WO2007078027A1 - Methode permettant d'effectuer des photographies a l'aide d'un appareil de photographie a rayons x - Google Patents

Methode permettant d'effectuer des photographies a l'aide d'un appareil de photographie a rayons x Download PDF

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Publication number
WO2007078027A1
WO2007078027A1 PCT/KR2006/001098 KR2006001098W WO2007078027A1 WO 2007078027 A1 WO2007078027 A1 WO 2007078027A1 KR 2006001098 W KR2006001098 W KR 2006001098W WO 2007078027 A1 WO2007078027 A1 WO 2007078027A1
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WO
WIPO (PCT)
Prior art keywords
sensor
photographing
ray
panoramic
ray source
Prior art date
Application number
PCT/KR2006/001098
Other languages
English (en)
Inventor
Tae Woo Kim
Young Kyu Seo
Original Assignee
Vatech Co., Ltd
E-Woo Technology Co., Ltd
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
Application filed by Vatech Co., Ltd, E-Woo Technology Co., Ltd filed Critical Vatech Co., Ltd
Publication of WO2007078027A1 publication Critical patent/WO2007078027A1/fr

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Classifications

    • 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
    • A61B6/50—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
    • A61B6/501—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 diagnosis of the head, e.g. neuroimaging or craniography
    • 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
    • A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
    • A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
    • A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
    • A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT

Definitions

  • the present invention relates to a method for photographing using an X-ray photographing apparatus, more particularly, to a method for photographing using an X-ray photographing apparatus, which can vary a distance between an X-ray source part and an X-ray sensor part arranged on a rotary arm and opposed to each other, thereby conducting panoramic photographing, computerized tomography (CT) photographing and cephalometric photographing.
  • CT computerized tomography
  • Tomography imaging apparatus is a photographing apparatus in which an X-ray beam of a predetermined amount is transmitted to a patient' s site to be imaged or photographed, the transmitted X-ray amount is measured by an X-ray sensor and the measured data is recorded in a memory, and an X-ray absorbing rate of each point of the captured bodily region of the patient is obtained by a computer and is reconstructed into an image.
  • an X-ray panoramic photographing apparatus is an apparatus for conducting tomography while rotating along a locus suitable for the form of a dental arch.
  • a cephalometric imaging apparatus is a photographing apparatus which is mainly used for corrective orthodontics or orthognatic surgery, and is to take a photograph of a patient's head.
  • the conventional X-ray CT photographing apparatus can obtain only a CT image
  • the conventional panoramic photographing apparatus can obtain only a photographic image. Therefore, recently, combined panoramic and computed tomography photographing apparatuses have been proposed.
  • U.S. Patent No. 6118842 discloses an X-ray imaging apparatus which can conduct both the CT imaging and the panoramic imaging.
  • the apparatus includes: an X-ray source for generating X-rays, an X-ray sensor for detecting X-rays having passed through an object, and supporting means for supporting the X-ray source and the X-ray sensor so that the X-ray source and the X-ray sensor are opposed to each other across an object; and mode switching means for switching between a CT mode and a panorama mode.
  • mode switching means for switching between a CT mode and a panorama mode.
  • To detect X-rays only one X-ray sensor is used, and the X-ray sensor is an area sensor which is capable to detect a large area.
  • the X-ray imaging apparatus can obtain the tomography image by converting the photographic mode into the panoramic mode after obtaining the CT image by selecting the CT mode.
  • various X-ray photographing apparatus for conducting not only panoramic photographing but also cephalometric photographing have been disclosed.
  • U.S. Patent Nos. 6628753 and 6829326 discloses an X-ray photographing apparatus and a method for photographing using the same, which can conduct not only panoramic photographing but also cephalometric photographing.
  • the apparatus and method can conduct the cephalometric photographing after bypassing a position of a linear detector camera, for instance, manually moving a diaphragm of a collimator, so that the linear detector camera does not detect X-rays generated from an X-ray source. Disclosure of Invention Technical Problem
  • the present invention provides a method for photographing using an X-ray photographing apparatus including a panoramic and CT photographing part and a cephalometric photographing part, wherein the panoramic and CT photographing part includes: i) a rotary arm supporting member; ii) a rotary arm on which an X-ray source part and an X-ray sensor part having a panoramic sensor and/or a CT sensor are opposed to each other; and iii) a rotary arm driving means, the method comprising the steps of: 1) locating a patient's head part (object) on a photographed position; T) varying and regulating a distance between the X-ray source part and the X-ray sensor part of the rotary arm according to panoramic photographing or CT photographing; and 3) irradiating X-rays to the object to photograph the object.
  • the X-ray source part is horizontally moved and regulated in a direction to get near to or away from the X-ray sensor part irrespective of the rotary arm.
  • the X-ray sensor part further includes a sensor mounting part on which a sensor is detached or attached.
  • the method for photographing using the X-ray photographing apparatus further comprises the step of mounting the panoramic sensor on the sensor mounting part of the X-ray sensor part before the T) step in case of the panoramic photographing, and further comprises the step of mounting the panoramic sensor on the sensor mounting part of the X-ray sensor part before the T) step in case of the CT pho- tographing.
  • the X-ray sensor part includes a first sensor mounting part on which the panoramic sensor is mounted and a second sensor mounting part on which the CT sensor is mounted, the first sensor mounting part being located near to the X-ray source part, the second sensor mounting part being located away from the X-ray source part.
  • the photographing method further comprises the step of separating the panoramic sensor from the first sensor mounting part not to detect X-rays generated from the X-ray source part.
