WO2014017366A1 - Dispositif d'imagerie par rayons x, procédé de mesure d'inclinaison de tête dans une imagerie par rayons x, support pour dispositif d'imagerie par rayons x, siège pour dispositif d'imagerie par rayons x et dispositif de réglage d'inclinaison de tête - Google Patents

Dispositif d'imagerie par rayons x, procédé de mesure d'inclinaison de tête dans une imagerie par rayons x, support pour dispositif d'imagerie par rayons x, siège pour dispositif d'imagerie par rayons x et dispositif de réglage d'inclinaison de tête Download PDF

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Publication number
WO2014017366A1
WO2014017366A1 PCT/JP2013/069464 JP2013069464W WO2014017366A1 WO 2014017366 A1 WO2014017366 A1 WO 2014017366A1 JP 2013069464 W JP2013069464 W JP 2013069464W WO 2014017366 A1 WO2014017366 A1 WO 2014017366A1
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WIPO (PCT)
Prior art keywords
head
ray imaging
ray
subject
imaging apparatus
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PCT/JP2013/069464
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English (en)
Japanese (ja)
Inventor
大樹 平林
Original Assignee
Hirabayashi Daiki
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2012165495A external-priority patent/JP5100907B1/ja
Priority claimed from JP2013108647A external-priority patent/JP2014138692A/ja
Application filed by Hirabayashi Daiki filed Critical Hirabayashi Daiki
Priority to US14/415,804 priority Critical patent/US9265466B2/en
Publication of WO2014017366A1 publication Critical patent/WO2014017366A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/04—Positioning of patients; Tiltable beds or the like
    • A61B6/0492—Positioning of patients; Tiltable beds or the like using markers or indicia for aiding patient positioning

Definitions

  • the present invention relates to an X-ray imaging apparatus, a head tilt measurement method when performing X-ray imaging, an X-ray imaging apparatus stand, an X-ray imaging apparatus chair, and a head tilt setting apparatus. This is suitable for application when taking a cephalometric radiograph.
  • cephalometric X-ray photograph cephalogram
  • cephalogram cephalometric X-ray photograph
  • a side (side) head X-ray standard photograph has been taken exclusively.
  • a posterior front (PA) post-anterior X-ray standard photograph may be taken as needed, it is rarely taken. In fact, it is difficult to say that useful information useful for treatment has been obtained.
  • the main reason is that it is extremely difficult to set the tilt of the head in the front-rear direction when taking a back-front-direction cephalometric radiograph, so that the tilt of the head differs every time it is taken. . If the images are taken with different head tilts, the resulting posterior front X-ray standard photograph gives a completely different impression. For this reason, at present, it is considered that the posterior-forward cephalometric radiogram is not a reliable material for determining the skeleton of the patient's head.
  • the lateral cephalometric X-ray standard photograph has been taken at a position where the Frankfort plane of the patient's head is parallel to the floor (see Non-Patent Documents 1 and 2).
  • the Frankfurt plane is a plane connecting the lowest point of the orbital bone edge (orbitale) and the upper edge of the ear canal (porion).
  • a patient has an orbital point support rod with a pointed needle in the cephalo X-ray apparatus. It is known to be provided in a horizontal plane so as to face the face (see Non-Patent Document 2).
  • the back-front-direction cephalometric radiograph was also taken at a position where the Frankfurt plane was parallel to the floor (see Non-Patent Document 2).
  • Non-Patent Document 2 when taking a posterior anterior cephalometric X-ray photograph, “the image is likely to be significantly different due to the displacement of the head. "It is better to do this later" (page 147, line 11 to line 13 of the same document), and the patient's head when taking a posterior front cephalometric radiograph. No specific method is described for making the Frankfurt plane parallel to the floor. For this reason, it is considered difficult to take a back front X-ray standard photograph and a lateral X-ray standard photograph with the same tilt of the patient's head. Also, this method is dangerous because the patient's face or the like may come into contact with the orbital point support rod.
  • Non-Patent Document 3 the tilt of the head is different every time when photographing a lateral head X-ray standard photograph as well as a rear frontal head X-ray standard photograph. It is inevitable that it is extremely difficult to take a back-front cephalometric radiograph and a lateral cephalometric radiograph with the same tilt of the patient's head.
  • the problems to be solved by the present invention are a lateral head X-ray standard photograph, a rear frontal head X-ray standard photograph, a front and rear head X-ray standard photograph, and an intermediate between the rear front direction and the front and rear direction.
  • X-rays of the head in any direction can be taken easily and with high reproducibility with the same tilt in the front-rear direction of the subject's head, and when using a support rod below the orbit. It is to provide an X-ray imaging apparatus and a head tilt measurement method when performing X-ray imaging without any danger.
  • a lateral head X-ray standard photograph a rear frontal head X-ray standard photograph, a front and rear head X-ray standard photograph, and an intermediate between the rear front direction and the front and rear direction.
  • X-rays of the head in any direction can be taken easily and with high reproducibility with the same tilt in the front-rear direction of the subject's head, and when using a support rod below the orbit.
  • a chair for an X-ray imaging apparatus and a head tilt setting apparatus without any danger.
  • the present invention provides: A pair of arms provided opposite to each other; Ear rods respectively provided on inner surfaces facing each other of the pair of arms, A head tilt setting device for setting a tilt in the front-rear direction of the head of a subject provided on at least one of the pair of arms, the central axis of the ear rod being integrated with the arm Having a transparent plate provided perpendicular to the center axis of the ear rod on the outer surface of the arm, An X-ray imaging apparatus having a horizontal plane confirmation mechanism.
  • the pair of arms is typically provided so as to face each other across the reference line, and is configured to be rotatable around the reference line.
  • the head tilt setting device typically sets the tilt of the subject's head in a state where the ear rods of a pair of arms are attached to the outer ear holes of both ears of the subject.
  • the head tilt setting device typically has a first reference point on the arm or ear rod and a second reference point on the face of the subject when the head is viewed from the side (side).
  • the head inclination is set so that the connecting straight line is a horizontal line or a straight line inclined at a predetermined angle with respect to the horizontal line.
  • the head tilt setting device preferably has the function of a protractor that measures the tilt angle with respect to the horizontal line with the first reference point as the center.
  • the inclination angle with respect to the horizontal line centered on the first reference point is a positive angle (when the straight line connecting the first reference point and the second reference point is inclined upward with respect to the horizontal line).
  • it may be a negative angle (when a straight line connecting the first reference point and the second reference point is inclined downward with respect to the horizontal line).
  • the horizontal plane confirmation mechanism can be used for the inspector to recognize the horizontal plane when setting the tilt of the head using the head tilt setting device.
  • This horizontal plane confirmation mechanism may be provided on the transparent plate or may be provided outside the transparent plate.
  • the horizontal plane confirmation mechanism for example, a horizontal plate that is provided on the transparent plate so as to project inwardly perpendicularly to the transparent plate is used. Colored horizontal lines provided at positions facing each other can also be used.
  • the horizontal plate may have, for example, a folding ruler configuration that can be opened and closed in a horizontal plane.
  • the horizontal plane confirmation mechanism may be, for example, an optical device (including a light source and a scanning mechanism) that can irradiate or scan a visible light beam in a horizontal plane, or a horizontal colored line.
  • the visible light beam is a beam of light emitted from a laser beam or a light emitting diode.
  • Colored lines are, for example, those obtained by coloring the surface of a thin linear wire made of metal, carbon fiber, plastic, etc., and guiding visible light such as red light or green light from the end face of a linear transparent fiber.
  • the visible light beam itself may be used.
