JPWO2012060063A1 - Dental intraoral X-ray imaging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental intraoral X-ray imaging apparatus capable of holding without depending on a subject's occlusion. A dental intraoral X-ray imaging apparatus includes a retaining substrate. At the time of radiography using the X-ray apparatus, a photoreceptor holding portion is provided at an end portion of the retaining substrate that is inserted into the oral cavity, and holds an X-ray light receiving portion having an X-ray imaging element. A gripping part is provided. The gripping part includes a bearing part attached to the back surface of the photoreceptor holding part, a ball that is supported by the bearing part, an arm part that is connected to the ball, and an arm part that is connected to the arm part. And a grip connected via the arm portion. The connecting part can freely change the angle formed by the arm part and the other arm part. By holding the grip, the photoreceptor holding portion is held in a state where the angle formed by the arm portion and the imaging surface of the X-ray imaging device can be adjusted. The grip has a power source for driving the X-ray image sensor. [Selection] Figure 2

Description

  The present invention relates to a dental intraoral X-ray imaging apparatus.

  As in Patent Document 1, a dental intraoral X-ray auxiliary tool (indicator) used in imaging of a tooth using an X-ray apparatus has been proposed. A dental intraoral X-ray assisting tool is provided with a flat retaining substrate and an X-ray light receiving portion provided at an end of a portion to be inserted into the oral cavity of the retaining substrate during imaging and including an X-ray imaging device. A light receiving body holding part and a guide part (ring) provided at a position facing the light receiving body holding part through the retaining substrate and used for positioning the X-ray irradiation port are provided.

JP 2004-174162 A

  However, the holding of the dental intraoral X-ray apparatus is based on the subject's occlusion, and there is a problem that the holding cannot be performed well when the subject cannot bite.

  Therefore, the objective of this invention is providing the dental intraoral X-ray imaging apparatus which can hold | maintain irrespective of a test subject's occlusion.

  A dental intraoral X-ray imaging apparatus according to the present invention is provided at the end of a retaining substrate and a portion of the retaining substrate that is inserted into the oral cavity during imaging using the X-ray device, and has an X-ray imaging device. A photoreceptor holding part for holding an X-ray light receiving part and a gripping part are provided, and the gripping part is connected to a bearing part attached to the back surface of the photoreceptor holding part, a ball supported by the bearing part, and the ball. And a grip that is connected to the arm part or connected to the arm part via the connecting part or another arm part. The connecting part has an angle between the arm part and the other arm part. It can be freely changed. By gripping the grip, the photoreceptor holding portion is held in a state where the angle formed by the arm portion and the imaging surface of the X-ray imaging device can be adjusted. A power source for driving the element is included.

  The grip of the grip part may be held by the subject or may be gripped by an operator such as a dentist. Therefore, even if the subject cannot successfully bite, the X-ray light receiving part, etc. Can be maintained in the oral cavity. In addition, since the grip (holding substrate and photoreceptor holding portion) other than the gripping portion of the dental intraoral X-ray imaging apparatus is held by gripping, the holding substrate or the like can be compared with the form held by occlusion. Even if the weight increases, it has an advantage that it can be easily held.

  In addition, the grip of the grip portion is less limited in size than the holding substrate and the photoreceptor holding portion, and it is easy to secure a space for incorporating an electrical component such as a battery inside. Also, by collecting as much electrical parts as possible inside the grip, it becomes possible to lighten the members other than the gripping part of the dental intraoral X-ray imaging device (holding substrate and photoreceptor holding part), and grip the grip. Then, in a stable state, it becomes possible to hold members (a retaining substrate and a photoreceptor holding portion) other than the grip portion of the dental intraoral X-ray imaging apparatus. For this reason, an apparatus that performs image processing of an image signal obtained by the X-ray light receiving unit may be incorporated in the grip.

  A holding substrate, a photoreceptor holding portion for holding an X-ray light receiving portion having an X-ray imaging device, provided at an end of a portion to be inserted into the oral cavity of the holding substrate at the time of imaging using an X-ray apparatus, and gripping The gripping portion includes a bearing portion attached to the bottom surface of the retaining substrate, a ball supported by the bearing portion, an arm portion connected to the ball, and an arm portion connected to the arm portion. And a grip connected via another arm, and the connecting portion can freely change the angle formed by the arm and the other arm. The holding substrate is held in a state where the angle formed by the portion and the holding substrate can be adjusted, and the grip has a power source for driving the X-ray imaging device.

  The members other than the grip portion of the dental intraoral X-ray imaging apparatus (holding substrate and photoreceptor holding portion) are held by gripping the grip portion via a ball joint provided on the back surface of the photoreceptor holding portion. However, it may be performed by gripping the gripping part via a ball joint provided on the bottom surface of the retaining substrate. In this case, since all the members constituting the gripping part can be positioned outside the oral cavity even during photographing, the gripping part can hold the holding substrate with few arms and connecting parts. Become.

  Preferably, the grip has a communication unit for wirelessly transmitting an image signal obtained by the X-ray imaging device to the image processing apparatus.

  Preferably, the grip includes an image processing unit that performs image processing on an image signal obtained by the X-ray imaging device.

  Preferably, the connection portion is provided with a meshing clutch, and the angle formed by the arm portion and the other arm portion is freely adjusted via the meshing clutch.

  A dental intraoral X-ray imaging system according to the present invention has an X-ray imaging device provided at the end of a retaining substrate and a portion of the retaining substrate that is inserted into the oral cavity during imaging using an X-ray apparatus. A dental intraoral X-ray imaging apparatus having a photoreceptor holding part for holding an X-ray receiving part and a gripping part, wherein the gripping part is a bearing part attached to the back surface of the photoreceptor holding part, and a bearing part A ball supported by the ball, an arm connected to the ball, and a grip connected to the arm or connected to the arm via the connecting part or another arm. The angle between the arm and the other arm can be freely changed. By holding the grip, the angle between the arm and the imaging surface of the X-ray image sensor can be adjusted. The grip is provided with a power source for driving the X-ray imaging device and an X-ray imaging And a viewing device for observing the X-ray image having a display unit for displaying an X-ray image based on the image signal obtained by the device.

  Preferably, the grip includes a first communication unit for transmitting an image signal to the observation device wirelessly.

  More preferably, the observation device includes a second communication unit that communicates with the first communication unit, and the second communication unit has a separate structure from the observation device.

  Preferably, the observation apparatus includes an observation unit that is arranged in a movable state at an upper portion of the display unit and includes a first observation filter and a second observation filter. When the first X-ray image for observing with one eye of the observer and the second X-ray image for observing with the other eye of the observer are displayed in combination, the one eye of the observer is The observation unit is arranged at the first position so that the first X-ray image can be seen through the first observation filter and the other eye of the observer can be seen through the second observation filter. If not, the observation unit is arranged at the second position so that both eyes of the observer can see the display unit without passing through the first observation filter and the second observation filter.

  As described above, according to the present invention, it is possible to provide a dental intraoral X-ray imaging apparatus that can be held without depending on the subject's occlusion.

It is a block diagram of the dental intraoral X-ray imaging system in this embodiment. It is a perspective view of a dental intraoral X-ray imaging system when a first guide ring is attached. It is a perspective view of a dental intraoral X-ray imaging system when a second guide ring is attached. It is a perspective view of a dental intraoral X-ray imaging apparatus when a 1st guide ring is attached. It is a perspective view of a dental intraoral X-ray imaging apparatus when a 2nd guide ring is attached. It is a side view which shows the structure of a dental intraoral X-ray imaging apparatus and a 2nd X-ray apparatus when a holding part is attached to a photoreceptor holding | maintenance part. It is a side view which shows the structure of a dental intraoral X-ray imaging apparatus and a 2nd X-ray apparatus in the state to which the holding part was attached to the photoreceptor holding | maintenance part, and the 1st waterproof cover and the 2nd waterproof cover were attached. It is a side view which shows the detail of the internal structure of a photoreceptor holding | maintenance part, and a holding part. It is a side view which shows the structure of a dental intraoral X-ray imaging apparatus and a 2nd X-ray apparatus when a holding part is attached to the bottom face of a retention board | substrate. It is a perspective view of a 1st X-ray apparatus. It is a perspective view of a 2nd X-ray apparatus. It is the figure which looked at the structure of the dental intraoral X-ray imaging apparatus when a 1st guide ring is attached, and the 1st X-ray apparatus from the upper direction of the retention board | substrate. It is the figure which looked at the structure of a dental intraoral X-ray imaging apparatus when a 2nd guide ring is attached, and the 2nd X-ray apparatus from the upper direction of the retention board | substrate. It is a perspective view of a dental intraoral X-ray imaging apparatus showing a form in which a connection part is a clutch mechanism and a cable is exposed from the back and wired to an arm part. It is the figure which looked at the dental intraoral X-ray imaging apparatus of FIG. 14 from upper direction. It is the figure which attached the one waterproof cover to the dental intraoral X-ray imaging apparatus of FIG. 14, and was seen from upper direction.

