公开(公告)号：US09128200B2

公开(公告)日：2015-09-08

申请号：US12906437

申请日：2010-10-18

Applicant: Matthias Muenster ,  Joerg Nittikowski ,  Pia Dreiseitel ,  Andreas Mader ,  Rainer Heinkel ,  Thomas Ries ,  Dirk Naumann ,  Uwe Siedenburg

Inventor： Matthias Muenster ,  Joerg Nittikowski ,  Pia Dreiseitel ,  Andreas Mader ,  Rainer Heinkel ,  Thomas Ries ,  Dirk Naumann ,  Uwe Siedenburg

IPC: G01V5/00 ,  G01N23/04 ,  G01N23/087 ,  G01N23/10

CPC classification number: G01V5/0058 ,  G01N23/04 ,  G01N23/087 ,  G01N23/10 ,  G01N2223/401 ,  G01N2223/633 ,  G01N2223/639 ,  G01V5/0016

Abstract: A method and apparatus is provided for detection of a particular material in an object, in particular in an item of luggage, by means of electromagnetic radiation in which the intensities of non-absorbed radiation from at least three radiation planes are measured and evaluated in associated detector apparatus, wherein an image is produced, initially from the intensities of the non-absorbed radiation, and then if single regions of low complexity are found which are characterized by approximately constant intensities, an estimation of the attenuation coefficient s performed and a material detection is carried out in the region according to an algorithm which calculates a three-dimensional reconstruction from different views.

Abstract translation: 提供了一种方法和装置，用于通过电磁辐射来检测物体中的特定材料，特别是在行李物品中，其中来自至少三个辐射面的未被吸收的辐射的强度被测量并且以相关联的方式进行评估 检测器装置，其中最初从未被吸收的辐射的强度产生图像，然后如果发现具有近似恒定强度特征的单个低复杂度区域，则执行衰减系数s的估计和材料检测 根据从不同视图计算三维重建的算法在该区域中进行。

公开(公告)号：US08989346B2

公开(公告)日：2015-03-24

申请号：US13722994

申请日：2012-12-20

Applicant: FUJIFILM Corporation

Inventor： Kenji Yoshikawa

IPC: A61B6/00 ,  G01N23/087

CPC classification number: A61B6/505 ,  A61B6/405 ,  A61B6/482 ,  A61B6/5217 ,  A61B6/583

Abstract: From radiation images obtained by driving radiation tube with a plurality of tube voltages, including a normal tube voltage, a density gradient with respect to at least two sections of a reference substance having different radiation transmission characteristics is obtained for each of the plurality of tube voltages prior to obtaining a bone mineral density. If a radiation image captured for obtaining a bone mineral density is determined to have been captured under a tube voltage other than the normal tube voltage, an image signal representing the image and/or a bone mineral density analysis result is corrected so as to correspond to that which should have been obtained if the image had been captured under the normal tube voltage based on the relationship between the density gradient in the image and the density gradient in the radiation image captured under the normal tube voltage.

Abstract translation: 从通过驱动包括正常管电压的多个管电压的辐射管获得的辐射图像，对于多个管电压中的每一个获得相对于具有不同辐射透射特性的参考物质的至少两个部分的密度梯度 在获得骨矿物质密度之前。 如果拍摄用于获得骨矿物质密度的放射线图像被确定为在正常管电压以外的管电压下捕获，则校正表示图像和/或骨矿物质密度分析结果的图像信号，以对应于 如果图像已经在正常管电压下捕获，则该图像将基于图像中的浓度梯度与在正常管电压下捕获的辐射图像中的密度梯度之间的关系而获得。

公开(公告)号：US08953741B2

公开(公告)日：2015-02-10

申请号：US13656177

申请日：2012-10-19

Applicant: Tsinghua University

Inventor： Hongchang Yi ,  Lin Qian

IPC: G01N23/087 ,  G01N23/12 ,  G01N23/14 ,  G01N23/083 ,  G01N33/22

CPC classification number: G01N23/083 ,  G01N33/222 ,  G01N2223/617 ,  G01N2223/643

Abstract: A system and a method for measuring an ash content and a calorific value of a coal are provided. The system comprises: at least two dual-energy gamma ray transmission measuring devices and a computing device, in which at least one first dual-energy gamma ray transmission measuring device is disposed before an inlet of a coal combustion apparatus for measuring a first attenuation coefficient of a gamma ray from the at least one first dual-energy gamma ray transmission measuring device with regard to the coal; at least one second dual-energy gamma ray transmission measuring device is disposed after an outlet of the coal combustion apparatus for measuring a second attenuation coefficient of a gamma ray from the at least one second dual-energy gamma ray transmission measuring device with regard to a coal ash; and the computing device is configured to compute the ash content and the calorific value of the coal.