  • the horizontal plane confirmation mechanism may be, for example, a horizontal plate movable up and down or movable in the horizontal plane, or a horizontal plane confirmation mechanism when a horizontal plane confirmation mechanism is provided on the transparent plate.
  • the various types mentioned above as examples can be used.
  • the transparent plate constituting the head tilt setting device is provided with a scale indicating the length, which is made of an X-ray shielding material, as necessary.
  • one of the pair of arms is provided with the above-described transparent plate, and the other of the pair of arms is provided with another transparent plate having a length scale made of an X-ray shielding material. It is done.
  • These scales can be used as a reference for length in a photograph or image obtained by X-ray imaging of the head.
  • the first reference point is, for example, the highest point of the ear rod (during shooting)
  • the second reference point is, for example, the lowest point of the orbital bone edge (Orbitale), the orbital margin just below the center of the pupil, Selected as the center.
  • the straight line connecting the first reference point and the second reference point does not have to be the Frankfurt plane or a plane close thereto, the first reference point and the second reference point can be arbitrarily selected. .
  • the X-ray imaging apparatus is, for example, a Cephalo X-ray imaging apparatus, but may be another medical / dental X-ray imaging apparatus, a computed tomography (CT) apparatus, or the like.
  • CT computed tomography
  • the part to be imaged by the subject is typically the head, but the neck may be included in addition to the head, or only the neck may be imaged.
  • this invention When performing X-ray imaging of the subject's head, ear rods provided respectively on inner surfaces facing each other of a pair of arms provided opposite to each other were attached to the outer ear holes of both ears of the subject.
  • the first reference point on the arm or the ear rod and the second face of the subject's face A head tilt setting device provided on at least one of the pair of arms for setting a straight line connecting a reference point to a horizontal line or a straight line inclined at a predetermined angle with respect to the horizontal line, A horizontal plane integrally provided with the arm and perpendicular to the central axis of the ear rod, or provided on the outer surface of the arm and perpendicular to the central axis of the ear rod; With confirmation mechanism Measuring a head tilt measuring method for performing X-ray imaging.
  • this invention When performing X-ray imaging of the head of a subject with an X-ray imaging apparatus having a pair of arms provided opposite to each other and ear rods provided on inner surfaces facing each other of the pair of arms. Used, When the ear rods of the pair of arms are attached to the outer ear holes of both ears of the subject, the arm is tilted in the front-rear direction of the subject's head when the head is viewed from the side. Or a head for setting a straight line connecting the first reference point on the ear rod and the second reference point on the face of the subject to be a horizontal line or a straight line inclined at a predetermined angle with respect to the horizontal line.
  • a tilt setting device which is provided integrally with the arm and perpendicular to the central axis of the ear rod, or transparent on the outer surface of the arm perpendicular to the central axis of the ear rod Having a plate, It is the stand for X-ray imaging apparatuses which has a horizontal surface confirmation mechanism.
  • the stand for the X-ray imaging apparatus is typically installed such that the head tilt setting device is located at the same position as the head tilt setting device in the X-ray imaging apparatus at the time of imaging.
  • this invention When performing X-ray imaging of the head of a subject with an X-ray imaging apparatus having a pair of arms provided opposite to each other and ear rods provided on inner surfaces facing each other of the pair of arms. Used, When the ear rods of the pair of arms are attached to the outer ear holes of both ears of the subject, the arm is tilted in the front-rear direction of the subject's head when the head is viewed from the side. Or a head for setting a straight line connecting the first reference point on the ear rod and the second reference point on the face of the subject to be a horizontal line or a straight line inclined at a predetermined angle with respect to the horizontal line.
  • a tilt setting device which is provided integrally with the arm and perpendicular to the central axis of the ear rod, or transparent on the outer surface of the arm perpendicular to the central axis of the ear rod Having a plate, It is a chair for X-ray imaging apparatuses which has a horizontal surface confirmation mechanism.
  • the head tilt setting device of this X-ray imaging apparatus chair is typically installed so as to be in the same position as the head tilt setting device in the X-ray imaging apparatus at the time of imaging.
  • this invention Provided to at least one of the pair of arms of the X-ray imaging apparatus having a pair of arms provided opposite to each other and ear rods provided on inner surfaces facing each other of the pair of arms;
  • the inclination of the subject's head in the front-rear direction with the ear rods of the pair of arms attached to the outer ear holes of both ears of the subject When the head is viewed from the side, a straight line connecting the first reference point on the arm or the ear rod and the second reference point on the face of the subject is a horizontal line or a predetermined line with respect to the horizontal line.
  • Used to set a straight line with an angle inclination It consists of a transparent plate provided perpendicular to the center axis of the ear rod on the outer surface of the arm, the transparent plate has a horizontal plane confirmation mechanism, A head tilt setting device having a function of a protractor that measures an inclination angle with respect to a horizontal line, centered on the first reference point.
  • An X-ray photograph or the like can be taken easily and with high reproducibility with the same tilt of the subject's head in the front-rear direction, and there is no danger as in the case of using a lower-orbital point support rod.
  • FIG. 1 is a schematic diagram of a Cephalo X-ray imaging apparatus according to a first embodiment of the present invention viewed from a horizontal direction and a direction perpendicular to a center X-ray. It is a basic diagram which shows the arm of the cephalo X-ray imaging apparatus by 1st Embodiment of this invention, and the head inclination setting apparatus installed in this arm. It is a top view which shows the horizontal board provided in the lower end of the head inclination setting apparatus of the cephalo X-ray imaging apparatus by 1st Embodiment of this invention.
  • FIG. It is a basic diagram for demonstrating the method to image
  • FIG. 1 is a schematic diagram for explaining a method of taking a cephalometric radiograph in an arbitrary direction between a front-rear direction and a front-rear direction using the Cephalo X-ray apparatus according to the first embodiment of the present invention. is there. It is a front view which shows the stand for X-ray imaging apparatuses used in the cephalo X-ray imaging apparatus by 2nd Embodiment of this invention. It is a side view which shows the chair for X-ray imaging apparatuses used in the cephalo X-ray imaging apparatus by 3rd Embodiment of this invention. It is a basic diagram for demonstrating the cephalo X-ray imaging apparatus by 4th Embodiment of this invention.
  • FIG. 3 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of the subject 1 photographed using the cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • FIG. 3 is a drawing-substituting photograph showing a posterior frontal cephalometric radiograph of the subject 1 photographed using the cephalo X-ray imaging apparatus according to the first embodiment of the present invention.
  • FIG. 3 is a drawing-substituting photograph showing a posterior frontal cephalometric radiograph of a subject 2 imaged using the cephalo X-ray imaging apparatus according to the first embodiment of the present invention.
  • 4 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of the subject 3 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior frontal head X-ray standard photograph of a subject 3 photographed by using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of a subject 4 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • It is a drawing substitute photograph which shows the back anterior head X-ray standard photograph of the test subject 4 image
  • 3 is a drawing-substituting photograph showing a posterior frontal head X-ray standard photograph of a subject 5 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior-front cephalometric X-ray standard photograph of a subject 6 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of a subject 7 photographed by using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior frontal head X-ray standard photograph of a subject 7 photographed by using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior frontal head X-ray standard photograph of a subject 8 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of a subject 9 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior anterior head X-ray standard photograph of a subject 9 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of the subject 10 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 4 is a drawing-substituting photograph showing a posterior frontal cephalometric radiograph of the subject 10 photographed using the Cephalo X-ray imaging apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior anterior head X-ray standard photograph of a subject 11 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior-frontal head X-ray standard photograph of a subject 12 photographed using the cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of a subject 13 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • It is a drawing substitute photograph which shows the back-front-direction head X-ray standard photograph of the test subject 13 image
  • 4 is a drawing-substituting photograph showing a posterior anterior head X-ray standard photograph of a subject 14 photographed by using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior front cephalometric X-ray standard photograph of a subject 15 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention. It is a drawing substitute photograph which shows the side head X-ray standard photograph of the test subject 16 image
  • FIG. 3 is a drawing-substituting photograph showing a posterior front cephalometric X-ray standard photograph of a subject 17 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • FIG. 3 is a drawing-substituting photograph showing a lateral temporal X-ray standard photograph of a subject 18 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior anterior cephalometric X-ray standard photograph of a subject 18 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • 3 is a drawing-substituting photograph showing a posterior front cephalometric X-ray standard photograph of a subject 19 photographed using the Cephalo X-ray photographing apparatus according to the first embodiment of the present invention.
