公开(公告)号：US11099141B2

公开(公告)日：2021-08-24

申请号：US16627451

申请日：2018-10-26

申请人： JOB CORPORATION

发明人： Tsutomu Yamakawa ,  Shuichiro Yamamoto ,  Masahiro Okada

IPC分类号： G01N23/00 ,  G01N23/087 ,  A61B6/00 ,  G01N23/04 ,  G01T1/36

摘要： A higher accuracy beam hardening correction with a low calculation load is performed with objects whose elements have a wider range of effective atomic numbers Zeff, thereby contributing to presentation of more quantitative X-ray images. Of two or more X-ray energy bins, two X-ray bins are selected to normalize X-ray attenuation amount μt in those bins such that one or more normalized X-ray attenuation amounts are obtained at each pixel areas. From reference information indicating a theoretical relationship of correspondence between the normalized X-ray attenuation amounts and effective atomic numbers of elements, one ore more effective atomic numbers are estimated every pixel area. Among the one or more effective atomic numbers (ZHigh, ZLow) and an effective atomic number (Zm) preset for the beam hardening correction, two or more atomic numbers are subjected to their equality determination.

公开(公告)号：US20210199592A1

公开(公告)日：2021-07-01

申请号：US17199090

申请日：2021-03-11

申请人： SOUTHERN INNOVATION INTERNATIONAL PTY LTD

发明人： Paul Scoullar ,  Christopher McLean ,  Shane Michael Tonissen ,  Syed Khusro Saleem

IPC分类号： G01N21/85 ,  G01N23/087 ,  E21B49/00 ,  G01N21/25 ,  G01N21/93

摘要： A material characterization system and method for characterizing a stream of material emanating from a material identification, exploration, extraction or processing activity, the system including a source of incident radiation configured to irradiate the stream of material in an irradiation region, one or more detectors adapted to detect radiation emanating from within or passing through the stream of material as a result of the irradiation by the incident radiation and thereby produce a detection signal, and one or more digital processors configured to process the detection signal to characterise the stream of material, wherein the source of incident radiation and the one or more detectors are adapted to be disposed relative to the stream of material so as to irradiate the stream of material and detect the radiation emanating from within or passing through the stream as the stream passes through the irradiation region.

公开(公告)号：US20210116397A1

公开(公告)日：2021-04-22

申请号：US17137039

申请日：2020-12-29

申请人： Colgate-Palmolive Company ,  Northwestern University

发明人： Michael FITZGERALD ,  Iraklis PAPPAS ,  Jean-Francois GAILLARD ,  Marco ALSINA CORVALAN

IPC分类号： G01N23/083 ,  G01N21/89 ,  G01N21/94 ,  G01N23/087

摘要： The disclosure contains a method of quantifying and/or evaluating metal ions in a dentifrice, wherein the method comprises subjecting the dentifrice to X-ray absorption spectroscopy (XAS), and wherein the XAS is used to measure and/or evaluate the metal ions in the dentifrice. Also disclosed are methods of selecting and screening for dentifrices based upon the evaluation and quantification of their metal ion content.

公开(公告)号：US20210033545A1

公开(公告)日：2021-02-04

申请号：US17065858

申请日：2020-10-08

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

发明人： Christopher Bowdon ,  Paul David Featonby ,  James Stephen Howstan ,  Peter Jackson ,  Kenneth James ,  Emanuele Ronchi

IPC分类号： G01N23/18 ,  G01V5/00 ,  G01T1/164 ,  G01N23/06 ,  G01N23/087 ,  G01N23/04 ,  G01N23/083 ,  G01N23/046 ,  G01N9/24 ,  G01T1/20 ,  G21K1/02

摘要： The invention discloses a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam.

公开(公告)号：US10859516B2

公开(公告)日：2020-12-08

申请号：US16334350

申请日：2017-09-20

申请人： System Square Inc.

发明人： Noriaki Ikeda ,  Sachihiro Nakagawa

IPC分类号： G01N23/04 ,  G01N23/087 ,  G01T1/24 ,  G01N23/18

摘要： An X-ray inspection apparatus includes: an X-ray emission unit for emitting an X-ray to an object; an X-ray detection unit for detecting each X-ray photon transmitted through the object by discriminating energy possessed by the photon into one or more energy region(s) in accordance with a predetermined threshold level; a storage unit for storing the object and the associated threshold level; a threshold level setting unit for referring to the storage unit to keep a threshold level for the object specified by inputted information so that the X-ray detection unit can refer to the threshold level as the predetermined threshold level; and an inspection unit for inspecting the object based on a number of photons or an amount corresponding to the number of the photons detected by the X-ray detection unit for each of the one or more energy region(s).