Abstract translation: 提供了一种用于测量煤的灰分含量和发热量的系统和方法。 该系统包括：至少两个双能γ射线透射测量装置和计算装置，其中至少一个第一双能量γ射线透射测量装置设置在用于测量第一衰减系数的煤燃烧装置的入口之前 来自所述至少一个第一双能量γ射线传输测量装置的关于煤的γ射线; 至少一个第二双能γ射线透射测量装置设置在煤燃烧装置的出口之后，用于测量来自至少一个第二双能γ射线透射测量装置的γ射线的第二衰减系数 煤灰; 并且计算装置被配置为计算煤的灰分含量和热值。

公开(公告)号：US08929508B1

公开(公告)日：2015-01-06

申请号：US13448856

申请日：2012-04-17

Applicant: Robert E. Alvarez

Inventor： Robert E. Alvarez

IPC: G01N23/00 ,  G01D18/00 ,  G01N23/087

CPC classification number: G01N23/087 ,  G01N2223/423

Abstract: An apparatus or method for providing information about an object from x-ray radiation transmitted through the object. An embodiment comprises an x-ray source (10) positioned on one side of an object (50) an x-ray detector (102) positioned on the opposite side, and means for computing two or more information signals, which are substantially the line integrals of the basis set coefficients of the x-ray attenuation coefficient from the x-ray photons transmitted through said object at three or more regions of the x-ray energy spectrum. In one embodiment the means for computing the two or more information signals comprises a linear maximum likelihood estimator (122), a correction processor (142) to compute a correction to the linear maximum likelihood estimate (132), and an adder (152) to add the estimate and the correction to produce the two or more information signals (154).

Abstract translation: 一种用于从通过物体传输的X射线辐射提供关于物体的信息的装置或方法。 实施例包括位于物体（50）的位于相对侧的X射线检测器（102）的一侧上的x射线源（10），以及用于计算两条或更多条信息信号的装置，其基本上为线 在X射线能谱的三个或更多个区域，通过所述物体透射的x射线光子的x射线衰减系数的基准系数的积分。 在一个实施例中，用于计算两个或多个信息信号的装置包括线性最大似然估计器（122），用于计算对线性最大似然估计（132）的校正的校正处理器（142），以及加法器 添加估计和校正以产生两个或更多个信息信号（154）。

公开(公告)号：US07809103B2

公开(公告)日：2010-10-05

申请号：US11756027

申请日：2007-05-31

Applicant: Yanfeng Du ,  Forrest Frank Hopkins ,  Joseph Bendahan

Inventor： Yanfeng Du ,  Forrest Frank Hopkins ,  Joseph Bendahan

IPC: G01N23/087

CPC classification number: G01N23/09

Abstract: Disclosed herein is a method for detecting high atomic number elements in an article by using radiation having two different energies. The detecting of high atomic number elements can be accomplished by using an algorithm, curve fitting or using a data table. Disclosed herein too is a radiation system that uses the aforementioned method for detecting high atomic number elements.

Abstract translation: 本文公开了一种通过使用具有两种不同能量的辐射来检测物品中的高原子数元素的方法。 高原子数元素的检测可以通过使用算法，曲线拟合或使用数据表来完成。 这里也公开了使用上述检测高原子数元素的方法的辐射系统。

公开(公告)号：US07746976B2

公开(公告)日：2010-06-29

申请号：US11614199

申请日：2006-12-21

Applicant: Zhimin Huo ,  Chang-Ying J. Yang ,  Mark S. Purdum

Inventor： Zhimin Huo ,  Chang-Ying J. Yang ,  Mark S. Purdum

IPC: G01N23/087

CPC classification number: A61B6/4233 ,  A61B6/502 ,  A61B6/505 ,  A61B6/583 ,  G21K1/10 ,  H01J2235/081

Abstract: A method and system for determining the bone mineral density of a body extremity. An image of a body extremity is acquired using a mammography x-ray system whereby a bone mineral density can be performed on the image. The system for determining the bone mineral density of a body extremity includes: a support for supporting the body extremity; a detector for capturing an image of the body extremity; and an x-ray source adapted to project an x-ray beam through the body extremity toward the detector, the x-ray source having a voltage of no more than about 45 kVp and having a target/filter combination of rhodium/rhodium, molybdenum/molybdenum, molybdenum/rhodium, or tungsten/rhodium. An attenuation filter separate from the target/filter combination may be provided between the source and the body extremity, between the body extremity and the detector, or both.

