KR20100120810A - Combined dental computerized tomography and panoramic apparatus - Google Patents

Abstract

PURPOSE: A combined dental computerized tomography and a panoramic apparatus are provided to selectively obtain a ct image and a panorama x-ray image of an interested region of a head by moving an X-ray light source and an X-ray sensor unit to an interested region. CONSTITUTION: An X rays optical source section(110) projects X rays on the region of an interested region of a head. An X rays sensor unit(120) gets the CT X-ray image or the panorama X-ray image of the interested region. A rotation arm supports the X-ray optical source section and the X-ray sensor unit from both sides of the head. The X rays sensor unit includes an area sensor having the image acquisition side of a certain size.

Description

Combined dental computerized tomography and panoramic apparatus

The present invention relates to a dental CT and panoramic X-ray image acquisition apparatus, and more specifically, it is possible to selectively acquire a CT X-ray image or a panoramic X-ray image using one area sensor having a constant image acquisition surface It relates to a dental CT and panoramic X-ray image acquisition device.

In the field of dental care, the X-ray image acquisition apparatus irradiates the region of interest in the head where the X-ray light source intends to capture a certain amount of X-rays, and the X-ray sensor unit measures the transmitted X-ray amount and stores the measured data in a memory. It is a photographing apparatus that records and obtains an X-ray absorption rate of each point of a subject by a computer and reconstructs it into an image.

The X-ray image acquisition apparatus is classified into a panoramic X-ray image acquisition device, a CT X-ray image acquisition device, a cephalo X-ray image acquisition device, and the like according to the type of image or sensor to be acquired.

In particular, the panoramic X-ray image acquisition device and the CT X-ray image acquisition device are classified according to the size of a sensor that receives X-rays, that is, whether a two-dimensional image of the ROI of the head can be captured at a time.

In more detail, the CT X-ray image acquisition apparatus obtains an entire region of the ROI as a two-dimensional X-ray image at various angles, and reconstructs it into one three-dimensional X-ray image to show the cross section of the ROI. The panoramic X-ray image acquisition device is an image acquisition device capable of reconstructing one two-dimensional panoramic X-ray image by acquiring and concatenating partial regions of the ROI into two-dimensional X-ray images.

In general, in order to acquire a CT X-ray image and a panoramic X-ray image, it is inconvenient to provide both a CT X-ray image acquisition device equipped with a CT X-ray sensor and a panoramic X-ray image acquisition device equipped with a panoramic X-ray sensor. have.

In order to solve this problem, the inventors devised a 'removable dental X-ray sensor device' (Registration No .: 20-0438794) to replace a CT X-ray sensor or a panoramic X-ray sensor in one X-ray image acquisition device. By providing a dental X-ray sensor device that can selectively acquire a CT X-ray image and a panoramic X-ray image.

However, the 'detachable dental X-ray sensor device' has the advantage of taking both the CT X-ray image and the panoramic X-ray image with one X-ray image acquisition device. It is inconvenient to selectively mount the CT X-ray sensor and the panoramic X-ray sensor to acquire.

The present inventors acquire a dental CT X-ray image and a panoramic X-ray image using one X-ray image acquisition device, but selectively acquire a CT X-ray image and a panoramic X-ray image using only one area sensor. As a result of the research efforts, the technical configuration of the X-ray image acquisition device capable of acquiring both the CT X-ray image or the panoramic X-ray image of the ROI by activating the entire surface or a partial surface of the area sensor is completed. Was done.

Accordingly, an object of the present invention is to provide a dental CT and panoramic X-ray image acquisition device that can selectively acquire both the CT X-ray image and the panoramic X-ray image of the ROI in the head using one area sensor. .

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention receives an X-ray light source unit for irradiating X-rays to a region of interest in the head, the X-rays passing through the region of interest, CT and X-ray image or panoramic X-ray image of the region of interest An X-ray sensor unit and a rotating arm unit supporting the X-ray light source unit and the X-ray sensor unit on both sides of the head, wherein the X-ray sensor unit has an image acquisition surface having a predetermined size for receiving the X-rays; And an area sensor, wherein the area sensor activates an entire surface or a partial surface of the image acquisition surface according to an image to be acquired from among the X-ray images to generate a CT X-ray image or a panoramic X-ray image of the ROI. Provided are a dental CT and panoramic X-ray image acquisition device to selectively obtain.

