WO2016175386A2 - 엑스선 촬영 장치 및 방법 - Google Patents
엑스선 촬영 장치 및 방법 Download PDFInfo
- Publication number
- WO2016175386A2 WO2016175386A2 PCT/KR2015/007728 KR2015007728W WO2016175386A2 WO 2016175386 A2 WO2016175386 A2 WO 2016175386A2 KR 2015007728 W KR2015007728 W KR 2015007728W WO 2016175386 A2 WO2016175386 A2 WO 2016175386A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ray
- image
- irradiator
- detector
- ray imaging
- Prior art date
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims description 11
- 238000001514 detection method Methods 0.000 description 15
- 238000013170 computed tomography imaging Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 210000001738 temporomandibular joint Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
Images
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
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
-
- 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
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/022—Stereoscopic imaging
-
- 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
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
-
- 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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
-
- 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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/405—Source units specially adapted to modify characteristics of the beam during the data acquisition process
-
- 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
- A61B6/52—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
-
- 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
- A61B6/54—Control of apparatus or devices for radiation diagnosis
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/97—Determining parameters from multiple pictures
-
- 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
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/027—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
-
- 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
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10081—Computed x-ray tomography [CT]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10116—X-ray image
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30036—Dental; Teeth
Definitions
- the present invention relates to an X-ray imaging apparatus and method, and more particularly, to selectively X-rays of some sections of the rotational trajectory of the X-ray irradiator and the X-ray detector that perform X-ray imaging while rotating oppositely with a photographing target therebetween.
- the present invention relates to an X-ray imaging apparatus and method capable of realizing images of various modalities through imaging.
- X-ray imaging apparatuses In the field of dental care, in order to acquire modality X-ray images suitable for diagnosis purposes, such as CT, panoramic, and cephalo images, individual X-ray imaging apparatuses are separately provided or these imaging apparatuses are integrated. X-ray imaging apparatus should be provided.
- An object of the present invention is to provide a method for improving efficiency in implementing various modalities of images.
- the present invention provides an X-ray irradiator and an X-ray detector that rotates opposite to each other between the photographing target; Apparatus for controlling first X-ray imaging at a first dose in some sections of the rotational trajectories of the X-ray irradiator and X-ray detector, and performing second X-ray imaging at a second dose lower than the first dose in the remaining sections.
- Control unit It provides an X-ray imaging apparatus including an image processing unit for receiving the first and second X-ray image data of the first and second X-ray imaging from the X-ray detector to implement an X-ray image.
- the X-ray irradiator may be turned off during the second X-ray imaging.
- the partial section may be in the range of 60 to 300 degrees with respect to the front (0 degree) of the photographing object based on the X-ray irradiator, and the X-ray image may be a archery panoramic image of the photographing object.
- the partial section may be in the range of 300 to 60 degrees and 120 to 240 degrees with respect to the front (0 degrees) of the photographing subject based on the X-ray irradiator, and the X-ray image may be a front cephalo image of the photographing subject. .
- the partial section may be in the range of 30 to 150 degrees and 210 to 330 degrees with respect to the front (0 degree) of the photographing object based on the X-ray irradiator, and the X-ray image may be a lateral cephalo image of the photographing object. .
- the X-ray irradiator may irradiate the X-rays to a portion of the entire light receiving area of the X-ray detector.
- the X-ray irradiator may be configured to adjust the position of the partial region to which the X-ray is irradiated according to the position of the X-ray detector.
- the X-ray detector may have a aspect ratio of 1: 2 or more and 1:10 or less.
- the X-ray detector may be moved in a tangential direction of the rotational trajectory or the rotational trajectory in at least a portion of opposite rotations of the X-ray irradiator and the X-ray detector.
- the center of the rotational trajectory of the X-ray irradiator and the X-ray detector may be moved.
- the modality image may be at least one of an archery panorama image, a cephalo image, a TMJ image, and a sinus image.