  • the X-ray sensor part includes a first sensor mounting part on which the panoramic sensor is mounted and a second sensor mounting part on which the CT sensor is mounted, the first sensor mounting part being located near to the X-ray source part, the second sensor mounting part being located away from the X-ray source part, and in case of the CT photographing, before the 3) step, the photographing method further comprises the step of sliding the first sensor mounting part, on which the panoramic sensor is mounted, in a predetermined direction not to detect X-rays generated from the X-ray source part.
  • the X-ray sensor part includes a first sensor mounting part on which the panoramic sensor is mounted and a second sensor mounting part on which the CT sensor is mounted, and is rotated on a central axis, which is a central point between the panoramic sensor and the CT sensor mounted thereon, irrespective of the rotary arm.
  • the X-ray sensor part is rotated and regulated in such a manner as to locate the CT sensor nearer to the X-ray source part than the panoramic sensor
  • the X-ray sensor part is rotated and regulated in such a manner as to locate the panoramic sensor nearer to the X-ray source part than the CT sensor.
  • the X-ray sensor part includes a first sensor mounting part on which the panoramic sensor is mounted and a second sensor mounting part on which the CT sensor is mounted, and is rotated on an eccentric axis which is located at a predetermined point between a central point between the panoramic sensor and the CT sensor and the CT sensor, irrespective of the rotary arm.
  • the X-ray sensor part is rotated and regulated in such a manner as to locate the CT sensor nearer to the X-ray source part than the panoramic sensor
  • the X-ray sensor part is rotated and regulated in such a manner as to locate the panoramic sensor nearer to the X-ray source part than the CT sensor.
  • a line for connecting the X-ray source part and the X-ray sensor part with each other is located on the same line as a line for connecting the cephalometric sensor and the X-ray source part with each other, and in case of the cephalometric photographing, before the 3) step, the photographing method further comprises a step of separating the sensor mounted on the X-ray sensor part.
  • a line for connecting the X-ray source part and the X-ray sensor part with each other is located on the same line as a line for connecting the cephalometric sensor and the X-ray source part with each other, and in case of the cephalometric photographing, before the 3) step, the photographing method further comprises a step of horizontally moving the X-ray sensor part in a vertical direction to a longitudinal direction of the rotary arm irrespective of the rotary arm.
  • a line for connecting the X-ray source part and the X-ray sensor part with each other keeps a predetermined angle in regard to a line for connecting the cephalometric sensor and the X-ray source part with each other, and in case of the cephalometric photographing, before the 3) step, the photographing method further comprises a step of horizontally moving the X-ray sensor part in a vertical direction to a longitudinal direction of the rotary arm irrespective of the rotary arm so that the cephalometric sensor detects X-rays generated from the X-ray source part.
  • a line for connecting the X-ray source part and the X-ray sensor part with each other keeps a predetermined angle in regard to a line for connecting the cephalometric sensor and the X-ray source part with each other, and in case of the cephalometric photographing, before the 3) step, the photographing method further comprises a step of tilting the X-ray source part in a predetermined direction so that the cephalometric sensor detects X-rays generated from the X-ray source part.
  • the panoramic sensor which is used for the panoramic photographing is used as a cephalometric sensor.
  • An enlargement ratio means a ratio of a distance between the object and the X-ray source part to a distance between the X-ray sensor part or a cephalometric sensor and the X-ray source part, and in case of the CT photographing, in the 2) step, the enlargement ratio is 1: 1.3 to 1:2, and particularly, 1: 1.5 or 1:1.6. In addition, in case of the panoramic photographing, in the 2) step, the enlargement ratio is 1: 1.1 to 1:1.6, and particularly, 1: 1.3.
  • the method for photographing using an X-ray photographing apparatus provides an effect to take all of a panoramic image, a CT image and a cephalometric image by using one X-ray photographing apparatus. Furthermore, the present invention allows the user to take an image in the optimum enlargement ratio according to whether the panoramic photographing or the CT photographing is conducted, by varying and regulating a distance between the X-ray source part and the X-ray sensor part. Additionally, the photographing method according to the present invention provides another effect to simply conduct the cephalometric photographing after removing a panoramic sensor and/or a CT censor or moving and aligning an X-ray sensor part or an X-ray source part.
  • the present invention uses a dedicated X-ray sensor for panoramic photographing and a dedicated X-ray sensor for CT photographing, thereby reducing costs.
  • FIGS. 1 to 9 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a first preferred embodiment of the present invention.
  • FIGS. 10 to 14 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a second preferred embodiment of the present invention.
  • FIGS. 15 to 18 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a third preferred embodiment of the present invention.
  • FIGS. 19 to 21 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a fourth preferred embodiment of the present invention.
  • FIGS. 1 to 9 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a first preferred embodiment of the present invention, wherein FIG. 1 is a perspective view of the X-ray photographing apparatus, FIG. 2 is a flow chart for explaining the method for photographing using the X-ray photographing apparatus, FIGS. 3 to 5 are front views of the X-ray photographing apparatus for explaining panoramic photographing and CT photographing, and FIGS. 6 to 9 are plan views and a front view of the X-ray photographing apparatus for explaining cephalometric photographing.
  • the X-ray photographing apparatus 100 which is a combined panoramic, computed tomography and cephalometric photographing apparatus, includes a base 195, a supporting pole 190, an elevation member 170, a panoramic and CT photographing part 100a, and a cephalometric photographing part 100b, and can conduct CT photographing, panoramic photographing, and cephalometric photographing.
  • the base 195 supports the supporting pole 190 on which the above components are mounted, and the supporting pole 190 stands and is mounted at a side of the base 195.