  Hereinafter, the configuration of the dental intraoral X-ray imaging system in the present embodiment will be described with reference to the drawings. The dental intraoral X-ray imaging system 1 according to this embodiment includes a first X-ray apparatus 50a (or a second X-ray apparatus 50b), a dental intraoral X-ray imaging apparatus 100, and an observation apparatus 200 (FIGS. 1 to 1). (See FIG. 3).

  The dental intraoral X-ray imaging apparatus 100 includes a retaining substrate 10, a gripping part 19, a photoreceptor holding part 20, a first guide ring (guide part) 30a, a second guide ring (guide part) 30b, and a first display part. 40 (see FIG. 2 and FIG. 3), which constitute a dental intraoral X-ray imaging aid (indicator).

  Next, the details of the first X-ray apparatus 50a, the second X-ray apparatus 50b, and the dental intraoral X-ray imaging apparatus 100 will be described.

  The retaining substrate 10 includes a main body portion 11, a rotating shaft 12, an angle display portion 13, and a guide holding portion 15 that are formed in a flat plate shape. In the present embodiment, the main body 11 of the retaining substrate 10 will be described as having a substantially L-shape when viewed from the top for photographing the back teeth, but having a linear shape for photographing the front teeth. It is good (not shown).

  The rotating shaft 12 is connected to the angle display unit 13 and the photoreceptor holding unit 20, and the rotational movement around the rotating shaft 12 of the photoreceptor holding unit 20 is transmitted to the angle display unit 13 via the rotating shaft 12. The angle display unit 13 is rotated. Similarly, the rotational movement around the rotation axis 12 of the angle display unit 13 is transmitted to the photoreceptor holding unit 20 via the rotation axis 12 to rotate the photoreceptor holding unit 20.

  The angle display unit 13 is attached to a portion of the main body 11 of the retaining substrate 10 that is not inserted into the oral cavity so as to be visible from outside the oral cavity when the photoreceptor holding unit 20 is inserted into the oral cavity, and has a cylindrical shape. As the information related to the angle θ (see FIG. 6) formed by the light receiving member holding part 20 and the main body part 11 of the retaining substrate 10 on the cylindrical cylindrical part (side surface) or top surface, A scale 14 including a mark line is attached.

  In the present embodiment, as information related to the angle θ, the scale 14 is described using information with seven mark lines. 4 and 5 show a state in which the sixth mark line is located at a position protruding from the upper surface of the main body 11 of the retaining substrate 10 and one mark line is hidden behind the main body 11. Each mark line is marked with a different color, a different character, etc. so that it can be easily distinguished.

  Based on the positional relationship between the scale 14 and the main body portion 11 of the retaining substrate 10, that is, based on the mark line closest to the reference position (for example, the upper surface of the main body portion 10 of the retaining substrate 10), It becomes possible to read information on the angle θ formed between the invisible photoreceptor holding part 20 and the main body part 11 of the holding substrate 10, and the first X-ray device 50a in the positioning part 31 of the first guide ring 30a described later, It is used for alignment when the second X-ray device 50b is arranged in the positioning portion 31 of the two guide rings 30b.

  The guide holding portion 15 is attached to an end portion of the main body portion 11 of the retaining substrate 10 that is not inserted into the oral cavity, and holds the first guide ring 30a or the second guide ring 30b in a detachable state.

  The photoreceptor holding unit 20 is a plate-like member that incorporates an X-ray light receiving unit 25 having an X-ray imaging device, a reference scale 26, an imaging device substrate 27, and a yoke 29, and is provided in the oral cavity of the main body 11 of the retaining substrate 10. In order to adjust the incident angle of the X-ray from the X-ray device 50, the rotary shaft 12 is held in a rotatable state.

  It is desirable that the portion in contact with the palate in the oral cavity, that is, the upper surface of the photoreceptor holding unit 20 and the upper portion of the front surface are made of a relatively soft material such as rubber. Thereby, it becomes possible to relieve a subject's pain by contacting with a palate compared with the case where this part is made of a hard material. When the photoreceptor holding unit 20 and the X-ray light receiving unit 25 are separate, it is necessary to examine the material above them, but when the photoreceptor holding unit 20 incorporates the X-ray receiving unit 25 If only the material of the upper part of the photoreceptor holding | maintenance part 20 is considered, it will become possible to relieve the test subject's pain by contacting with a palate.

  The X-ray light receiving unit 25 includes an X-ray imaging device such as a scintillator that converts X-rays into visible light and a CCD that converts the visible light into electric charges. The reference scale 26 is made of a material having a certain length of line segment and a constant interval such as a 1 mm unit on the line segment, which does not pass X-rays, and is positioned in front of the imaging surface of the X-ray light receiving unit 25 ( (Between the X-ray device 50 and the X-ray light receiving unit 25).

  The image pickup device substrate 27 is an electric circuit for driving the X-ray light receiving unit 25 and is disposed behind the X-ray light receiving unit 25. However, the members constituting the electric circuit for driving the X-ray light receiving unit 25 may be arranged in the grip 19e of the gripping unit 19 and the image processing unit 230 of the observation apparatus 200, which will be described later. Power supply and signal transmission / reception to the X-ray light receiving unit 25 are wired inside the main body 11 of the retaining substrate 10 via the image pickup device substrate 27 and connected to the gripping unit 19 via the cable 16.

  The yoke 29 is a thin plate made of a soft magnetic material, and is disposed behind the image sensor substrate 27 (the rearmost surface of the photoreceptor holding unit 20). The yoke 29 serves to connect the bearing portion 19a and the photoreceptor holding portion 20 with the magnetic force of a magnet 19a1 of the bearing portion 19a described later, and the magnetic field of the magnet 19a1 does not leak to the surroundings (particularly the X-ray light receiving portion 25 side). To play a role.

  The connection between the gripping part 19 and the photoreceptor holding part 20 is made by the magnet 19a1 of the bearing part 19a pulling the yoke 29 of the photoreceptor holding part 20 by a magnetic force. For this reason, unless a pulling force exceeding the magnetic force is applied, these connection states are not released, and the gripping part 19 stably holds a part other than the gripping part 19 of the dental intraoral X-ray imaging apparatus 100. It becomes possible to do. Further, if there is a pulling force exceeding the magnetic force, these connection states can be released, so that there is a merit that the attachment and detachment can be easily performed as compared with a form using screws or the like. In particular, since the grip portion 19 and the photoreceptor holding portion 20 can be attached and detached while the ball 19b, which is a member constituting the ball joint, and the tray 19a2 are attached, it is possible to prevent wear and deterioration when the portion is removed. It becomes possible. In addition, when the connection between the holding part 19 and the photoreceptor holding part 20 is based on a magnetic force, there is a merit that it can be easily attached / detached, but the bearing part 19a of the holding part 19 and the photoreceptor holding part 20 can be easily attached / detached. May be fixed or integrally configured.

  The grip part 19 includes a bearing part 19a, a ball 19b, first to third arm parts 19c1 to 19c3, a first connection part 19d1, a second connection part 19d2, and a grip 19e (see FIG. 6).

  In the bearing portion 19a, a magnet 19a1 is provided at a portion facing the back surface (the side where the yoke 29 is provided) of the photoreceptor holding portion 20, and a tray 19a2 of a ball 19b is provided on the opposite side (see FIG. 8).

  The first arm portion 19c1 is a rod-like member having one end portion fixed to the ball 19b and the other end portion connected to the first connection portion 19d1. The angle formed between the first arm portion 19c1 and the bearing portion 19a can be freely changed via the ball 19 and the tray 19a2 constituting the ball joint.

  The second arm portion 19c2 is a rod-like member having one end connected to the first connection portion 19d1 and the other end connected to the second connection portion 19d2. The third arm portion 19c3 is a rod-like member having one end connected to the second connection portion 19d2 and the other end fixed to the grip 19e. The first connecting portion 19d1 holds these in a state where the angle formed by the first arm portion 19c1 and the second arm portion 19c2 can be freely changed and the angle can be fixed. The second connecting portion 19d2 holds these in a state where the angle formed by the second arm portion 19c2 and the third arm portion 19c3 can be freely changed and the angle can be fixed.

