WO2011149146A1 - Multilayer film mirror alignment device for a monochromatic x-ray tube, and a method for acquiring an x-ray image using the same - Google Patents

Multilayer film mirror alignment device for a monochromatic x-ray tube, and a method for acquiring an x-ray image using the same Download PDF

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Publication number
WO2011149146A1
WO2011149146A1 PCT/KR2010/005024 KR2010005024W WO2011149146A1 WO 2011149146 A1 WO2011149146 A1 WO 2011149146A1 KR 2010005024 W KR2010005024 W KR 2010005024W WO 2011149146 A1 WO2011149146 A1 WO 2011149146A1
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Prior art keywords
thin film
film mirror
monochromatic
multilayer thin
ray generator
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PCT/KR2010/005024
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French (fr)
Korean (ko)
Inventor
김경우
김재희
권영만
유철우
Original Assignee
주식회사 나노포커스레이
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Priority claimed from KR1020100048423A external-priority patent/KR101095955B1/en
Application filed by 주식회사 나노포커스레이 filed Critical 주식회사 나노포커스레이
Priority to US13/637,391 priority Critical patent/US20130022171A1/en
Publication of WO2011149146A1 publication Critical patent/WO2011149146A1/en

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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/06—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction or reflection, e.g. monochromators
    • G21K1/062—Devices having a multilayer structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K2201/00—Arrangements for handling radiation or particles
    • G21K2201/06—Arrangements for handling radiation or particles using diffractive, refractive or reflecting elements
    • G21K2201/061—Arrangements for handling radiation or particles using diffractive, refractive or reflecting elements characterised by a multilayer structure

Definitions

  • the present invention relates to a multilayer thin film mirror aligning device for a monochromatic X-ray generator and an X-ray image acquisition method using the same, and more particularly, to provide an alignment device including a base jig, an elastic support part and an angle of incidence adjusting part to position the multilayer thin film mirror.
  • an alignment device including a base jig, an elastic support part and an angle of incidence adjusting part to position the multilayer thin film mirror.
  • a conventional X-ray imaging apparatus obtains an X-ray image by using all the X-ray energy from the X-ray generator or selecting some energy by using a filter of a specific material.
  • the X-ray image acquisition method has disadvantages of poor image quality and high radiation exposure.
  • monochromatic X-rays can increase the contrast of an X-ray image to improve image quality and significantly reduce the radiation exposure.
  • the conventional technique for aligning a plurality of multilayer thin film mirrors for the implementation of a monochromatic X-ray generator has to be controlled in a very small range (for example, around 1 °) of X-ray incidence, and thus fine adjustment of each multilayer thin film mirror. This is necessary, and there is a difficulty in controlling the position and angle of the mirror so that the energy reflected from each multilayer thin-film mirror in the detector unit obtains the same monochromatic energy.
  • the housing for aligning the multilayer thin-film mirror is of a type that fits into a mechanism in which a groove that can be accurately mirrored is manufactured, the thickness of the multilayer thin-film mirror itself as well as the processing error and assembly error of the mechanical body are different. There was a limit in obtaining monochromatic X-ray energy of a desired band because it was sensitive to the incident angle determination of X-rays due to an error.
  • an alignment device including a base jig, an elastic support and an incident angle control unit to finely adjust the position of the multilayer thin film mirror
  • the user can freely specify the desired Since only the energy of the energy band can be determined selectively, an optimal monochromatic X-ray image corresponding to the material to be measured can be obtained. Also, by using the characteristics of the monochromatic X-ray, the contrast of the image is increased to improve the image quality.
  • the purpose of the present invention is to provide a multilayer thin film mirror aligning device for monochromatic X-ray generators and an X-ray image acquisition method using the same, which can reduce the radiation exposure of a patient, as well as obtain X-ray images of the human body. .
  • the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator of the present invention uses an X-ray generator for generating X-rays to irradiate the subject and monochromatic X-rays emitted through the plurality of multilayer thin-film mirrors.
  • a multi-layer thin-film mirror aligning apparatus for a generator comprising: a base jig for allowing the multi-layer thin-film mirror to be placed upright; An elastic support for elastically supporting one surface of the multilayer thin film mirror standing upright on the base jig; And an incident angle adjusting unit configured to adjust an incident angle of X-rays by pushing a rear surface of the multilayer thin film mirror having one surface elastically supported by the elastic support unit.
  • the base jig is arranged in a direction orthogonal to a reference line connecting the center of the X-ray generating unit and the detector unit, respectively, the height of the multilayer thin film mirror
  • a plurality of horizontal frames having a plurality of mounting pins spaced apart from each other by a predetermined interval so as to be spaced up and down and spaced forward and backward by a front and rear length, and the front and rear ends of the multilayer thin film mirror are respectively inserted in the center thereof;
  • a plurality of vertical frames fixed to the main housing by connecting both ends of the plurality of horizontal frames.
  • the spacing interval of the mounting pin is formed wider than the thickness of the multilayer thin film mirror, so that the multilayer thin film mirror is turned left and right between the mounting pins. It is preferable that fine adjustment is made possible.
  • the multi-layer thin-film mirror aligning device for the monochromatic X-ray generator wherein the elastic support, a screw threaded through the main housing is fixed to one end of the base jig; A moving plate connected to one end of the rod and moved left and right integrally with the rod; It is preferably configured to include a plurality of elastic support pins connected to one end of the movable plate to elastically support one surface of the multilayer thin film mirror.
  • the plurality of multilayer thin film mirrors have a structure in which the front and rear ends thereof become shorter in the direction of the elastic support, and the plurality of elastic support pins corresponding thereto. It is preferable that the length becomes shorter toward the center of the multilayer thin film mirror so as to be in close contact with one side of the multilayer thin film mirror at the same time.
  • the elastic support pin is provided with a projecting part whose front end is elastically supported by a spring and is projected back and forth.
  • the incident angle control unit the guide rail is connected to the main housing and disposed outside the base jig;
  • a slider having a plurality of adjustment pins coupled to the guide rails and sliding in a multilayer thin film mirror direction to adjust the incident angle by pushing the multilayer thin film mirror in an elastic support direction;
  • a fine adjustment knob disposed outside the guide rail opposite the elastic support and connected to the slider to finely slide the slider.
  • a spring for elastically supporting one end of the slider is disposed on the guide rail on the elastic support side.
  • the elastic support pins of the elastic support are disposed in four places so as to support four corners of the upper, lower, front and lower ends of the multilayer thin film mirror, respectively.
  • the adjustment pin of the incident angle control unit is also characterized in that the structure is arranged in each of four places so as to press the opposite four corners.
  • the X-ray image acquisition method using the multilayer thin film mirror aligning device for the monochromatic X-ray generator of the present invention uses a pair of multilayer thin film mirrors to obtain the dual energy using the alignment device. Symmetrical arrangement based on the connected baseline, one acquires monochromatic energy in the low energy region, and the other acquires monochromatic energy in the high energy region. It is characterized by selectively taking.
  • the X-ray image acquisition method using the multilayer thin film mirror aligning device for the monochromatic X-ray generator of the present invention is that the same monochromatic X-rays coming out through multiple multilayer thin film mirrors are aligned with the thickness of the multilayer thin film mirror using the aligning device. Due to the spacing between the multilayer thin film mirrors, it is possible to finely align the multilayer thin film mirror to a position where the area without X-rays generated between the monochromatic X-rays is minimized.
  • the X-ray image acquisition method using the multilayer thin film mirror alignment device for the monochromatic X-ray generator of the present invention uses the alignment device, but the X-ray generation unit and the detector unit are arranged on the same base so that each component is constant along the X-ray generation unit.
  • the image may be acquired by scanning a subject while rotating along an arc having a radius.
  • the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator of the present invention and the X-ray image acquisition method using the same are provided with an alignment device including a base jig, an elastic support and an angle of incidence adjusting part to finely position the multilayer thin film mirror.
  • an alignment device including a base jig, an elastic support and an angle of incidence adjusting part to finely position the multilayer thin film mirror.
  • FIG. 1 is a schematic perspective view showing a monochromatic X-ray generator according to an embodiment of the present invention.
