KR20070017665A - X-ray computerized tomography photographing device and method of photographing using that - Google Patents

Abstract

An X-ray CT imaging apparatus and an imaging method using the same are provided. The photographing apparatus includes a bay, a support column, a lifting member, a rotating arm supporting member, a rotating arm, a rotating arm driving means, and a jaw supporting member, and the rotating arm driving means includes the rotating arm and the rotating arm supporting member being lifted. Drive in the direction connected to the member, the jaw support member is characterized in that not only driving in the lifting direction of the lifting member separate from the lifting member, but also in a direction perpendicular to the lifting direction of the lifting member. In setting the central axis of CT imaging, since the rotary arm drive means performs only the first axis adjustment, not only the mechanical configuration of the rotary arm support member portion connected to the upper part of the elevating member is simplified, but also the volume and weight are reduced, so that the X-ray This provides the advantage that the CT imaging device can be mechanically stable.

X-ray CT scanner, jaw support member

Description

X-ray Citigraphy Device and Shooting Method Using The Same {X-RAY COMPUTERIZED TOMOGRAPHY PHOTOGRAPHING DEVICE AND METHOD OF PHOTOGRAPHING USING THAT}

1 is a perspective view of an X-ray CT imaging apparatus according to the prior art,

2 is a perspective view of an X-ray CT imaging apparatus according to an embodiment of the present invention,

3A and 3B illustrate a method of performing CT imaging using an X-ray CT imaging apparatus according to the present invention.

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

100, 200: X-ray CT imaging device 110, 210: Base

120, 220: support pillar 130, 230: lifting member

140, 240: rotation arm support member 150, 250: rotation arm

151, 251: X-ray sensor 152, 252: X-ray light source

154: tooth of the patient 155: central axis

160, 260: jaw support member 170, 270: chair

180, 280: rotary arm drive means 290: head fixing means

The present invention relates to an X-ray CT imaging apparatus and an imaging method using the same, and more particularly, to an X-ray CT imaging apparatus for setting a central axis of CT imaging at a predetermined position of a patient's teeth through three-axis adjustment and an imaging method using the same. It is about.

X-ray computerized tomography (CT) imaging device transmits a certain amount of X-ray flux to the body part to be photographed, the X-ray sensor measures the transmitted X-ray amount and records the measured data in a memory, and the body by computer It is a device that obtains the X-ray absorption rate of each point on the photographing part and reconstructs it into an image. The image obtained by the X-ray CT imaging apparatus does not appear to accumulate three-dimensional information inside the object in a two-dimensional film like a general X-ray image, but quantitatively shows all information of a randomly selected cross-section, so Accurately photographs and provides various facts that are difficult to find.

In the case of such an X-ray CT imaging apparatus, particularly an X-ray CT imaging apparatus having a rotary arm used for dental purposes, the central axis of the CT imaging is first set at a predetermined position of the patient's teeth to be photographed. Thereafter, the photographing is performed by rotating the rotary arm around the tooth of the patient based on the set central axis.

1 is a perspective view of an X-ray CT imaging apparatus according to the prior art.

Referring to FIG. 1, the X-ray CT imaging apparatus 100 includes a base 110, a support pillar 120, a lifting member 130, a rotation arm support member 140, an X-ray sensor 151, and an X-ray. The light source unit 152 is composed of a rotary arm 150, the jaw support member 160, the chair 170, the rotary arm driving means 180 and the like disposed opposite.

In setting a central axis of CT imaging at a predetermined position of a patient's tooth to be photographed, conventionally, two axes are adjusted by the rotary arm driving means 180 connected to the rotary arm 150 (X-axis and Y-axis adjustment). And the other axis was adjusted while the patient moved directly.

That is, since the rotational driving and the horizontal driving in two directions are made in the portion of the rotary arm support member 140 connected to the upper portion of the elevating member 130, the mechanical configuration becomes complicated and many parts are required. Therefore, there is a problem that the volume and weight of the portion connected to the elevating member 130 is increased. In addition, since the patient needs to set the central axis by moving, there is a problem that provides the patient with discomfort.