- the present invention comprises the steps of placing the X-ray irradiator and the X-ray detector facing each other with a photographing object; Rotating the X-ray irradiator and the X-ray detector based on the axis of rotation between the X-ray radiator and the X-ray detector, taking a first X-ray at a first dose in some sections of the rotation trajectory, and the first in the remaining sections Controlling to take a second X-ray at a second dose lower than the dose; It provides an X-ray imaging method comprising the step of receiving the first and second X-ray image data of the first and second X-ray imaging from the X-ray detector to implement an X-ray image.
- an X-ray imaging apparatus including an X-ray irradiator and an X-ray detector for performing X-ray imaging while rotating oppositely to a photographing object, for example, by using a CT imaging apparatus as well as other CT images
- a CT imaging apparatus as well as other CT images
- modality images it is not necessary to have a separate photographing apparatus or an integrated photographing apparatus for realizing each of the various X-ray modality images, thereby reducing the cost of the X-ray photographing apparatus and simplifying the X-ray photographing apparatus, thereby simplifying installation and space utilization. This can be maximized. Therefore, the efficiency of the X-ray imaging apparatus can be maximized.
- the X-ray dose can be selectively controlled on / off for only a part of the rotational trajectories of the X-ray irradiator and the X-ray detector so that X-ray imaging is performed in a specific direction required to generate a modality image to be implemented. It can be reduced and the image quality of the image can be improved.
- FIG. 1 is a view schematically showing the configuration of an X-ray imaging apparatus according to an embodiment of the present invention.
- FIG. 2 is a view schematically showing an X-ray irradiator and an X-ray detector rotating along a fixed axis of rotation during X-ray imaging according to an embodiment of the present invention.
- FIG. 3 is a view schematically showing the appearance of selective X-ray imaging for implementing the archaeological panoramic image according to an embodiment of the present invention.
- FIG. 4 is a schematic view showing a selective X-ray image for implementing a PA (front) cephalo image according to an embodiment of the present invention.
- FIG. 5 is a view schematically showing the appearance of selective X-ray imaging for implementing a LAT (side) cephalo image according to an embodiment of the invention.
- FIG. 6 is a diagram schematically illustrating a state in which a part of the X-ray detector is used as an X-ray detection area and the position thereof is adjusted during X-ray imaging according to an embodiment of the present invention.
- FIG. 1 is a view schematically showing the configuration of an X-ray imaging apparatus according to an embodiment of the present invention.
- the X-ray imaging apparatus 10 implements various modalities of images including a CT image, and an X-ray irradiator and X which are disposed to face each other with a photographing target therebetween.
- a CT image an X-ray irradiator and X which are disposed to face each other with a photographing target therebetween.
- the device cost for various modality image can be reduced and the device design can be simplified, and the efficiency can be maximized.
- Such an X-ray imaging apparatus 10 may include an X-ray irradiator 100, an X-ray detector 200, and a device control system 300.
- the X-ray irradiator 100 irradiates X-rays, for example, in the form of cone beams, to a photographing target 50 positioned between the X-ray detector 200 and X-rays as in an X-ray tube.
- a collimator 120 positioned in front of the X-ray source 110 and generating a beam direction (ie, beam angle) and beam width of the X-ray.
- a beam direction ie, beam angle
- the X-ray detector 200 receives X-rays passing through the photographing object 50 and generates image data corresponding to the intensity of the received X-rays.
- the X-ray detector 200 includes a plurality of pixels arranged in a matrix in a light receiving area, and each pixel includes a photoelectric conversion element such as a photo diode. Accordingly, X-rays incident on the X-ray detector 200 may be detected as an electrical signal in units of pixels to generate image data.
- the X-ray detector 200 includes a direct conversion type detector in which a photoelectric conversion element directly detects X-rays, or an indirect conversion type detector in which X-rays are converted to visible light through a phosphor and the photoelectric conversion element detects visible light. Can be used.
- the X-ray imaging apparatus 10 since the X-ray imaging apparatus 10 according to the embodiment of the present invention is configured to implement various types of modality images required by a user, including a CT image, the X-ray detector 200 may implement a corresponding modality image. To generate X-ray image data.