In a preferred embodiment, the rotary arm unit rotates the X-ray light source unit and the X-ray sensor unit to obtain the CT X-ray image or the panoramic X-ray image, and the X-ray light source unit when the CT X-ray image is acquired. The photographing focus between the X-ray sensor units is fixed to the region of interest and rotated, and when the panoramic X-ray image is acquired, the photographing focus is moved on the region of interest and rotated.

In an exemplary embodiment, the area sensor activates an entire surface of the image acquisition surface when the CT X-ray image is acquired, and activates a partial surface of the image acquisition surface when the panoramic X-ray image is acquired.

In a preferred embodiment, the partial surface activated when the panoramic X-ray image is acquired is activated as a partial surface of another area of the image acquisition surface during every panoramic X-ray image acquisition.

In an exemplary embodiment, the partial surface activated during the panoramic X-ray image acquisition may be periodically activated as a partial surface of another region of the image acquisition surface.

In a preferred embodiment, the virtual line connecting the X-ray light source and the focus point on the region of interest is perpendicular to the center of the area of the entire or partial surface of the image acquisition surface.

In an exemplary embodiment, the X-ray sensor unit moves on the rotational arm so that the area center of the entire surface is perpendicular to the virtual line when acquiring the CT X-ray image, and the partial when the panoramic X-ray image is acquired. The area center of the plane is perpendicular to the virtual line.

In an exemplary embodiment, the X-ray light source moves on the rotating arm so that the area center of the entire surface is perpendicular to the virtual line when acquiring the CT X-ray image, and the partial when the panoramic X-ray image is acquired. The area center of the plane is perpendicular to the virtual line.

However, both the X-ray sensor unit and the X-ray light source unit may move on the rotating arm.

In a preferred embodiment, the head is provided between the X-ray sensor unit and the X-ray light source unit, and the head is fixed to the head restraint, the head restraint is moved simultaneously with the light source unit, the virtual line is the entire virtual line It should be perpendicular to the area center of the face or some face.

In a preferred embodiment, the region of interest is the entire head of the person, and the area sensor further acquires a cephalo X-ray image of the region of interest.

In an exemplary embodiment, the area sensor activates the entire surface of the image acquisition surface when the cephalo X-ray image is acquired.

In an exemplary embodiment, the X-ray sensor unit moves on the rotary arm such that the area center of the entire surface is perpendicular to the virtual line when the cephalo X-ray image is acquired.

In a preferred embodiment, the X-ray sensor unit is slid by the rotary arm to change the distance to the X-ray light source.

However, the X-ray sensor unit may be detached from different parts of the rotary arm unit to vary the distance from the X-ray light source unit.

The present invention has the following excellent effects.

First, according to the dental CT and panoramic X-ray image acquisition device of the present invention, CT or X-ray image and panoramic X-ray image of the region of interest in the head by activating the entire surface or a partial surface of the image acquisition surface of one area sensor There is an effect that can be selectively acquired.

In addition, according to the dental CT and panoramic X-ray image acquisition apparatus of the present invention, since the focus point of the X-ray light source and the X-ray sensor unit can be fixed or moved to the region of interest, CT X-ray image and panoramic X-ray of the region of interest in the head. There is an effect that can selectively acquire the image.

In addition, according to the dental CT and panoramic X-ray image acquisition apparatus of the present invention, the area center of the entire surface or a partial surface and the X-ray light source unit and the focusing point of focusing when the CT X-ray image or the panoramic X-ray image is acquired Since the virtual line is perpendicular to each other, it is possible to obtain a high-quality CT X-ray image or a panoramic X-ray image.

In addition, according to the dental CT and panoramic X-ray image acquisition apparatus of the present invention, a portion of the image acquisition surface, which is activated at the time of the acquisition of the panoramic X-ray image, is obtained at every panoramic X-ray image or periodically to a portion of another area. Since it is activated, there is an effect that can extend the life of the X-ray sensor unit.

The terms used in the present invention were selected as general terms as widely used as possible, but in some cases, the terms arbitrarily selected by the applicant are included. In this case, the meanings described or used in the detailed description of the present invention are considered, rather than simply the names of the terms. The meaning should be grasped.

Hereinafter, the technical structure of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Like reference numerals designate like elements throughout the specification.

1 is a view showing a dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the dental CT and panoramic X-ray image obtaining apparatus 100 according to an exemplary embodiment of the present invention includes an X-ray light source unit 110, an X-ray sensor unit 120, and a rotation arm unit 130. Is done.

The X-ray light source unit 110 irradiates X-rays to the ROI of the head 10.