  • It is a drawing substitute photograph which shows the back front occipital X-ray standard photograph in the high face of the test subject 19 image
  • FIG. 5 is a drawing-substituting photograph showing a back-front cephalometric X-ray standard photograph of the face of the subject 19 taken by using the Cephalo X-ray imaging apparatus according to the first embodiment of the present invention. It is a basic diagram which looked at the cephalo X-ray imaging apparatus by the 5th Embodiment of this invention from the perpendicular direction with respect to the horizontal direction and the center X-ray. It is a top view which shows the closed state and open state of the folding ruler-shaped horizontal board used as a horizontal surface confirmation mechanism in the cephalo X-ray imaging apparatus by 6th Embodiment of this invention.
  • FIG. In the Cephalo X-ray imaging apparatus according to the ninth embodiment of the present invention, the closed and open state of the folding ruler horizontal plate as a horizontal plane confirmation mechanism provided on the bottom surface of the head tilt setting device is viewed from below.
  • FIG. It is a top view which shows the horizontal coloring line as a horizontal surface confirmation mechanism provided in parallel with the head inclination setting apparatus in the cephalo X-ray imaging apparatus by 10th Embodiment of this invention. It is a top view which shows the optical apparatus as a horizontal surface confirmation mechanism provided in the head inclination setting apparatus in the cephalo X-ray imaging apparatus by 11th Embodiment of this invention.
  • FIG. 1 It is a side view which shows the head inclination setting apparatus provided with the scale which shows the length used in the cephalo X-ray imaging apparatus by 12th Embodiment of this invention. It is a basic diagram which shows the cephalo X-ray imaging apparatus by 13th Embodiment of this invention. A transparent plate provided with a scale indicating the length provided on the outer surface of the other arm different from the arm provided with the head tilt setting device in the cephalo X-ray imaging apparatus according to the thirteenth embodiment of the present invention. FIG. It is sectional drawing which shows the principal part of the head inclination setting apparatus in the cephalo X-ray imaging apparatus by 13th Embodiment of this invention.
  • FIG. 1 shows a Cephalo X-ray imaging apparatus according to the first embodiment.
  • the cephalometric X-ray imaging apparatus includes an X-ray generation unit 11, arms 12 and 13, an arm control device 14, and an X-ray detection unit 15.
  • the X-ray generator 11 has an X-ray tube 11a, and X-rays are generated from the X-ray tube 11a.
  • the arm control device 14 is supported on the floor surface by a support portion (not shown).
  • X-rays generated from the X-ray tube 11a are applied to the head of the subject, and the X-rays transmitted through the head enter the X-ray detection unit 15 to obtain a transmitted X-ray image.
  • the X-ray detection part 15 is not specifically limited, For example, an X-ray film, an imaging plate, a semiconductor detector etc. are used.
  • the transmitted X-ray image is converted into, for example, a digital image signal as necessary.
  • the arms 12 and 13 are provided to face each other with a reference line 16 parallel to the vertical line and orthogonal to the central X-ray.
  • Upper portions of the arms 12 and 13 are attached to an arm control device 14.
  • the arms 12, 13 can be rotated around the reference line 16 by the arm control device 14, can be moved up and down in a direction parallel to the reference line 16, and can be translated in opposite directions in the horizontal direction.
  • the lower portions of the arms 12 and 13 are gradually narrowed toward the lower end, and the lower end is circular (see FIG. 2). Further, the lower ends of the arms 12 and 13 are respectively bent inward by a predetermined angle with respect to the vertical line and then again parallel to the vertical line. However, the arms 12 and 13 may be entirely parallel to the vertical line.
  • At least a portion irradiated with X-rays at the time of radiography is made of a transparent material, and generally almost all of it is made of a transparent material.
  • Cylindrical ear rods 17 and 18 each having a pointed tip are coaxially provided on inner surfaces of the lower ends of the arms 12 and 13 facing each other. As the ear rods 17 and 18, conventionally known ones can be used, and their contours are captured at the time of photographing.
  • FIG. 1 shows an example in which a head tilt setting device 19 is attached to the outer surface of the arm 13.
  • the head tilt setting device 19 is made of a rectangular transparent plate perpendicular to the central axis of the ear rod 18.
  • a transparent plastic plate such as an acrylic plate or a PET (polyethylene terephthalate) plate, a glass plate, or the like can be used.
  • the transparent plate may have a thickness that provides the necessary mechanical strength and is difficult to bend.
  • the transparent plate has a thickness of 2 mm or more and 10 mm or less.
  • the method of attaching the head tilt setting device 19 is not particularly limited, and any method such as adhesion, clip fastening, and screwing may be used.
  • FIG. 2 is a view of the head tilt setting device 19 as viewed from a direction perpendicular to the surface thereof.
  • the lower end surface (base) of the head tilt setting device 19 is parallel to the horizontal plane.
  • the lower end surface of the head tilt setting device 19 coincides with a tangential direction drawn perpendicularly to the central axis of the ear rod 18 at the uppermost point of the ear rod 18.
  • the head tilt setting device 19 is formed with an angle scale 19a centered on the uppermost point of the ear rod 18, and has a function of a protractor.
  • the angle graduations 19a are formed at intervals of 10 ° from 0 ° to 90 °.
  • the method of attaching the angle graduations 19a is not limited to this, and is formed at intervals of 5 ° or 1 °, for example.
  • the angle scale 19a may be formed by an angle within a specific range, for example, from 0 ° to 30 °.
  • a line whose angle scale 19a is 0 ° coincides with the lower end surface of the head tilt setting device 19.
  • the angle scale 19a is typically formed by, for example, a black colored line as in a normal protractor, but is not limited thereto.
  • the angle scales 19a excluding 0 ° may be provided on one side of the head tilt setting device 19, but are preferably provided at positions corresponding to each other on both sides.
  • a horizontal plate 20 is provided on the lower end surface of the head tilt setting device 19 so as to protrude inward perpendicularly to the head tilt setting device 19.
  • FIG. 3 shows a plan view of the head tilt setting device 19 and the horizontal plate 20.
  • the horizontal plate 20 has a wide portion at a portion away from the ear rod 18.
  • the horizontal plate 20 is preferably colored in order to facilitate visual recognition when checking the horizontal plane, and specifically, for example, black.
  • the material, thickness, horizontal width, etc. of the horizontal plate 20 are preferably selected so as to appear in an X-ray transmission image.
  • the material of the horizontal plate 20 is, for example, a transparent plastic such as acrylic, an opaque plastic, or a metal.
  • the thickness of the horizontal plate 20 is 0.2 mm or more and 2 mm or less, for example, it is not limited to this.
  • the horizontal width of the horizontal plate 20 is, for example, not less than 1 mm and not more than 30 mm, but is not limited thereto.
  • the arms 12 and 13 are translated inward in the horizontal direction, and the ear rods 17 and 18 are inserted into the left and right outer ear holes of the head 21 of the subject.