- the device control system 300 controls overall operations of the X-ray radiator 100 and the X-ray detector 200 and generates a desired modality image based on the X-ray image data generated by the X-ray detector 200. It may be configured to perform a function.
- the device control system 300 receives the X-ray image data generated by the device control unit 310 and the X-ray detector 200 to control the operation of the X-ray radiator 100 and the X-ray detector 200.
- This may include an image processor 320 to process the generated modality image.
- the device controller 310 and the image processor 320 the following description may be referred to.
- the X-ray irradiator 100 and the X-ray detector 200 are opposed to each other with the photographing target therebetween. It is configured to rotate about the fixed axis of rotation (RX).
- RX fixed axis of rotation
- the relative position of the X-ray detector 200 that is, the relative position with respect to the X-ray irradiator 100 is configured to be substantially fixed. In this case, the position of the fixed rotation axis RX may be adjusted according to the type of the desired modality image.
- the X-ray irradiator 100 and the X-ray detector 200 which are arranged to face each other with the photographing object interposed therebetween are rotated about the rotation axis RX therebetween, so as to be in various directions with respect to the photographing object. It is possible to implement all types of modality images by using an X-ray imaging method for performing X-ray imaging, for example, a CT imaging method, compared to the case of using the corresponding imaging method to implement conventional modality images. The efficiency of image realization can be maximized.
- a general CT imaging X-ray detector 200 may be used regardless of the type of modality image to be implemented. As described above, in the embodiment of the present invention, it is possible to implement all types of modality images using a single detector 200, compared to the case of using the detector separately to implement the modality images. The efficiency of use can also be maximized.
- the X-ray irradiator 100 and the X-ray detector 200 of the rotational trajectory selectively activates X-ray imaging only for the shooting direction necessary for the desired modality image realization, and proceed with the imaging, modality It is preferable that the X-ray photographing is deactivated so as not to proceed with photographing with respect to a direction which is not necessary for image realization.
- the photographing direction required to implement the desired modality image may be a part of rotation trajectories of the X-ray irradiator 100 and the X-ray detector 200.
- FIGS. 3 to 5 are views schematically showing a selective X-ray photographing for implementing the archaeological panoramic image according to an embodiment of the present invention
- Figure 4 is a selective for implementing a PA (front) cephalo image according to an embodiment of the present invention
- FIG. 5 is a diagram schematically illustrating an X-ray imaging state
- FIG. 5 is a diagram schematically showing an X-ray imaging state for implementing a LAT (side) cephalo image according to an embodiment of the present invention.
- the X-ray irradiator 100 and the X-ray detector 200 are rotated with the photographing object interposed therebetween on the basis of the fixed axis of rotation therebetween for X-ray imaging.
- the cone beam type X-ray projection (indicated by a solid line) indicates a state in which X-ray imaging is not performed as the X-ray irradiation is off based on the X-ray irradiator 100.
- the X-ray projection of a cone beam type indicated by a dotted line of FIG. 2 shows a state in which X-ray imaging is performed with X-ray irradiation on.
- X-ray imaging is performed by turning on X-ray irradiation in a specific direction (that is, a specific angle) range in which the X-ray projection passes through the target portion of the image, that is, the arch.
- the associated X-ray image data is detected, and X-ray imaging is not performed by turning off X-ray irradiation for other direction ranges.
- the image processing unit 320 of the device control system 300 may process the X-ray image data detected in the selective section with respect to the arch.
- the section where the X-ray irradiation is selectively turned on to implement the archaeological panoramic image is a 60-300 degree section with respect to the front (0 degree) of the photographing object based on the X-ray irradiator among the rotation trajectories of the X-ray irradiator and the X-ray detector.
- the X-ray irradiator and the X-ray detector may be configured based on the X-ray irradiator with respect to a portion of the rotation trajectory that rotates along the rotation axis between them, for example, in front of the subject (0 degrees).
- X-ray imaging is performed selectively only at ⁇ 300 degrees.