The technical problem to be achieved by the present invention is to solve the above-mentioned problems of the prior art, the mechanical configuration of the rotary arm support member connected to the lifting member is simple, even if the patient does not move the central axis of the X-ray CT An object of the present invention is to provide an X-ray CT imaging apparatus that can be set and a photographing method using the same.

In order to achieve the above technical problem, an aspect of the present invention provides an X-ray CT imaging apparatus. The photographing apparatus includes a base; A support pillar installed on the base; An elevating member installed to elevate and displace in the vertical direction on the support column; A rotary arm support member connected to an upper portion of the elevating member; An X-ray light source unit and an X-ray sensor for detecting X-rays generated in the X-ray tube view, which are disposed to face each other, and which is supported by the rotary arm support member; Rotation arm driving means interposed between the rotation arm support member and the rotation arm to pivotally drive the rotation arm; And a jaw support member connected to a lower portion of the elevating member, wherein the rotary arm driving means drives the rotary arm in a direction in which the rotary arm support member is connected to the elevating member, Apart from the elevating member, the elevating member is driven not only in the elevating direction of the elevating member, but also in the direction perpendicular to the elevating direction of the elevating member.

The X-ray CT imaging apparatus may further include a head fixing means positioned between the X-ray light source unit and the X-ray sensor and connected to a predetermined portion of the rotation arm supporting member, wherein the head fixing means is the head of the patient. It may further include a means for adjusting the width according to the size.

In order to achieve the above technical problem, another aspect of the present invention provides a photographing method using an X-ray CT photographing apparatus. The method uses an X-ray CT imaging apparatus having a base, a support column, a lifting member, a rotating arm supporting member, a rotating arm having an X-ray light source unit and an X-ray sensor, a rotating arm driving means, and a jaw supporting member. A CT imaging method, comprising: positioning a patient's jaw on a jaw support member connected to a lower portion of the elevating member; Setting a central axis of a CT scan at a predetermined position of a patient's tooth to be photographed; And performing CT imaging by pivoting the rotary arm on the basis of the set central axis, wherein setting the central axis of the CT imaging includes adjusting the X axis using the rotary arm driving means and supporting the jaw. It is characterized by performing through the Y-axis and Z-axis adjustment using the member.

The X-axis adjustment is performed by driving the rotary arm in a direction in which the rotary arm support member is connected to the elevating member by using the rotary arm driving means, and the Y-axis adjustment is performed by the jaw support member of the elevating member. The driving is performed in a direction perpendicular to the lifting direction, and the Z-axis adjustment may be performed by driving the jaw support member in the lifting direction of the lifting member.

Setting the central axis of the CT scan at a predetermined position of the patient tooth may include a first adjustment step of performing any one of the X axis adjustment, the Y axis adjustment, and the Z axis adjustment; A second adjustment step of performing any one of the two axis adjustments except the axis adjustment performed in the first adjustment step; And a third adjustment step of performing the remaining axis adjustment except for the axis adjustment performed in the first adjustment step and the second adjustment step.

After the first adjustment, the second adjustment and the third adjustment step, the necessary axis adjustment during the X axis adjustment, the Y axis adjustment and the Z axis adjustment may be performed again.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings in order to describe the present invention in more detail. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms.

2 is a perspective view of an X-ray CT imaging apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the X-ray CT imaging apparatus 200 includes a base 210, a support pillar 220, a lifting member 230, a rotation arm support member 240, an X-ray sensor 251, and an X-ray. The light source unit 252 includes a rotating arm 250, a jaw supporting member 260, a chair 270, a rotating arm driving means 280, and a head fixing means 290 disposed to face each other.