  By changing the positional relationship between the first to third arm portions 19c1 to 19c3, it is possible to freely change the direction of the normal line of the imaging surface of the X-ray light receiving unit 25 with the grip 19e. . That is, when the user (operator or subject) holds the grip 19e, the photoreceptor holding unit 20 can be adjusted in a state in which the angle formed by the first arm portion 19c1 and the imaging surface of the X-ray light receiving unit 25 can be adjusted. Retained.

  The grip 19e is connected to the image sensor substrate 27 and the first display unit 40 via the cable 16, and incorporates a first communication unit 19e1 and a battery 19e2.

  The first communication unit 19e1 transmits and receives signals to and from the second communication unit 290 by wireless (wireless LAN, Bluetooth (registered trademark), etc.). Specifically, a control signal from the image processing unit 230 is transmitted to the imaging operation of the X-ray light receiving unit 25, an image signal obtained by the X-ray light receiving unit 25 is transmitted to the image processing unit 230, The image data generated by the image processing unit 230 based on the image signal is transmitted to the first display unit 40.

  The battery 19e2 supplies power to each unit (the first communication unit 19e1, the X-ray light receiving unit 25, the image sensor substrate 27, the first display unit 40, etc.) of the dental intraoral X-ray imaging apparatus 100.

  During imaging using the first X-ray device 50a or the second X-ray device 50b, a part of the retaining substrate 10 and the photoreceptor holding unit 20 in which the X-ray light receiving unit 25 is built are inserted into the oral cavity of the subject, The dental intraoral X-ray imaging apparatus 100 is held by the grip portion 19 in a state where the tooth axis of the imaging target tooth and the retaining substrate 10 are perpendicular to each other. At this time, the angle display unit 13, the guide holding unit 15, the first guide ring 30a (or the second guide ring 30b) held by the guide holding unit 15, and the first display unit 40 are located outside the oral cavity. However, the angle formed between the tooth axis of the imaging target tooth and the retaining substrate 10 may not be vertical.

  The grip 19e of the grip portion 19 may be held by the subject or may be held by an operator such as a dentist. Therefore, even when the subject cannot perform occlusion well, X-ray reception is possible. The part 25 and the like can be maintained in the oral cavity. Moreover, since members (holding substrate 10 and photoreceptor holding part 20) other than the holding part 19 of the dental intraoral X-ray imaging apparatus 100 are held by holding the grip 19e, it is compared with a form held by occlusion. Further, there is an advantage that holding can be easily performed even if the weight of the retaining substrate 10 or the like is increased.

  In addition, the grip 19e of the grip portion 19 is less limited in size than the retaining substrate 10 and the photoreceptor holding portion 20, and it is easy to secure a space for incorporating an electrical component such as the battery 19e2. Further, by collecting as many electrical components as possible inside the grip 19e, it is possible to reduce the members other than the grip portion 19 (the retaining substrate 10 and the photoreceptor holding portion 20) of the dental intraoral X-ray imaging apparatus 100. Thus, when gripping the grip 19e, it becomes possible to hold the members (the retaining substrate 10 and the photoreceptor holding portion 20) other than the gripping portion 19 of the dental intraoral X-ray imaging apparatus 100 in a stable state. For this reason, the apparatus that performs image processing of the image signal obtained by the X-ray light receiving unit 25 may be incorporated in the grip 19e.

  Further, since the yoke 29 is provided between the magnet 19a1 and the X-ray light receiving unit 25, there is little possibility that the magnetic force affects the X-ray light receiving unit 25.

  In addition, since the magnet 19a1 and the ball joint (the ball 19b and the tray 19a2) are configured separately, the magnet 19a1 can be formed in a shape that does not require special processing such as a rectangular parallelepiped.

  Further, at the time of imaging, a waterproof cover is provided on a portion of the dental intraoral X-ray imaging apparatus 100 that is inserted into the oral cavity of the subject (part of the retaining substrate 10, part of the photoreceptor holding unit 20, part of the gripping unit 19). It is desirable to be covered. Specifically, a part of the retaining substrate 10 and the photoreceptor holding part 20 are covered with the first waterproof cover 61, and a part of the grip part 19 including the bearing part 19 a and the ball 19 b is the second waterproof cover 62. (See FIG. 7). For this reason, the bearing part 19a and the photoreceptor holding | maintenance part 20 are made into the state approached by the magnetic force in the state which pinched | interposed the 1st waterproof cover 61 and the 2nd waterproof cover 62.

  When a force is applied so that the first waterproof cover 61 and the second waterproof cover 62 are separated from each other, it is possible to easily release the state in which the bearing portion 19a and the photoreceptor holding portion 20 are close to each other by magnetic force. In addition, it is possible to prevent the subject's saliva and the like from entering the connecting portion between the photoreceptor holding unit 20 and the retaining substrate 10 and without cleaning the retaining substrate 10 and the photoreceptor holding unit 20. There is an advantage that it can be used for other subjects only by replacing the first waterproof cover 61 and the second waterproof cover 62.

  Note that members (holding substrate 10 and photoreceptor holding unit 20) other than the grasping unit 19 of the dental intraoral X-ray imaging apparatus 100 are held via a ball joint provided on the back surface of the photoreceptor holding unit 20. Although it may be performed by gripping the portion 19, it may be performed by gripping the gripping portion 19 via a ball joint provided on the bottom surface of the retaining substrate 10 (see FIG. 9). FIG. 9 shows a state in which one arm portion 19c is attached to the ball 19b and the grip 19e, and the angle between the arm portion 19c and the retaining substrate 20 can be adjusted by gripping the grip 19e. Thus, members other than the grip portion 19 of the dental intraoral X-ray imaging apparatus 100 (the retaining substrate 10 and the photoreceptor holding portion 20) are held. In this case, since all the members constituting the grip portion 19 can be positioned outside the oral cavity even during photographing, there are few arm portions and connection portions (for example, one arm portion as shown in FIG. 9). Thus, the holding portion 19 can hold the holding substrate 10 without the connection portion. Further, it is not necessary to cover the grip portion 19 with the second waterproof cover 62.

  In the state where the reamer is attached, the imaging target tooth cannot come into contact with the retaining substrate 10, so that a notch (or hole) 18 is provided at a position facing the imaging target tooth during imaging so as to avoid the reamer. The form which provides can also be considered (refer FIG. 4, FIG. 5).

  The first guide ring 30a is provided at a position facing the photoreceptor holding unit 20 via the retaining substrate 10, and positioning of the X-ray apparatus in X-ray imaging for obtaining a normal X-ray image, specifically, It is used for positioning of the irradiation port 51a of the first X-ray device 50a. The first guide ring 30a has an oblong shape that is vertically long when viewed from the photoreceptor holding unit 20 side.

  The first guide ring 30a is located on a reference line LP that passes through the center of the imaging surface of the X-ray light receiving unit 25 and is perpendicular to the imaging surface when viewed from above the main body 10 of the retaining substrate 10, and is first from the imaging surface. It is used to position the first X-ray device 50a including the X-ray source LS so that the X-ray source LS is disposed at a position separated by one distance (200 mm) (see FIG. 12).

  The first X-ray device 50a is a device that emits X-rays from one X-ray light source LS through the irradiation port 51a, and is used when obtaining a two-dimensional X-ray image.

  The irradiation port 51a of the first X-ray apparatus 50a has a surface perpendicular to the central axis LX of the X-ray bundle emitted from the X-ray source LS.

  The irradiation port 51a of the first X-ray device 50a is installed at a predetermined position of the first guide ring 30a (a position corresponding to the positioning mark of the positioning portion 31 corresponding to the mark line of the scale 14 closest to the reference position). In this case, the first guide ring 30a is viewed from the side so that the central axis LX of the X-ray bundle emitted from the X-ray source LS passes through the center of the imaging surface of the X-ray light receiving unit 25 when viewed from above. And has a substantially arc shape, and has a linear shape when viewed from above (see FIG. 12).

  For this reason, the reference line LP passing through the center of the imaging surface of the X-ray light receiving unit 25 and perpendicular to the imaging surface and the X-ray bundle emitted from the X-ray source LS when viewed from above the main body 11 of the retaining substrate 10. The irradiation port 51a is disposed in the vicinity of the first guide ring 30a so as to overlap with the central axis LX.

  The width of the first guide ring 30a is substantially the same as the diameter of the irradiation port 51a of the first X-ray device 50a.

  A linear first index 53a parallel to the central axis LX when viewed from the side is provided on the side of the first X-ray apparatus 50a, and the positioning of the first index 53a and the positioning portion 31 of the first guide ring 30a is performed. By making the mark coincide with the mark, the alignment can be easily performed (see FIG. 10).

  A positioning portion 31 is provided on the side of the first guide ring 30a. In the positioning unit 31, information (a plurality of positioning marks) corresponding to the mark line of the scale 14 of the angle display unit 13 is described. It is desirable that the mark line of the scale 14 in correspondence and the positioning mark of the positioning unit 31 are shown in the same color.