  • the elevation member 170 is mounted on the supporting pole 190.
  • the elevation member 170 includes a control motor for allowing a vertical displacement. Therefore, the apparatus 100 can regulate its own height according to a patient's height.
  • the panoramic and CT photographing part 100a is mounted on the front surface of the elevation member 170, and the cephalometric photographing part 100b is connected to a side of the elevation member 170.
  • a chin supporting member 180 is mounted at the lower portion of the elevation member 170 in nearly orthogonal direction to the elevation member 170.
  • the rotary arm supporting member 150 is mounted at the upper portion of the elevation member 170 in nearly orthogonal direction to the elevation member 170.
  • the rotary arm supporting member 150 supports the rotary arm 140 by the rotary arm driving means 160.
  • the rotary arm supporting member 150 has lines (not shown) formed to allow movement of the rotary arm driving means 160, so that the rotary arm driving means 160 can move along the lines.
  • the rotary arm driving means 160 moves in a longitudinal direction (X-axis movement) of the rotary arm supporting member 150 and in a horizontal direction (Y-axis movement) which is orthogonal to the X-axis movement direction. Furthermore, the rotary arm driving means 160 can be rotated on a central axis. That is, The X-ray photographing apparatus conducts the CT photographing or the panoramic photographing by driving the rotary arm 140.
  • the rotary arm driving means 160 rotates the rotary arm 140 on the central axis in order to conduct photographing
  • the rotary arm driving means 160 drives the rotary arm 140 on the X-axis and the Y-axis and drives the rotary arm 140 rotationally in order to conduct photographing.
  • the rotary arm supporting member 150 and the elevation member 170 respectively includes mechanical components, such as a control motor, therein which are necessary for driving of the rotary arm driving means 160, and a rotary arm driving means controller for controlling the rotary arm driving means 160 to move the rotary arm 140 along the fixed locus according to the CT photographing or the panoramic photographing.
  • the mechanical function will not be described since it is clear to those skilled in the art.
  • the X-ray source part 110 is connected to an end of the rotary arm 140, and the X- ray sensor part 120 is connected to the other end of the rotary arm 140.
  • the X-ray sensor part 120 and the X-ray source part 110 are opposed to each other.
  • the X-ray source part 110 emits and irradiates X-rays to a patient 130 or an object.
  • the X-ray source part 110 includes an X-ray source and a collimator, so that the emitted X-rays pass through the object and are irradiated to the X-ray sensor part 120.
  • the X-ray source part 110 can be driven irrespective of the driving of the rotary arm 140. That is, X-ray source part driving means 115 is mounted at a part where the rotary arm 140 and the X-ray source part 110 are connected with each other, so that the X-ray source part 110 can be moved. Therefore, the X-ray source part 110 can be moved in a direction to get near to the X-ray sensor part 120 or in a direction to get away from the X-ray sensor part 120 irrespective of the rotary arm 140.
  • the X-ray photographing appratus can conduct photographing by moving or tilting the X-ray source part 110 irrespective of the rotary arm 140 using the X-ray source part driving means 115.
  • the rotary arm 140 includes mechanical components, such as a control motor, therein necessary for driving the X-ray source part 110.
  • the CT photographing or the panoramic photographing can be conducted by varying a distance between the object 130 and the X-ray source part 110 and regulating an enlargement ratio. Referring to FIGS. 2 to 9, the operation of the present invention will be described in more detail.
  • the X-ray sensor part 120 is to convert X-rays into electric signals.
  • the X-ray sensor part 120 detects X-rays generated from the X-ray source part 110, obtains an image, and transmits the obtained image to the outside.
  • the X-ray sensor part 120 is fixed on the rotary arm 140, and includes a sensor mounting part 122 for detaching and attaching a sensor 121.
  • the sensor 121 may be a panoramic sensor or a CT sensor. Therefore, to conduct the CT photographing, a user selects the CT sensor and mounts the CT sensor onto the sensor mounting part 122 manually. To conduct the panoramic photographing, the user separates the CT sensor from the sensor mounting part 122 and mounts the panoramic sensor onto the sensor mounting part 122 manually. That is, in the present invention, the CT sensor for dedicated use of the CT photographing and the panoramic sensor for dedicated use of the panoramic photographing are used according to their use purpose.
  • the sensor mounting part 122 may have one of various shapes besides a slot form shown in the drawings.
  • Second head fixing means 185 is located between the X-ray source part 110 and the
  • the second head fixing means 185 is in the form of a hair band for surrounding the forehead part of the object (patient) 130, and fixes the head part of the patient. That is, the second head fixing means 185 serves to fix the patient's head part together with the chin supporting member 180.
  • connection member 16 is in the form of a straight- shaped bar, and connects the horizontal arm 15 and the elevation member 170 with each other.
  • connection member 16 is not restricted to the above form, and may have one of various forms such as a curved form and reduce a length of the horizontal arm 15.
  • the horizontal arm 15 includes the cephalometric sensor part 11 mounted on a side thereof.
  • the cephalometric sensor part 11 has a cephalometric sensor mounting part 12 on which a cephalometric sensor is attached and detached, so that the cephalometric sensor 13 is attached and detached manually.
  • the cephalometric sensor 13 may be a line scan sensor such as a single line scan sensor or a multi line scan sensor, and in this case, the panoramic sensor 121 may be used as the cephalometric sensor 13.
  • the line scan type sensor needs the collimator 14 for converting X-rays into parallel rays. Therefore, the collimator 14 is mounted on the other side of the horizontal arm 15 in such a way as to be opposed to the cephalometric sensor 13.