  • the head 21 is fixed by making the uppermost points of the ear rods 17 and 18 come into contact with the polyion so that the irradiation direction of the central X-ray coincides with the central axis of the ear rods 17 and 18.
  • the examiner searches for a predetermined reference point (second reference point) on the face of the head 21, such as an orbitale (Or), an orbital border immediately below the center of the pupil, and the center of the eyelid fracture.
  • the examiner can search by touching the vicinity of the lower edge of the eye socket with the fingertip. Then, as shown in FIG. 5, a circular small colored sticker 22 is attached to the reference point thus searched.
  • the seal 22 may basically have any color, for example, red, yellow, green, blue, white, black, or the like. If it is difficult to see the seal 22 affixed to this reference point from the side of the head 21, the seal 22 is also placed on the face at a position, for example, 5 to 20 mm away from the seal 22 in the horizontal direction. Paste. Next, as shown in FIG. 6, the examiner looks at the head tilt setting device 19 from the outside in the horizontal direction.
  • FIG. 6 shows, as an example, a case where a plane connecting Polion and Orbitale, that is, the Frankfurt plane is set horizontally.
  • the horizontal plate 20 whose angle scale 19a is 0 ° is observed from the outside.
  • the horizontal plate 20 looks linear, it means that the horizontal plate 20 is observed from the horizontal direction. Therefore, the head 21 is inclined in the front-rear direction so that the straight line connecting the pillion and the orbitale coincides with the horizontal plate 20.
  • the Frankfurt plane of the head 21 is set to be parallel to the horizontal plane (floor surface).
  • a lateral head X-ray standard photograph is taken by performing X-ray photography in a state where the inclination of the head 21 is set to a desired inclination.
  • FIG. 7 shows a case where a lateral cephalometric radiograph is taken at (high face).
  • the angle scale 19a of the head tilt setting device 19 is used to adjust the tilt of the head 21 in the front-rear direction so that the straight line connecting the polyion and the orbitale is at an angle of 10 °.
  • the seal 22 is still attached to a predetermined reference point on the face of the head 21, specifically, for example, an orbitale.
  • the examiner looks at the head tilt setting device 19 in the horizontal direction from the outside.
  • the seal 22 can be seen through the head tilt setting device 19.
  • the angle scale 19a of the head tilt setting device 19 is used to shoot a lateral cephalometric radiograph of a straight line connecting Polion and Orbitale. Set to the same angle as you did.
  • both the lateral head X-ray standard photograph and the rear frontal head X-ray standard photograph can be taken at a position where the Frankfurt plane of the head 21 is parallel to the horizontal plane (floor surface).
  • the irradiation direction of the central X-ray is inclined by an angle ⁇ with respect to the central axis of the ear rods 17 and 18.
  • the seal 22 is still attached to a predetermined reference point on the face of the head 21, specifically, for example, an orbitale.
  • the examiner looks at the head tilt setting device 19 in the horizontal direction from the outside.
  • the seal 22 can be seen through the head tilt setting device 19.
  • the angle scale 19a of the head tilt setting device 19 is used to shoot a lateral cephalometric radiograph of a straight line connecting Polion and Orbitale. Set to the same angle as you did.
  • a head X-ray picture can be taken in the state in which the tilt of the head 21 in the front-rear direction is the same as that at the time of lateral head X-ray standard photography.
  • the head X-ray photograph is taken at a position where the Frankfurt plane of the head 21 is parallel to the horizontal plane (floor surface) in the same manner as the lateral head X-ray standard photograph and the rear frontal head X-ray standard photograph. You can shoot.
  • the following various advantages can be obtained. That is, by using the head tilt setting device 19 to set the tilt in the front-rear direction of the head 21 at the time of photographing to a desired tilt, the lateral head X-ray standard photograph, the rear front head X-ray Standard photographs, anteroposterior head X-ray standard photographs, cephalometric X-ray photographs in any direction between the posterior front direction and the anteroposterior direction, etc. can be easily obtained with the same inclination of the subject's head 21 in the anteroposterior direction. It is possible to shoot with high reproducibility.
  • the head tilt setting device 19 is not installed on the arm 13 as in the cephalo X-ray imaging apparatus according to the first embodiment.
  • a head tilt setting device 19 is installed on an X-ray imaging apparatus stand attached to the X-ray imaging apparatus.
  • FIG. 11 shows this X-ray imaging apparatus stand.
  • the X-ray imaging apparatus stand includes a support base 51 placed on the floor, a support bar 52 standing upright with respect to the support base 51, and an upper end of the support bar 52. And a head tilt setting device 19 attached thereto.
  • the support bar 52 is configured to be extendable and retractable, and its length can be adjusted within a predetermined range. For this reason, the height of the head tilt setting device 19 can be adjusted by adjusting the length of the support bar 52, whereby the positional relationship between the head tilt setting device 19 and the head 21 is set to the first. It can be set similarly to the embodiment.
  • the head tilt setting device 19 is the same as that in the first embodiment.
  • the arms 12 and 13 are moved down so that the ear rods 17 and 18 come to the height positions of the left and right outer ear holes of the head 21 of the subject.
  • the arms 12 and 13 are translated inward in the horizontal direction, the ear rods 17 and 18 are inserted into the left and right outer ear holes of the head 21 of the subject, and the uppermost point of the ear rods 17 and 18 contacts the polyon.
  • the head is fixed, and the irradiation direction of the central X-ray is made to coincide with the central axis of the ear rods 17 and 18.
  • the examiner searches for a predetermined reference point on the face of the head 21, specifically, for example, orbitale. And as shown in FIG.
  • the sticker 21 is stuck on this reference point.
  • the X-ray imaging apparatus stand shown in FIG. 11 is moved on the floor surface, and the head tilt setting device 19 attached to the upper end of the support bar 52 is shown in FIG. 4 with respect to the head 21 of the subject.
  • the position should be the same as the position. That is, the head tilt setting device 19 is brought into contact with the outer surface of the arm 13.
  • the inspector uses the angle scale 19a of the head tilt setting device 19 to set a straight line connecting the polyon and the orbitale to a desired angle. Then, by performing X-ray imaging at this position, a lateral head X-ray standard photograph is taken.
  • the head tilt setting device 19 is not installed on the arm 13 as in the cephalo X-ray imaging apparatus according to the first embodiment.
  • a head tilt setting device 19 is installed in an X-ray imaging device chair attached to the X-ray imaging device.
  • FIG. 12 shows the chair for the X-ray imaging apparatus.
  • the chair for X-ray imaging apparatus includes a support base 61 placed on the floor, a support bar 62 standing upright with respect to the support base 61, and an upper end of the support bar 62. It has a main body part 63 attached, a support member 64 attached to the main body part 63, and a head tilt setting device 19 attached to the upper end of the support member 64.
  • the main body 63 includes a seat surface 63a and a backrest 63b.
  • the support bar 62 is configured to be extendable and retractable so that the height of the seat surface 63a can be adjusted.
  • the support member 64 is attached to the back surface of the backrest 63b of the main body 63.
  • the support member 64 includes a horizontal portion and a vertical portion.
  • the horizontal portion is configured to be extendable and contractable in the horizontal direction with respect to the backrest 63b
  • the vertical portion is configured to be extendable and contractable in the direction of the vertical line.
  • the arms 12 and 13 are moved down so that the ear rods 17 and 18 come to the height positions of the left and right outer ear holes of the head 21 of the subject.
  • the arms 12 and 13 are translated inward in the horizontal direction, the ear rods 17 and 18 are inserted into the left and right outer ear holes of the head 21 of the subject, and the uppermost point of the ear rods 17 and 18 contacts the polyon.