  The central axis LX of the X-ray bundle emitted from the X-ray source LS installed in alignment with the positioning mark corresponding to the mark line on the scale 14 that is closest to the main body portion 11 of the retaining substrate 10 is the main body of the retaining substrate 10. When viewed from the side of the part 11, it can be made substantially perpendicular to the bisector of the surface including the imaging surface of the X-ray light receiving unit 25 built in the photoreceptor holding unit 20 and the tooth axis of the imaging target tooth. As described above, a plurality of positioning marks are provided on the positioning portion 31.

  In the present embodiment, seven positioning marks are provided on the positioning unit 31 corresponding to the seven mark lines provided on the scale 14 of the angle display unit 13.

  When the angle θ is small, that is, when the imaging surface of the X-ray light receiving unit 25 is nearly parallel to the main body 11 of the holding substrate 10, the angle display unit corresponding to the positioning mark away from the guide holding unit 15. The mark line of the 13 scales 14 is close to the reference position.

  When the angle θ is large, that is, when the imaging surface of the X-ray light receiving unit 25 is close to the main body 11 of the holding substrate 10, the angle display unit 13 corresponding to the positioning mark close to the guide holding unit 15. The mark line of the scale 14 is close to the reference position.

  The 1st guide ring 30a is hold | maintained in the state which can be attached or detached to the guide holding | maintenance part 15 via the 1st attachment part 33a provided in the lower part of the ring. The guide holding portion 15 has a positioning member and a detachable fixing mechanism (not shown) for fixing the first mounting portion 33a of the first guide ring 30a to a predetermined position at the time of mounting. Is desirable.

  The second guide ring 30b is provided at a position facing the photoreceptor holding unit 20 via the retaining substrate 10, and positioning of the X-ray apparatus in X-ray imaging for obtaining an X-ray image for stereoscopic viewing, specifically Is used for positioning the first irradiation port 51b1 and the second irradiation port 51b2 of the second X-ray apparatus 50b. The second guide ring 30b has a vertically long substantially oval shape when viewed from the photoreceptor holding unit 20 side.

  The second guide ring 30b is separated from the reference line LP perpendicular to the imaging surface by a second distance (30 mm) through the center of the imaging surface of the X-ray light receiving unit 25 when viewed from above the main body 11 of the retaining substrate 10. The first X-ray source LS1 is disposed at an eleventh position P11 that is separated from the imaging surface by a first distance (200 mm), and the second X is set at a twelfth position P12 that is symmetric with respect to the eleventh position P11 with the reference line LP as an axis of symmetry. It is used to position the second X-ray device 50b including the first X-ray source LS1 and the second X-ray source LS2 so that the radiation source LS2 is arranged (see FIG. 13).

  The second X-ray device 50b emits X-rays from two X-ray light sources (first X-ray source LS1 and second X-ray source LS2) through irradiation ports (first irradiation port 51b1 and second irradiation port 51b2). It is an apparatus and is used when obtaining a three-dimensional X-ray image. The first X-ray source (electron tube) LS1 that emits X-rays from the first irradiation port 51b1 and the second X-ray source (electron tube) LS2 that emits X-rays from the second irradiation port 51b2 are approximately the distance between human eyes. The central axis of the X-ray bundle (first central axis LX1) emitted from the target of the first X-ray light source LS1 and the second X-ray source, which are arranged so as to be separated by the same 60 mm (twice the second distance). The central axis (second central axis LX2) of the X-ray beam emitted from the target of LS2 is a position away from each electron tube by a first distance (200 mm), that is, the first irradiation port 51b1 and the second irradiation port 51b2. When arranged in the vicinity of the second guide ring 30b, the direction of each irradiation port and X-ray source (electron tube) is set so as to intersect in the vicinity of the X-ray light receiving unit 25.

  Different X-ray images can be obtained by X-ray irradiation from different positions (11th position P11, 12th position P12), and a stereoscopic X-ray image can be observed by combining these X-ray images. It becomes possible to do. The orientations of the first X-ray source LS1 and the second X-ray source LS2 are adjusted so that the X-ray bundle axes (first central axis LX1, second central axis LX2) intersect at a position separated by a first distance (200 mm). If imaging is performed so that the imaging surface comes to such an intersecting position, it is possible to reduce the possibility that X-rays are unnecessarily irradiated to a place away from the imaging surface of the X-ray light receiving unit 25.

  The first irradiation port 51b1 and the second irradiation port 51b2 are continuous to form one hole.

  The first irradiation port 51b1 of the second X-ray apparatus 50b has a surface perpendicular to the central axis (first central axis LX1) of the X-ray bundle emitted from the first X-ray source LS1, and the second irradiation port 51b2 It has a surface perpendicular to the central axis (second central axis LX2) of the X-ray bundle emitted from the 2X-ray source LS2.

  The first irradiation port 51b1 and the second irradiation port 51b2 of the second X-ray apparatus 50b are used as positioning marks of the positioning portion 31 corresponding to the predetermined position of the second guide ring 30b (the mark line of the scale 14 closest to the reference position). The center axis of the X-ray bundle (first central axis LX1) emitted from the first X-ray source LS1 and the X-ray bundle emitted from the second X-ray source LS2 when viewed from above. The second guide ring 30b is substantially arc-shaped when viewed from the side so that the central axis (second central axis LX2) of the two passes through the center of the imaging surface of the X-ray light receiving unit 25. The side where the first irradiation port 51b1 and the second irradiation port 51b2 are in contact has a V shape (see FIG. 13).

  For this reason, the first irradiation port 51b1 and the second irradiation port 51b2 are line-symmetric with respect to the reference line LP that passes through the center of the imaging surface of the X-ray light receiving unit 25 and is perpendicular to the imaging surface as viewed from above. It will be arranged in the vicinity of the second guide ring 30b due to the positional relationship.

  The width of the second guide ring 30b is wider than that of the first guide ring 30a.

  Note that a linear second index 53b parallel to the first central axis LX1 and the second central axis LX2 as viewed from the side is provided on the side of the second X-ray apparatus 50b, and the second index 53b and the second guide ring are provided. If the positioning mark of the positioning part 31 of 30b is made to coincide, positioning can be performed easily (see FIG. 11).

  A positioning portion 31 is provided on the side of the second guide ring 30b. The content of the positioning part 31 is the same as that of the positioning part 31 provided in the side part of the 1st guide ring 30a. In the positioning unit 31, information (a plurality of positioning marks) corresponding to the mark line of the scale 14 of the angle display unit 13 is described. It is desirable that the mark line of the scale 14 in correspondence and the positioning mark of the positioning unit 31 are shown in the same color.

  The central axis of the X-ray bundle emitted from the first X-ray source LS1 of the second X-ray apparatus 50b installed in alignment with the positioning mark corresponding to the mark line on the scale 14 that is closest to the main body 11 of the retaining substrate 10 ( The first central axis LX1) and the central axis (second central axis LX2) of the X-ray bundle emitted from the second X-ray source LS2 are viewed from the side of the main body 11 of the retaining substrate 10, and the photoreceptor holding unit 20 A plurality of positioning marks are provided on the positioning unit 31 so that the plane including the imaging surface of the X-ray light receiving unit 25 incorporated in the lens and the tooth axis of the tooth to be imaged can be substantially perpendicular to each other. It is done.

  In the present embodiment, seven positioning marks are provided on the positioning unit 31 corresponding to the seven mark lines provided on the scale 14 of the angle display unit 13, and in FIG. Of the two mark lines, the middle mark line is information representing the angle θ, and of the seven positioning marks of the positioning unit 31, the first irradiation port 51b1 of the second X-ray apparatus 50b is aligned with the middle mark line. And the state which installed the 2nd irradiation port 51b2.

  The 2nd guide ring 30b is hold | maintained in the state which can be attached or detached to the guide holding | maintenance part 15 via the 2nd attachment part 33b provided in the lower part of the ring. The guide holding portion 15 has a positioning member and a detachable fixing mechanism (not shown) for fixing the second mounting portion 33b of the second guide ring 30a to a predetermined position at the time of mounting. Is desirable.

  When the first mounting portion 33a and the second mounting portion 33b have the same size, the same positioning member and fixing mechanism are used for the first mounting portion 33a and the second mounting portion 33b. Can be used.

  The first display unit 40 is an X-ray image acquired by an imaging operation (two-dimensional imaging operation, first 3D imaging operation, second 3D imaging operation) or an X-ray image recorded on a recording medium (not shown). And is held (fixed) on the main body 11 of the retaining substrate 10.