In addition, the X-ray light source unit 110 is provided with an X-ray light source (not shown) for generating X-rays and a slit (not shown) for irradiating the generated X-rays in a predetermined direction.

The X-ray sensor unit 120 receives X-rays passing through the ROI of the head 10 to obtain a CT X-ray image or a panoramic X-ray image of the ROI.

In addition, the X-ray sensor unit 120 receives an area of the area sensor 121 having an image acquisition surface (a) of a predetermined size for receiving the X-ray to obtain a CT X-ray image or a panoramic X-ray image of the region of interest. In addition, the image acquisition surface (a) is the entire surface or a partial surface is activated according to the image to be obtained from the CT X-ray image or the panoramic X-ray image.

A more detailed description will be given with reference to FIGS. 2 to 4.

That is, even if a conventional CT X-ray sensor or a panoramic X-ray sensor is not separately provided, a CT X-ray image or a panoramic X-ray image of the ROI may be acquired using one area sensor.

The X-ray sensor unit 120 may further acquire a cephalo X-ray image of the ROI.

Also, in general, when the cephalo X-ray image is acquired, the distance between the X-ray sensor unit 120 and the light source unit 110 should be farther than the distance when the CT X-ray image or the panoramic X-ray image is acquired. The sensor unit 120 may move in the rotary arm unit 130, which will be described below, to vary a distance from the X-ray light source unit 110.

For example, a guide rail (not shown) is formed on the rotation arm 130, and the sensor unit 120 slides along the guide rail, and may vary a distance from the X-ray light source 110. have.

As another example, the X-ray sensor unit 120 is detached from the rotary arm unit 130, and the X-ray sensor is located at a different distance from the X-ray light source unit 110 to the rotary arm unit 130. A plurality of mounting units (not shown) on which the unit 120 is mounted may be provided, and the X-ray sensor unit 120 may be selectively detached from the mounting units to vary the distance from the X-ray light source unit 110. have.

In addition, the head 10 is placed and fixed between the X-ray light source unit 110 and the X-ray sensor unit 120, and a head fixing stand 150 is provided to prevent the head from moving during X-ray image acquisition. The head fixture 150 is connected to the rotary arm support 140.

The rotary arm unit 130 is suspended on the rotary arm support unit 140 around the axis of rotation (r) from the upper portion of the head 10, one side is provided with the X-ray light source unit 110, the other side the X The line sensor unit 120 is provided.

That is, the rotary arm 130 serves to support the X-ray light source unit 110 and the X-ray sensor unit 120 on both sides of the head 10.

In addition, the rotation arm unit 130 rotates about the rotation axis r so that the X-ray light source unit 110 and the X-ray sensor unit 120 generate a CT X-ray image or a panoramic X-ray image of the ROI. Get it.

In addition, an L guide (not shown) may be provided inside the rotary arm support 140 supporting the rotary arm 130 to linearly move the rotary shaft r on the x-axis or the y-axis.

The reason for this is that when the CT X-ray image of the head 10 is taken, the focal point of the head 10, that is, the center of rotation of the X-ray light source 110 and the X-ray sensor 120 is fixed, so that the rotation axis is fixed. It is not necessary to move, but since the focusing point of the head 10 should be moved on the ROI when the panoramic X-ray image is taken, the rotation axis should move on the x-axis or the y-axis.

However, the LM guide (not shown) may be provided on the rotary arm 130.

That is, the rotation axis r may move on the LM guide (not shown) and move the photographing focus, or the LM guide may move on the fixed rotation axis r and move the photographing focus. .

In more detail, the LM guide (not shown) is coupled to a first axis guider fixed on a first axis to be fixed, the first axis guider on a second axis perpendicular to the first axis, and the first axis. And a second axis guider sliding along the guider and moving on the first axis.

In addition, the rotation axis r slides on the second axis guider and moves on the second axis.

Therefore, the rotation axis r can move freely on the x-y plane formed by the guiders.

2 is a view for explaining the CT X-ray image acquisition process of the dental CT and panoramic image acquisition apparatus according to an embodiment of the present invention.

Hereinafter, components that are substantially the same as those of FIG. 1 will not be described and reference will be made to the same reference numerals.

2, the CT X-ray image acquisition process of the dental CT and panoramic image acquisition apparatus 100 according to an embodiment of the present invention, first, the X-ray light source unit 110 and the X-ray sensor unit 120 ) Is fixed to the region of interest 10a of the head 10.

