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1. WO2018212217 - DATA PROCESSING DEVICE AND DATA PROCESSING METHOD FOR X-RAY INSPECTION, AND X-RAY INSPECTING DEVICE WITH SAID DEVICE MOUNTED THEREIN

Publication Number WO/2018/212217
Publication Date 22.11.2018
International Application No. PCT/JP2018/018867
International Filing Date 16.05.2018
IPC
G01N 23/087 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
02by transmitting the radiation through the material
06and measuring the absorption
083the radiation being X-rays
087using polyenergetic X-rays
A61B 6/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
G01N 23/044 2018.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
02by transmitting the radiation through the material
04and forming images of the material
044using laminography or tomosynthesis
G01N 23/18 2018.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
02by transmitting the radiation through the material
06and measuring the absorption
18Investigating the presence of defects or foreign matter
CPC
A61B 6/12
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
12Devices for detecting or locating foreign bodies
A61B 6/4241
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
42with arrangements for detecting radiation specially adapted for radiation diagnosis
4208characterised by using a particular type of detector
4241using energy resolving detectors, e.g. photon counting
A61B 6/463
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
46with special arrangements for interfacing with the operator or the patient
461Displaying means of special interest
463characterised by displaying multiple images or images and diagnostic data on one display
A61B 6/466
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
46with special arrangements for interfacing with the operator or the patient
461Displaying means of special interest
466adapted to display 3D data
A61B 6/469
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
46with special arrangements for interfacing with the operator or the patient
467characterised by special input means
469for selecting a region of interest [ROI]
A61B 6/482
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
48Diagnostic techniques
482involving multiple energy imaging
Applicants
  • 株式会社ジョブ JOB CORPORATION [JP]/[JP]
Inventors
  • 山河 勉 YAMAKAWA, Tsutomu
  • 山本 修一郎 YAMAMOTO, Shuichiro
  • 岡田 雅宏 OKADA, Masahiro
Agents
  • 清流国際特許業務法人 SEIRYU Patent Professional Corporation
  • 昼間 孝良 HIRUMA, Takayoshi
  • 境澤 正夫 SAKAIZAWA, Masao
Priority Data
2017-09760316.05.2017JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) DATA PROCESSING DEVICE AND DATA PROCESSING METHOD FOR X-RAY INSPECTION, AND X-RAY INSPECTING DEVICE WITH SAID DEVICE MOUNTED THEREIN
(FR) DISPOSITIF DE TRAITEMENT DE DONNÉES ET PROCÉDÉ DE TRAITEMENT DE DONNÉES POUR EXAMEN RADIOLOGIQUE ET DISPOSITIF D'EXAMEN RADIOLOGIQUE COMPORTANT LEDIT DISPOSITIF MONTÉ EN SON SEIN
(JA) X線検査におけるデータ処理装置及びデータ処理方法、並びに、その装置を搭載したX線検査装置
Abstract
(EN) The objective of the present invention is to enhance an interface function for identification processing, with which the result of an identification of the type or the properties of a substance being X-ray inspected does not depend on the observation direction. In a data processing device (12), image data are calculated on the basis of a photon count value of X-rays transmitted through a target object. For example, X-ray attenuation information is set individually for n (where n is a positive integer at least equal to 2) energy regions of the X-ray and for each pixel, on the basis of the image data. The attenuation information includes i) unique information which is represented as a vector quantity in coordinates having the same number n of dimensions as the number of the n energy regions, and which depends uniquely on the type or the properties of the target object, and ii) accompanying information which accompanies the unique information and which depends on the length of a path along which the X-rays pass though the target object. Only unique information which does not depend on the accompanying information is generated from the attenuation information. A scatter plot for mapping a scatter plot corresponding to the unique information onto the n-dimensional coordinates or onto coordinates having a number of dimensions less than n dimensions is calculated.
(FR) L'objet de la présente invention est d'améliorer une fonction d'interface pour un traitement d'identification, au moyen duquel le résultat d'une identification du type ou des propriétés d'une substance faisant l'objet d'un examen radiologique ne dépend pas de la direction d'observation. Dans un dispositif de traitement de données (12), des données d'image sont calculées sur la base d'une valeur de comptage de photons de rayons X transmis à travers un objet cible. Par exemple, des informations d'atténuation de rayons X sont établies individuellement pour n (n étant un nombre entier positif supérieur ou égal à 2) régions d'énergie du rayon X et pour chaque pixel, sur la base des données d'image. Les informations d'atténuation comprennent i) des informations uniques qui sont représentées sous la forme d'une quantité vectorielle dans des coordonnées ayant le même nombre n de dimensions que le nombre des n régions d'énergie, et qui dépendent uniquement du type ou des propriétés de l'objet cible, et ii) des informations d'accompagnement qui accompagnent les informations uniques et qui dépendent de la longueur d'un trajet le long duquel les rayons X passent à travers l'objet cible. Seules les informations uniques qui ne dépendent pas des informations d'accompagnement sont générées à partir des informations d'atténuation. Un diagramme de diffusion permettant de mapper un diagramme de diffusion correspondant aux informations uniques sur les coordonnées à n dimensions ou sur des coordonnées ayant un nombre de dimensions inférieur à n dimensions est calculé.
(JA) X線検査対象の物質の種類や性状を同定した結果を、観察方向に依存せず、且つ、同定処理のためのインターフェース機能を充実させる。データ処理装置(12)において、対象物の透過X線の光子計数値に基づいて画像データが演算される。この画像データに基づき、例えば、X線のn個(nは2以上の正の整数)のエネルギー領域の各別に、且つ、画素毎に、当該X線の減弱情報がされる。この減弱情報には、i)前記n個のエネルギー領域の数と同じn次元数の座標上のベクトル量として表わされ且つ対象物の種類又は性状に固有的に依存する固有情報と、ii)当該固有情報に付随し且つ前記X線が当該対象物を通過するパスの長さに依存する付随情報とが含まれる。この減弱情報から、付随情報に依存しない固有情報のみが生成される。この固有情報に応じた散布点が、前記n次元の座標上、又は当該n次元よりも少ない次元数の座標上にマッピングするための散布点が演算される。
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