The base 210 supports the support pillar 220 on which the components are installed, and is provided with a chair 270 on which the patient can sit. The support pillar 220 is installed on one side of the base 210.

The lifting member 230 is installed on the support pillar 220. The elevating member 230 is provided with a control motor and the like can be moved up and down. Therefore, the height can be adjusted appropriately according to the height of the patient.

The rotary arm support member 240 is connected to the upper portion of the elevating member 230 in a substantially vertical direction. The rotary arm support member 240 supports the rotary arm 250 by the rotary arm driving means 280. The rotary arm driving means 280 pivotally drives the rotary arm 250. In addition, a line is formed on the rotary arm support member 240 so that the rotary arm driving means 280 can move (not shown in the drawing), so that the rotary arm support member 240 is connected to the rotary arm 250. It may be driven in a direction connected to the elevating member 230 (hereinafter referred to as X-axis adjustment). The rotating arm support member 240 and the elevating member 230 are provided with mechanical components such as a control motor for turning drive and X-axis driving driven by the rotary arm driving means 280.

The rotary arm 250 is provided with an X-ray light source unit 252 at one end thereof and an X-ray sensor 251 at the other end thereof, and is disposed to face each other. The X-ray light source unit 252 generates X-rays and irradiates the patient. The X-ray sensor 251 receives X-rays and converts them into electrical signals. The X-ray sensor 251 detects X-rays generated by the X-ray light source unit 252 and acquires an image, and then transmits the acquired image to the outside.

The X-ray sensor 251 is a CT sensor. The CT sensor 251 may use an area sensor such as a single area sensor or a multi area sensor, or may use a sequential drive type sensor.

A head fixing means 290 is positioned between the X-ray light source 252 and the X-ray sensor 251. The head fixing means 290 has a headband shape surrounding the forehead of the patient, and fixes the head of the patient. That is, the jaw supporting member 260 serves to fix the head of the patient. In particular, in CT imaging, the head of the head fixing means 290 is important because it is possible to obtain a clear image without distorting the shaking of the head of the patient. The head fixing means 290 is connected to a predetermined portion of the rotary arm supporting member 240 through the rotary arm 250, the rotary arm supporting member without being affected by the driving of the rotary arm 250 It is connected to a predetermined portion of 240.

The head fixing means 290 may further include a means (not shown) for adjusting the width according to the size of the head of the patient. Since the head of the patient is different from each other, the imaging can be performed by adjusting the width of the portion surrounding the forehead of the patient to match the size of the head of the patient.

The jaw finger member 260 is connected to the lower portion of the elevating member 230 in a substantially vertical direction. The jaw support member 260 is a place where the jaw of the patient is located, and allows the head of the patient to be positioned between the X-ray sensor 251 and the X-ray light source unit 252 provided in the rotation arm 250. The jaw supporting member 260 may be driven separately from the elevating member 230. That is, not only driving in the lifting direction of the lifting member 230 (hereinafter referred to as Z-axis adjustment), but also driving in a direction perpendicular to the lifting direction of the lifting member 230 (hereinafter referred to as Y-axis adjustment). can do. Lines are formed at a portion where the jaw support member 260 is connected to the elevating member 230 so that the jaw support member 260 can adjust the Z axis and the Y axis. The elevating member 230 is provided with mechanical components such as a control motor required for Y-axis adjustment and Z-axis adjustment driven by the jaw support member 260.

In addition, the jaw support member 260 may separately drive only the portion where the jaw of the patient is located. For example, the jaw support member 260 may be connected to the elevating member 230 to adjust the Y axis, and only a portion of the patient's jaw, which is a part of the jaw support member 260, may be driven separately. Z-axis can be adjusted.

