classification neural network 520 generally includes five or more hidden layers, and 80 nodes of each hidden layer can be designated, but it is also possible to set more than that in some cases. The activation function of the hidden layer uses a ReLU function, a sigmoid function, a tanh function, and the like, but is not limited thereto.

According to another embodiment, the diagnosis unit 154 determines the number of stages of contour information for each stage, based on the feedback information on the degree of alveolar bone damage diagnosed according to the step-by-step contour information and the degree of alveolar bone damage according to the symptom information diagnosed by the specialist. can be increased or decreased.

The embodiments described above may be implemented by a hardware component, a software component, and/or a combination of a hardware component and a software component. For example, the apparatus, method, and component described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate (FPGA). Array), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions, may be implemented using one or more general-purpose or special-purpose computers. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. A processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For convenience of understanding, although one processing device is sometimes described as being used, one of ordinary skill in the art will recognize that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that can include For example, the processing device may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as parallel processors.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or device, to be interpreted by or to provide instructions or data to the processing device. , or may be permanently or temporarily embody in a transmitted signal wave. The software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: dental x-ray system
110: X-ray source device
120: X-ray detection device
130: body frame
140: laser sensor unit
150: control device

Claims (3)

an X-ray source device that emits X-ray radiation in a predetermined direction in which a target object is located;
an X-ray detection apparatus for obtaining a plurality of image frames by detecting X-ray radiation emitted to the target object;
a body frame coupled to the X-ray source device and the X-ray detection device;
a laser sensor unit disposed on one side of the X-ray source device to measure a head-to-head separation length between the target object and the X-ray source device based on a first effective section from the X-ray source device to the chin support; and
Based on the head separation length, including a control device for adjusting the amount of X-ray radiation through the X-ray source device,
When the head-to-head separation length is a second effective section corresponding to 30% of the first effective section, the control device reduces the amount of X-ray radiation to be inversely proportional to the size of the teeth of the target object,
When the head separation length is a third effective section corresponding to 70% to 100% of the first effective section, the amount of X-ray radiation is increased to be proportional to the tooth size of the target object,
The body frame may include: a photographing frame connected to the X-ray source device and the X-ray detection device;
a rotating arm driving unit for rotating the photographing frame;
an elevating unit for elevating and lowering the rotary arm driving unit;
a buffer member used as a footrest of the target object and elastically supporting the load of the target object; and
Comprising a pedestal for supporting the load of the elevating unit,
The elevating unit includes a support column and an elevating base,
The elevating base may include a first base plate having one surface coupled to the pedestal;
a second base plate positioned above the first base plate;
a third base plate positioned above the second base plate and having one surface coupled to the support column;
a vertical frame extending from an upper surface of the first base plate and disposed at each corner of the third base plate;
a transfer module disposed on the upper surface of the second base plate and vertically transporting the third base plate;
a guide frame disposed so that the support pillar does not deviate from a preset area; and
It includes a buffer unit for buffering the load of the third base plate,
The buffer unit is a first unit coupled to the upper surface of the third base plate;
a second unit coupled to a lower surface of the first base plate; and
One side passes through the third base plate and is hingedly connected to the first unit, and the other side passes through the second base plate and includes a buffer rod hingedly connected to the second unit, and the buffer rod is implemented as a hydraulic cylinder. become,
The control device corrects at least one of a Gaussian blur value, a brightness value, and a sharpness value for the plurality of image frames based on person information including the head size, gender, age and race of the target object,
The control device converts the impulse radio signal reflected from the target object through the laser sensor unit into a frequency domain signal to extract respiration and heartbeat signals, and at a point in time when it is determined that the respiration and heartbeat signals are in a stable state, the X-ray source device to emit the X-ray radiation to the target object through
The laser sensor unit includes an IR-UWB (impulse radio - ultra wide band) radar sensor, a frequency-modulated continuous-wave (FMCW) radar sensor,
The control device 150 classifies the previously collected image frames of the normal group and the image frames of the abnormal group according to the tooth contour, learns an AI-based contour diagnosis algorithm through machine learning, and the tooth contour of the target object. Based on the probability information output by deep learning through the contour diagnosis algorithm, the dental x-ray system for diagnosing the degree of damage to the alveolar bone of the target object.



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