- X-ray projection is turned on for X-ray irradiation in a specific direction range in front and rear through which the X-ray projection passes through the photographing target portion of the image, ie, the two.
- the imaging is performed to detect related X-ray image data, and X-ray imaging is not performed by turning off X-ray irradiation for other direction ranges.
- the front and rear X-ray image data detected for the two can be processed by the image processor 320 to generate a corresponding PA cephalo image.
- the section where X-ray irradiation is selectively turned on to realize the PA cephalo image is 300 to 60 degrees with respect to the front (0 degree) of the photographing object based on the X-ray irradiator among the rotation trajectories of the X-ray irradiator and the X-ray detector.
- X-ray irradiator and X-ray detector are X-ray detectors and X-ray detectors, each part of which is rotated along a rotation axis between them, for example, X in front of the object (0 degrees).
- X-ray imaging is selectively performed only in the 300-60 degrees and 120-240 degrees sections.
- X-ray projection turns on X-ray irradiation for a specific direction range of the left and right sides through which the X-ray projection passes through the photographing target portion of the image, ie, the two.
- X-ray imaging is performed to detect related X-ray image data, and X-ray imaging is not performed by turning off X-ray irradiation for other direction ranges.
- the front and rear X-ray image data detected for the two can be processed by the image processor 320 to generate a corresponding archery panorama image.
- the section where X-ray irradiation is selectively turned on to implement the LAT cephalo image is 30 to 150 degrees with respect to the front (0 degree) of the photographing object based on the X-ray irradiator among the rotation trajectories of the X-ray irradiator and the X-ray detector.
- the X-ray irradiator and the X-ray detector is based on some section of the rotation trajectory rotated along the axis of rotation between them, for example, in front of the object (0 degrees)
- X-ray imaging is selectively performed only in the range of 30 to 150 degrees and 210 to 330 degrees.
- the modality image can be implemented through selective on / off X-ray imaging of some sections of the circular traces of the X-ray irradiator and the X-ray detector according to the characteristics of the desired modality image. .
- the effect of reducing the X-ray dose is generated.
- the X-ray detector 200 when a relatively large CT detector is assumed, a part of the entire light receiving area of the X-ray detector 200 may be used as the X-ray detection area according to the characteristics of the modality image. Can be.
- the X-ray detector used in the general archery panoramic image capturing has a relatively smaller width than that of the CT detector due to the characteristic of the archery panoramic imaging. Therefore, in view of such archaeological panoramic photographing characteristics, the detection area DA is set in the X-ray detector 200 of the embodiment of the present invention, with a part of the entire light-receiving area AA as the X-ray detection area DA.
- X-ray image data of the control unit 300 may be detected and transmitted to the image processing unit 320 of the device control system 300 to generate an associated modality image.
- the X-ray detector 200 rotates along an arc
- the position of the X-ray imaging detection area DA may also be adjusted according to the position of the X-ray detector 200.
- the position of the X-ray detector relative to the X-ray irradiator is relatively determined by the characteristics of the arch path. To change. Accordingly, in view of such archaeological panoramic imaging characteristics, the position of the X-ray detector 200 that rotates along the trajectory of the arc with respect to the fixed rotation axis RX with respect to the X-ray detector 200 of the embodiment of the present invention.
- the position of the CT imaging detection area DA may be adjusted.
- the X-ray irradiator 100 is irradiated for setting the partial X-ray imaging detection area DA and adjusting the detection area DA of the X-ray detector 200 as described above.
- the beam width of the X-rays may be adjusted to correspond to the X-ray imaging detection area DA and the X-ray irradiation angle may correspond to the position of the detection area DA.
- Such adjustment of the beam width and the irradiation angle of the X-ray of the X-ray irradiator 100 may be performed by controlling the collimator 120 of the X-ray irradiator 100, for example.
- the X-ray amount may be reduced. Furthermore, compared to the case where the entire light receiving area AA is used, image data can be acquired in smaller area units, thereby further improving image quality of the implemented modality image.