As described above, the X-ray CT imaging apparatus 200 according to the present invention drives the rotation arm 250 to the X axis by the rotation arm driving means 280 to adjust the X axis, and the jaw support member ( 260) to adjust the Y-axis and Z-axis to set the central axis required for X-ray CT imaging. Therefore, the rotary arm support member 240 connected to the upper portion of the elevating member 230 only needs to be equipped with mechanical equipment for pivoting and adjusting the X axis of the rotary arm 250, thereby simplifying the mechanical configuration. In addition, since the volume and weight are reduced, the X-ray CT imaging apparatus 200 may have mechanical stability.

In addition to the above components, components such as a control device, a control means, a control motor, an arithmetic processing means, and an operation unit required for driving the X-ray CT imaging apparatus 200 are obvious to those skilled in the art and will not be described in the description. do.

Hereinafter, a method of performing CT imaging using an X-ray CT imaging apparatus according to the present invention will be described with reference to FIGS. 2, 3A, and 3B.

Referring back to FIG. 2, the patient is placed in a chair 270 installed in the base 210. After the patient is located in the chair 270, the lifting member 230 is lifted and displaced according to the height of the patient's sitting height so that the patient can take a picture in a comfortable state.

Subsequently, the jaw of the patient is positioned on the jaw support member 260 connected to the lower portion of the elevating member 230.

Subsequently, the central axis of the CT scan is set at a predetermined position of the patient's tooth to be photographed. When the central axis is set, the forehead portion of the patient is fitted to the head fixing means 290 to fix the head of the patient. In the case of CT imaging, a central axis is set on a tooth to be photographed, and the X-ray sensor 251 and the X-ray light source unit 252 are pivotally driven to face each other with the central axis as a rotation axis to perform imaging. Since this is done, first set the central axis of the CT scan.

Setting the central axis of the CT imaging may be performed by adjusting the X axis using the rotary arm driving means 280 and the Y axis and the Z axis using the jaw support member 260. The X-axis adjustment means that the rotary arm 250 is driven in the direction in which the rotary arm support member 240 is connected to the elevating member 230 by using the rotary arm driving means 280. . The Y-axis adjustment is performed by driving the jaw support member 260 in a direction perpendicular to the lifting direction of the elevating member 230, and the Z-axis adjustment causes the jaw support member 260 to move up and down. It is performed by driving in the lifting direction of (230).

 Looking at the step of setting the central axis of the CT imaging step by step, the first adjustment step to perform any one of the X-axis adjustment, Y-axis adjustment and Z-axis adjustment, the axis adjustment performed in the first adjustment step The center axis is set through a second adjustment step for performing any one of the remaining two axis adjustments and a third adjustment step for performing the remaining axis adjustments except the axis adjustments performed in the first adjustment step and the second adjustment step. do. Here, the order of adjustment of each axis can be variously selected and adjusted as needed.

Therefore, X axis adjustment → Y axis adjustment → Z axis adjustment, X axis adjustment → Z axis adjustment → Y axis adjustment, Y axis adjustment → X axis adjustment → Z axis adjustment, Y axis adjustment → Z axis adjustment → X axis adjustment, The center axis may be set in any of the order of Z axis adjustment → X axis adjustment → Y axis adjustment → Z axis adjustment → Y axis adjustment → X axis adjustment.

In addition, when the center axis setting is not made correctly even after the first adjustment, the second adjustment, and the third adjustment step, the predetermined axis adjustment necessary for the X axis adjustment, the Y axis adjustment, and the Z axis adjustment may be performed again. . That is, correction of the central axis setting is possible.

In addition, the same axis adjustment may be performed again after performing any one of the X axis adjustment, the Y axis adjustment, and the Z axis adjustment or after performing the two axis adjustment. For example, X axis adjustment → Y axis adjustment → X axis adjustment → Z axis adjustment, X axis adjustment → Y axis adjustment → X axis adjustment → Y axis adjustment → Z axis adjustment and the like are possible.

