WO2017171258A3 - X선 검출용 디텍터의 신호를 교정하기 위한 방법 및 시스템 - Google Patents

X선 검출용 디텍터의 신호를 교정하기 위한 방법 및 시스템 Download PDF

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WO2017171258A3
WO2017171258A3 PCT/KR2017/002519 KR2017002519W WO2017171258A3 WO 2017171258 A3 WO2017171258 A3 WO 2017171258A3 KR 2017002519 W KR2017002519 W KR 2017002519W WO 2017171258 A3 WO2017171258 A3 WO 2017171258A3
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detector
microprocessor
correcting
ray
regard
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WO2017171258A2 (ko
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신영훈
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주식회사 칼레이도소프트
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    • 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
    • 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
    • A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
    • 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
    • A61B6/48—Diagnostic techniques
    • A61B6/482—Diagnostic techniques involving multiple energy imaging
    • 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
    • A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
    • A61B6/5205—Devices using data or image processing specially adapted for radiation diagnosis involving processing of raw data to produce diagnostic data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G06T11/008—Specific post-processing after tomographic reconstruction, e.g. voxelisation, metal artifact correction
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

X선 검출용 디텍터의 신호 교정 방법 및 시스템이 개시된다. 일 실시예에 따르면, 디텍터 검사 장비(100)와 X선 촬영 장비(200)로 구성된 디텍터 신호 교정 시스템(10)을 이용한 X선 검출용 디텍터의 신호 교정 방법으로서, 상기 디텍터 검사 장비(100)는 제1 X선 조사부(110) 및 제1 마이크프로세서(120)를 포함하고, 상기 X선 촬영 장비(200)는 제2 X선 조사부(210), 교정 대상 디텍터(D) 및 제2 마이크로프로세서(220)를 포함하며, 상기 교정 방법은, (S10) 상기 제1 마이크로프로세서(120)에 의해 상기 디텍터(D)에 대해 복수의 다크 이미지를 획득하여 상기 디텍터(D)의 각 픽셀에 대해 신호표준편차 및 1차오프셋을 산출하는 단계; (S20) 상기 제1 마이크로프로세서(120)에 의해 상기 신호표준편차 및 상기 1차오프셋 정보에 기초하여 제1그룹 배드픽셀(BP1)을 선별하는 단계; (S30) 상기 제1 마이크로프로세서(120)에 의해 상기 디텍터(D)에 대해 복수의 브라이트 이미지를 획득하여 상기 디텍터(D)의 각 픽셀에 대해 2차오프셋 및 게인을 산출하는 단계; (S40) 상기 제1 마이크로프로세서(120)에 의해 상기 2차오프셋 및 상기 게인 정보에 기초하여 제2그룹 배드픽셀(BP2)을 선별하는 단계; (S50) 상기 제1 마이크로프로세서(120)에 의해, 상기 브라이트 이미지 획득 시 얻어진 각 픽셀의 검출 신호를 상기 1차 오프셋, 상기 2차 오프셋 및 상기 게인에 기초하여 교정한 교정 신호 값에 기초하여 제3그룹 배드픽셀(BP3)을 선별함으로써 배드픽셀맵(BPM)을 완성하는 단계; 및 (S60) X선 촬영 장비(200)를 가지고 피검사체에 대한 X선 영상을 촬영할 때, 상기 제2 마이크로프로세서(220)에 의해 상기 배드픽셀맵(BPM)을 이용하여 배드픽셀들의 신호들을 교정하는 단계;를 포함하는, X선 검출용 디텍터의 신호 교정 방법이 제공된다.
PCT/KR2017/002519 2016-03-28 2017-03-08 X선 검출용 디텍터의 신호를 교정하기 위한 방법 및 시스템 WO2017171258A2 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160036890A KR101793105B1 (ko) 2016-03-28 2016-03-28 X선 검출용 디텍터의 신호를 교정하기 위한 방법 및 시스템
KR10-2016-0036890 2016-03-28

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WO2017171258A2 WO2017171258A2 (ko) 2017-10-05
WO2017171258A3 true WO2017171258A3 (ko) 2018-08-02

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Publication number Priority date Publication date Assignee Title
CN117237234B (zh) * 2023-11-09 2024-01-30 杭州睿影科技有限公司 应用于x射线安检设备的图像校正方法、装置及电子设备

Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2007222501A (ja) * 2006-02-24 2007-09-06 Shimadzu Corp Ｘ線透視撮影装置
KR20080043851A (ko) * 2005-08-31 2008-05-19 가부시키가이샤 시마즈세이사쿠쇼 방사선 촬상장치 및 방사선 검출신호 처리방법
JP2008229194A (ja) * 2007-03-23 2008-10-02 Hitachi Medical Corp Ｘ線画像診断装置
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KR20080043851A (ko) * 2005-08-31 2008-05-19 가부시키가이샤 시마즈세이사쿠쇼 방사선 촬상장치 및 방사선 검출신호 처리방법
JP2007222501A (ja) * 2006-02-24 2007-09-06 Shimadzu Corp Ｘ線透視撮影装置
JP2008229194A (ja) * 2007-03-23 2008-10-02 Hitachi Medical Corp Ｘ線画像診断装置
KR20110091354A (ko) * 2010-02-05 2011-08-11 성균관대학교산학협력단 치과용 동영상 디지털 엑스선 영상 획득 시스템

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