公开(公告)号：US10859515B2

公开(公告)日：2020-12-08

申请号：US15465937

申请日：2017-03-22

申请人： Carl Zeiss X-ray Microscopy, Inc.

发明人： Zhifeng Huang ,  Thomas A. Case ,  Lourens B. Steger

IPC分类号： G01N23/087 ,  G01N23/046

摘要： A spectrum measurement and estimation method for tomographic reconstruction, beam hardening correction, dual-energy CT and system diagnosis, etc., comprises determining the spectra for combinations of source acceleration voltage, pre-filters and/or detectors and after measuring the transmission values of several pre-filters, calculating corrected spectra for the combinations of the source acceleration voltage, pre-filters and/or detectors.

公开(公告)号：US10795047B2

公开(公告)日：2020-10-06

申请号：US16229860

申请日：2018-12-21

申请人： VOTI INC.

发明人： Emmanuel St-Aubin ,  Philippe Desjeans-Gauthier ,  Ola El Bakry ,  Simon Archambault ,  William Awad

IPC分类号： G06K9/00 ,  G01V5/00 ,  G01N23/087 ,  G01N23/04 ,  G01N23/083 ,  G01N23/10 ,  G06T11/00 ,  H04N5/32 ,  G06T7/194 ,  G06T7/70 ,  G01N23/20 ,  G06T7/00 ,  G06T7/60 ,  G06T7/50 ,  G06T7/11

摘要： There is provided a method for assigning an attribute to an unknown object overlapping with a predetermined background object. The unknown object is scanned overlapping with the background object within an x-ray scanning device to obtain a plurality of dual-energy attenuation images having attenuation information representing the background object and an overlap region wherein the background object and the unknown object overlap. The dual-energy attenuation images are decomposed into reference material equivalent path length images. The reference material equivalent path lengths representing the background object in the overlap region are determined and eliminated from the overlap region to provide reference material equivalent path length images having first and second reference material equivalent path lengths through only the unknown object.

公开(公告)号：US20200271597A1

公开(公告)日：2020-08-27

申请号：US16588024

申请日：2019-09-30

申请人： Photo Diagnostic Systems,Inc,

发明人： William A. Worstell ,  Matthew Len Keeler ,  Olof Johnson ,  Bernard M. Gordon

IPC分类号： G01N23/046 ,  G01N23/087 ,  A61B6/03 ,  A61B6/00 ,  G21K1/10 ,  G01V5/00

摘要： An improved dual energy CT imaging system for providing improved imaging and improved material identification.

公开(公告)号：US20200158909A1

公开(公告)日：2020-05-21

申请号：US16458251

申请日：2019-07-01

申请人： Rapiscan Systems, Inc.

发明人： Edward James Morton

IPC分类号： G01V5/00 ,  G01N23/087

摘要： A dual energy based X-ray scanning system has a linear detector array with high and low energy detectors. A signal processing method is employed that accounts for varying angles at which the transmitted X-rays impinge upon the detectors and also the varying order in which the transmitted X-rays pass through the high and low energy detectors. This yields both high resolution in the generated images and better penetration performance.

公开(公告)号：US20200033273A1

公开(公告)日：2020-01-30

申请号：US15929150

申请日：2019-10-01

申请人： Canon Medical Systems Corporation

发明人： Kenta Moriyasu ,  Taichiro Shiodera ,  Shuhei Nitta ,  Tomoyuki Takeguchi ,  Hidenori Takeshima ,  Toshiyuki Ono ,  Takashi Ida ,  Hiroaki Nakai

IPC分类号： G01N23/087 ,  A61B6/03 ,  A61B6/00 ,  G01N23/046 ,  G01T1/29

摘要： A photon counting X-ray CT apparatus according to an embodiment includes: data acquiring circuitry, and processing circuitry. The data acquiring circuitry is configured to allocate energy measured by signals output from a photon counting detector in response to incidence of X-ray photons to any of a plurality of first energy bins so as to acquire a first data group as count data of each of the first energy bins. The processing circuitry is configured to determine a plurality of second energy bins obtained by grouping the first energy bins in accordance with a decomposition target material that is a material to be decomposed in a imaging region, allocate the first data group to any of the second energy bins so as to generate a second data group, and use the second data group to generate an image representing a distribution of the decomposition target material.