  • the head is fixed, and the irradiation direction of the central X-ray is made to coincide with the central axis of the ear rods 17 and 18.
  • the examiner searches for a predetermined reference point on the face of the head 21, specifically, for example, orbitale. And as shown in FIG.
  • the sticker 21 is stuck on this reference point.
  • the head tilt setting device 19 is covered.
  • the position is the same as the position shown in FIG. 4 with respect to the head 21 of the specimen. That is, the head tilt setting device 19 is brought into contact with the outer surface of the arm 13.
  • the inspector uses the angle scale 19a of the head tilt setting device 19 to set a straight line connecting the polyon and the orbitale to a desired angle. Then, by performing X-ray imaging at this position, a lateral head X-ray standard photograph is taken.
  • a method of taking a cephalometric radiograph from an arbitrary direction between the front-rear direction and the front-rear direction When taking a cephalometric radiograph from an arbitrary direction between the rear-front direction and the front-rear direction
  • the head tilt setting device 19 attached to the X-ray imaging apparatus chair shown in FIG. 12 can be used to perform imaging in the same manner as in the first embodiment.
  • FIG. 13 shows a Cephalo X-ray imaging apparatus according to the fourth embodiment.
  • the lower portions 12a and 13a of the arms 12 and 13 can be bent at an angle within a predetermined range with respect to the upper portions 12b and 13b, and fixed at that angle. Be able to.
  • the lower 12a of the arm 12 about the point C 1 in FIG. 13 the lower portion 13a of the arm 13 is adapted to be able to rotate about the point C 2 in FIG. 13.
  • the arms 12 and 13 can be moved up and down in a direction parallel to the reference line 16 independently of each other by the arm control device 14. In other words, the lower portions 12a and 13a of the arms 12 and 13 can be positioned at different heights.
  • an inclination angle of the lower parts 12a and 13a of the arms 12 and 13 with respect to the upper parts 12b and 13b (when the upper parts 12b and 13b are parallel to the vertical line, the angle with respect to the vertical line).
  • An arm lower inclination setting device 71 made of a rectangular transparent plate parallel to the vertical line for setting ⁇ ) is attached.
  • the attachment method of the arm lower inclination setting device 71 is not particularly limited, and any method such as adhesion, clip fastening, and screwing may be used.
  • FIG. 14 is a view of the arm lower inclination setting device 71 attached to the edge of the upper portion 13b of the arm 13 as seen from the direction perpendicular to the surface.
  • the arm lower inclination setting device 71 is formed with an angle scale 71a centered on the points C 1 and C 2 of the lower portions 12a and 13a of the arms 12 and 13, and functions as a protractor.
  • the angle scale 71a is formed at intervals of 10 ° from 0 ° to 90 °.
  • the method of attaching the angle scale 71a is not limited to this, and is formed at intervals of 5 ° or 1 °, for example.
  • an angle scale may be formed by an angle within a specific range, for example, from 0 ° to 30 °.
  • a line whose angle scale 71a is 0 ° is a vertical line.
  • the angle scale 71a is typically formed by, for example, a black colored line as in a normal protractor, but is not limited thereto.
  • the angle scale 71a may be provided on one side of the arm lower inclination setting device 71, but is preferably provided at a position corresponding to each other on both sides.
  • the angle scale 71a at positions corresponding to each other on both surfaces of the arm lower inclination setting device 71, when the angle scale 71a is viewed from the horizontal direction, the direction in which the angle scales 71a on both surfaces coincide is the horizontal direction. If there is no coincidence, it can be determined that there is a deviation from the horizontal direction.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the arms 12 and 13 are translated outward in the horizontal direction so that they are separated from each other by a sufficient distance and moved to a sufficiently high position. Further, the arms 12 and 13 are rotated around the reference line 16 so that the inclination angle ⁇ (see FIG. 10) with respect to the center X-ray of the central axis of the ear rods 17 and 18 becomes a desired angle.
  • the head 21 of the subject is positioned between the arms 12 and 13, and the mid-sagittal plane is at an angle ⁇ (0 ° with respect to the center X-ray from the X-ray tube 11a. ⁇ ⁇ ⁇ 90 °) is inclined.
  • the subject since the mid-sagittal plane is inclined with respect to the floor surface, the subject has, for example, an inclination angle of the seat surface with respect to the floor surface to be able to hold the head 21 at the position. Sit in a chair that can be adjusted and fasten it with a band with the trunk tilted with respect to the vertical line.
  • an arm lower part inclination setting device 71 is used in order to incline the median sagittal surface of the subject's head 21 by an angle ⁇ with respect to the center X-ray. That is, as shown in FIG.
  • the angle scale 71a of the arm lower inclination setting device 71 is used to bend the lower portions 12a and 13a of the arms 12 and 13 to a desired angle ⁇ with respect to the upper portions 12b and 13b.
  • the arms 12 and 13 are lowered independently of each other so that the ear rods 17 and 18 come to the height positions of the left and right outer ear holes of the head 21 of the subject.
  • the arms 12 and 13 are translated inward in the horizontal direction, and the arms 12 and 13 are lowered independently of each other, thereby inserting the ear rods 17 and 18 into the left and right outer ear holes of the head 21 of the subject.
  • the head 21 is fixed by making the uppermost points of the ear rods 17 and 18 contact the polyion.
  • a sticker 21 is attached in advance to a predetermined reference point on the face of the head 21.
  • the examiner views the head tilt setting device 19 from the outside in a direction perpendicular to the head tilt setting device 19. At this time, the seal 21 can also be seen through the head tilt setting device 19.
  • the angle scale 19a of the head tilt setting device 19 is used to set a straight line connecting the polyion and the orbitale to a desired angle ⁇ .
  • a cephalometric radiograph can be taken by performing X-ray photography at this position.
  • a head X-ray can be taken from an arbitrary direction by setting the angles ⁇ and ⁇ in addition to the tilt angle ⁇ in the front-rear direction of the head 21.
  • the cephalometric analysis can be performed three-dimensionally by taking cephalometric radiographs from a plurality of different directions. It is also possible to take a cephalometric radiograph from a plurality of directions and synthesize a three-dimensional image from the plurality of two-dimensional images thus taken.
  • Example 10 By using the head tilt setting device 19 for the lateral cephalometric X-ray photographs and the posterior frontal cephalometric X-ray photographs of subjects 1 to 18, the Frankfurt plane of the head 21 is parallel to the floor surface. Taken with Photographing was performed at a central occlusal position or a position corresponding thereto. 15, 17, 19, 21, 23, 25, 27, 29, 31, 31, 33, 35, 37, 39, 41, 43, 45, 47
  • FIG. 49 shows lateral cephalometric radiographs of subjects 1 to 18, respectively. 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45. 47 and 49, the white line in the horizontal direction is an image of the horizontal plate 20 attached to the lower end of the head tilt setting device 19, and indicates the Frankfurt plane.
  • 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 46, 48 and 50 show posterior anterior cephalometric radiographs of subjects 1 to 18, respectively.
  • FIG. 51 shows a frontal cephalometric radiograph after imaging at a position where the Frankfurt plane of the head 21 of the subject 19 is parallel to the floor surface.
  • FIG. 52 shows a back frontal X-ray standard photograph taken at a high face on the subject 19.
  • FIG. 53 shows a back front X-ray standard photograph taken at a low face of the subject 19.
  • FIG. 54 shows a Cephalo X-ray imaging apparatus according to the fifth embodiment.
  • the horizontal plate 20 protrudes inward from the lower end surface of the head tilt setting device 19 in a direction perpendicular to the head tilt setting device 19. Are in contact.