  • the first head fixing means 17 is mounted at a predetermined location of the horizontal arm 15 in order to fix the patient's head part (object) 18.
  • the object is located at a photographed position (Sl).
  • (object) is located on the second head fixing means 185 in case of the panoramic photographing or the CT photographing, but located on the first head fixing means 17 in case of the cephalometric photographing.
  • a distance between the X-ray source part 110 and the X-ray sensor part 120 disposed on the rotary arm 140 is varied and adjusted according to the panoramic photographing or the CT photographing (S2).
  • the distance between the X-ray source part 110 and the X-ray sensor part 120 may be varied and not varied.
  • the 120 can be adjusted by setting the optimum enlargement ratio according to the panoramic photographing, the CT photographing and the cephalometric photographing.
  • the patient's head part is located on the chin supporting member 180, and fixed by the head fixing means 185.
  • X-ray source part 110 is not fixed on the rotary arm 140 but movable by the X-ray source part driving means 115.
  • the panoramic sensor 121 is mounted on the sensor mounting part 122 disposed on the X-ray sensor part 120.
  • the panoramic sensor 121 may use a line scan sensor such as a single line scan sensor or a multi line scan sensor.
  • the user horizontally moves the X-ray source part 110 in the direction to get near to the X-ray sensor part 120 using the X-ray source part driving means 115.
  • the enlargement ratio means a ratio of the distance between the object 130 and the
  • the obtained image is enlarged when the enlargement ratio is increased.
  • the enlargement ratio is too large, it is harmful to the patient since an amount of the generated X-rays is increased.
  • the enlargement ratio is too small, it is difficult to form a mechanical structure. Therefore, it is preferable to conduct photographing after selecting the optimum enlargement ratio in order to make the mechanical structure easy and obtain a good image.
  • the enlargement ratio is about 1: 1.3. That is, the user horizontally moves the X-ray source part 110 in the direction to get near to the X-ray sensor part 120 using the X-ray source part driving means 115, and then, conducts the panoramic photographing.
  • (object) 130 is located on the chin supporting member 180, and then, fixed by the second head fixing means 185.
  • the user separates the panoramic sensor 121 from the sensor mounting part 122, and then, exchanges the panoramic sensor 121 with the CT sensor 121.
  • the patient's head part may be located on the chin supporting member 180 after the CT sensor 121 is previously exchanged with the panoramic sensor 121.
  • the CT sensor may be an area sensor such as a single area sensor or a multi area sensor, or a sensor of a sequentially driving type.
  • the user horizontally moves the X-ray source part 110 in a direction to get away from the X-ray sensor part 120 using the X- ray source part driving means 115.
  • the enlargement ratio is 1:1.3 to 1:2. Particularly, it is preferable that the enlargement ratio is 1:1.6 when the patient's anterior teeth part is took by the CT photographing, but 1:1.5 when the patient's posterior teeth part is took by the CT photographing.
  • the user sets the central axis (x) on a predetermined part of the patient' s head part, and then, rotates the rotary arm 140 on the central axis to conduct photographing.
  • the X-rays generated from the X-ray source part 110 are emitted and irradiated to the object 130, and the X-rays passing through the object 130 are detected by the X-ray sensor part 120 to conduct photographing.
  • X-ray sensor part 120 in the X-ray photographing apparatus 100 is located on the same line with a line for connecting the cephalometric sensor 11 with the X-ray source part 110.
  • the user fixes the patient's head part (object) 130 using the first head fixing means 17.
  • the user varies the X-ray source part 110 in a direction to get near to or away from the X-ray sensor part 120 using the X-ray source part driving means 115 to move the X-ray source part 110 horizontally.
  • the enlargement ratio is nearly 1: 1 which means a distance (c) between the object 18 and the X-ray source part 110 to a distance (d) between the cephalometric sensor part 11 and the X-ray source part 110.
  • the cephalometric photographing can be conducted without varying the distance between the X-ray source part 110 and the X- ray sensor part 120, but if it is necessary to regulate the enlargement ratio, the X-ray source part 110 is moved, and then, the cephalometric photographing is conducted.
  • the sensor 121 mounted on the sensor mounting part 122 of the X-ray sensor part 120 is separated. That is, the user separates the sensor 121 from the sensor mounting part 122 so as not to detect X-rays generated from the X-ray source part 110. Therefore, the X-rays irradiated from the X-ray source part 110, the collimator 14 and the cephalometric sensor 13 are arranged in a line.
  • the step of separating the sensor 121 from the sensor mounting part 122 may be carried out at any step before the step of emitting and irradiating the X-rays to conduct photographing.
  • the user scans the patient's head part (object) 130 and conducts the cephalometric photographing. That is, the X-rays generated from the X-ray source part 110 are irradiated to the object 130, and the X-rays passing through the object 130 are detected from the cephalometric sensor 13 to conduct photographing.
  • the user can easily conduct the cephalometric photographing by separating the panoramic sensor or the CT sensor from the sensor mounting part 122.
  • the cephalometric photographing may be conducted by mounting the panoramic sensor, which was used for panoramic photographing, on the cephalometric sensor mounting part 12.
  • the cephalometric sensor 13 may be a line scan sensor.
  • a line for connecting the X-ray source part 110 with the X-ray sensor part 120 in the X-ray photographing apparatus 100 keeps a predetermined angle in regard to a line for connecting the cephalometric sensor 11 with the X-ray source part 110.
  • the user fixes the patient's head part (object) 130 with the first head fixing means 17.
  • the user varies the X-ray source part 110 in a direction to get near to or away from the X-ray sensor part 120 using the X-ray source part driving means 115 to move the X-ray source part 110 horizontally. If necessary, the cephalometric photographing can be conducted without varying the distance between the X-ray source part 110 and the X-ray sensor part 120.