  • FIGS. 2 and 3 are perspective views showing a multilayer thin film mirror aligning apparatus for a monochromatic X-ray generator according to an embodiment of the present invention.
  • FIG. 4 is a front view showing a multilayer thin film mirror aligning apparatus for a monochromatic X-ray generator according to an exemplary embodiment of the present invention.
  • FIG. 5 is a perspective view showing a bear jig of the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to an embodiment of the present invention.
  • FIG. 6 is a partial perspective view illustrating an incident angle control unit of a multilayer thin film mirror alignment device for a monochromatic X-ray generator according to an exemplary embodiment of the present invention.
  • FIG. 7 is a perspective view showing an elastic support of the multilayer thin film mirror alignment device for the monochromatic X-ray generator according to the embodiment of the present invention.
  • FIGS. 8 to 10 are schematic views illustrating an X-ray image acquisition method using a multilayer thin film mirror alignment device for a monochromatic X-ray generator according to an embodiment of the present invention.
  • the apparatus for aligning a multilayer thin film mirror for a monochromatic X-ray generator includes an X-ray generator 4 for generating X-rays and irradiating the subject 2 with a plurality of X-ray generators.
  • the alignment device comprises a base jig 10 which allows the multilayer thin film mirror 5 to be placed upright.
  • One surface is elastically supported by an elastic support portion 20 and an elastic support portion 20 for elastically supporting one surface of the multilayer thin film mirror 5 standing upright on the base jig 10. It is configured to include an angle of incidence control unit 30 to adjust the angle of incidence of the X-ray by pushing the back of the multilayer thin film mirror (5).
  • the base jig 10 is disposed in a direction orthogonal to a reference line connecting the centers of the X-ray generating unit 4 and the detector unit 6, respectively, spaced vertically and spaced apart by the height of the multilayer thin film mirror 5.
  • a plurality of horizontal frames 11 and a plurality of horizontal frames having a plurality of mounting pins 11a spaced apart at regular intervals so as to be spaced apart from the front and rear by the length, and the front and rear ends of the multilayer thin film mirror 5 are respectively inserted in the center. It comprises a plurality of vertical frame 12 is fixed to the main housing 15 by connecting both ends of the frame (11).
  • the spacing of the mounting pins 11a is wider than the thickness of the multilayer thin film mirror 5, so that the multilayer thin film mirror 5 is twisted from side to side between the mounting pins 11a to finely adjust the incident angle. It is supposed to be.
  • the base jig 10 is paired up and down at the front and rear, respectively, and is detachable and attachable to a position where the multilayer thin film mirror 5 is to be aligned, and when the alignment is completed, each multilayer thin film mirror is completed. (5) It would be desirable to adhere and fix the base jig 10 with a suitable epoxy.
  • the elastic support part 20 is connected to the rod 21 through which the main housing 15 is fixedly connected to one end of the base jig 10 and penetrated therethrough, and the one end of the rod 21 penetrated therethrough.
  • a plurality of movable plates 22 which are integrally moved with the rod 21 and left and right, and connected to one end of the movable plate 22 to elastically support one surface of the multilayer thin-film mirror 5. It is configured to include an elastic support pin (23).
  • the plurality of multilayer thin film mirrors 5 have a structure in which the front and rear ends thereof become shorter in the direction of the elastic support part 20, and the plurality of elastic support pins 20 corresponding to the multilayer thin film mirrors 5 The length becomes shorter toward the center of the multi-layer thin film mirror so as to be in close contact with one side of them simultaneously.
  • the elastic support pin 23 is provided with a projecting portion 23b whose front end portion is elastically supported by the spring 23a to be projected back and forth.
  • the elastic support pins 23 serve to elastically press each multilayer thin film mirror 5 with a tension of several tens to hundreds of gf so that they are aligned at positions having an incident angle for obtaining a desired monochromatic X-ray.
  • the incidence angle adjusting part 30 is connected to the main housing 15 and is disposed on the outside of the base jig 10, and a guide rail 31 coupled to the guide rail 31 and the multilayer thin film mirror 5.
  • Slider 32 having a plurality of adjustment pins (32a) to slide the multi-layer thin film mirror (5) in the direction of the elastic support 20 to adjust the angle of incidence and the guide rail opposite the elastic support 20 (31) It is configured to include a fine adjustment knob 33 disposed on the outside and connected to the slider 32 to finely slide the slider 32.
  • the spring 34 for elastically supporting one end of the slider 32 is disposed on the guide rail 31 on the elastic support 20 side.
  • the elastic support pin 23 of the elastic support 20 is disposed in each of four places so as to support the four corners of the upper and lower front and lower ends of the multilayer thin film mirror 5, the corresponding angle of incidence control unit 30
  • the control pins 32a are also arranged in four positions so as to press four opposite corners thereof.
  • the incidence angle adjusting unit 30 uses a manual micrometer or a motor-driven actuator using the fine adjustment knob 33 to slide the slider 32 to finely adjust each multilayer thin film mirror 5. would be desirable.
  • control pin 32a is made of a material of high strength and has a thickness of 1 mm or less so as to move between the multilayer thin film mirrors 5, and each step to match the alignment position between the multilayer thin film mirrors 5. It is structured.
  • the present invention according to this configuration is arranged to be placed on the mounting pin (11a) of the base jig 10 to the approximate position to target the multi-layered thin film mirror (5), the elastic support pin 23 Push the multi-layer thin film mirror (5) to the opposite side to be elastically supported in the state to push the multi-layer thin film mirror (5) through the control pins (32a) of the opposite side again to finely adjust the position to target each multi-layer thin film mirror (5) By aligning with, the incidence angle at which the target monochromatic X-ray can be obtained can be given to each multilayer thin film mirror 5.
  • a reference line connecting a pair of multilayer thin film mirrors 5 to the center of the X-ray generator 4 and the center of the detector unit 6 is used.
  • the expected spatial resolution for the case where the thickness of the subject 2 is 10 mm or less may be approximately 30 ⁇ m.
  • the X-ray generator 4 and the detector unit 6 are disposed on the same base 40 so that each component part along the X-ray generator 4 has a predetermined radius along a circular arc.
  • the image may be acquired by scanning the subject 2 while rotating.
  • the present invention provides an alignment device including a base jig, an elastic support and an incident angle adjusting unit to finely adjust the position of the multilayer thin film mirror, thereby basically selecting only energy of a specific energy band desired by the user freely.
  • an optimal monochromatic X-ray image corresponding to the material to be measured can be obtained, and a high quality X-ray image can be obtained by increasing contrast of the image through the characteristics of the monochromatic X-ray.
  • you want to use for human diagnostics will be able to significantly reduce the radiation exposure of the patient.

Abstract

The present invention relates to a multilayer film mirror alignment device for a monochromatic X-ray tube, and a method for acquiring an X-ray image using the same. The alignment device comprises: a base jig (10) for arranging multilayer film mirrors (5) in an upright manner, the base jig including a collimator (8) placed between an X-ray generating unit (4) and a detector (6) to align the X-ray generator and the detector and limit the radiation direction of the X-ray to provide an optimum incident angle to each of the multilayer film mirrors (5); an elastic support (20) for elastically supporting one side of each of the multilayer film mirror (5) standing upright on the base jig (10); and an incident angle adjustment unit (30) for adjusting an incident angle of X-ray by pushing the rear side of the multilayer film mirrors (5), being elastically supported by the elastic support (20) at one side, respectively. Therefore, in principle, a user can freely and selectively choose only the energy of a particular desired energy band, and obtain an optimum monochromatic X-ray image corresponding to a material to be measured.