  • the plan view of the head tilt setting device 19 and the horizontal plate 20 in this state is the same as that shown in FIG.
  • the horizontal plate 20 is configured to be movable up and down by a moving mechanism (not shown), movable in a horizontal plane, or both.
  • the moving mechanism can be installed on the arm 13 or the floor surface.
  • the horizontal plate 20 is raised by a moving mechanism from a position directly below the head tilt setting device 19 indicated by a one-dot chain line in FIG. 54, and is stopped when it comes into contact with the lower end surface of the head tilt setting device 19. Hold that state.
  • the horizontal plate 20 and the head tilt setting device 19 are configured so that the horizontal plate 20 is detachably engaged with the lower end surface when the horizontal plate 20 contacts the lower end surface of the head tilt setting device 19.
  • the moving mechanism can be lowered after the horizontal plate 20 is engaged with the lower end surface of the head tilt setting device 19.
  • the rest of the configuration of the cephalometric X-ray apparatus is the same as that of the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is the same as in the first embodiment.
  • FIGS. 55A and 55B show a folding ruler-shaped horizontal plate 81 used as a horizontal plane confirmation mechanism in the cephalo X-ray imaging apparatus according to the sixth embodiment.
  • FIG. 55A shows a state in which the folding ruler horizontal plate 81 is closed
  • FIG. 55B shows a state in which the folding ruler horizontal plate 81 is opened.
  • the folding ruler-shaped horizontal plate 81 has two elongated strips 81a and 81b that are rotatable around a common rotation axis provided at one end.
  • the folding ruler-shaped horizontal plate 81 is configured to be movable up and down or movable in a horizontal plane by a moving mechanism (not shown) or both.
  • the folding ruler-shaped horizontal plate 81 is brought into contact with the lower end surface of the head tilt setting device 19.
  • the longitudinal direction of the folding ruler-shaped horizontal plate 81 is made parallel to the head tilt setting device 19.
  • the folding ruler-shaped horizontal plate 81 may be used for checking the horizontal plane in the closed state as shown in FIG. 55A, or may be used for checking the horizontal plane in the opened state as shown in FIG. 55B. Good.
  • the tip of the strip-shaped part 81b can be brought close to the face of the head 21 of the subject.
  • the installation position of the folding ruler-shaped horizontal plate 81 relative to the head tilt setting device 19 the length of the folding ruler-shaped horizontal plate 81, the opening angle of the folding ruler-shaped horizontal plate 81, etc., the tip of the strip-shaped portion 81b is covered.
  • the face of the head 21 of the sample can be brought close to a position close to, for example, an orbitale. By doing so, the tilt in the front-rear direction of the head 21 of the subject can be set accurately.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • FIG. 56 shows a horizontal colored line 82 used as a horizontal plane confirmation mechanism in the cephalo X-ray imaging apparatus according to the seventh embodiment.
  • the colored line 82 is typically provided in parallel with the head tilt setting device 19, but may be provided obliquely with respect to the head tilt setting device 19.
  • the colored line 82 is made of a metal such as steel (steel), carbon fiber, plastic, or the like, for example, a surface of a thin linear wire having a cross-sectional diameter of 0.5 mm to 2 mm, glass, plastic, or the like.
  • a visible light beam itself may be used in addition to a linear transparent fiber that is colored by guiding visible light (laser light or light from a light emitting diode) such as red light or green light from its end face.
  • visible light laser light or light from a light emitting diode
  • the horizontal plane can be confirmed by using the colored line 82 instead of the horizontal plate 20.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • FIG. 57 shows an optical device 83 used as a horizontal plane confirmation mechanism in the cephalo X-ray imaging apparatus according to the eighth embodiment.
  • the optical device 83 includes a light source and a scanning mechanism that can irradiate or scan the visible light beam 85 in a horizontal plane.
  • the visible light beam 85 is a beam of light emitted from a laser beam or a light emitting diode.
  • As the visible light beam 85 for example, a red light beam or a green light beam is used.
  • An X-ray shielding cover 84 made of an X-ray shielding material such as lead for protecting the optical device 83 from incident X-rays is provided around the optical device 83.
  • the X-ray shielding cover 84 is appropriately designed so as to shield the optical device 83 from incident X-rays in consideration of the X-ray incident direction.
  • the horizontal plane can be confirmed by using the visible light beam 85 instead of the horizontal plate 20.
  • the visible light beam 85 is irradiated or scanned on the face side of the head 21 of the subject and it can be visually confirmed that the tip of the visible light beam 85 matches the orbitale, the Frankfurt plane of the head 21 is the floor surface. It can be judged that it is parallel to.
  • the sticker 22 is not necessarily applied to the face.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • FIGS. 58A and 58B are views of a folding ruler-shaped horizontal plate 81 used as a horizontal plane confirmation mechanism in the Cephalo X-ray imaging apparatus according to the ninth embodiment, as viewed from the bottom surface side of the head tilt setting device 19.
  • FIG. 58A shows a state in which the folded ruler horizontal plate 81 is closed
  • FIG. 58B shows a state in which the folded ruler horizontal plate 81 is opened.
  • the folding ruler-shaped horizontal plate 81 has two elongated strips 81a and 81b that are rotatable around a common rotation axis provided at one end.
  • the strip-shaped portion 81a of the folding ruler-shaped horizontal plate 81 is attached to the lower end surface of the head tilt setting device 19 in parallel with the head tilt setting device 19 by a method such as adhesion.
  • the folding ruler-shaped horizontal plate 81 may be used for checking the horizontal plane in the closed state as shown in FIG. 58A, or may be used for checking the horizontal plane in the opened state as shown in FIG. 58B. Good. Further, for example, by rotating the strip portion 81b of the folding ruler horizontal plate 81 outward with respect to the strip portion 81a, the tip of the strip portion 81b can be brought close to the face of the head 21 of the subject. it can.
  • the length of the folding ruler-shaped horizontal plate 81, the opening angle of the folding ruler-shaped horizontal plate 81, etc., the tip of the strip-shaped portion 81b is covered.
  • the face of the head 21 of the sample can be brought close to a position close to, for example, an orbitale. By doing so, the tilt in the front-rear direction of the head 21 of the subject can be set accurately.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • FIG. 59 shows a horizontal colored line 82 used as a horizontal plane confirmation mechanism in the cephalo X-ray imaging apparatus according to the tenth embodiment.
  • the colored line 82 is held by holders 86 and 87 on one side surface of the head tilt setting device 19.
  • the colored line 82 is typically provided in parallel with the head tilt setting device 19, but may be provided obliquely with respect to the head tilt setting device 19.
  • This colored wire 82 is made of, for example, a surface of a thin linear wire made of a metal such as steel, carbon fiber, plastic, etc., for example, having a cross-sectional diameter of 0.5 mm or more and 2 mm or less, glass or plastic.
  • a linear transparent fiber made of a material such as red light or green light that is colored by guiding visible light (laser light or light from a light emitting diode) is used.
  • the horizontal plane can be confirmed by using the colored line 82 instead of the horizontal plate 20.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • FIG. 60 shows an optical device 83 used as a horizontal plane confirmation mechanism in the cephalo X-ray imaging apparatus according to the eleventh embodiment.
  • the optical device 83 includes a light source and a scanning mechanism that can irradiate or scan the visible light beam 85 in a horizontal plane.
  • the visible light beam 85 is a beam of light emitted from a laser beam or a light emitting diode.
  • As the visible light beam 85 for example, a red light beam or a green light beam is used.
  • An X-ray shielding cover 84 made of an X-ray shielding material such as lead for protecting the optical device 83 from incident X-rays is provided around the optical device 83.