  Next, details of the observation apparatus 200 will be described. The observation device 200 includes a first operation unit 210, a second operation unit 220, an image processing unit 230, a second display unit 240, a drive unit 260, an observation unit 270 (a first observation filter 271 and a second observation filter 272), a first 2 communication part 290 (refer to Drawing 1-Drawing 3).

  The first operation unit 210 is an input device used to input subject information or to give an instruction to start an imaging operation. For example, a numeric keypad or an arrow key for inputting a subject chart number is provided. Used.

  The second operation unit 220 is an input device used to switch the use mode of the observation apparatus 200. In the present embodiment, the second operation unit 220 acquires a two-dimensional X-ray image and displays the two-dimensional X-ray image. Mode, 3D imaging mode for acquiring 3D X-ray images and displaying such 3D X-ray images, 2D observation mode for displaying 2D X-ray images recorded on recording media, recorded on recording media There are five keys for switching to five use modes: a three-dimensional observation mode for displaying a three-dimensional image, and a white display mode in which the second display unit 240 is used as a shear stain.

  The image processing unit 230 includes a CPU and a DSP, controls each unit of the observation apparatus 200, performs image processing on an image signal obtained by the X-ray light receiving unit 25, and via the second communication unit 290. It communicates with the dental intraoral X-ray imaging apparatus 100.

  The second display unit 240 displays an X-ray image acquired by an imaging operation (two-dimensional imaging operation, three-dimensional imaging operation) or an X-ray image recorded on a recording medium. However, when the white display mode is set, a white image is displayed.

  The drive unit 260 rotates the observation unit 270 from the first position to the second position about the rotation shaft 261 based on the control of the image processing unit 230 according to the use mode. For this reason, the user uses the second operation unit 220 to select a use mode (two-dimensional imaging mode, two-dimensional observation mode, three-dimensional imaging mode, three-dimensional observation mode, white display mode). It is possible to automatically switch between a state in which the second display unit 240 is observed through the unit 270 and a state in which the second display unit 240 is observed without using the observation unit 270.

  Specifically, during the three-dimensional imaging mode and the three-dimensional observation mode, the transmission surface of the first observation filter 271 and the second observation filter 272 of the observation unit 270 is substantially parallel to the second display unit 240. The drive unit 260 moves the observation unit 270 (first position, see FIG. 3).

  In the two-dimensional imaging mode, the two-dimensional observation mode, and the white display mode, driving is performed so that the transmission surfaces of the first observation filter 271 and the second observation filter 272 of the observation unit 270 are substantially perpendicular to the second display unit 240. The unit 260 moves the observation unit 270 (second position, see FIG. 2).

  That is, for stereoscopic vision, the second display unit 240 combines a first X-ray image for observing with one eye of the observer and a second X-ray image for observing with the other eye of the observer. The first X-ray image can be seen through the first observation filter 271 and the second X-ray image can be seen through the second observation filter 272. The observation unit 270 is disposed at the first position (the transmission surfaces of the first observation filter 271 and the second observation filter 272 are substantially parallel to the second display unit 240). When stereoscopic viewing is not performed, the observation unit 270 is positioned at the second position (first position) so that both eyes of the observer can see the second display unit 240 without passing through the first observation filter 271 and the second observation filter 272. The transmission surfaces of the first observation filter 271 and the second observation filter 272 are arranged at a position substantially perpendicular to the second display unit 240.

  The observation unit 270 is a plate-like member and is arranged in a state where it can be moved in front of the display surface of the second display unit 240 (here, the upper part), and includes a first observation filter 271 and a second observation filter 272. A blue film is pasted on the first observation filter 271, and a red film is pasted on the second observation filter 272. In addition, although the form which the display surface of the 2nd display part 240 has faced upwards is demonstrated in this embodiment, the form which faces the diagonally upward direction or the horizontal direction may be sufficient.

  In the three-dimensional imaging mode and the three-dimensional observation mode, the transmission surface (the surface on which the red film or the blue film is pasted) of the first observation filter 271 or the second observation filter 272 is substantially the same as the display surface of the second display unit 240. The right eye of the observer (subject or operator) observes the second display unit 240 via the first observation filter 271, and the left eye displays the second display unit via the second observation filter 272. Observe 240.

  In the two-dimensional imaging mode, the two-dimensional observation mode, and the white display mode, the transmission surface (the surface on which the red film or the blue film is pasted) of the first observation filter 271 or the second observation filter 272 is the second display unit 240. The viewer (subject or operator) observes the second display unit 240 without going through the first observation filter 271 and the second observation filter 272.

  Note that the second communication unit 290 of the observation device 200 may be configured separately from the other parts of the observation device 200. In this case, the X-ray in which the dental intraoral X-ray imaging apparatus 100, the first X-ray apparatus 50a, and the like are placed in the second communication unit 290, and the surroundings are surrounded by a substance having a high ability to prevent radiation such as lead. It is possible to adopt a form that is arranged inside the radiographing room and connected to a part other than the second communication unit 290 of the observation apparatus 200 arranged outside the X-ray radiographing room via a wired cable (not shown). .

  Moreover, the observation apparatus 200 may be a tablet-type portable information terminal. In this case, the touch panel display unit (second display unit 240) can also serve as the first operation unit 210 and the second operation unit 220.

  Next, an operation procedure will be described.

  When acquiring a two-dimensional X-ray image, the second operation unit 220 is operated to set the two-dimensional imaging mode, and the first guide ring 30a is connected to the guide holding unit 15 via the first attachment unit 33a. Attached to. In a state where a part of the retaining substrate 10, the photoreceptor holding part 20, etc. are covered with the first waterproof cover 61 and a part of the grip part 19 is covered with the second waterproof cover 62, the first guide ring 30 a The part including the photoreceptor holding unit 20 of the dental intraoral X-ray imaging apparatus 100 to which is attached is inserted into the oral cavity of the subject having the imaging target tooth. The observation unit 270 is disposed at the second position.

  Based on the shape in the oral cavity of the subject, the position where the dental intraoral X-ray imaging apparatus 100 is inserted, the positional relationship between the photoreceptor holding unit 20 and the main body 11 of the retaining substrate 10 in the national cavity is determined. And the angle θ is determined.

  The user of the dental intraoral X-ray imaging apparatus 100 looks at the scale 14 of the angle display unit 13 and confirms the mark line closest to the reference position, and the mark line in the positioning unit 31 of the first guide ring 30a corresponds to the mark line. The irradiation port 51a of the first X-ray apparatus 50a is installed so that the first index 53a is aligned with the corresponding positioning mark.

  When a chart number of a predetermined number of digits (for example, 3 digits) is input using the first operation unit 210, the image processing unit 230 displays “Operate the first X-ray apparatus 50a on the second display unit 240. Then, start X-ray irradiation and press a specific key (for example, a return key) of the first operation unit 210 ”.

  When the specific key is pressed after starting X-ray irradiation from the first X-ray device 50a based on an operation by an operator or the like, the image processing unit 230 causes the second communication unit 290, the first communication unit to 19e1, the X-ray light receiving unit 25 performs an imaging operation (two-dimensional imaging operation) via the image pickup device substrate 27, and the X-ray image pickup device of the X-ray light receiving unit 25 images the visible light converted by the scintillator. .

  The image signal obtained by the two-dimensional imaging operation is sent to the image processing unit 230 via the imaging element substrate 27, the first communication unit 19e1, and the second communication unit 290. Here, the first display unit 40 and the second display unit Image processing for obtaining an X-ray image that can be displayed on the display unit 240 is performed to obtain two-dimensional image data that can be displayed on the first display unit 40 and the second display unit 240. Subject information such as a chart number is also registered in the two-dimensional image data. The subject information may be superimposed on the image, added to the header of the image data, or a part of the file name. May be used.

  The two-dimensional image data after the image processing is sent to the first display unit 40 via the second communication unit 290 and the first communication unit 19e1, and the first display unit 40 displays a two-dimensional X-ray image. The two-dimensional image data after image processing is sent to the second display unit 240, and the second display unit 240 displays a two-dimensional X-ray image.

  When observing a two-dimensional X-ray image recorded on a recording medium, the second operation unit 220 is operated to set the two-dimensional observation mode. The observation unit 270 is disposed at the second position. The image processing unit 230 causes the second display unit 240 to read out and display a list of the two-dimensional image data recorded on the recording medium, and further selects “two-dimensional image data to be observed using the first operation unit 210”. Please display ". When two-dimensional image data to be observed is selected using the first operation unit 210, the image processing unit 230 displays a two-dimensional X-ray image based on the selected two-dimensional image data on the first display unit 40 or the second display. Display on the unit 240.