- the X-ray imaging apparatus has a width corresponding to the X-ray detection area DA of FIG. 6 instead of a large-area CT detector, for example, an aspect ratio of 1: 2 or more 1 It is also possible to use a relatively narrow width X-ray detector of 10 or less.
- the X-ray detector 200 may be a circular trajectory or a circular trajectory, in particular, during the opposite rotation of the X-ray radiator 100 and the X-ray detector 200. By moving in the tangential direction of or by moving the rotation axis RX, the same effect as that of adjusting the position of the imaging detection area DA may be adjusted similarly to FIG. 6.
- an X-ray imaging method for performing X-ray imaging in various directions with respect to the photographing object while rotating oppositely with the photographing object for example, by using a CT imaging method
- a general CT Not only the image but also other types of modality images
- X-ray imaging can be selectively turned on / off so that X-ray imaging is performed in a specific direction required to generate a modality image to be implemented, thereby reducing X-ray dose and improving image quality.
- an X-ray irradiator and an X-ray detector for performing X-ray imaging in various directions with respect to the photographing object facing each other are taken as an example.
- X-rays of the first dose required to implement the modality image are irradiated from the X-ray irradiator, while in other sections, in the above example, in the section where the X-rays are off, a relatively small second from the X-ray irradiator It is also possible to have X-rays of dose irradiated.
- the relatively small second dose of X-rays may be adjusted in the range of more than 0% to less than 50% compared to the X-rays of the first dose, for example.
- the X-ray of the second dose may represent a range of 50% or more and less than 99% of the X-ray of the first dose as another example.
- the CT image for structural analysis rather than the diagnostic purpose of the imaging target may be obtained. Can also be obtained.
- a method of reconstructing various modality images from a general CT image is already well known, but all of them reconstruct X-ray imaging results of various directions of a photographing object to implement a CT image of a photographing object,
- the image is reconstructed using a panorama image, a cephalo image (PA, LAT, and submentovertex (SMV)), a temporomandibular joint (TMJ) image (PA, LAT), and a Sinus image (PA, LAT).
- the amount of calculation is large and at least X-rays of CT imaging or more are irradiated to the imaging target.
- the X-ray imaging result of a specific section required for the modality image is obtained, so that the desired modality image can be realized through the X-ray imaging result without reconstructing the CT image. Can be.
- the X-ray dose irradiated to the subject is relatively small compared to the XT image, and the amount of calculation is reduced.
- the X-ray photographing result of a specific section may be summed with image information of the cross section of each position of the arch path, and the arch palace panorama image may be realized by arranging or overlapping the arch path.
- the cephalo image may be implemented by summating the X-ray photographing result of a specific section with respect to the view direction of the cephalo image.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Optics & Photonics (AREA)
- Biomedical Technology (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Veterinary Medicine (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- General Physics & Mathematics (AREA)
- Pulmonology (AREA)
- Quality & Reliability (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Description
Claims (12)
- 촬영대상을 사이에 두고 대향 회전하는 X선 조사기 및 X선 디텍터;상기 X선 조사기 및 X선 디텍터의 회전궤적 중 일부 구간에서 제 1 선량으로 제 1 X선 촬영을 하고, 나머지 구간에서 상기 제 1 선량보다 낮은 제 2 선량으로 제 2 X선 촬영을 하도록 제어하는 장치제어부;상기 X선 디텍터로부터 제 1 및 제 2 X선 촬영의 제 1 및 제 2 X선 영상 데이터를 전송받아 X선 영상을 구현하는 영상처리부를 포함하는 X선 촬영 장치.
- 제 1 항에 있어서, 상기 제 2 X선 촬영 중 상기 X선 조사기는 오프되는 X선 촬영 장치.
- 제 1 항에 있어서, 상기 일부 구간은 상기 X선 조사기를 기준으로 상기 촬영대상의 전방(0도)에 대해 60~300도 범위이고, 상기 X선 영상은 상기 촬영대상의 악궁 파노라마 영상인 X선 촬영 장치.