  • the X-ray shielding cover 84 is fixed to the side surface of the head tilt setting device 19 by a holder 88.
  • the X-ray shielding cover 84 is appropriately designed so as to shield the optical device 83 from incident X-rays in consideration of the X-ray incident direction.
  • the horizontal plane can be confirmed by using the visible light beam 85 instead of the horizontal plate 20.
  • the horizontal line corresponding to the angle 0 ° of the head tilt setting device 19 and the visible light beam 85 coincide.
  • the visible light beam 85 is irradiated or scanned on the face side of the head 21 of the subject and it can be visually confirmed that the tip of the visible light beam 85 matches the orbitale, the Frankfurt plane of the head 21 is the floor surface. It can be judged that it is parallel to. In this case, the sticker 22 is not necessarily applied to the face.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • FIG. 61 shows a head tilt setting device 19 used in the cephalo X-ray imaging apparatus according to the twelfth embodiment.
  • marks 91 and 92 made of an X-ray shielding material such as lead or steel (steel) are provided on the side surface of the head tilt setting device 19.
  • the positions where the marks 91 and 92 are provided are basically arbitrary, but in order to increase the contrast of the marks 91 and 92 on the image obtained by X-ray imaging, the images of the marks 91 and 92 are preferably displayed. Although it is made to come to the area
  • marks 91 and 92 are provided on the side surface of the lower end portion of the head tilt setting device 19.
  • a straight line connecting the center of the mark 91 and the center of the mark 92 is the head tilt setting device 19. It is parallel to the lower end surface.
  • a distance between the center of the mark 91 and the center of the mark 92, that is, a scale indicating the length is appropriately selected, and is, for example, 5 cm or 10 cm.
  • the marks 91 and 92 may be provided on a transparent plate constituting the head tilt setting device 19, may be embedded in the transparent plate, or may be provided through the transparent plate. .
  • the shape of the marks 91 and 92 when the head tilt setting device 19 is viewed from the side may be basically any shape and is selected as necessary. Specifically, for example, Circle, triangle, square, hexagon, etc.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • the head tilt setting device 19 is provided with marks 91 and 92 made of an X-ray shielding material, and a scale indicating the length is provided by these marks 91 and 92. For this reason, when X-ray imaging of the head 21 is performed, in the transmitted X-ray image detected by the X-ray detection unit 15, images of the marks 91 and 92 are also captured in addition to the image of the head 21, and accordingly, A scale indicating this is displayed on the image.
  • the distance between the centers of the marks 91 and 92 on the transmitted X-ray image is enlarged compared to the distance between the centers of the marks 91 and 92 on the head tilt setting device 19.
  • FIG. 62 shows a cephalo X-ray imaging apparatus according to the thirteenth embodiment.
  • a transparent plate 93 is provided on the outer surface of the arm 12 (not shown). Yes.
  • This transparent plate 93 is shown in FIG.
  • the transparent plate 93 is provided with marks 94 and 95 as in the head tilt setting device 19 of the twelfth embodiment. These marks 94 and 95 can be provided in the same positions at the same positions as the marks 91 and 92.
  • FIG. 64 shows an example in which the marks 91 and 92 are provided penetrating in the thickness direction of the head tilt setting device 19. As shown in FIG. 64, the mark 91 has a nail or rivet shape and penetrates in the thickness direction of the head tilt setting device 19.
  • cephalometric X-ray apparatus Other configurations of the cephalometric X-ray apparatus are the same as those of the cephalometric X-ray apparatus according to the first embodiment.
  • the method for performing cephalometric X-ray imaging of a subject using this Cephalo X-ray imaging apparatus is basically the same as that in the first embodiment.
  • the head tilt setting device 19 provided on the outer surface of the arm 13 is provided with marks 91 and 92 made of an X-ray shielding material, and a scale indicating the length is provided by these marks 91 and 92. Further, marks 94 and 95 made of an X-ray shielding material are provided on a transparent plate 93 provided on the outer surface of the arm 12, and a scale indicating the length is provided by these marks 94 and 95.
  • the images of the marks 91 and 92 and the marks 94 and 95 are also included.
  • the distance between the centers of the marks 91 and 92 on the transmitted X-ray image is enlarged compared to the distance between the centers of the marks 91 and 92 on the head tilt setting device 19.
  • the distance between the centers of the marks 94 and 95 on the transmission X-ray image is larger than the distance between the centers of the marks 94 and 95 on the transparent plate 93.
  • FIGS. 65 to 67 is an image of the horizontal plate 20 attached to the lower end of the head tilt setting device 19 and indicates the Frankfurt plane.
  • the images of the marks 91 and 92 are observed as double circles.
  • a double-circle image can be easily obtained in this way by simply using a commercially available steel (steel) nail cut off as the marks 91 and 92.
  • second reference point a predetermined reference point
  • the seal 22 may be affixed on the face at a position, for example, 5 to 20 mm away from the seal in the horizontal direction.
  • the fourteenth embodiment Will describe a method for accurately sticking the seal 22 at a horizontal position from the sticker 22 attached to the orbitale.
  • a circular seal 22 including a small circular region 22a at the center and an annular region 22b surrounding the periphery is used as the seal 22 and the central region 22a.
  • the diameter d of the region 22a and the outer diameter of the region 22b (the outer diameter of the seal 22) D are selected so that the inspector can easily see the seal 22 and the central region 22a.
  • d is selected from 1 mm to 2 mm (for example, 1.5 mm)
  • D is selected from 5 mm to 9 mm (for example, 6.5 mm), but are not limited thereto.
  • the colors of the region 22a and the region 22b are selected so that the inspector can easily see the seal 22 and the central region 22a.
  • the region 22a is selected as white
  • the region 22b is selected as black
  • the region 22a is selected as black
  • the region 22b is selected as red.
  • the present invention is not limited to this.
  • the seal 22 is attached to the orbitale by the method described in the first embodiment so that the center of the seal 22 coincides with the orbitale.
  • the seal 22 is pasted at a position slightly separated in the horizontal direction on the face side from the polyion (for example, a position separated by 3 mm or more and 10 mm or less).
  • FIG. 71A is a plan view of the Frankfurt plane indicator gauge 100
  • FIG. 71B is a front view
  • FIG. 71C is a perspective view.
  • the Frankfurt plane indicator gauge 100 is curved so that the elongated rectangular plate as a whole fits the portion of the head 21 face from the lower part of the face to the ear.
  • the first portion 100a has a shape and is substantially planar, and is composed of a curved second portion 100b and a substantially flat third portion 100c.
  • the first portion 100a is a portion applied to the lower portion of the face of the head 21 and the third portion 100c is a portion applied to the side surface of the head 21, and the length of the first portion 100a is the third length. It is shorter than the length of the part 100c.
  • the Frankfurt plane indicating gauge 100 rotates the first part 100a and the third part 100c around the curved part 100b by applying a force to the first part 100a and the third part 100c. The angle between 100a and the third portion 100c can be changed.
  • the Frankfurt plane indicating gauge 100 is formed of a transparent plastic material such as acrylic or PET, but is not limited to this.
  • the material used or whether it is transparent or opaque is selected as necessary.
  • the upper end surface 100d of the Frankfurt plane indicator gauge 100 is colored, for example, black.
  • a scale (for example, a scale of 1 mm unit) is attached to the upper side surface of the Frankfurt plane indicating gauge 100 so that the distance in the length direction of the Frankfurt plane indicating gauge 100 can be measured.
  • the material is acrylic
  • the length of the first portion 100a is about 3 cm
  • the length of the third portion 100c is about 7 cm
  • the length of the second portion 100b is about
  • the height is about 3 cm
  • the height is about 3 cm
  • the thickness is about 1 mm.