  • the X-ray source part 110 is moved in a horizontal direction to the longitudinal direction of the rotary arm 140 without regard from the rotary arm 140 so that the cephalometric sensor detects the X-rays generated from the X-ray source part 110. Therefore, the X-rays irradiated from the X-ray source part 110-1, the collimator 14 and the cephalometric sensor 13 are arranged in a line.
  • the step of horizontally moving the X-ray source part 110 in the vertical direction to the longitudinal direction of the rotary arm 140 may be carried out at any step before the step of emitting and irradiating the X-rays to conduct photographing.
  • the user scans the patient's head part (object) 130 and conducts the cephalometric photographing. That is, the X-rays generated from the X-ray source part 110 is irradiated to the object 130, and the X-rays passing through the object 130 is detected from the cephalometric sensor 13 to conduct photographing.
  • a line for connecting the X-ray source part 110 with the X-ray sensor part 120 in the X-ray photographing apparatus 100 keeps a predetermined angle in regard to a line for connecting the cephalometric sensor 11 with the X-ray source part 110.
  • the user fixes the patient's head part (object) 130 with the first head fixing means 17.
  • the user varies the X-ray source part 110 in a direction to get near to or away from the X-ray sensor part 120 using the X-ray source part driving means 115 to move the X-ray source part 110 horizontally. If necessary, the cephalometric photographing can be conducted without varying the distance between the X-ray source part 110 and the X-ray sensor part 120.
  • the X-ray source part 110 is tilted in a predetermined direction irrespective of the rotary arm 140. That is, the X-ray source part 110 is tilted so that the cephalometric sensor detects the X-rays generated from the X-ray source part 110. Therefore, the X- rays irradiated from the X-ray source part 110-1, the collimator 14 and the cephalometric sensor 13 are arranged in a line. If the X-rays irradiated from the X-ray source part 110 is not in a line with the collimator 14 and the cephalometric sensor 13, the rotary arm 140 is moved in a longitudinal direction of the rotary arm supporting member 150. In this case, the step of tilting the X-ray source part 110 may be carried out at any step before the step of emitting and irradiating the X-rays to conduct photographing.
  • the user scans the patient's head part (object) 130 and conducts the cephalometric photographing. That is, the X-rays generated from the X-ray source part 110 is irradiated to the object 130, and the X-rays passing through the object 130 is detected from the cephalometric sensor 13 to conduct photographing.
  • FIGS. 10 to 14 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a second preferred embodiment of the present invention, wherein FIG. 10 is a perspective view of the X-ray photographing apparatus, FIGS. 11 and 12 are front views of the X-ray photographing apparatus for explaining the panoramic photographing and the CT photographing, and FIGS. 13 and 14 are a plan view and a front view of the X-ray photographing apparatus for explaining the cephalometric photographing.
  • the X-ray photographing apparatus 200 includes a base 195, a supporting pole 190, an elevation member 170, a panoramic and CT photographing part 200a, and a cephalometric photographing part 200b, and can conduct CT photographing, panoramic photographing, and cephalometric photographing.
  • the panoramic and CT photographing part 200a is mounted on the front surface of the elevation member 170, and the cephalometric photographing part 200b is connected to a side of the elevation member 170.
  • the panoramic and CT photographing part 200a will be described in detail.
  • the X- ray source part 110 is connected to an end of the rotary arm 240, and the X-ray sensor part 220 is connected to the other end of the rotary arm 240.
  • the X-ray source part driving means 215 is mounted at a part where the rotary arm
  • the X-ray source part 210 can be configured for movement in a direction to get near to the X-ray sensor part 220 or in a direction to get away from the X-ray sensor part 220 irrespective of the rotary arm 240.
  • the X-ray source part driving means 215 can conduct photographing by horizontally moving or tilting the X-ray source part 210 separately from the rotary arm 240.
  • the X-ray sensor part 220 is fixed on the rotary arm 240 and includes a first sensor mounting part 222 for mounting a panoramic sensor 221 thereon and a second sensor mounting part 224 for mounting a CT sensor 223 thereon.
  • the first sensor mounting part 222 is disposed at a portion which is near to the X-ray source part 210
  • the second sensor mounting part 224 is disposed at a portion which is away from the X-ray source part 210 in order to regulate the enlargement ratio.
  • a horizontal arm 15 having a cephalometric sensor part 11, a collimator 18 and first heading fixing means 17 is connected to a side of the elevation member 170 by a connection member 16.
  • the cephalometric sensor part 11 has a cephalometric sensor mounting part 12 on which a cephalometric sensor is attached and detached, so that the cephalometric sensor 13 is attached and detached manually.
  • the X-ray photographing apparatus according to the second preferred embodiment of the present invention has the same structure as the X-ray photographing apparatus according to the first preferred embodiment.
  • FIGS. 11 and 12 the panoramic photographing and the CT photographing methods will be described. A description of the method for photographing using the X-ray photographing apparatus 200 will be omitted since the method for photographing using the X-ray photographing apparatus 200 is the same as the first preferred embodiment of the present invention shown in FIGS. 3 and 4.
  • the patient's head part (object) 130 is located on the chin supporting member 180, and fixed by the second head fixing means 185.
  • the user moves the X-ray source part 210 in the direction to get near to or away from the X-ray sensor part 220 using the X-ray source part driving means 215.
  • the panoramic sensor 221 is separated from the first sensor mounting part 222 so as not to detect X-rays generated from the X-ray source part 210. Moreover, not shown in the drawings, but the first sensor mounting part 222 may be slid in a predetermined direction.