- 제 1 항에 있어서, 상기 일부 구간은 상기 X선 조사기를 기준으로 상기 촬영대상의 전방(0도)에 대해 300~60도, 120~240도 범위이고, 상기 X선 영상은 상기 촬영대상의 전방 세팔로 영상인 X선 촬영 장치.
- 제 1 항에 있어서, 상기 일부 구간은 상기 X선 조사기를 기준으로 상기 촬영대상의 전방(0도)에 대해 30~150도, 210~330도 범위이고, 상기 X선 영상은 상기 촬영대상의 측방 세팔로 영상인 X선 촬영 장치.
- 제 1 항에 있어서, 상기 X선 조사기는, 상기 X선 디텍터의 전체 수광영역 중 일부 영역으로 상기 X선을 조사하는 X선 촬영 장치.
- 제 2 항에 있어서, 상기 X선 조사기는, 상기 X선 디텍터의 위치에 따라 상기 X선이 조사되는 일부 영역의 위치를 조절하도록 구성된 X선 촬영 장치.
- 제 1 항에 있어서, 상기 X선 디텍터는, 가로세로의 비율이 1:2 이상 1:10 이하인 X선 촬영 장치.
- 제 8 항에 있어서, 상기 X선 디텍터는, 상기 X선 조사기와 상기 X선 디텍터의 대향 회전 중 적어도 일부에서 상기 회전궤적 또는 상기 회전궤적의 접선 방향으로 이동되는 X선 촬영 장치.
- 제 8 항에 있어서, 상기 X선 조사기와 상기 X선 디텍터의 대향 회전 중 적어도 일부에서 상기 X선 조사기 및 X선 디텍터의 회전궤적 중심이 이동되는 X선 촬영 장치.
- 제 1 항에 있어서, 상기 모달리티 영상은 악궁 파노라마 영상, 세팔로 영상, TMJ 영상, Sinus 영상 중 적어도 하나인 X선 촬영 장치.
- 촬영대상을 사이에 두고 X선 조사기와 X선 디텍터를 대향 배치하는 단계;상기 X선 조사기와 X선 디텍터 사이의 회전축을 기준으로 상기 X선 조사기 및 X선 디텍터의 회전시키되, 회전 궤적 중 일부 구간에서 제 1 선량으로 제 1 X선 촬영을 하고, 나머지 구간에서 상기 제 1 선량보다 낮은 제 2 선량으로 제 2 X선 촬영을 하도록 제어하는 단계;상기 X선 디텍터로부터 제 1 및 제 2 X선 촬영의 제 1 및 제 2 X선 영상 데이터를 전송받아 X선 영상을 구현하는 단계를 포함하는 X선 촬영 방법.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/570,321 US10695008B2 (en) | 2015-04-29 | 2015-07-24 | X-ray imaging device and method |
KR1020177031789A KR20170131696A (ko) | 2015-04-29 | 2015-07-24 | 엑스선 촬영 장치 및 방법 |
KR1020207011347A KR102301942B1 (ko) | 2015-04-29 | 2015-07-24 | 엑스선 촬영 장치 및 방법 |
CN201580080802.0A CN107708567B (zh) | 2015-04-29 | 2015-07-24 | X射线成像装置和方法 |
EP15890827.7A EP3289980A4 (en) | 2015-04-29 | 2015-07-24 | DEVICE AND METHOD FOR X-RAY IMAGING |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2015-0060370 | 2015-04-29 | ||
KR20150060370 | 2015-04-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2016175386A2 true WO2016175386A2 (ko) | 2016-11-03 |
WO2016175386A3 WO2016175386A3 (ko) | 2017-05-18 |
Family
ID=57198591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2015/007728 WO2016175386A2 (ko) | 2015-04-29 | 2015-07-24 | 엑스선 촬영 장치 및 방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10695008B2 (ko) |
EP (1) | EP3289980A4 (ko) |
KR (2) | KR20170131696A (ko) |
CN (1) | CN107708567B (ko) |
WO (1) | WO2016175386A2 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11443423B2 (en) * | 2018-10-30 | 2022-09-13 | Dgnct Llc | System and method for constructing elements of interest (EoI)-focused panoramas of an oral complex |
WO2021033741A1 (ja) * | 2019-08-22 | 2021-02-25 | キヤノンメディカルシステムズ株式会社 | 医用画像処理装置、x線診断装置、および医用画像処理方法 |