Next, the rotation arm 130 rotates about the rotation axis r, and the X-ray light source unit 110 and the X-ray sensor unit 120 each circle trajectory around the photographing focus f. It rotates along (l ₁ , l ₂ ) and acquires a two-dimensional X-ray image of the entire region of interest 10a at various angles.

In general, the magnification of the X-ray light source unit 110 and the X-ray sensor unit 120 (distance between the X-ray light source unit and the X-ray sensor unit / distance between the X-ray sensor unit and the X-ray sensor unit) is 1.3, 1.5, and 1.8. Or, since it is set to 2.0, the X-ray light source unit 110 and the X-ray sensor unit 120 rotates along different circular trajectories (l ₁ , l ₂ ).

In this case, the area sensor of the X-ray sensor unit 120 activates the entire surface of the image acquisition surface (a) to obtain a CT X-ray image of the region of interest (10a).

The reason is that the entire region of interest 10a must be acquired at once by the area sensor in order to acquire a CT X-ray image.

However, even if the entire surface of the image acquisition surface (a) is not activated, if only a two-dimensional X-ray image of the entire region of interest 10a can be acquired at a time, only a portion of the image acquisition surface (a) may be activated. Of course.

In addition, the entire surface of the image acquisition surface (a) is also activated when the cephalo X-ray image is acquired, which is why the entire surface of the image acquisition surface (a) is activated when the CT X-ray image is acquired. Is the same as

In addition, the virtual line x _a connecting the X-ray light source unit 110 and the photographing focus f is perpendicular to the area center c _a of the activated entire surface.

That is, the area center c _a of the X-ray light source unit 110, the photographing focus f, and the activated entire surface are placed on one straight line.

This is because in order to obtain a clear CT X-ray image of the region of interest 10a, the optical path of the X-rays must be perpendicular to the area center c _a of the activated entire surface.

3 and 4 are views for explaining a panoramic X-ray image acquisition process of the dental CT and panoramic image acquisition apparatus according to an embodiment of the present invention.

Hereinafter, the same elements as those of FIGS. 1 and 2 will be omitted and the same reference numerals will be referred.

Referring to the drawings, a panoramic X-ray image acquisition process of the dental CT and panoramic image acquisition apparatus according to an embodiment of the present invention, first, a portion (b) of the image acquisition surface (a) of the area sensor 121 Is activated.

For example, only pixels corresponding to the partial surface b of the pixels (not shown) constituting the image acquisition surface a of the area sensor 121 are 'on' and other than the partial surface b. The part can be off.

As another example, a gate driver (not shown) which leaks data of the pixels and causes a detector (not shown) to read the leaked data detects only data of pixels corresponding to the partial surface b. You can also use a leak-tight method.

In addition, the partial surface (b) is activated as the partial surface (ba, b-2) of the other area of the image acquisition surface (a) during every panoramic X-ray image acquisition, so that the entire surface of the image acquisition surface (a) Is evenly used as the partial surface (b). Therefore, since only a part of the area sensor 121 is not used, the life of the X-ray sensor unit 120 can be extended.

On the other hand, the region of interest 10a when acquiring the CT X-ray image and the region of interest 10b when acquiring the panoramic X-ray image may be different from each other. It is for acquiring an X-ray image of one tooth and a root, and the region of interest 10b when acquiring the panoramic X-ray image is for acquiring an X-ray image of the entire arch.

Hereinafter, the region of interest 10a for acquiring the CT X-ray image and the region of interest 10b for acquiring the panoramic X-ray image are defined as the CT region of interest 10a and the panoramic region of interest 10b, respectively, and the CT by defining a shooting focus (f) and the panoramic X-ray focus at the time of image acquisition (f ₁₎ for each CT imaging focus (f) and the panoramic photographing focus (f ₁₎ at the time of X-ray images obtained illustrating separated from each other Shall be.

In addition, when the cephalo X-ray image is acquired, the entire human head becomes the region of interest.

Next, the X-ray sensor such that an imaginary line x _a connecting the X-ray light source unit 110 and the panoramic photographing focal point f ₁ is perpendicular to the area center c _b of the activated partial surface b. The unit 120, the region of interest 10b, or the X-ray light source unit 110 is moved.

A detailed description will be given with reference to FIGS. 5 and 6.

In this case, the panoramic photographing focus f ₁ is located at one side of the region of interest 10b of the head 10.