  • the step of separating the panoramic sensor 221 from the sensor mounting part 222 or sliding the sensor mounting part 222 may be carried out at any step before the step of emitting and irradiating the X-rays to conduct the CT photographing.
  • the user sets the central axis (x) on a predetermined part of the patient's head part, and then, rotates the rotary arm 240 on the central axis to conduct the CT photographing.
  • the X-rays generated from the X-ray source part 210 are irradiated to the object 130, and the X-rays passing through the object 130 are detected by the X-ray sensor part 220 to conduct the CT photographing.
  • a line for connecting the X-ray source part 210 with the X-ray sensor part 220 in the X-ray photographing apparatus 200 is located on the same line with a line for connecting the cephalometric sensor 11 with the X-ray source part 210.
  • the user fixes the patient's head part (object) 130 by the first head fixing means 17.
  • the user varies the X-ray source part 210 in a direction to get near to or away from the X-ray sensor part 220 using the X-ray source part driving means 215 to move the X-ray source part 210 horizontally. If necessary, the cephalometric photographing may be conducted without varying the distance between the X-ray source part 210 and the X-ray sensor part 220.
  • the panoramic sensor 221 and the CT sensor 223 of the X-ray sensor part 220 are separated from the first sensor mounting part 222 and the second sensor mounting part 224. That is, the user separates the sensors 221 and 223 from the sensor mounting parts 222 and 224 so as not to detect X-rays generated from the X-ray source part 210. Therefore, the X-rays irradiated from the X-ray source part 210, the collimator 14 and the cephalometric sensor 13 are arranged in a line.
  • the step of separating the panoramic sensor 221 and the CT sensor 223 from the sensor mounting parts 222 and 224 may be carried out at any step before the step of emitting and irradiating the X-rays to conduct photographing.
  • the user scans the patient's head part (object) 130 and conducts the cephalometric photographing. That is, the X-rays generated from the X-ray source part 210 is irradiated to the object 130, and the X-rays passing through the object 130 is detected from the cephalometric sensor 13 to conduct photographing.
  • the cephalometric photographing method according to the second preferred embodiment is the same as the cephalometric photographing method illustrated in FIGS. 6 and 7, the cephalometric photographing method illustrated in FIG. 8 and the cephalometric photographing method illustrated in FIG. 9.
  • FIGS. 15 to 18 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a third preferred embodiment of the present invention, wherein FIG. 15 is a perspective view of the X-ray photographing apparatus, FIGS. 16 and 17 are front views of the X-ray photographing apparatus for explaining the panoramic photographing and the CT photographing, and FIG. 18 is a plan view of the X-ray photographing apparatus for explaining the cephalometric photographing.
  • the X-ray photographing apparatus 300 includes a base 195, a supporting pole 190, an elevation member 170, a panoramic and CT photographing part 300a, and a cephalometric photographing part 300b, and can conduct CT photographing, panoramic photographing, and cephalometric photographing.
  • the panoramic and CT photographing part 300a is mounted on the front surface of the elevation member 170, and the cephalometric photographing part 300b is connected to a side of the elevation member 170.
  • the panoramic and CT photographing part 300a will be described in detail.
  • the X- ray source part 310 is connected to an end of the rotary arm 340, and the X-ray sensor part 320 is connected to the other end of the rotary arm 340.
  • the X-ray source part driving means 315 is mounted at a part where the rotary arm
  • the X-ray source part 310 can be configured for movement in a direction to get near to the X-ray sensor part 320 or in a direction to get away from the X-ray sensor part 320 irrespective of the rotary arm 340.
  • the X-ray source part driving means 315 can conduct photographing by horizontally moving or tilting the X-ray source part 310 separately from the rotary arm 340.
  • the X-ray source part driving means 315 is mounted at a location where the rotary arm 340 and the X-ray source part 310 are connected with each other, so that the X-ray source part 310 can be rotated and moved.
  • the X-ray sensor part 320 includes a first sensor mounting part 322 for mounting a panoramic sensor 321 thereon and a second sensor mounting part 324 for mounting a CT sensor 323 thereon.
  • the first sensor mounting part 322 is disposed at a portion which is near to the X-ray source part 310
  • the second sensor mounting part 324 is disposed at a portion which is away from the X-ray source part 310 in order to regulate the enlargement ratio.
  • a horizontal arm 15 having a cephalometric sensor part 11, a collimator 18 and first heading fixing means 17 is connected to a side of the elevation member 170 by a connection member 16.
  • the cephalometric sensor part 11 has a cephalometric sensor mounting part 12 on which a cephalometric sensor is attached and detached, so that the cephalometric sensor 13 is attached and detached manually.
  • the third preferred embodiment of the present invention has the same structure as the X-ray photographing apparatus according to the first preferred embodiment.
  • the patient's head part (object) 130 is located on the chin supporting member 180, and fixed by the second head fixing means 185.
  • the user mounts the panoramic sensor 321 on the first sensor mounting part 322 of the X-ray sensor part 320.
  • the X-ray sensor part driving means 325 can rotate the X-ray sensor part 320 on a central axis which is a central point located between the panoramic sensor 321 and the CT sensor 323.
  • a distance (b, b') between the panoramic sensor 321 or the CT sensor 323 and the X-ray source part 310 is the same.
  • the user can conduct the photographing while regulating the enlargement ratio differently since the distance can be regulated.
  • the user sets a rotation axis of the rotary arm 340 after setting the central axis
  • (object) 130 is located o the chin supporting member 180, and then, fixed by the second head fixing means 185.