CN112183503B (zh) * | 2020-11-27 | 2021-03-02 | 上海优医基医疗影像设备有限公司 | 一种全景头部定位方法、定位系统及其操作方法 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3807833B2 (ja) * | 1996-12-10 | 2006-08-09 | 株式会社モリタ製作所 | X線撮影装置 |
FI119866B (fi) | 1997-09-30 | 2009-04-30 | Morita Mfg | Potilaan luoksepääsyä parantava röntgenlaite |
JP4178332B2 (ja) | 1998-04-13 | 2008-11-12 | 株式会社日立メディコ | X線診断装置 |
JP3864106B2 (ja) | 2002-03-27 | 2006-12-27 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 透過x線データ獲得装置およびx線断層像撮影装置 |
JP3931314B2 (ja) * | 2002-12-27 | 2007-06-13 | 朝日レントゲン工業株式会社 | 歯科用x線撮影装置 |
JP4619704B2 (ja) * | 2004-06-30 | 2011-01-26 | 株式会社東芝 | X線コンピュータ断層撮影装置 |
DE112006000869B4 (de) * | 2005-04-11 | 2017-10-19 | J. Morita Mfg. Corp. | Radiographievorrichtung mit Übersichtsbildfunktion |
WO2006116316A2 (en) * | 2005-04-22 | 2006-11-02 | University Of Chicago | Open source trajectory method and apparatus for interior imaging |
KR100766332B1 (ko) | 2005-08-08 | 2007-10-11 | 주식회사바텍 | 파노라마, 씨티 및 두부계측 겸용 엑스선 촬영장치 |
KR100707796B1 (ko) * | 2005-08-08 | 2007-04-13 | 주식회사바텍 | 파노라마 및 씨티 겸용 엑스선 촬영장치 |
JP4822478B2 (ja) | 2005-09-15 | 2011-11-24 | 株式会社日立メディコ | X線ct装置 |
JP5539729B2 (ja) * | 2007-11-16 | 2014-07-02 | 株式会社モリタ製作所 | X線ct撮影装置 |
FR2924325B1 (fr) * | 2007-12-03 | 2010-11-26 | Trophy | Appareil de radiologie dentaire et procede associe. |
US7715525B2 (en) | 2008-03-13 | 2010-05-11 | Oy Ajat Limited | Single sensor multi-functional dental extra-oral x-ray imaging system and method |
JP5058057B2 (ja) | 2008-04-24 | 2012-10-24 | 浜松ホトニクス株式会社 | 医療用x線撮像システム |
JP5368817B2 (ja) | 2008-04-24 | 2013-12-18 | 浜松ホトニクス株式会社 | 医療用x線撮像システム |
FI123452B (fi) * | 2008-10-03 | 2013-05-15 | Palodex Group Oy | Menetelmä ja sen toteuttava laite röntgenkuvauksen suorittamiseksi |
EP2446822B1 (en) | 2009-06-25 | 2019-05-08 | The Yoshida Dental Mfg. Co., Ltd. | X-ray photographing device |
EP2286728B1 (en) * | 2009-08-19 | 2022-03-16 | J. Morita Manufacturing Corporation | Medical x-ray apparatus |
US9668705B2 (en) | 2010-07-13 | 2017-06-06 | Takara Telesystems Corp. | X-ray tomogram imaging device |
US9326738B2 (en) * | 2011-06-30 | 2016-05-03 | General Electric Company | Method and system for reduced dose X-ray imaging |
ITMI20120099A1 (it) | 2012-01-27 | 2013-07-28 | Gotzen S R L De | Apparato e metodo per radiografia digitale |
CN102551772B (zh) | 2012-03-16 | 2014-03-05 | 中国科学院深圳先进技术研究院 | 射线成像装置 |
KR101412575B1 (ko) * | 2012-07-02 | 2014-06-27 | 충남대학교산학협력단 | 저선량 엑스선 콘빔 시티 촬영장치 |
DE102012219269A1 (de) | 2012-10-22 | 2014-05-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und Vorrichtung zum Erzeugen einer dreidimensionalen Abbildung eines Objekts |