Description

모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 및 이를 이용한 엑스선 영상획득방법Multi-layer thin-film mirror aligning device for monochromatic X-ray generator and X-ray image acquisition method using same
본 발명은 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 및 이를 이용한 엑스선 영상획득방법에 관한 것으로서, 보다 상세하게는 베이스지그, 탄성지지부 및 입사각조절부를 포함하는 정렬장치를 마련하여 다층박막거울의 위치를 미세하게 조절할 수 있도록 함으로써, 사용자가 자유자재로 원하는 특정 에너지 대역의 에너지만을 선별적으로 결정할 수 있기 때문에 측정하고자 하는 물질에 상응하는 최적의 모노크로매틱의 엑스선 영상을 얻을 수 있고, 또한, 모노크로매틱 엑스선의 특징을 이용하여 영상의 명암도(Contrast)를 높여 고화질의 엑스선 영상을 얻을 수 있을 뿐 아니라 인체 진단용으로 사용하고자 할 경우 환자의 방사선 피폭을 크게 줄일 수 있게 되는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 및 이를 이용한 엑스선 영상획득방법에 관한 것이다.The present invention relates to a multilayer thin film mirror aligning device for a monochromatic X-ray generator and an X-ray image acquisition method using the same, and more particularly, to provide an alignment device including a base jig, an elastic support part and an angle of incidence adjusting part to position the multilayer thin film mirror. By allowing fine adjustment, the user can freely determine only the energy of a specific energy band desired, so that an optimal monochromatic X-ray image corresponding to the material to be measured can be obtained, and also monochromatic X-rays Multi-layer thin-film mirror aligning device for monochromatic X-ray generator that can increase the contrast of the image to obtain high-quality X-ray image and greatly reduce the radiation exposure of the patient when using it for human diagnosis. And X-rays using the same It relates to an image acquisition method.
일반적으로 종래의 엑스선 영상 장치는 엑스선 발생부에서 나오는 모든 엑스선 에너지를 사용하거나 특정 물질의 필터를 사용하여 일부 에너지를 선별하여 엑스선 영상을 획득하고 있다. In general, a conventional X-ray imaging apparatus obtains an X-ray image by using all the X-ray energy from the X-ray generator or selecting some energy by using a filter of a specific material.
이러한 엑스선 영상획득 방식은 영상의 질이 떨어지고 방사선 피폭량이 많다는 단점을 가지고 있다. The X-ray image acquisition method has disadvantages of poor image quality and high radiation exposure.
특히, 인체 진단용 엑스선 영상 장치의 경우 방사선 피폭량을 줄이는 것은 매우 중대한 사안이다. 따라서 이를 해결하기 위해 모노크로매틱 엑스선을 이용한 엑스선 영상 장치의 개발이 시도되고 있다. In particular, in the case of human diagnostic X-ray imaging apparatus, it is very important to reduce the radiation exposure. Therefore, in order to solve this problem, development of an X-ray imaging apparatus using monochromatic X-rays has been attempted.
모노크로매틱 엑스선을 이용하면 엑스선 영상의 명암도를 높여 영상의 질을 높일 수 있고, 방사선 피폭량을 현저하게 줄일 수 있다. 모노크로매틱 엑스선 발생장치의 개발을 구현하기 위해서는 핵심 광학소자인 다층박막거울의 제작과 함께 실제 시스템에 맞는 특정 밴드의 모노크로매틱 엑스선 에너지를 얻기 위한 복수개의 다층박막거울의 정렬 장치가 필요하다.Using monochromatic X-rays can increase the contrast of an X-ray image to improve image quality and significantly reduce the radiation exposure. In order to realize the development of the monochromatic X-ray generator, it is necessary to manufacture a multilayer thin film mirror, which is a core optical element, and to align a plurality of multilayer thin film mirrors to obtain monochromatic X-ray energy of a specific band suitable for a real system.
상기와 같이 모노크로매틱 엑스선 발생장치의 구현을 위한 종래의 복수개의 다층박막거울을 정렬시키는 기술은 엑스선의 입사각이 매우 작은 범위(예컨대, 1°내외)에서 제어되어야 하므로 각각의 다층박막거울의 미세한 조절이 필요하고, 디텍터부에서 각각의 다층박막거울에서 반사되어 나오는 에너지가 동일한 모노크로매틱의 에너지를 얻도록 하기 위한 거울의 위치와 각도의 제어에 어려움이 있었다. As described above, the conventional technique for aligning a plurality of multilayer thin film mirrors for the implementation of a monochromatic X-ray generator has to be controlled in a very small range (for example, around 1 °) of X-ray incidence, and thus fine adjustment of each multilayer thin film mirror. This is necessary, and there is a difficulty in controlling the position and angle of the mirror so that the energy reflected from each multilayer thin-film mirror in the detector unit obtains the same monochromatic energy.
또한, 다층박막거울을 정렬하는 하우징은 정밀하게 거울을 끼울 수 있는 홈이 제작된 기구물에 끼워 맞춤 형식으로 되어 있기 때문에, 기구물의 가공 오차와 조립 오차뿐만 아니라 다층박막거울 자체가 가지고 있는 서로 상이한 두께 오차에 의해 엑스선의 입사각 결정에 민감하게 작용하여 원하는 밴드의 모노크로매틱 엑스선 에너지를 획득하는데 한계가 있었다. In addition, since the housing for aligning the multilayer thin-film mirror is of a type that fits into a mechanism in which a groove that can be accurately mirrored is manufactured, the thickness of the multilayer thin-film mirror itself as well as the processing error and assembly error of the mechanical body are different. There was a limit in obtaining monochromatic X-ray energy of a desired band because it was sensitive to the incident angle determination of X-rays due to an error.
또한, 다층박막거울의 두께와 배치된 거울 간의 간격으로 인해 발생된 각각의 모노크로매틱 엑스선 간에는 엑스선이 없는 영역이 존재하게 되는 등의 문제점이 있었다. In addition, there is a problem such that an area free of X-rays exists between the monochromatic X-rays generated due to the thickness of the multilayer thin film mirror and the spacing between the mirrors.
이에 본 발명에서는 상기와 같은 문제점들을 해결하기 위한 것으로서, 베이스지그, 탄성지지부 및 입사각조절부를 포함하는 정렬장치를 마련하여 다층박막거울의 위치를 미세하게 조절할 수 있도록 함으로써, 사용자가 자유자재로 원하는 특정 에너지 대역의 에너지만을 선별적으로 결정할 수 있기 때문에 측정하고자 하는 물질에 상응하는 최적의 모노크로매틱의 엑스선 영상을 얻을 수 있고, 또한, 모노크로매틱 엑스선의 특징을 이용하여 영상의 명암도(Contrast)를 높여 고화질의 엑스선 영상을 얻을 수 있을 뿐 아니라 인체 진단용으로 사용하고자 할 경우 환자의 방사선 피폭을 크게 줄일 수 있게 되는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 및 이를 이용한 엑스선 영상획득방법을 제공하는데 그 목적이 있다.In the present invention to solve the above problems, by providing an alignment device including a base jig, an elastic support and an incident angle control unit to finely adjust the position of the multilayer thin film mirror, the user can freely specify the desired Since only the energy of the energy band can be determined selectively, an optimal monochromatic X-ray image corresponding to the material to be measured can be obtained. Also, by using the characteristics of the monochromatic X-ray, the contrast of the image is increased to improve the image quality. The purpose of the present invention is to provide a multilayer thin film mirror aligning device for monochromatic X-ray generators and an X-ray image acquisition method using the same, which can reduce the radiation exposure of a patient, as well as obtain X-ray images of the human body. .