As described above, after setting the central axis of the CT imaging by adjusting the X axis using the rotation arm driving means 280 and the Y axis and the Z axis using the jaw support member 260, the set center axis is referred to. The rotary arm 280 is rotated to perform CT imaging. That is, the rotation arm driving means 280 pivotally drives the rotation arm 250 using the central axis as the rotation axis to perform CT imaging. The rotary arm 250 may rotate 360 ° around the head of the patient.

At this time, the X-ray light source unit 252 generates X-rays and irradiates predetermined teeth of a patient to be photographed. The X-ray sensor 251 disposed opposite to the X-ray light source unit 252 detects the X-rays generated by the X-ray light source unit 252 to acquire the predetermined dental image and then transmits the acquired image to the outside. . The tooth image of the patient transmitted to the outside is output after reconstructing the 3D image.

According to the present invention as described above, in setting the central axis of the CT imaging, since the rotary arm drive means performs only the first axis adjustment, the mechanical configuration of the rotary arm support member portion connected to the upper portion of the elevating member will be simplified. In addition, the volume and weight are reduced, providing the advantage that the X-ray CT imaging device can be mechanically stable. In addition, it is possible to set the central axis through the adjustment of the three axes without the patient moving directly, there is an effect that allows the patient to take a picture in a comfortable state.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below You can do it.

Claims (7)

Base; A support pillar installed on the base; An elevating member installed to elevate and displace in the vertical direction on the support column; A rotary arm support member connected to an upper portion of the elevating member; An X-ray light source unit and an X-ray sensor that detects X-rays generated by the X-ray light source unit are disposed to face each other and are supported by the rotary arm support member; Rotation arm driving means interposed between the rotation arm support member and the rotation arm to pivotally drive the rotation arm; And And a jaw support member connected to a lower portion of the elevating member. The rotary arm driving means drives the rotary arm in a direction in which the rotary arm supporting member is connected to the elevating member, and the jaw supporting member is driven in the elevating direction of the elevating member separately from the elevating member. X-ray CT imaging apparatus, characterized in that for driving in the transverse direction perpendicular to the lifting direction of the lifting member. The method of claim 1, The X-ray CT imaging device And a head fixing means positioned between the X-ray light source and the X-ray sensor and connected to a predetermined portion of the rotation arm support member. The method of claim 2, The head fixing means is X-ray CT imaging apparatus, characterized in that further comprising means for adjusting the width according to the size of the head of the patient. X-ray CT imaging is performed using an X-ray CT imaging apparatus having a base, a support column, a lifting member, a rotating arm supporting member, a rotating arm having an X-ray light source unit and an X-ray sensor, a rotating arm driving means, and a jaw supporting member. In the way, Positioning a jaw of a patient on a jaw support member connected to a lower portion of the elevating member; Setting a central axis of a CT scan at a predetermined position of a patient's tooth to be photographed; And And performing CT imaging by pivoting the rotary arm based on the set central axis. The setting of the central axis of the CT imaging is performed by adjusting the X axis using the rotary arm driving means and the Y axis and the Z axis using the jaw support member. The method of claim 4, wherein The X-axis adjustment is performed by driving the rotary arm in a direction in which the rotary arm support member is connected to the elevating member by using the rotary arm driving means, and the Y-axis adjustment is performed by the jaw support member of the elevating member. And driving in the lateral direction perpendicular to the lifting direction, wherein the Z-axis adjustment is performed by driving the jaw support member in the lifting direction of the lifting member. The method of claim 5, Setting the central axis of the CT scan at a predetermined position of the patient teeth A first adjustment step of performing any one of the X axis adjustment, the Y axis adjustment, and the Z axis adjustment; A second adjustment step of performing any one of the two axis adjustments except the axis adjustment performed in the first adjustment step; And a third adjustment step of performing adjustment of the remaining axes except for the adjustment of the axes performed in the first adjustment step and the second adjustment step. The method of claim 6, And performing an X-axis adjustment during the X-axis adjustment, the Y-axis adjustment, and the Z-axis adjustment again after the first adjustment, the second adjustment, and the third adjustment step.

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