  • the size of the head 21 differs depending on whether it is an adult, a child, a man or a woman, etc., a plurality of types of Frankfurt plane indicating gauges 100 of different sizes are prepared, and the size of the patient's head 21 is determined from among them. It is also effective to select and use the one that fits.
  • the Frankfurt plane indicating gauge 100 is arranged so that the first portion 100 a hits the lower part of the face eye of the head 21 and the third portion 100 c hits the side surface of the head 21. Lightly press against the face of the head 21. Then, the upper end surface 100d of the first portion 100a coincides with the center of the region 22a of the seal 22 affixed to the orbitale, and the upper end surface 100d of the third portion 100c is the region of the seal 22 affixed near the pillion.
  • the Frankfurt plane indicating gauge 100 is positioned so as to coincide with the center of 22a.
  • the upper end surface 100d of the first portion 100a coincides with the lower end of the seal 22 attached to the orbitale, and the upper end surface 100d of the third portion 100c is attached near the polyion.
  • the Frankfurt plane indicating gauge 100 is positioned so as to coincide with the lower end of the sealed seal 22, and the seal 22 is placed on the side surface of the head 21 above the seal 22 previously attached to the side surface of the Frankfurt plane indicating gauge 100. You may affix so that it may correspond with 100d of upper end surfaces of the plane indicator gauge 100. FIG. This also makes it possible to attach the seal 22 with high accuracy to the horizontal position from the seal 22 attached to the orbitale.
  • the fourteenth embodiment by using the seal 22 shown in FIG. 68 and the Frankfurt plane indicating gauge 100 shown in FIGS. 71A, 71B and 71C, the horizontal position from the seal 22 affixed to the orbitale is obtained.
  • the seal 22 can be applied with high accuracy.
  • the head tilt setting device may be, for example, a video camera that captures the head of the subject from the side and a display (such as a liquid crystal display or an organic EL display) that displays an image captured by the video camera.
  • a protractor that measures an inclination angle with respect to a horizontal line centered on the first reference point may be displayed on the display.
  • the head tilt setting device and the horizontal plane confirmation mechanism can be used in combination, and by doing so, the tilt of the head of the subject can be set.

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  • Apparatus For Radiation Diagnosis (AREA)

Abstract

La présente invention porte sur un dispositif d'imagerie par rayons X permettant une imagerie aisée et hautement reproductible de photographies standard radiologiques de tête latérale, de photographies standard radiologiques de tête de direction postéro-antérieure et similaires avec le même état d'inclinaison de la tête du sujet dans la direction antéro-postérieure et étant exempt de risques associés à l'utilisation d'une barre de support de point infraorbital. Le dispositif d'imagerie par rayons X comprend : une paire de bras (12, 13) qui sont fournis tournés l'un vers l'autre ayant une ligne de référence (16) entre ceux-ci et sont aptes à tourner autour de la ligne de référence (16) ; des tiges pour oreille (17, 18) respectivement fournies pour être tournées mutuellement à l'intérieur de surfaces de la paire de bras (12, 13) ; un dispositif de réglage d'inclinaison de tête (19) pour réglage de l'inclinaison antéro-postérieure de la tête du sujet, le dispositif de réglage d'inclinaison de tête (19) étant fourni à un bras (13) ; et un mécanisme de vérification de plan horizontal fourni soit au dispositif de réglage d'inclinaison de tête (19), soit à l'extérieur de celui-ci. Le dispositif de réglage d'inclinaison de tête (19) a la fonction d'un rapporteur pour mesure de l'angle d'inclinaison par rapport à une ligne horizontale, centrée sur un point de référence sur le bras (13) ou sur la tige pour oreille (18).
PCT/JP2013/069464 2012-07-26 2013-07-18 Dispositif d'imagerie par rayons x, procédé de mesure d'inclinaison de tête dans une imagerie par rayons x, support pour dispositif d'imagerie par rayons x, siège pour dispositif d'imagerie par rayons x et dispositif de réglage d'inclinaison de tête WO2014017366A1 (fr)

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US14/415,804 US9265466B2 (en) 2012-07-26 2013-07-18 X-ray radiographic apparatus, method of measuring head tilt in taking radiograph, stand for X-ray radiographic apparatus, chair for X-ray radiographic apparatus, and head tilt setting device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2012-165495 2012-07-26
JP2012165495A JP5100907B1 (ja) 2012-07-26 2012-07-26 Ｘ線撮影装置、ｘ線撮影を行う際の頭部傾き測定方法、ｘ線撮影装置用スタンド、ｘ線撮影装置用椅子および頭部傾き設定装置
JP2012-274275 2012-12-17
JP2012274275 2012-12-17
JP2013108647A JP2014138692A (ja) 2012-12-17 2013-05-23 Ｘ線撮影装置、ｘ線撮影を行う際の頭部傾き測定方法、ｘ線撮影装置用スタンドおよびｘ線撮影装置用椅子
JP2013-108647 2013-05-23

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CN104771189A (zh) * 2015-03-11 2015-07-15 北京朗视仪器有限公司 三维头颅图像对正方法及装置
US20180263579A1 (en) * 2014-12-04 2018-09-20 Trophy Visual indicator for the assessment of the tilt of the frankfort plane in extra oral dental imaging devices

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Publication number Priority date Publication date Assignee Title
JPH0667301A (ja) * 1992-08-24 1994-03-11 Fuji Photo Film Co Ltd 写真作製装置
JP2002125962A (ja) * 2000-10-26 2002-05-08 Toshiba Medical Supply Co Ltd 撮影補助具
JP2002172120A (ja) * 2000-09-26 2002-06-18 Elekta Ab ステレオタクティック用器具
JP2007299038A (ja) * 2006-04-27 2007-11-15 Konica Minolta Medical & Graphic Inc 写真撮影装置
JP2009200612A (ja) * 2008-02-19 2009-09-03 Fujifilm Imaging Co Ltd 画像作成システムおよび画像作成方法

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Publication number Priority date Publication date Assignee Title
JPH0667301A (ja) * 1992-08-24 1994-03-11 Fuji Photo Film Co Ltd 写真作製装置
JP2002172120A (ja) * 2000-09-26 2002-06-18 Elekta Ab ステレオタクティック用器具
JP2002125962A (ja) * 2000-10-26 2002-05-08 Toshiba Medical Supply Co Ltd 撮影補助具
JP2007299038A (ja) * 2006-04-27 2007-11-15 Konica Minolta Medical & Graphic Inc 写真撮影装置
JP2009200612A (ja) * 2008-02-19 2009-09-03 Fujifilm Imaging Co Ltd 画像作成システムおよび画像作成方法

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KAZUO KIMURA: "A study on the postero-anterior cephalograms of human dry skulls : Part 2 Changes of cephalometric images following upper and lower rotation of head", TOHOKU UNIVERSITY DENTAL JOURNAL, vol. 8, no. 1, 30 June 1989 (1989-06-30), pages 51 - 61 *
KAZUO KIMURA: "A Study on the Postero-anterior Cephalograms of Human Dry Skulls. : Part 3 A Stability of Horizontal Referernce Lines", TOHOKU UNIVERSITY DENTAL JOURNAL, vol. 8, no. 2, 28 December 1989 (1989-12-28), pages 99 - 106 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180263579A1 (en) * 2014-12-04 2018-09-20 Trophy Visual indicator for the assessment of the tilt of the frankfort plane in extra oral dental imaging devices
CN104771189A (zh) * 2015-03-11 2015-07-15 北京朗视仪器有限公司 三维头颅图像对正方法及装置

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