Abstract translation: 一种用于确定身体肢体的骨矿物质密度的方法和系统。 使用乳房X射线照相系统获得身体末端的图像，由此可以对图像执行骨矿物质密度。 用于确定身体末端骨矿物质密度的系统包括：用于支撑身体末端的支撑体; 用于捕获身体肢体的图像的检测器; 以及X射线源，其适于将X射线束通过身体末端投射到检测器，X射线源具有不超过约45kVp的电压并且具有铑/铑，钼的靶/过滤器组合 /钼，钼/铑或钨/铑。 与目标/滤波器组合分离的衰减滤波器可以在源极和身体末端之间，身体末端和检测器之间，或两者之间提供。

公开(公告)号：US20080267346A1

公开(公告)日：2008-10-30

申请号：US11913326

申请日：2006-04-28

Applicant: Tiemen Poorter

Inventor： Tiemen Poorter

IPC: A61B6/00 ,  G01N23/087

CPC classification number: A61B6/542 ,  A61B6/12

Abstract: The present invention relates to an X-ray imaging apparatus and a corresponding X-ray imaging method, in particular for X-ray fluoroscopy and for an application where a characteristic feature shall be extracted from acquired X-ray images. In order to reduce the total X-ray dose to which a patient is exposed for acquiring a series of X-ray images and, nevertheless, to allow the extraction of small characteristic features with high certainty, an X-ray imaging apparatus is proposed comprising: an imaging unit comprising an X-ray source (2) and an X-ray detector (4) for forming a series of X-ray images of an object (P) including a characteristic feature, a feature extraction unit (6) for extracting said characteristic feature from said series of X-ray images, and a control unit (7) for controlling the X-ray dose to which the object (P) is exposed for forming said series of X-ray images by controlling said X-ray source (2) such that the X-ray dose per X-ray image is larger for a first number of images than for the remaining number of images of said series.

Abstract translation: 本发明涉及一种X射线成像装置和相应的X射线成像方法，特别涉及用于X射线荧光透视和从获得的X射线图像中提取特征的应用。 为了减少患者暴露于用于获取一系列X射线图像的总X射线剂量，然而，为了允许高度确定地提取小特征特征，提出了一种X射线成像装置，其包括 ：包括用于形成包括特征特征的物体（P）的一系列X射线图像的X射线源（2）和X射线检测器（4）的成像单元，特征提取单元（6），用于 从所述一系列X射线图像提取所述特征特征;以及控制单元（7），用于通过控制所述X射线图像来控制所述物体（P）暴露以形成所述一系列X射线图像的X射线剂量， （2），使得每个X射线图像的X射线剂量对于第一数量的图像比对于所述系列的剩余图像数量更大。

公开(公告)号：US20080187091A1

公开(公告)日：2008-08-07

申请号：US11672137

申请日：2007-02-07

Applicant: Samit Kumar Basu ,  Bruno Kristiaan Bernard DeMan

Inventor： Samit Kumar Basu ,  Bruno Kristiaan Bernard DeMan

IPC: G01N23/087 ,  G06K9/00

CPC classification number: G01N23/046 ,  G01N2223/419

Abstract: A new method extends iterated coordinate descent (“ICD”)—an optimization method employed in some statistical reconstruction algorithms—to handle material decomposition (“MD”) for energy discriminating computed tomography (“EDCT”) acquisitions.

Abstract translation: 一种新的方法扩展了迭代坐标下降（“ICD”） - 在一些统计重建算法中采用的优化方法来处理能量鉴别计算机断层扫描（“EDCT”）采集的材料分解（“MD”）。

公开(公告)号：US20080013682A1

公开(公告)日：2008-01-17

申请号：US11773282

申请日：2007-07-03

Applicant: Yuko SHINDEN

Inventor： Yuko SHINDEN

IPC: G01N23/087

CPC classification number: A61B6/00 ,  A61B5/4514 ,  A61B6/4021 ,  A61B6/405 ,  A61B6/482 ,  A61B6/484 ,  A61B6/583

Abstract: Image data of a phase contrast image corresponding to a high-energy zone and image of a phase contrast image corresponding to a low-energy zone are generated by a radiation image photographing apparatus and the image data of the generated images is displayed on an image displaying apparatus.

Abstract translation: 通过放射线图像拍摄装置生成对应于高能量区域的相位对应图像的图像数据和对应于低能量区域的相位图像的图像，并且生成的图像的图像数据被显示在图像显示 仪器。

公开(公告)号：US20070297561A1

公开(公告)日：2007-12-27

申请号：US11719959

申请日：2005-11-24

Applicant: Marcel Breeuwer ,  Silvia Delgado Olabarriaga

Inventor： Marcel Breeuwer ,  Silvia Delgado Olabarriaga

IPC: G01N23/087 ,  G06T17/00

CPC classification number: G06T7/149 ,  G06T7/12 ,  G06T2207/10088 ,  G06T2207/20116 ,  G06T2207/30016 ,  G06T2207/30101

Abstract: A method and Computer Program Product for segmenting a three-dimensional digital representation of an anatomical structure, in which a temporary replacement of intensity values is performed in a specified volume with a substitute intensity value corresponding to healthy anatomical structure. The segmentation of an outer boundary of the blood vessel is performed, before the original intensity values are restored. After restoration of the original intensity values, a thorough segmentation of the specified volume and any lesions contained therein is performed.

Abstract translation: 一种用于分割解剖结构的三维数字表示的方法和计算机程序产品，其中在具有对应于健康解剖结构的替代强度值的指定体积中执行强度值的临时替换。 在原始强度值恢复之前执行血管外边界的分割。 在恢复原始强度值之后，执行指定体积和其中包含的任何损伤的彻底分割。