이와 같은 목적을 달성하기 위한 본 발명의 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치는 엑스선을 발생시켜 피사체에 조사하는 엑스선발생부와, 복수의 다층박막거울을 통해 나오는 모노크로매틱 엑스선을 이용하여 피사체의 영상을 획득하는 디텍터부 사이에 배치되되, 상기 엑스선으로부터 모노크로매틱 엑스선을 생성시키는 다층박막거울에 필요한 입사각을 부여하기 위해 이들을 정렬시키며 상기 엑스선의 조사방향을 제한하는 콜리메이터부를 포함하여 구성되는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 정렬장치는, 상기 다층박막거울이 직립 배치되도록 하는 베이스지그; 상기 베이스지그에 직립되어 있는 다층박막거울의 일면을 탄성 지지하기 위한 탄성지지부; 및 상기 탄성지지부에 의해 일면이 탄성 지지되어 있는 다층박막거울의 배면을 밀어 엑스선의 입사각을 조절할 수 있도록 하는 입사각조절부를 포함하여 구성된 것을 특징으로 한다.In order to achieve the above object, the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator of the present invention uses an X-ray generator for generating X-rays to irradiate the subject and monochromatic X-rays emitted through the plurality of multilayer thin-film mirrors. Monochromatic X-rays disposed between detectors for acquiring an image, including collimator parts for aligning them to give a necessary angle of incidence to a multilayer thin-film mirror that generates monochromatic X-rays from the X-rays, and limiting an irradiation direction of the X-rays. A multi-layer thin-film mirror aligning apparatus for a generator, said aligning apparatus comprising: a base jig for allowing the multi-layer thin-film mirror to be placed upright; An elastic support for elastically supporting one surface of the multilayer thin film mirror standing upright on the base jig; And an incident angle adjusting unit configured to adjust an incident angle of X-rays by pushing a rear surface of the multilayer thin film mirror having one surface elastically supported by the elastic support unit.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 베이스지그는, 상기 엑스선발생부와 디텍터부의 중심을 잇는 기준선에 대해 직교되는 방향으로 배치되되, 각각 다층박막거울의 높이만큼 상하로 이격되고 전후 길이만큼 전후로 이격되며, 그 중앙에 다층박막거울의 상하단 전후부가 각각 삽입되어 기본 장착되도록 일정간격 이격된 복수의 장착핀을 갖는 복수의 수평틀; 및 상기 복수의 수평틀의 양단부를 연결하여 메인하우징에 고정되는 복수의 수직틀을 포함하여 구성된 것이 바람직하다.In addition, in the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to the present invention, the base jig is arranged in a direction orthogonal to a reference line connecting the center of the X-ray generating unit and the detector unit, respectively, the height of the multilayer thin film mirror A plurality of horizontal frames having a plurality of mounting pins spaced apart from each other by a predetermined interval so as to be spaced up and down and spaced forward and backward by a front and rear length, and the front and rear ends of the multilayer thin film mirror are respectively inserted in the center thereof; And a plurality of vertical frames fixed to the main housing by connecting both ends of the plurality of horizontal frames.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 장착핀의 이격 간격은 다층박막거울의 두께보다 넓게 형성되어 이 장착핀들 사이에서 다층박막거울이 좌우로 틀어지면서 입사각의 미세 조절이 가능하도록 된 것이 바람직하다. In addition, in the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to the present invention, the spacing interval of the mounting pin is formed wider than the thickness of the multilayer thin film mirror, so that the multilayer thin film mirror is turned left and right between the mounting pins. It is preferable that fine adjustment is made possible.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 탄성지지부는, 상기 베이스지그 일단부에 연결 고정되어 있는 메인하우징과 나사 결합되어 관통되는 로드; 상기 로드의 관통된 일단부와 연결되어 이 로드와 일체로 좌우 이동되는 이동판; 상기 이동판의 일단부에 연결되어 상기 해당 다층박막거울의 일면과 맞닿아 탄성 지지하기 위한 복수의 탄성지지핀을 포함하여 구성된 것이 바람직하다.In addition, the multi-layer thin-film mirror aligning device for the monochromatic X-ray generator according to the present invention, wherein the elastic support, a screw threaded through the main housing is fixed to one end of the base jig; A moving plate connected to one end of the rod and moved left and right integrally with the rod; It is preferably configured to include a plurality of elastic support pins connected to one end of the movable plate to elastically support one surface of the multilayer thin film mirror.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 복수의 다층박막거울은 탄성지지부 방향으로 갈수록 그 전후단 길이가 짧아지는 구조로 되고, 이에 대응되는 복수의 탄성지지핀은 상기 해당 다층박막거울들의 일측면에 동시 밀착되도록 다층박막거울 중심으로 갈수록 길이가 짧아지는 구조로 된 것이 바람직하다.In addition, in the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to the present invention, the plurality of multilayer thin film mirrors have a structure in which the front and rear ends thereof become shorter in the direction of the elastic support, and the plurality of elastic support pins corresponding thereto. It is preferable that the length becomes shorter toward the center of the multilayer thin film mirror so as to be in close contact with one side of the multilayer thin film mirror at the same time.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 탄성지지핀은 그 선단부가 스프링에 의해 탄성 지지되어 전후로 출몰되는 출몰부가 마련된 것이 바람직하다.In addition, in the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to the present invention, it is preferable that the elastic support pin is provided with a projecting part whose front end is elastically supported by a spring and is projected back and forth.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 입사각조절부는, 상기 메인하우징과 연결되고 베이스지그의 외측에 배치되는 가이드레일; 상기 가이드레일에 결합되어 다층박막거울 방향으로 슬라이딩되며 이 다층박막거울을 탄성지지부 방향으로 밀어서 입사각을 조절할 수 있도록 하는 복수의 조절핀을 갖는 슬라이더; 및 상기 탄성지지부 맞은편의 가이드레일 외측에 배치되고 슬라이더와 연결되어 이 슬라이더를 미세하게 슬라이딩시키는 미세조절노브를 포함하여 구성된 것이 바람직하다.In addition, in the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to the present invention, the incident angle control unit, the guide rail is connected to the main housing and disposed outside the base jig; A slider having a plurality of adjustment pins coupled to the guide rails and sliding in a multilayer thin film mirror direction to adjust the incident angle by pushing the multilayer thin film mirror in an elastic support direction; And a fine adjustment knob disposed outside the guide rail opposite the elastic support and connected to the slider to finely slide the slider.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 탄성지지부 측의 가이드레일에 슬라이더의 일단부를 탄성 지지하기 위한 스프링이 배치된 것이 바람직하다.In the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to the present invention, it is preferable that a spring for elastically supporting one end of the slider is disposed on the guide rail on the elastic support side.
또한, 본 발명에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, 상기 탄성지지부의 탄성지지핀은 다층박막거울의 상하부 전후단 네 귀퉁이를 지지할 수 있도록 각각 네 군데에 배치되고, 이에 대응되는 입사각조절부의 조절핀도 그 반대편 네 귀퉁이를 가압할 수 있도록 각각 네 군데에 배치되는 구조로 된 것을 특징으로 한다.In addition, in the multilayer thin film mirror aligning device for the monochromatic X-ray generator according to the present invention, the elastic support pins of the elastic support are disposed in four places so as to support four corners of the upper, lower, front and lower ends of the multilayer thin film mirror, respectively. The adjustment pin of the incident angle control unit is also characterized in that the structure is arranged in each of four places so as to press the opposite four corners.
그리고, 본 발명의 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 이용한 엑스선 영상획득방법은 상기 정렬장치를 이용하여 이중에너지를 획득하기 위해 한 쌍의 다층박막거울을 엑스선발생부의 센터와 디텍터부의 센터를 연결한 기준선을 바탕으로 대칭 배열하여 한 쪽은 낮은 에너지 영역의 모노크로매틱 에너지를 획득하고, 다른 쪽은 높은 에너지 영역의 모노크로매틱 에너지를 획득하여 정렬장치 선단의 콜리메이트로 두 에너지 영역의 모노크로매틱을 선택적으로 취할 수 있도록 한 것을 특징으로 한다.In addition, the X-ray image acquisition method using the multilayer thin film mirror aligning device for the monochromatic X-ray generator of the present invention uses a pair of multilayer thin film mirrors to obtain the dual energy using the alignment device. Symmetrical arrangement based on the connected baseline, one acquires monochromatic energy in the low energy region, and the other acquires monochromatic energy in the high energy region. It is characterized by selectively taking.
그리고, 본 발명의 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 이용한 엑스선 영상획득방법은 상기 정렬장치를 이용하여 여러 개의 다층박막거울을 통해 나오는 동일한 모노크로매틱 엑스선이 다층박막거울의 자체 두께와 정렬되는 다층박막거울 간의 간격으로 인해 모노크로매틱 엑스선 사이에 발생하는 엑스선이 없는 영역이 최소가 되도록 하는 위치로 다층박막거울을 미세하게 정렬시킬 수 있도록 한 것을 특징으로 한다.In addition, the X-ray image acquisition method using the multilayer thin film mirror aligning device for the monochromatic X-ray generator of the present invention is that the same monochromatic X-rays coming out through multiple multilayer thin film mirrors are aligned with the thickness of the multilayer thin film mirror using the aligning device. Due to the spacing between the multilayer thin film mirrors, it is possible to finely align the multilayer thin film mirror to a position where the area without X-rays generated between the monochromatic X-rays is minimized.