  When acquiring a three-dimensional X-ray image, the second operation unit 220 is operated to set the three-dimensional imaging mode, and the second guide ring 30b is connected to the guide holding unit 15 via the second attachment unit 33b. The portion including the photoreceptor holder 20 of the dental intraoral X-ray imaging apparatus 100 to which the second guide ring 30b is attached is inserted into the oral cavity of the subject having the imaging target tooth. The observation unit 270 is disposed at the first position.

  Based on the shape in the oral cavity of the subject, the position where the dental intraoral X-ray imaging apparatus 100 is inserted, the positional relationship between the photoreceptor holding unit 20 and the main body 11 of the retaining substrate 10 in the national cavity is determined. And the angle θ is determined.

  The user of the dental intraoral X-ray imaging apparatus 100 looks at the scale 14 of the angle display unit 13 to confirm the mark line closest to the reference position, and the mark line in the positioning unit 31 of the second guide ring 30b is confirmed. The first irradiation port 51b1 and the second irradiation port 51b2 of the second X-ray apparatus 50b are installed so that the second index 53b is aligned with the corresponding positioning mark.

  In the second X-ray apparatus 50b, X-ray irradiation by the first X-ray source LS1 and X-ray irradiation by the second X-ray source LS2 are sequentially performed.

  When a chart number of a predetermined number of digits (for example, 3 digits) is input using the first operation unit 210, the image processing unit 230 displays “Operate the second X-ray apparatus 50b” on the second display unit 240. The X-ray irradiation by the first X-ray source LS1 is started and a specific key (for example, a return key) of the first operation unit 210 is pressed ”is displayed.

  When the specific key is pressed after starting the X-ray irradiation from the first X-ray source LS1 of the second X-ray apparatus 50b based on an operation by an operator or the like, the image processing unit 230 causes the second communication unit 290, the first communication unit 19e1 and the image pickup device substrate 27 are used to cause the X-ray light receiving unit 25 to perform an image pickup operation (first three-dimensional image pickup operation). The X-ray image pickup device of the X-ray light receiving unit 25 is a scintillator. The converted visible light is imaged.

  The image signal obtained by the first three-dimensional imaging operation is sent to the image processing unit 230 via the imaging element substrate 27, the first communication unit 19e1, and the second communication unit 290.

  Next, the image processing unit 230 displays, on the second display unit 240, “operation of the second X-ray device 50b to start X-ray irradiation by the second X-ray source LS2, and a specific key of the first operation unit 210. (For example, press the return key) "is displayed.

  When the specific key is pressed after starting the X-ray irradiation from the second X-ray source LS2 of the second X-ray apparatus 50b based on the operation of the operator or the like, the image processing unit 230 causes the second communication unit 290, the first communication unit 19e1 and the image pickup device substrate 27 are used to cause the X-ray light receiving unit 25 to perform an image pickup operation (second three-dimensional image pickup operation). The converted visible light is imaged.

  The image signal obtained by the second three-dimensional imaging operation is sent to the image processing unit 230 via the imaging element substrate 27, the first communication unit 19e1, and the second communication unit 290.

  The second X-ray device 50b includes an output device that outputs information that can distinguish between a state in which the first X-ray source LS1 emits X-rays and a state in which the second X-ray source LS2 emits X-rays. It is desirable. For example, a display member (not shown) that can distinguish the X-ray emission of the first X-ray source LS1 and the X-ray emission of the second X-ray source LS2 from the outside, or the observation device 200 (particularly image processing) from the second X-ray device 50b. A signal transmission member that outputs information on the unit 230) is conceivable. When the signal transmission member is used, the image processing unit 230 recognizes whether or not the X-ray emission of the first X-ray source LS1 and the second X-ray source LS2 is performed, and the image processing unit 230 performs the first processing. There is an advantage that the timing of the 3D imaging operation and the second 3D imaging operation can be controlled.

  In the present embodiment, a mode in which the first 3D imaging operation and the second 3D imaging operation are performed using the second X-ray apparatus 50b having two X-ray sources will be described. The first three-dimensional imaging operation is performed with the first index 53a of the first X-ray device 50a being aligned with the positioning mark in the positioning portion 31 on one side of the second guide ring 30b. Even if the second three-dimensional imaging operation is performed in a state where the first index 53a of the first X-ray apparatus 50a is aligned with the positioning mark in the positioning portion 31 on the other side of the second guide ring 30b. Good.

  The image signal output from the X-ray light receiving unit 25 based on the first three-dimensional imaging operation is subjected to image processing by the image processing unit 230 and can be displayed on the first display unit 40 and the second display unit 240. The image signal converted into the three-dimensional image data and output from the X-ray light receiving unit 25 based on the second three-dimensional imaging operation is subjected to image processing by the image processing unit 230, and the first display unit 40 and the second display unit are processed. The second 3D image data that can be displayed in 240 is used. Subject information such as a chart number is also registered in the first 3D image data and the second 3D image data, and the subject information may be superimposed on the image or added to the header of the image data. It may also be used as part of the file name.

  The first three-dimensional image data and the second three-dimensional data after image processing are sent to the first display unit 40 via the second communication unit 290 and the first communication unit 19e1, and the first display unit 40 is three-dimensional. The X-ray image (an image obtained by combining the X-ray image based on the first three-dimensional image data and the X-ray image based on the second three-dimensional image data) is displayed. Further, the first 3D image data and the second 3D image data after image processing are sent to the second display unit 240, and the second display unit 240 converts the 3D X-ray image (to the first 3D image data). An image obtained by combining an X-ray image based on the X-ray image based on the second 3D image data).

  Although the X-ray image obtained by the X-ray light receiving unit 25 is also displayed on the second display unit 240 of the observation apparatus 200, by using the first display unit 40, the subject's imaging target tooth at a location close to the subject. It becomes possible to see the imaging result of. In particular, the X-ray image obtained by the image processing can be displayed on the first display unit 40 of the dental intraoral X-ray imaging apparatus 100 partially inserted in the oral cavity of the subject. The possibility of mistaking the target tooth can be reduced.

  There are several display methods that combine two X-ray images as follows, and the image processing method differs depending on each display method. In the present embodiment, the combination processing is performed on the display device (first display unit 40 or second display unit 240) side, that is, the image processing unit 230 converts the first 3D image data and the second 3D image data to the first. The first display unit 40 and the second display unit 240 send to the first display unit 40 and the second display unit 240, and the first display unit 40 and the second display unit 240 combine the first 3D image data and the second 3D image data, and the combined X-ray image. However, the combination processing may be performed on the image processing 230 side.

  In the present embodiment, as combination processing, an image in which one of the X-ray image based on the first 3D image data and the X-ray image based on the second 3D image data is overlapped with red light and the other is overlapped with blue light. Is displayed. When the image displayed on the first display unit 40 is observed with glasses with red and blue color filters on the left and right, it appears as a three-dimensional image. In addition, when the image displayed on the second display unit 240 is observed with one eye through the first observation filter 271 and the other eye through the second observation filter 272, the image appears as a three-dimensional image.

  Further, as the combination process, an X-ray image based on the first three-dimensional image data and an image superimposed on the X-ray image based on the second three-dimensional image data after being polarized may be displayed. In this case, different polarizing films are provided for the first observation filter 271 and the second observation filter 272. When the image displayed on the first display unit 40 is observed with polarized glasses, it appears as a three-dimensional image. In addition, when the image displayed on the second display unit 240 is observed with one eye through the first observation filter 271 and the other eye through the second observation filter 272, the image appears as a three-dimensional image.

  Further, as the combination processing, an X-ray image based on the first 3D image data and an X-ray image based on the second 3D image data may be alternately displayed. In this case, the first observation filter 271 and the second observation filter 272 are provided with liquid crystal shutters in which one view is alternately cut off in synchronization with the image switching timing. When the image displayed on the first display unit 40 is observed with glasses equipped with a liquid crystal shutter in which the left and right fields of view are alternately cut off in synchronization with the image switching timing, the image appears as a three-dimensional image. In addition, when the image displayed on the second display unit 240 is observed with one eye through the first observation filter 271 and the other eye through the second observation filter 272, the image appears as a three-dimensional image.

  When observing a three-dimensional X-ray image recorded on the recording medium, the second operation unit 220 is operated to set the three-dimensional observation mode. The observation unit 270 is disposed at the first position. The image processing unit 230 reads the combination group of the 3D image data recorded on the recording medium and displays the list on the second display unit 240, and further displays the 3D image to be observed using the first operation unit 210. Please select a combination of data ". When a combination of 3D image data to be observed is selected using the first operation unit 210, the image processing unit 230 displays the selected combination of 3D image data on the first display unit 40 and the second display unit 240. Let A display method for combining two X-ray images is the same as in the above-described three-dimensional imaging mode.