  • the user rotates the X-ray sensor part 320 using the X-ray sensor driving means 325. That is, the X-ray sensor part 320 is rotated on the central axis which is the central point located between the panoramic sensor 321 and the CT sensor 323 in order to locate the CT sensor 323 nearer to the X-ray source part 310 than the panoramic sensor 321.
  • the user horizontally moves the X-ray source part 310 in a direction to get away from the X-ray sensor part 320 using the X-ray sensor part driving means 325 to obtain the optimum enlargement ratio.
  • the user sets the central axis (x) on a predetermined part of the patient's body, and then, rotates the rotary arm 340 along the circumference of the central axis to conduct the CT photographing.
  • a line for connecting the X-ray source part 310 with the X-ray sensor part 320 in the X-ray photographing apparatus 300 is located on the same line with a line for connecting the cephalometric sensor 11 with the X-ray source part 310.
  • the user fixes the patient's head part (object) 130 with the first head fixing means 17.
  • the user varies the X-ray source part 310 in a direction to get near to or away from the X-ray sensor part 320 using the X-ray source part driving means 315 to move the X-ray source part 310 horizontally. If necessary, the cephalometric photographing can be conducted without varying the distance between the X-ray source part 310 and the X-ray sensor part 320.
  • the X-ray sensor part 320 is configured for movement in a vertical direction to the longitudinal direction of the rotary arm 340 without regard from the rotary arm 340. Therefore, X-rays generated from the X-ray source part 310 are not detected by the X-ray sensor part 320-1, and the X-rays irradiated from the X-ray source part 310, the collimator 14 and the cephalometric sensor 13 are arranged in a line.
  • the step of horizontally moving the X-ray source part 310 in the vertical direction to the longitudinal direction of the rotary arm 340 may be carried out at any step before the step of emitting and irradiating the X-rays to conduct photographing.
  • the user scans the patient's head part (object) 130 and conducts the cephalometric photographing. That is, the X-rays generated from the X-ray source part 310 are irradiated to the object 130, and the X-rays passing through the object 130 are detected from the cephalometric sensor 13 to conduct photographing.
  • the cephalometric photographing method according to the third preferred embodiment is the same as the cephalometric photographing method illustrated in FIGS. 6 and 7, the cephalometric photographing method illustrated in FIG. 8 and the cephalometric photographing method illustrated in FIG. 9.
  • FIGS. 19 to 21 are views for illustrating a method for photographing using an X-ray photographing apparatus according to a fourth preferred embodiment of the present invention, wherein FIG. 19 is a perspective view of the X-ray photographing apparatus, and FIGS. 20 and 21 are front views of the X-ray photographing apparatus for explaining the panoramic photographing and the CT photographing.
  • the X-ray photographing apparatus 400 includes a base 195, a supporting pole 190, an elevation member 170, a panoramic and CT photographing part 400a, and a cephalometric photographing part 400b, and can conduct CT photographing, panoramic photographing, and cephalometric photographing.
  • the panoramic and CT photographing part 400a is mounted on the front surface of the elevation member 170, and the cephalometric photographing part 400b is connected to a side of the elevation member 170.
  • the panoramic and CT photographing part 400a will be described in detail.
  • the X- ray source part 410 is connected to an end of the rotary arm 440, and the X-ray sensor part 320 is connected to the other end of the rotary arm 440.
  • the X-ray source part driving means 415 is mounted at a part where the rotary arm
  • the X-ray source part driving means 415 moves or tilts the X-ray source part 410 irrespective of the rotary arm 440.
  • the X-ray sensor part driving means 425 is mounted at a location where the rotary arm 440 and the X-ray sensor part 420 are connected with each other, so that the X-ray sensor part 420 can be rotated and moved.
  • the X-ray sensor part 420 includes a first sensor mounting part 422 for mounting a panoramic sensor 421 thereon and a second sensor mounting part 424 for mounting a CT sensor 423 thereon.
  • the first sensor mounting part 422 is disposed at a portion which is near to the X-ray source part 410
  • the second sensor mounting part 424 is disposed at a portion which is away from the X-ray source part 410 in order to regulate the enlargement ratio.
  • a horizontal arm 15 having a cephalometric sensor part 11, a collimator 18 and first heading fixing means 17 is connected to a side of the elevation member 170 by a connection member 16.
  • the cephalometric sensor part 11 has a cephalometric sensor mounting part 12 on which a cephalometric sensor 13 is attached and detached, so that the cephalometric sensor 13 is attached and detached manually.
  • the fourth preferred embodiment of the present invention has the same structure as the X-ray photographing apparatus according to the first preferred embodiment.
  • the patient's head part (object) 130 is located on the chin supporting member 180, and fixed by the second head fixing means 185.
  • the user mounts the panoramic sensor 421 on the first sensor mounting part 422 of the X-ray sensor part 420.
  • the user varies and moves the X-ray source part 410 or the X-ray sensor part 420 using the X-ray source part driving means 415 or the X-ray sensor part driving means 425.
  • the X-ray sensor part driving means 425 rotates the X-ray sensor part 420 on an eccentric axis which is located at a predetermined point between the central point between the panoramic sensor 421 and the CT sensor 423 and the CT sensor 423. That is, when the X-ray sensor part 420 is rotated on the eccentric axis, the distance (b) between the panoramic sensor 421 and the X-ray sensor part 410 which are opposed to each other is shorter than the distance (b', see FIG. 4b) between the CT sensor 423 and the X-ray source part 410 which are opposed to each other. The distance (a, a') between the object 130 and the X-ray source part 410 is the same. Therefore, the enlargement ratio can be previously set to conduct photographing. However, if necessary, the user can horizontally move the X-ray source part 410 using the X-ray source part driving means 415 to obtain the optimum enlargement ratio.