그리고, 본 발명의 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 이용한 엑스선 영상획득방법은 상기 정렬장치를 이용하되 엑스선발생부와 디텍터부가 동일 베이스 상에 배치되도록 하여 엑스선발생부를 축으로 각 구성부가 일정한 반경을 갖는 원호를 따라 회전하면서 피사체를 스캔하여 영상을 획득할 수 있도록 한 것을 특징으로 한다.The X-ray image acquisition method using the multilayer thin film mirror alignment device for the monochromatic X-ray generator of the present invention uses the alignment device, but the X-ray generation unit and the detector unit are arranged on the same base so that each component is constant along the X-ray generation unit. The image may be acquired by scanning a subject while rotating along an arc having a radius.
이상에서와 같이, 본 발명의 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 및 이를 이용한 엑스선 영상획득방법은 베이스지그, 탄성지지부 및 입사각조절부를 포함하는 정렬장치를 마련하여 다층박막거울의 위치를 미세하게 조절할 수 있도록 함으로써, 기본적으로 사용자가 자유자재로 원하는 특정 에너지 대역의 에너지만을 선별적으로 결정할 수 있게 되어 이에 따라 측정하고자 하는 물질에 상응하는 최적의 모노크로매틱의 엑스선 영상을 얻을 수 있고, 또한, 모노크로매틱 엑스선의 특징을 통해 영상의 명암도(Contrast)를 높여 고화질의 엑스선 영상을 얻을 수 있을 뿐 아니라 인체 진단용으로 사용하고자 할 경우 환자의 방사선 피폭을 크게 줄일 수 있게 되는 등의 효과를 얻는다.As described above, the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator of the present invention and the X-ray image acquisition method using the same are provided with an alignment device including a base jig, an elastic support and an angle of incidence adjusting part to finely position the multilayer thin film mirror. By adjusting, basically, the user can freely selectively determine only the energy of a specific energy band that he / she wants, thereby obtaining an optimal monochromatic X-ray image corresponding to the material to be measured. The characteristics of chromatic X-rays increase the contrast of the image, thereby obtaining high-quality X-ray images, and greatly reducing the radiation exposure of the patient when it is used for human diagnosis.
도 1은 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기를 나타낸 개략사시도이다. 1 is a schematic perspective view showing a monochromatic X-ray generator according to an embodiment of the present invention.
도 2 및 도 3은 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 나타낸 사시도이다.2 and 3 are perspective views showing a multilayer thin film mirror aligning apparatus for a monochromatic X-ray generator according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 나타낸 정면도이다. 4 is a front view showing a multilayer thin film mirror aligning apparatus for a monochromatic X-ray generator according to an exemplary embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 중 베어스지그를 나타낸 사시도이다. 5 is a perspective view showing a bear jig of the multilayer thin film mirror aligning apparatus for the monochromatic X-ray generator according to an embodiment of the present invention.
도 6은 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 중 입사각조절부를 나타낸 부분사시도이다.FIG. 6 is a partial perspective view illustrating an incident angle control unit of a multilayer thin film mirror alignment device for a monochromatic X-ray generator according to an exemplary embodiment of the present invention.
도 7은 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치 중 탄성지지부를 나타낸 사시도이다.7 is a perspective view showing an elastic support of the multilayer thin film mirror alignment device for the monochromatic X-ray generator according to the embodiment of the present invention.
도 8 내지 도 10은 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 이용한 엑스선 영상획득방법을 나타낸 개략도이다.8 to 10 are schematic views illustrating an X-ray image acquisition method using a multilayer thin film mirror alignment device for a monochromatic X-ray generator according to an embodiment of the present invention.
이하, 첨부되는 도면를 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1 내지 도 7에 나타낸 것과 같이, 본 발명의 일 실시예에 따른 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치는 엑스선을 발생시켜 피사체(2)에 조사하는 엑스선발생부(4)와, 복수의 다층박막거울(5)을 통해 나오는 모노크로매틱 엑스선을 이용하여 피사체(2)의 영상을 획득하는 디텍터부(6) 사이에 배치되되, 상기 엑스선으로부터 모노크로매틱 엑스선을 생성시키는 다층박막거울(5)에 필요한 입사각을 부여하기 위해 이들을 정렬시키며 상기 엑스선의 조사방향을 제한하는 콜리메이터부(8)를 포함하여 구성되고, 상기 정렬장치는, 상기 다층박막거울(5)이 직립 배치되도록 하는 베이스지그(10)와, 이 베이스지그(10)에 직립되어 있는 다층박막거울(5)의 일면을 탄성 지지하기 위한 탄성지지부(20) 및 상기 탄성지지부(20)에 의해 일면이 탄성 지지되어 있는 다층박막거울(5)의 배면을 밀어 엑스선의 입사각을 조절할 수 있도록 하는 입사각조절부(30)를 포함하는 구성으로 되어 있다.As shown in FIGS. 1 to 7, the apparatus for aligning a multilayer thin film mirror for a monochromatic X-ray generator according to an exemplary embodiment of the present invention includes an X-ray generator 4 for generating X-rays and irradiating the subject 2 with a plurality of X-ray generators. It is disposed between the detector unit 6 for acquiring the image of the subject (2) by using the monochromatic X-rays emitted through the multilayer thin film mirror (5), in the multilayer thin film mirror (5) for generating a monochromatic X-ray from the X-rays And a collimator portion 8 which aligns them to give a necessary angle of incidence and restricts the direction of irradiation of the X-rays, wherein the alignment device comprises a base jig 10 which allows the multilayer thin film mirror 5 to be placed upright. One surface is elastically supported by an elastic support portion 20 and an elastic support portion 20 for elastically supporting one surface of the multilayer thin film mirror 5 standing upright on the base jig 10. It is configured to include an angle of incidence control unit 30 to adjust the angle of incidence of the X-ray by pushing the back of the multilayer thin film mirror (5).
상기 베이스지그(10)는, 상기 엑스선발생부(4)와 디텍터부(6)의 중심을 잇는 기준선에 대해 직교되는 방향으로 배치되되, 각각 다층박막거울(5)의 높이만큼 상하로 이격되고 전후 길이만큼 전후로 이격되며, 그 중앙에 다층박막거울(5)의 상하단 전후부가 각각 삽입되어 기본 장착되도록 일정간격 이격된 복수의 장착핀(11a)을 갖는 복수의 수평틀(11) 및 이 복수의 수평틀(11)의 양단부를 연결하여 메인하우징(15)에 고정되는 복수의 수직틀(12)을 포함하여 구성된다.The base jig 10 is disposed in a direction orthogonal to a reference line connecting the centers of the X-ray generating unit 4 and the detector unit 6, respectively, spaced vertically and spaced apart by the height of the multilayer thin film mirror 5. A plurality of horizontal frames 11 and a plurality of horizontal frames having a plurality of mounting pins 11a spaced apart at regular intervals so as to be spaced apart from the front and rear by the length, and the front and rear ends of the multilayer thin film mirror 5 are respectively inserted in the center. It comprises a plurality of vertical frame 12 is fixed to the main housing 15 by connecting both ends of the frame (11).
그리고, 상기 장착핀(11a)의 이격 간격은 다층박막거울(5)의 두께보다 넓게 형성되어 이 장착핀(11a)들 사이에서 다층박막거울(5)이 좌우로 틀어지면서 입사각의 미세 조절이 가능하도록 되어 있다.The spacing of the mounting pins 11a is wider than the thickness of the multilayer thin film mirror 5, so that the multilayer thin film mirror 5 is twisted from side to side between the mounting pins 11a to finely adjust the incident angle. It is supposed to be.