  When observing the X-ray film placed on the second display unit 240, the second operation unit 220 is operated to set the white display mode in which the second display unit 240 is used as a shear stain. The observation unit 270 is disposed at the second position. The image processing unit 230 causes the second display unit 240 to display white. Thereby, the white light of the 2nd display part 240 turns into a backlight, and it becomes possible to observe the X-ray film mounted in the 2nd display part 240. FIG.

  In the white display mode, in accordance with the size of the X-ray film to be placed, the display surface of the second display unit 240 is a region where the X-ray film is not placed (the X-ray film is placed). In order to make the X-ray film easier to see by making the surroundings darker (outside the area), it may be a form in which a dark color such as black is displayed (masked).

  In the case of the present embodiment, since the tooth is a subject to be photographed, it is desirable that the first display unit 40 is attached to the retaining substrate 10 in a vertically long state. However, when the X-ray image based on the first three-dimensional image data and the X-ray image based on the second three-dimensional image data are displayed side by side, it is preferable that the X-ray image is attached to a holding substrate or the like in a horizontally long state. . For this reason, according to the method of displaying a three-dimensional X-ray image, the first display unit 40 is attached to the retaining substrate 10 in a state in which the vertically attached state and the horizontally attached state can be switched. Also good.

  The second display unit 240 is an object to be photographed, but is attached to the observation device 200 in a horizontally long state in consideration of placing a horizontally long (15 cm × 30 cm) X-ray film in the white display mode. It is desirable that

  In the present embodiment, there are two types of guide rings (first guide ring 30a and second guide ring 30b) that are held by the guide holding unit 15 of the retaining substrate 10 and used for positioning the irradiation port of the X-ray apparatus. Then, it is held by the guide holding part 15 of the retaining substrate 10 in a replaceable state by detachment.

  When the first guide ring 30a is attached to the guide holding unit 15, the first X-ray device 50a is disposed along the first guide ring 30a, so that the front surface of the X-ray light receiving unit 25 is substantially front. It is possible to position the irradiation port 51a of the first X-ray apparatus 50a.

  Further, if the irradiation port 51a of the first X-ray device 50a is arranged in accordance with the positioning mark of the positioning part 31 corresponding to the mark line closest to the reference position (for example, the main body part 10 of the retaining substrate 10), The center axis LX of the X-ray bundle emitted from the X-ray source LS of the 1X-ray apparatus 50a and the imaging target including the imaging surface of the X-ray light receiving unit 25 built in the photoreceptor holding unit 20 when viewed from the side It can be made substantially perpendicular to the bisector with the tooth axis of the tooth, and the bisector imaging method makes it possible to obtain an X-ray image of the imaging target tooth in a state close to actual length.

  When the second guide ring 30b is attached to the guide holding unit 15, the second X-ray device 50b is disposed along the second guide ring 30b, so that it is obliquely forward with respect to the imaging surface of the X-ray light receiving unit 25. It is possible to position the first irradiation port 51b1 and the second irradiation port 51b2 of the second X-ray apparatus 50b at these two locations.

  In addition, the first irradiation port 51b1 and the second irradiation of the second X-ray apparatus 50b are aligned with the positioning mark of the positioning unit 31 corresponding to the mark line closest to the reference position (for example, the main body 10 of the retaining substrate 10). If the mouth 51b2 is arranged, the central axes (first central axis LX1, second central axis LX2) of the X-ray bundles emitted from the first X-ray source LS1 and the second X-ray source LS2 of the second X-ray apparatus 50b are lateral. As seen from the above, the surface including the imaging surface of the X-ray light receiving unit 25 built in the photoreceptor holding unit 20 can be made substantially perpendicular to the bisector of the tooth axis of the imaging target tooth, and the bisector By the imaging method, it is possible to obtain an X-ray image of the imaging target tooth in a state close to the actual length.

  The observation unit 200 displays an X-ray image based on the X-rays emitted from the first X-ray source LS1 and an X-ray image based on the X-rays emitted from the second X-ray source LS2 in a superimposed manner. It is possible to observe a three-dimensional X-ray image by observing the image using the image or the like, or observing the images displayed side by side.

  In particular, since the first observation filter 271 and the second observation filter 272 of the observation unit 200 are fixed to the observation apparatus provided with the second display unit 240, the second display unit below the observation unit 200 from below. When viewing 240, it is possible to stereoscopically observe the stereoscopic X-ray image displayed on the second display unit 240 without wearing stereoscopic glasses.

  When observing a two-dimensional image, the observation unit 200 is housed, and it is possible to observe the two-dimensional X-ray image by directly viewing the second display unit 240 without using the observation unit 200.

  Further, since the reference scale 26 is also imaged together with the imaging target tooth and included in the X-ray image, it is possible to know the actual length of the imaging target tooth etc. while comparing with the image of the reference scale 26 included in the X-ray image. Become.

  In the present embodiment, in consideration of the bisector imaging method, that is, the central axis LX (or the first central axis LX1 or the second central axis LX2) of the X-ray bundle is viewed from the side. The first guide ring 30a and the second guide ring are substantially perpendicular to the bisector of the surface including the imaging surface of the X-ray light receiving unit 25 incorporated in the body holding unit 20 and the tooth axis of the imaging target tooth. Although the form in which the shape of the side part of 30b and the positioning mark of the positioning part 31 are determined has been described, the form may be determined in consideration of other imaging methods.

  For example, the central axis LX (or the first central axis LX1 or the second central axis LX2) of the X-ray bundle includes the imaging surface of the X-ray light receiving unit 25 built in the photoreceptor holding unit 20 when viewed from the side. The shape of the side part of the 1st guide ring 30a or the 2nd guide ring 30b, and the positioning mark of the positioning part 31 may be determined so that it may become substantially perpendicular | vertical to a surface.

  In the present embodiment, the configuration in which the photoreceptor holding unit 20 includes the X-ray light receiving unit 25 has been described. However, the X-ray receiving unit 25 may be externally held without including the X-ray receiving unit 25.

  In the present embodiment, the angle θ formed by the light receiver holding part 20 and the main body part 11 of the retaining substrate 10 is changed, and this is displayed outside the oral cavity using the angle display part 13. The body holding part 20 may be fixed to the main body part 11 of the holding substrate 10 and the angle θ may be fixed. In this case, the rotary shaft 12 and the angle display unit 13 are not necessary, and the positioning unit 31 of the first guide ring 30a or the second guide ring 30b has only the optimum positioning mark corresponding to the fixed angle θ. Become a form.

  Moreover, since the electrical connection between the X-ray light receiving unit 25 and the grip 19e is performed via the cable 16 provided inside the retaining substrate 10, an opportunity for an electrical member such as a cable to come into contact with the oral cavity of the subject. Can be reduced.

  In addition, although the power supply to the X-ray light-receiving part 25 and the 1st display part 40 was demonstrated from the battery 19e2 via the cable 16, the power supply by another power supply may be sufficient. For example, a form in which power is supplied by a power generation device such as a battery or a solar battery provided on the retaining substrate 10 can be considered. In the retaining substrate 10, it is possible to place a light-receiving panel of a solar cell in a region that is not inserted into the oral cavity of the subject, and X-ray photography is often performed in a state where room illumination light is lit. It is possible to supply power to the X-ray light receiving unit 25 and the first display unit 40 based on power generation using illumination light. In particular, in X-ray imaging, it is only necessary to drive the X-ray imaging device or display the image on the first display unit 40 only before and after imaging. In addition, there is little need to consume power other than at the time of imaging, and the X-ray imaging device or the like can be driven without storing the power generated by the illumination light in the secondary battery or the like.

  As in this embodiment, when the battery 19e2 is used and when a power generation device such as a solar cell is used, power can be supplied to the X-ray light receiving unit 25 and the like without using an AC power supply. It is also possible to suppress noise superposition compared to a mode in which power is supplied to the X-ray light receiving unit 25 and the like after being converted to direct current using.

  In addition, at least one of the first operation unit 210, the second operation unit 220, the image processing unit 230, the second display unit 240, and the second communication unit 290 may be configured to use a part of a personal computer, or software of the personal computer. The image processing may be performed on the wear.

  Further, in the present embodiment, a mode in which signal transmission / reception is performed wirelessly between the dental intraoral X-ray imaging apparatus 100 and the observation apparatus 200 has been described. Thereby, it is not necessary to connect the dental intraoral X-ray imaging apparatus 100 located near the subject and the observation apparatus 200 located away from the subject with a cable for signal transmission and reception. There are advantages that the degree of freedom of the installation place of the apparatus 200 is increased and wiring can be easily performed. However, signal transmission / reception may be performed using a wired cable. In this case, the dental intraoral X-ray imaging apparatus 100 may be driven by supplying power from the observation apparatus 200 without providing the battery 19e2.