  • the patient's head part (object) 130 is located o the chin supporting member 180, and then, fixed by the second head fixing means 185.
  • the user rotates the X-ray sensor part 420 using the X-ray sensor driving means 425.
  • the X-ray sensor part 420 is rotated to 180? so that the CT sensor 423 gets nearer to the X-ray source part 410 than the panoramic sensor 421. That is, the X-ray sensor part 420 is rotated on the eccentric axis which is located at a predetermined point between the central point between the panoramic sensor 421 and the CT sensor 423 and the CT sensor 423.
  • the X-ray sensor part 420 is rotated on the central axis which is the central point located between the panoramic sensor 421 and the CT sensor 423 in order to locate the CT sensor 423 nearer to the X-ray source part 410 than the panoramic sensor 421.
  • the user horizontally moves the X-ray source part 410 using the X-ray sensor part driving means 425 to obtain the optimum enlargement ratio.
  • the user sets the central axis (x) on a predetermined part of the patient's body, and then, rotates the rotary arm 440 along the circumference of the central axis to conduct the CT photographing.
  • the cephalometric photographing method according to the fourth preferred embodiment is the same as the cephalometric photographing method illustrated in FIGS. 6 and 7, the cephalometric photographing method illustrated in FIG. 8 and the cephalometric photographing method illustrated in FIG. 9. Industrial Applicability
  • the method for photographing using the X-ray photographing apparatus is usable in various fields such as a medical treatment, dental treatment, and so on.
  • the method for photographing using the X-ray photographing apparatus can allow the user to conduct the panoramic photographing and the CT photographing in one apparatus by respectively using exclusive X-ray sensors.
  • the present invention provides the optimum enlargement ratio according to whether the panoramic photographing or the CT photographing is conducted, by regulating the distance between the X-ray source part and the X-ray sensor part, thereby allowing the user to take the image.
  • the present invention can allow the user to simply conduct the cephalometric photographing by separating the panoramic sensor and/or the CT sensor or moving the X-ray sensor part or the X-ray source part.

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Abstract

L'invention concerne une méthode permettant d'effectuer des photographies, à l'aide d'un appareil de photographie à rayons X. Cet appareil de photographie à rayons X comprend une partie de photographie céphalométrique et une partie de photographie panoramique et de tomographie par ordinateur (CT) présentant un élément de support de bras rotatif, un bras rotatif sur lequel une partie de source de rayons X et une partie de détection de rayons X présentant un capteur panoramique et/ou un capteur CT, sont opposées entre elles, ainsi qu'un moyen d'entraînement de bras rotatif. La méthode de l'invention, destinée à effectuer des photographies à l'aide de l'appareil de photographie à rayons X de l'invention, comprend les étapes consistant à: 1) localiser une partie de la tête d'un patient (objet) dans une position photographiée; 2) faire varier et régler une distance comprise entre la partie de source de rayons X et la partie de capteur de rayons X du bras rotatif, selon le type de photographie: panoramique ou CT; et 3) irradier l'objet de rayons X pour le photographier. Ainsi, l'invention permet d'obtenir un rapport d'agrandissement optimal, quel que soit le type de photographie: panoramique ou CT, et permet à l'utilisateur d'effectuer des photographies céphalométriques de manière simple, par séparation du capteur panoramique et/ou du capteur CT, ou par déplacement de la partie de capteur de rayons X ou de la partie de source de rayons X.
PCT/KR2006/001098 2006-01-02 2006-03-24 Methode permettant d'effectuer des photographies a l'aide d'un appareil de photographie a rayons x WO2007078027A1 (fr)

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KR1020060000174A KR20070072730A (ko) 2006-01-02 2006-01-02 엑스선 촬영장치를 이용한 촬영방법
KR10-2006-0000174 2006-01-02

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KR100954211B1 (ko) * 2008-01-15 2010-04-21 (주)바텍이우홀딩스 회전암 틸팅기능이 구비된 ｘ선 촬영장치
KR101143591B1 (ko) * 2009-08-14 2012-05-09 주식회사바텍 촬영횟수계수가 가능한 엑스선촬영장치
KR101143594B1 (ko) * 2009-08-14 2012-05-09 주식회사바텍 엑스선촬영 관리서버시스템
KR101143592B1 (ko) * 2009-08-14 2012-05-09 주식회사바텍 촬영허용관리가 가능한 엑스선 촬영장치

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JPH0819534A (ja) * 1994-07-08 1996-01-23 Morita Mfg Co Ltd パノラマ・セファロ兼用ｘ線撮影装置およびセファロｘ線撮影装置
JP2004208754A (ja) * 2002-12-27 2004-07-29 Asahi Roentgen Kogyo Kk 歯科用ｘ線撮影装置
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Publication number Priority date Publication date Assignee Title
CN102869307A (zh) * 2010-02-23 2013-01-09 普兰梅卡有限公司 用于牙科x光设备的患者托架
EP2547260A1 (fr) * 2010-02-23 2013-01-23 Planmeca Oy Support de patient pour un appareil de radiographie odontologique
EP2547260A4 (fr) * 2010-02-23 2014-06-25 Planmeca Oy Support de patient pour un appareil de radiographie odontologique
CN102869307B (zh) * 2010-02-23 2015-09-23 普兰梅卡有限公司 用于牙科x光设备的患者托架
US9456793B2 (en) 2010-02-23 2016-10-04 Planmeca Oy Patient support for an odontological x-ray apparatus

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