여기서, 베이스지그(10)는 전, 후부에 각각 상, 하로 한 쌍을 이루며 다층박막거울(5)을 정렬하고자 하는 위치에 탈, 부착이 가능하도록 되어 있고, 정렬이 완료되면 각각의 다층박막거울(5)들은 베이스지그(10)에 적절한 에폭시로 접착하여 고정시키는 것이 바람직할 것이다.Here, the base jig 10 is paired up and down at the front and rear, respectively, and is detachable and attachable to a position where the multilayer thin film mirror 5 is to be aligned, and when the alignment is completed, each multilayer thin film mirror is completed. (5) It would be desirable to adhere and fix the base jig 10 with a suitable epoxy.
상기 탄성지지부(20)는, 상기 베이스지그(10) 일단부에 연결 고정되어 있는 메인하우징(15)과 나사 결합되어 관통되는 로드(21)와, 이 로드(21)의 관통된 일단부와 연결되어 이 로드(21)와 일체로 좌우 이동되는 이동판(22)과, 이 이동판(22)의 일단부에 연결되어 상기 해당 다층박막거울(5)의 일면과 맞닿아 탄성 지지하기 위한 복수의 탄성지지핀(23)을 포함하여 구성된다.The elastic support part 20 is connected to the rod 21 through which the main housing 15 is fixedly connected to one end of the base jig 10 and penetrated therethrough, and the one end of the rod 21 penetrated therethrough. A plurality of movable plates 22 which are integrally moved with the rod 21 and left and right, and connected to one end of the movable plate 22 to elastically support one surface of the multilayer thin-film mirror 5. It is configured to include an elastic support pin (23).
한편, 상기 복수의 다층박막거울(5)은 탄성지지부(20) 방향으로 갈수록 그 전후단 길이가 짧아지는 구조로 되고, 이에 대응되는 복수의 탄성지지핀(20)은 상기 해당 다층박막거울(5)들의 일측면에 동시 밀착되도록 다층박막거울 중심으로 갈수록 길이가 짧아지는 구조로 되어 있다.Meanwhile, the plurality of multilayer thin film mirrors 5 have a structure in which the front and rear ends thereof become shorter in the direction of the elastic support part 20, and the plurality of elastic support pins 20 corresponding to the multilayer thin film mirrors 5 The length becomes shorter toward the center of the multi-layer thin film mirror so as to be in close contact with one side of them simultaneously.
그리고, 상기 탄성지지핀(23)은 그 선단부가 스프링(23a)에 의해 탄성 지지되어 전후로 출몰되는 출몰부(23b)가 마련되어 있다.In addition, the elastic support pin 23 is provided with a projecting portion 23b whose front end portion is elastically supported by the spring 23a to be projected back and forth.
이러한 상기 탄성지지핀(23)은 수십 ~ 수백 gf의 장력으로 각각의 다층박막거울(5)을 탄성 가압하여 원하는 모노크로매틱 엑스선을 얻기 위한 입사각을 갖는 위치로 정렬되도록 하는 역할을 수행한다. The elastic support pins 23 serve to elastically press each multilayer thin film mirror 5 with a tension of several tens to hundreds of gf so that they are aligned at positions having an incident angle for obtaining a desired monochromatic X-ray.
상기 입사각조절부(30)는, 상기 메인하우징(15)과 연결되고 베이스지그(10)의 외측에 배치되는 가이드레일(31)과, 이 가이드레일(31)에 결합되어 다층박막거울(5) 방향으로 슬라이딩되며 이 다층박막거울(5)을 탄성지지부(20) 방향으로 밀어서 입사각을 조절할 수 있도록 하는 복수의 조절핀(32a)을 갖는 슬라이더(32) 및 상기 탄성지지부(20) 맞은편의 가이드레일(31) 외측에 배치되고 슬라이더(32)와 연결되어 이 슬라이더(32)를 미세하게 슬라이딩시키는 미세조절노브(33)를 포함하여 구성된다.The incidence angle adjusting part 30 is connected to the main housing 15 and is disposed on the outside of the base jig 10, and a guide rail 31 coupled to the guide rail 31 and the multilayer thin film mirror 5. Slider 32 having a plurality of adjustment pins (32a) to slide the multi-layer thin film mirror (5) in the direction of the elastic support 20 to adjust the angle of incidence and the guide rail opposite the elastic support 20 (31) It is configured to include a fine adjustment knob 33 disposed on the outside and connected to the slider 32 to finely slide the slider 32.
그리고, 상기 탄성지지부(20) 측의 가이드레일(31)에 슬라이더(32)의 일단부를 탄성 지지하기 위한 스프링(34)이 배치되어 있다.The spring 34 for elastically supporting one end of the slider 32 is disposed on the guide rail 31 on the elastic support 20 side.
한편, 상기 탄성지지부(20)의 탄성지지핀(23)은 다층박막거울(5)의 상하부 전후단 네 귀퉁이를 지지할 수 있도록 각각 네 군데에 배치되고, 이에 대응되는 입사각조절부(30)의 조절핀(32a)도 그 반대편 네 귀퉁이를 가압할 수 있도록 각각 네 군데에 배치되는 구조로 되어 있다.On the other hand, the elastic support pin 23 of the elastic support 20 is disposed in each of four places so as to support the four corners of the upper and lower front and lower ends of the multilayer thin film mirror 5, the corresponding angle of incidence control unit 30 The control pins 32a are also arranged in four positions so as to press four opposite corners thereof.
이러한 입사각조절부(30)는 각각의 다층박막거울(5)을 미세하게 조절 가능하도록 슬라이더(32)를 슬라이딩 동작시키기 위해 미세조절노브(33)를 수동 마이크로미터나 모터구동의 액추에이터를 사용하는 것이 바람직할 것이다.The incidence angle adjusting unit 30 uses a manual micrometer or a motor-driven actuator using the fine adjustment knob 33 to slide the slider 32 to finely adjust each multilayer thin film mirror 5. Would be desirable.
또한, 상기 조절핀(32a)은 높은 강도의 재질로 제작되고 다층박막거울(5)들의 사이에서 움직일 수 있도록 1mm 이하의 두께를 가지며 다층박막거울(5)들 사이에서 정렬 위치에 맞도록 각각 계단 구조로 되어 있다. In addition, the control pin 32a is made of a material of high strength and has a thickness of 1 mm or less so as to move between the multilayer thin film mirrors 5, and each step to match the alignment position between the multilayer thin film mirrors 5. It is structured.
이러한 구성에 따른 본 발명은 상기와 같이 베이스지그(10)의 장착핀(11a)에 여러 개의 다층박막거울(5)을 목표로 하는 대략적인 위치에 놓이도록 배치시킨 후, 탄성지지핀(23)으로 다층박막거울(5)을 반대쪽으로 밀어 탄성 지지되도록 한 상태에서 다시 반대편의 조절핀(32a)을 통해 다층박막거울(5)을 밀어 미세 조정하여 각 다층박막거울(5)을 목표로 하는 위치에 정렬시킴으로써, 목표로 하는 모노크로매틱 엑스선을 얻을 수 있는 입사각을 각 다층박막거울(5)에 부여할 수 있게 되는 것이다.The present invention according to this configuration is arranged to be placed on the mounting pin (11a) of the base jig 10 to the approximate position to target the multi-layered thin film mirror (5), the elastic support pin 23 Push the multi-layer thin film mirror (5) to the opposite side to be elastically supported in the state to push the multi-layer thin film mirror (5) through the control pins (32a) of the opposite side again to finely adjust the position to target each multi-layer thin film mirror (5) By aligning with, the incidence angle at which the target monochromatic X-ray can be obtained can be given to each multilayer thin film mirror 5.
이러한 방법을 통해 일례로, 도 8에서와 같이, 이중에너지를 획득하기 위해 한 쌍의 다층박막거울(5)을 엑스선발생부(4)의 센터와 디텍터부(6)의 센터를 연결한 기준선을 바탕으로 대칭 배열하여 한 쪽은 낮은 에너지 영역의 모노크로매틱 에너지를 획득하고, 다른 쪽은 높은 에너지 영역의 모노크로매틱 에너지를 획득하여 정렬장치 선단의 콜리메이트(8)로 두 에너지 영역의 모노크로매틱을 선택적으로 취할 수 있도록 할 수 있다.Through this method, for example, as shown in FIG. 8, in order to obtain dual energy, a reference line connecting a pair of multilayer thin film mirrors 5 to the center of the X-ray generator 4 and the center of the detector unit 6 is used. On the basis of symmetrical arrangement, one acquires monochromatic energy in the low energy region, and the other acquires monochromatic energy in the high energy region, and selects the monochromatics of the two energy regions with collimates (8) at the tip of the alignment device. Can be taken.