  Further, when a three-dimensional X-ray image is captured, the X-ray irradiation by the first X-ray source LS1 and the X-ray irradiation by the second X-ray source LS2 in the second X-ray apparatus 50b are manually switched, and the manual switching is performed. In addition, the mode in which the first 3D imaging operation and the second 3D imaging operation are manually instructed has been described. However, the second X-ray apparatus 50b and the observation apparatus 200 are linked to perform these automatically. There may be.

  For example, signal transmission / reception is performed between the second X-ray apparatus 50b and the observation apparatus 200, and X-ray irradiation by the first X-ray source LS1 and X-ray irradiation by the second X-ray source LS2 are performed on the image processing unit of the observation apparatus 200. A mode in which the first three-dimensional imaging operation and the second three-dimensional imaging operation are performed in response to the switching is considered. In this case, after the dental intraoral X-ray imaging apparatus 100 and the second X-ray apparatus 50b are ready for imaging, the first operation unit 210 or the second operation unit 220 is used to send a series of images to the image processing unit 230. By simply giving an instruction to perform an imaging operation (X-ray irradiation by the first X-ray source LS1 and first 3D imaging operation, X-ray irradiation by the second X-ray source LS2 and second 3D imaging operation), a series of such imaging is performed. Operation becomes possible.

  Further, as the combination processing, an X-ray image based on the first 3D image data and an X-ray image based on the second 3D image data may be displayed side by side. In this case, both images are observed using the parallel method or the intersection method without using the glasses or the observation unit 270. When a stereoscopic image is not desired, the observation apparatus 200 may omit members and functions used to display and observe the stereoscopic image, such as the observation unit 270.

  The first and second connection portions 19d1 and 19d2 may be a connection mechanism that is rotatable around a plurality of axes such as a ball joint, but is rotatable around a single axis such as a meshing clutch. It may be a connection mechanism (see FIGS. 14 to 16). Also in this case, if there are two or more connection mechanisms, the direction of the normal of the imaging surface of the X-ray light receiving unit 25 can be freely changed while holding the grip 19e.

  The cable 16 may be connected to the grip 19e through the inside of the retaining substrate 10, but is exposed to the outside from the back surface of the photoreceptor holding portion 20, and the second arm portion 19c2 (or the third arm). It may be configured to reach the grip 19e through the inside of the portion 19c3).

  In this case, if the portion exposed from the back surface of the first arm portion 19c1 and the photoreceptor holding portion 20 of the cable 16 is made substantially parallel to the rotation shaft 12, the subject of the dental intraoral X-ray imaging apparatus 100 at the time of imaging is taken. It is also possible to cover a portion inserted into the oral cavity (a part of the retaining substrate 10, a part of the light receiving member holding part 20, and a part of the grip part 19) with one waterproof cover (see FIG. 16). Specifically, a part of the retaining substrate 10 (a part of the main body part 11), a part of the holding part 19 including the photoreceptor holding part 20, and the bearing part 19a and the ball 19b have a relatively simple shape. Covered with one waterproof cover.

DESCRIPTION OF SYMBOLS 1 Dental intraoral X-ray imaging system 10 Retaining board 11 Main-body part 12 Rotating shaft 13 Angle display part 14 Scale 15 Guide holding part 16 Cable 18 Notch part 19 Holding part 19a Bearing part 19a1 Magnet 19a2 Sampling board 19b Ball 19c1-19c3 1st 1st to 3rd arm portions 19d1, 19d2 First and second connection portions 19e Grip 19e1 First communication portion 19e2 Battery 20 Photoreceptor holding portion 25 X-ray light receiving portion 26 Reference scale 30a, 30b First guide ring, second guide ring 31 Positioning part 33a, 33b 1st attaching part, 2nd attaching part 40 Display part 50a, 50b 1st X-ray apparatus, 2nd X-ray apparatus 51a, 51b1, 51b2 Irradiation port, 1st irradiation port, 2nd irradiation port 53a, 53b First index, second index 61, 62 First, second waterproof cover 100 Dental intraoral X-ray imaging apparatus 200 Observation apparatus 210 First operation section 220 Second operation section 230 Image processing section 240 Second display section 260 Drive section 270 Observation section 271, 272 First observation filter, second observation filter 290 First 2 communication units LX, LX1, LX2 Central axis, first central axis, second central axis LP Lines LS, LS1, LS2 X passing through the center of the imaging surface of the X-ray light receiving unit as viewed from above and perpendicular to the imaging surface X-ray source, first X-ray source, second X-ray source

Claims (9)

A retaining substrate;
A receiver holding unit that holds an X-ray receiving unit having an X-ray imaging element provided at an end of a portion to be inserted into the oral cavity of the retaining substrate during imaging using an X-ray device;
With a gripping part,
The gripping portion includes a bearing portion attached to a back surface of the photoreceptor holding portion, a ball supported by the bearing portion, an arm portion connected to the ball, and the arm portion connected to the arm. And a grip connected via a connection part or other arm part,
The connecting portion can freely change the angle formed by the arm portion and the other arm portion,
By holding the grip, the photoreceptor holding portion is held in a state where the angle formed by the arm portion and the imaging surface of the X-ray imaging device is adjustable,
The dental intraoral X-ray imaging apparatus, wherein the grip has a power source for driving the X-ray imaging device. A retaining substrate;
A receiver holding unit that holds an X-ray receiving unit having an X-ray imaging element provided at an end of a portion to be inserted into the oral cavity of the retaining substrate during imaging using an X-ray device;
With a gripping part,
The gripping portion includes a bearing portion attached to the bottom surface of the retaining substrate, a ball supported by the bearing portion, an arm portion connected to the ball, and an arm portion connected to the arm portion or the arm portion. Having a grip connected via a connecting part or other arm part,
The connecting portion can freely change the angle formed by the arm portion and the other arm portion,
By holding the grip, the holding substrate is held in a state in which an angle formed by the arm portion and the holding substrate is adjustable,
The dental intraoral X-ray imaging apparatus, wherein the grip has a power source for driving the X-ray imaging device.   The dental intraoral X according to claim 1 or 2, wherein the grip has a communication unit for wirelessly transmitting an image signal obtained by the X-ray imaging device to an image processing apparatus. X-ray equipment.   The dental intraoral X-ray imaging apparatus according to claim 1, wherein the grip includes an image processing unit that performs image processing on an image signal obtained by the X-ray imaging element. The connecting portion is provided with a meshing clutch,
The dental intraoral X-ray imaging apparatus according to claim 1 or 2, wherein an angle formed by the arm portion and the other arm portion is freely adjusted via the engagement clutch. . A holding substrate, and a photoreceptor holding unit that holds an X-ray light receiving unit having an X-ray imaging element provided at an end of a portion to be inserted into the oral cavity of the holding substrate during imaging using the X-ray device; A dental intraoral X-ray imaging apparatus having a gripping portion, wherein the gripping portion includes a bearing portion attached to a back surface of the photoreceptor holding portion, a ball supported by the bearing portion, and a ball An arm part to be connected; and a grip connected to the arm part or connected to the arm part via a connection part or another arm part, and the connection part includes the arm part and the other arm part. The angle formed between the arm and the X-ray image sensor can be adjusted by holding the photoreceptor while the angle between the arm and the X-ray image sensor can be adjusted by gripping the grip. The grip is connected to a power source for driving the X-ray image sensor. And those that,
A dental intraoral X-ray imaging system comprising: an observation device for observing an X-ray image having a display unit that displays an X-ray image based on an image signal obtained by the X-ray image sensor.   The dental intraoral X-ray imaging system according to claim 6, wherein the grip includes a first communication unit for transmitting the image signal wirelessly to the observation apparatus.   The dental apparatus according to claim 7, wherein the observation device includes a second communication unit that communicates with the first communication unit, and the second communication unit has a separate structure from the observation device. Intraoral X-ray imaging system.   The observation apparatus includes an observation unit that is arranged in a movable state on the display unit and includes a first observation filter and a second observation filter. For stereoscopic viewing, the display unit is When the first X-ray image for observing with one eye and the second X-ray image for observing with the other eye of the observer are displayed in combination, the one eye of the observer is The observation unit is in the first position so that the first X-ray image can be seen through the first observation filter, and the other eye of the observer can see the second X-ray image through the second observation filter. When the stereoscopic part is arranged and the stereoscopic view is not performed, the observation part is a second part so that both eyes of the observer can see the display part without passing through the first observation filter and the second observation filter. The device according to claim 6, wherein the device is disposed at a position. Intraoral X-ray imaging system for the family.

Images