This is because the panoramic photographing focus f ₁ moves from one side of the panoramic region of interest 10b to the other side when the panoramic X-ray image is acquired.

Next, the X-ray light source unit 110 and the X-ray sensor unit 120 rotate along different elliptic trajectories l ₃ and l ₄ , respectively, and move the panoramic photographing focus f ₁ to the panoramic region of interest ( 10b) moves from one side to the other side to obtain a panoramic X-ray image of the panoramic region of interest 10a.

In addition, the X-ray light source unit 110 and the X-ray sensor unit 120, respectively, as the rotation axis r of the rotary arm 130 moves along the elliptic trajectory r _l on the rotary arm supporter 140. It will rotate along different elliptic trajectories (l ₃ , l ₄ ).

5 is a view showing a first embodiment of the panoramic X-ray image acquisition of the dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention.

Hereinafter, components substantially the same as those of FIGS. 1 to 4 will be omitted and the same reference numerals will be referred.

As described with reference to FIGS. 2 and 3, in order to obtain a clear CT X-ray image or a panoramic X-ray image, the X-ray light source unit 110 and the CT imaging focus f or the panoramic imaging focus f ₁ are used. The connecting imaginary line x _a must be perpendicular to the area center c _a , c _b of the activated whole surface a or partial surface b.

That is, the area centers c _a and c _{b of} the X-ray light source unit 110, the photographing focal points f and f ₁ , and the activated entire surface a or partial surface _b are on a straight line. Located.

First embodiment of the panoramic X-ray image acquisition of the dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention, first, the X-ray light source unit 110, the CT during X-ray imaging The CT imaging focal point f and the area center c _a of the entire surface a are positioned in a straight line to acquire a CT X-ray image of the CT region 10a.

Next, the partial surface (b) to be used to acquire the panoramic X-ray image of the entire surface (a) is activated, the X-ray light source unit 110 and the CT imaging focus (f) is fixed, the X-ray sensor unit 120 moves in the rotary arm 130 and moves up, down, left and right, so that the area center c of the X-ray light source 110, the CT photographing focal point f, and the partial surface _b is in a straight line. It is located at.

In this case, the CT photographing focus f is the same as the panorama photographing focus f ₁ , and when the photographing focus moves, the CT photographing focus f is defined as the panorama photographing focus f ₁ .

Next, the X-ray light source unit 110 and the X-ray sensor unit 120 are rotated along different elliptic trajectories l ₃ and l ₄ with respect to the panoramic photographing focal point f ₁ , respectively. A panoramic X-ray image of the area 10b is obtained.

6 is a view showing a second embodiment of the panoramic X-ray image acquisition of the dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention.

Hereinafter, the same elements as in FIG. 5 will be omitted and the same reference numerals will be omitted.

6, a second embodiment of the panoramic X-ray image acquisition of the dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention is a dental CT and panoramic X according to an embodiment of the present invention Compared with the first embodiment of the panoramic X-ray image acquisition of the X-ray image acquisition apparatus, the X-ray sensor unit 120 is fixed, and the X-ray light source unit 110 and the CT imaging focus f move, The X-ray light source unit 110, the CT imaging focal point f, and the area center c _b of the partial surface b are positioned on a straight line.

In addition, the X-ray light source unit 110 is moved up and down, left and right by sliding in the rotary arm unit 130, the head fixture 150 is moved up and down, left and right by sliding on the rotary arm support 140, the X-ray light source unit An imaginary line x _a connecting 110 with the CT photographing focal point f is perpendicular to the area center c _b of the partial surface b.

However, the X-ray light source unit 110 and the X-ray sensor unit 120 simultaneously move in the rotating arm unit 130, such that the X-ray light source unit 110, the CT imaging focus f, and the partial surface b The center of area c _b ) may be located in a straight line.

Next, the X-ray light source unit 110 and the X-ray sensor unit 120 are rotated along different elliptic trajectories l ₃ and l ₄ with respect to the panoramic photographing focal point f ₁ , respectively. A panoramic X-ray image of the area 10b is obtained.

As described above, the present invention has been illustrated and described with reference to preferred embodiments, but is not limited to the above-described embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

1 is a view showing a dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention,

2 is a view for explaining the CT X-ray image acquisition process of the dental CT and panoramic image acquisition apparatus according to an embodiment of the present invention,

3 and 4 are views for explaining a panoramic X-ray image acquisition process of the dental CT and panoramic image acquisition apparatus according to an embodiment of the present invention,

5 is a view showing a first embodiment of the panoramic X-ray image acquisition of the dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention,

6 is a view showing a second embodiment of the panoramic X-ray image acquisition of the dental CT and panoramic X-ray image acquisition apparatus according to an embodiment of the present invention.