또한, 도 9에서와 같이, 여러 개의 다층박막거울(5)을 통해 나오는 동일한 모노크로매틱 엑스선이 다층박막거울(5)의 자체 두께와 정렬되는 다층박막거울(5) 간의 간격으로 인해 모노크로매틱 엑스선 사이에 발생하는 엑스선이 없는 영역이 최소가 되도록 하는 위치로 다층박막거울(5)을 미세하게 정렬시킬 수 있도록 할 수도 있다.In addition, as shown in FIG. 9, between the monochromatic X-rays due to the spacing between the multilayer thin film mirrors 5 in which the same monochromatic X-rays exiting through the multilayer thin film mirrors 5 are aligned with the thickness of the multilayer thin film mirrors 5. It may be possible to finely align the multilayer thin film mirror 5 in such a position that the region free of X-rays generated at a minimum is minimized.
여기서, 상기 피사체(2)의 두께가 10mm 이하인 경우에 대해 기대되는 공간해상도는 대략 30㎛정도를 얻을 수 있을 것이다. Here, the expected spatial resolution for the case where the thickness of the subject 2 is 10 mm or less may be approximately 30 μm.
또는, 도 10에서와 같이, 엑스선발생부(4)와 디텍터부(6)가 동일 베이스(40) 상에 배치되도록 하여 엑스선발생부(4)를 축으로 각 구성부가 일정한 반경을 갖는 원호를 따라 회전하면서 피사체(2)를 스캔하여 영상을 획득할 수도 있을 것이다.Alternatively, as shown in FIG. 10, the X-ray generator 4 and the detector unit 6 are disposed on the same base 40 so that each component part along the X-ray generator 4 has a predetermined radius along a circular arc. The image may be acquired by scanning the subject 2 while rotating.
이와 같이, 본 발명은 베이스지그, 탄성지지부 및 입사각조절부를 포함하는 정렬장치를 마련하여 다층박막거울의 위치를 미세하게 조절할 수 있도록 함으로써, 기본적으로 사용자가 자유자재로 원하는 특정 에너지 대역의 에너지만을 선별적으로 결정할 수 있게 되어 이에 따라 측정하고자 하는 물질에 상응하는 최적의 모노크로매틱의 엑스선 영상을 얻을 수 있고, 또한, 모노크로매틱 엑스선의 특징을 통해 영상의 명암도(Contrast)를 높여 고화질의 엑스선 영상을 얻을 수 있을 뿐 아니라 인체 진단용으로 사용하고자 할 경우 환자의 방사선 피폭을 크게 줄일 수 있게 되는 것이다. As such, the present invention provides an alignment device including a base jig, an elastic support and an incident angle adjusting unit to finely adjust the position of the multilayer thin film mirror, thereby basically selecting only energy of a specific energy band desired by the user freely. As a result, an optimal monochromatic X-ray image corresponding to the material to be measured can be obtained, and a high quality X-ray image can be obtained by increasing contrast of the image through the characteristics of the monochromatic X-ray. In addition, if you want to use for human diagnostics will be able to significantly reduce the radiation exposure of the patient.
이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였으나, 본 발명은 상기의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이나, 이와 같은 변경은 본 발명의 청구범위 내에 포함된다고 볼 수 있다.Although the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the above embodiments, it is a common knowledge in the field of the present invention without departing from the gist of the invention claimed in the claims Anyone with a variety of modifications can be made, of course, such changes can be seen to be included within the scope of the claims of the present invention.

Claims (10)

  1. 엑스선을 발생시켜 피사체(2)에 조사하는 엑스선발생부(4)와, 복수의 다층박막거울(5)을 통해 나오는 모노크로매틱 엑스선을 이용하여 피사체(2)의 영상을 획득하는 디텍터부(6) 사이에 배치되되, 상기 엑스선으로부터 모노크로매틱 엑스선을 생성시키는 다층박막거울(5)에 필요한 입사각을 부여하기 위해 이들을 정렬시키며 상기 엑스선의 조사방향을 제한하는 콜리메이터부(8)를 포함하여 구성되는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치에 있어서, An X-ray generator 4 for generating X-rays and irradiating the subject 2 and a detector unit 6 for acquiring an image of the subject 2 using monochromatic X-rays emitted through the plurality of multilayer thin film mirrors 5. The monochromatic is disposed between, and including a collimator portion (8) to align them in order to give the necessary angle of incidence to the multilayer thin film mirror (5) for generating monochromatic X-rays from the X-rays and to limit the direction of irradiation of the X-rays In the multilayer thin film mirror aligning device for X-ray generator,
    상기 정렬장치는, The alignment device,
    상기 다층박막거울(5)이 직립 배치되도록 하는 베이스지그(10);A base jig 10 for allowing the multilayer thin film mirror 5 to be disposed upright;
    상기 베이스지그(10)에 직립되어 있는 다층박막거울(5)의 일면을 탄성 지지하기 위한 탄성지지부(20); 및An elastic support part 20 for elastically supporting one surface of the multilayer thin film mirror 5 standing upright on the base jig 10; And
    상기 탄성지지부(20)에 의해 일면이 탄성 지지되어 있는 다층박막거울(5)의 배면을 밀어 엑스선의 입사각을 조절할 수 있도록 하는 입사각조절부(30);Incident angle control unit 30 to adjust the incidence angle of the X-rays by pushing the back of the multilayer thin film mirror 5 is elastically supported by the elastic support portion 20;
    를 포함하여 구성된 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치. Monolayer thin film mirror alignment device for monochromatic X-ray generator, characterized in that configured to include.
  2. 제1항에 있어서,The method of claim 1,
    상기 베이스지그(10)는,The base jig 10,
    상기 엑스선발생부(4)와 디텍터부(6)의 중심을 잇는 기준선에 대해 직교되는 방향으로 배치되되, 각각 다층박막거울(5)의 높이만큼 상하로 이격되고 전후 길이만큼 전후로 이격되며, 그 중앙에 다층박막거울(5)의 상하단 전후부가 각각 삽입되어 기본 장착되도록 일정간격 이격된 복수의 장착핀(11a)을 갖는 복수의 수평틀(11); 및The X-ray generator 4 and the detector unit 6 are arranged in a direction orthogonal to a reference line connecting the centers, respectively, spaced up and down by the height of the multilayer thin film mirror 5, and spaced forward and backward by the front and rear lengths, respectively A plurality of horizontal frames (11) having a plurality of mounting pins (11a) spaced at regular intervals such that upper and lower front and rear portions of the multilayer thin film mirror (5) are respectively inserted into and mounted in the base; And
    상기 복수의 수평틀(11)의 양단부를 연결하여 메인하우징(15)에 고정되는 복수의 수직틀(12);A plurality of vertical frames 12 fixed to the main housing 15 by connecting both ends of the plurality of horizontal frames 11;
    을 포함하여 구성된 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치. Monolayer thin film mirror alignment apparatus for a monochromatic X-ray generator, characterized in that configured to include.
  3. 제2항에 있어서,The method of claim 2,
    상기 장착핀(11a)의 이격 간격은 다층박막거울(5)의 두께보다 넓게 형성되어 이 장착핀(11a)들 사이에서 다층박막거울(5)이 좌우로 틀어지면서 입사각의 미세 조절이 가능하도록 된 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치. The spaced interval between the mounting pins 11a is wider than the thickness of the multilayer thin film mirror 5 so that the multilayer thin film mirror 5 is twisted from side to side between the mounting pins 11a to allow fine adjustment of the incident angle. Multi-layer thin film mirror alignment device for monochromatic X-ray generator, characterized in that.