US8798230B2 (en) | 2012-11-19 | 2014-08-05 | Samsung Electronics Co., Ltd. | Radiation imaging apparatus, computed tomography apparatus, and radiation imaging method |
-
2015
- 2015-07-24 EP EP15890827.7A patent/EP3289980A4/en not_active Withdrawn
- 2015-07-24 US US15/570,321 patent/US10695008B2/en active Active
- 2015-07-24 KR KR1020177031789A patent/KR20170131696A/ko active Search and Examination
- 2015-07-24 CN CN201580080802.0A patent/CN107708567B/zh active Active
- 2015-07-24 KR KR1020207011347A patent/KR102301942B1/ko active IP Right Grant
- 2015-07-24 WO PCT/KR2015/007728 patent/WO2016175386A2/ko active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US10695008B2 (en) | 2020-06-30 |
CN107708567B (zh) | 2021-11-05 |
US20180125434A1 (en) | 2018-05-10 |
KR20200047732A (ko) | 2020-05-07 |
EP3289980A4 (en) | 2019-01-16 |
CN107708567A (zh) | 2018-02-16 |
EP3289980A2 (en) | 2018-03-07 |
KR20170131696A (ko) | 2017-11-29 |
KR102301942B1 (ko) | 2021-09-16 |
WO2016175386A3 (ko) | 2017-05-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7071410B2 (ja) | スキャナー機能が追加されたx-線断層撮影装置 | |
WO2015069039A1 (ko) | 다수의 엑스선원들을 구비하는 엑스선 영상 촬영 장치 | |
WO2017073997A1 (ko) | 엑스선 영상 촬영장치 | |
US20140046212A1 (en) | Patient positioning and imaging system | |
WO2018105963A1 (ko) | 방사선 촬영 장치 및 이를 이용한 방사선 촬영 방법 | |
WO2009154340A1 (ko) | 일체형 pet/ct시스템 | |
WO2016175386A2 (ko) | 엑스선 촬영 장치 및 방법 | |
WO2015026163A1 (ko) | 엑스선 영상 장치 | |
WO2015111979A1 (ko) | 씨티 촬영 장치 | |
WO2011087306A2 (ko) | X선 단층 촬영 장치 및 그 방법 | |
WO2012153990A2 (ko) | 엑스선 촬영장치 | |
WO2016043562A1 (ko) | X선 영상 형성 장치 및 방법 | |
WO2016064257A1 (ko) | 구강 내 엑스선 촬영용 엑스선 발생장치, 가이드홀더 및 이를 포함하는 구강 내 엑스선 촬영 시스템 | |
WO2018174389A1 (ko) | 방사선 촬영 장치 및 이를 이용한 방사선 촬영 방법 | |
JP2012030117A (ja) | X線ct装置 | |
WO2013137523A1 (ko) | X선 촬영장치 | |
WO2017073996A1 (ko) | 엑스선 ct 촬영장치 및 그 촬영방법 | |
WO2014054899A1 (ko) | 엑스선 촬영장치 | |
WO2016111432A1 (ko) | 영상 촬영 방법 및 장치 | |
JP3977624B2 (ja) | X線コンピュータ断層撮影装置 | |
WO2017003223A1 (ko) | 영상 획득 장치 및 방법 | |
CN108211135B (zh) | 一种放疗多光谱成像装置 | |
WO2016064072A1 (ko) | X선 촬영장치 | |
WO2009091198A2 (ko) | 프레임방식의 영상획득장치 및 영상획득방법 | |
WO2022270667A1 (ko) | 엑스선 촬영 장치 및 엑스선 영상 처리 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15890827 Country of ref document: EP Kind code of ref document: A2 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15570321 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20177031789 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2015890827 Country of ref document: EP |