In the drawings according to the present invention, the same reference numerals are used for components having substantially the same configuration and function.

<Description of the symbols for the main parts of the drawings>

100: dental CT and panoramic X-ray image acquisition device

110: X-ray light source 120: X-ray sensor

121: area sensor 130: rotary arm

140: rotation arm support 150: head fixation

Claims (15)

An X-ray light source unit irradiating X-rays to a region of interest in the head; An X-ray sensor unit for receiving X-rays passing through the region of interest and acquiring a CT X-ray image or a panoramic X-ray image of the region of interest; And Rotation arm portion for supporting the X-ray light source unit and the X-ray sensor unit on both sides of the head; The X-ray sensor unit includes an area sensor having an image acquisition surface of a predetermined size for receiving the X-rays, The area sensor is a dental for selectively obtaining a CT X-ray image or a panoramic X-ray image of the ROI by activating the entire surface or a partial surface of the image acquisition surface according to the image to be obtained from the X-ray images CT and panoramic X-ray image acquisition device. The method of claim 1, The rotating arm unit rotates the X-ray light source unit and the X-ray sensor unit to obtain the CT X-ray image or the panoramic X-ray image, When acquiring the CT X-ray image, the photographing focus between the X-ray light source unit and the X-ray sensor unit is fixed to the region of interest and rotated. And a dental CT and a panoramic X-ray image acquiring device, when the panoramic X-ray image is acquired, the imaging focus is moved while rotating on the ROI. The method of claim 2, The area sensor activates the entire surface of the image acquisition surface when acquiring the CT X-ray image, and activates a partial surface of the image acquisition surface when the panoramic X-ray image is taken. X-ray image acquisition device. The method of claim 3, wherein And a partial surface activated when the panoramic X-ray image is acquired is activated as a partial surface of another region of the image acquisition surface upon every panoramic X-ray image acquisition. The method of claim 3, wherein And a partial surface activated when the panoramic X-ray image is acquired is periodically activated as a partial surface of another region of the image acquisition surface. 6. The method according to any one of claims 1 to 5, And an imaginary line connecting the X-ray light source unit and the focus point on the ROI to be perpendicular to the center of the area of the entire or partial surface of the image acquisition surface. The method of claim 6, The X-ray sensor moves on the rotating arm so that the area center of the entire surface is perpendicular to the virtual line when acquiring the CT X-ray image, and the area center of the partial plane is the area when the panoramic X-ray image is acquired. Dental CT and panoramic X-ray image acquisition device, characterized in that perpendicular to the virtual line. The method of claim 6, The X-ray light source moves on the rotating arm so that the area center of the entire surface is perpendicular to the virtual line when acquiring the CT X-ray image, and the area center of the partial surface is the area when the panoramic X-ray image is acquired. Dental CT and panoramic X-ray image acquisition device, characterized in that perpendicular to the virtual line. The method of claim 6, The X-ray sensor unit and the X-ray light source unit move on the rotating arm, respectively, so that the area center of the entire surface is perpendicular to the virtual line when acquiring the CT X-ray image, and when the panoramic X-ray image is acquired, Dental CT and panoramic X-ray image acquisition device, characterized in that the area center of the surface is perpendicular to the virtual line. The method of claim 8, It is provided between the X-ray sensor unit and the X-ray light source unit, and further comprises a head fixing stand that the head is placed and defined, And the head fixture moves simultaneously with the light source, such that the virtual line is perpendicular to the center of the area of the entire surface or the partial surface. The method of claim 6, And the area of interest is the entire head of the person, and the area sensor further acquires a cephalo X-ray image of the area of interest. The method of claim 11, The area sensor is a dental CT and panoramic X-ray image acquisition device, characterized in that to activate the entire surface of the image acquisition surface when the cephalo X-ray image acquisition. 13. The method according to claim 11 or 12, And the X-ray sensor unit moves on the rotating arm so that the area center of the entire surface is perpendicular to the virtual line when the cephalo X-ray image is acquired. The method of claim 13, And the X-ray sensor unit slides on the rotary arm unit to vary the distance from the X-ray light source unit. The method of claim 13, And the X-ray sensor unit is detached to different portions of the rotary arm unit to vary the distance from the X-ray light source unit.

Images