  4. 제1항에 있어서,The method of claim 1,
    상기 탄성지지부(20)는,The elastic support 20,
    상기 베이스지그(10) 일단부에 연결 고정되어 있는 메인하우징(15)과 나사 결합되어 관통되는 로드(21);A rod 21 threadedly coupled to the main housing 15 which is connected and fixed to one end of the base jig 10;
    상기 로드(21)의 관통된 일단부와 연결되어 이 로드(21)와 일체로 좌우 이동되는 이동판(22);A moving plate 22 connected to one end of the rod 21 and moved left and right integrally with the rod 21;
    상기 이동판(22)의 일단부에 연결되어 상기 해당 다층박막거울(5)의 일면과 맞닿아 탄성 지지하기 위한 복수의 탄성지지핀(23);A plurality of elastic support pins 23 connected to one end of the movable plate 22 to elastically support one surface of the corresponding multilayer thin film mirror 5;
    을 포함하여 구성된 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치. Monolayer thin film mirror alignment apparatus for a monochromatic X-ray generator, characterized in that configured to include.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 복수의 다층박막거울(5)은 탄성지지부(20) 방향으로 갈수록 그 전후단 길이가 짧아지는 구조로 되고,The plurality of multilayer thin film mirrors 5 have a structure in which the front and rear ends thereof become shorter in the direction of the elastic support 20.
    이에 대응되는 복수의 탄성지지핀(20)은 상기 해당 다층박막거울(5)들의 일측면에 동시 밀착되도록 다층박막거울 중심으로 갈수록 길이가 짧아지는 구조로 되고,The plurality of elastic support pins 20 corresponding thereto have a structure in which the length thereof becomes shorter toward the center of the multilayer thin film mirror to be in close contact with one side of the corresponding multilayer thin film mirrors 5,
    상기 탄성지지핀(23)은 그 선단부가 스프링(23a)에 의해 탄성 지지되어 전후로 출몰되는 출몰부(23b)가 마련된 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치. The elastic support pin 23 is a multi-layer thin film mirror aligning device for a monochromatic X-ray generator, characterized in that the front end is elastically supported by a spring (23a) is provided with a projecting portion (23b) to go out.
  6. 제1항에 있어서,The method of claim 1,
    상기 입사각조절부(30)는,The incident angle control unit 30,
    상기 메인하우징(15)과 연결되고 베이스지그(10)의 외측에 배치되는 가이드레일(31);A guide rail 31 connected to the main housing 15 and disposed outside the base jig 10;
    상기 가이드레일(31)에 결합되어 다층박막거울(5) 방향으로 슬라이딩되며 이 다층박막거울(5)을 탄성지지부(20) 방향으로 밀어서 입사각을 조절할 수 있도록 하는 복수의 조절핀(32a)을 갖는 슬라이더(32); 및It is coupled to the guide rail 31 has a plurality of adjustment pins (32a) to slide in the direction of the multilayer thin film mirror (5) to adjust the incident angle by pushing the multilayer thin film mirror (5) in the direction of the elastic support (20) Slider 32; And
    상기 탄성지지부(20) 맞은편의 가이드레일(31) 외측에 배치되고 슬라이더(32)와 연결되어 이 슬라이더(32)를 미세하게 슬라이딩시키는 미세조절노브(33);A fine adjustment knob 33 disposed outside the guide rail 31 opposite the elastic support 20 and connected to the slider 32 to finely slide the slider 32;
    를 포함하여 구성되고,It is configured to include,
    상기 탄성지지부(20) 측의 가이드레일(31)에 슬라이더(32)의 일단부를 탄성 지지하기 위한 스프링(34)이 배치된 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치. A device for aligning a multilayer thin film mirror for a monochromatic X-ray generator, characterized in that a spring (34) for elastically supporting one end of the slider (32) is disposed on the guide rail (31) on the side of the elastic support (20).
  7. 제6항에 있어서,The method of claim 6,
    상기 탄성지지부(20)의 탄성지지핀(23)은 다층박막거울(5)의 상하부 전후단 네 귀퉁이를 지지할 수 있도록 각각 네 군데에 배치되고, 이에 대응되는 입사각조절부(30)의 조절핀(32a)도 그 반대편 네 귀퉁이를 가압할 수 있도록 각각 네 군데에 배치되는 구조로 된 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치. The elastic support pins 23 of the elastic support 20 are disposed in four places so as to support four corners of the upper, lower, front and lower ends of the multilayer thin film mirror 5, and the adjustment pins of the incident angle control unit 30 corresponding thereto. (32a) is a multilayer thin film mirror aligning device for a monochromatic X-ray generator, characterized in that the structure is arranged in each of four places so as to press the opposite four corners.
  8. 제1항 기재의 정렬장치를 이용하여 이중에너지를 획득하기 위해 한 쌍의 다층박막거울(5)을 엑스선발생부(4)의 센터와 디텍터부(6)의 센터를 연결한 기준선을 바탕으로 대칭 배열하여 한 쪽은 낮은 에너지 영역의 모노크로매틱 에너지를 획득하고, 다른 쪽은 높은 에너지 영역의 모노크로매틱 에너지를 획득하여 정렬장치 선단의 콜리메이트(8)로 두 에너지 영역의 모노크로매틱을 선택적으로 취할 수 있도록 한 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 이용한 엑스선 영상획득방법.A pair of multilayer thin film mirrors 5 are symmetrical based on a reference line connecting the center of the X-ray generator 4 and the center of the detector 6 to obtain dual energy using the alignment device of claim 1. Arrange one side to obtain monochromatic energy in the low energy region, and the other side to obtain monochromatic energy in the high energy region and selectively take monochromatic in both energy regions with the collimator 8 at the tip of the alignment device. X-ray image acquisition method using a multi-layer thin film mirror alignment device for monochromatic X-ray generator, characterized in that.
  9. 제1항 기재의 정렬장치를 이용하여 여러 개의 다층박막거울(5)을 통해 나오는 동일한 모노크로매틱 엑스선이 다층박막거울(5)의 자체 두께와 정렬되는 다층박막거울(5) 간의 간격으로 인해 모노크로매틱 엑스선 사이에 발생하는 엑스선이 없는 영역이 최소가 되도록 하는 위치로 다층박막거울(5)을 미세하게 정렬시킬 수 있도록 한 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 이용한 엑스선 영상획득방법.Monochromatic due to the spacing between the multilayer thin film mirrors 5 in which the same monochromatic X-rays exiting through the multiple thin film mirrors 5 are aligned with the thickness of the multilayer thin film mirror 5 using the alignment device of claim 1. X-ray image acquisition method using a multilayer thin film mirror aligning device for a monochromatic X-ray generator, characterized in that the multilayer thin film mirror (5) can be finely aligned to a position where the area without X-rays generated between X-rays is minimized. .
  10. 제1항 기재의 정렬장치를 이용하되 엑스선발생부(4)와 디텍터부(6)가 동일 베이스(40) 상에 배치되도록 하여 엑스선발생부(4)를 축으로 각 구성부가 일정한 반경을 갖는 원호를 따라 회전하면서 피사체(2)를 스캔하여 영상을 획득할 수 있도록 한 것을 특징으로 하는 모노크로매틱 엑스선 발생기용 다층박막거울 정렬장치를 이용한 엑스선 영상획득방법.Using the alignment device of claim 1, wherein the X-ray generator 4 and the detector unit 6 are arranged on the same base 40 so that each component is a circular arc having a constant radius around the X-ray generator 4 X-ray image acquisition method using a multi-layer thin film mirror aligning device for a monochromatic X-ray generator, characterized in that to obtain an image by scanning the subject (2) while rotating along.
PCT/KR2010/005024 2010-04-05 2010-07-30 Multilayer film mirror alignment device for a monochromatic x-ray tube, and a method for acquiring an x-ray image using the same WO2011149146A1 (en)

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US4698833A (en) * 1985-05-14 1987-10-06 Energy Conversion Devices, Inc. Subassembly, method and system for monochromatizing X-rays
KR20060035610A (en) * 2003-06-03 2006-04-26 모노크로매틱 엑스-레이 필터 테크놀로지스 인코포레이티드 Narrow band x-ray system and fabrication method thereof
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