公开(公告)号：US10948556B2

公开(公告)日：2021-03-16

申请号：US16205044

申请日：2018-11-29

申请人： Electronics and Telecommunications Research Institute

发明人： Hyo-Bong Hong ,  Jae-Chan Jeong ,  Seung-Min Choi ,  Chang-Beom Kim

IPC分类号： G01R33/36 ,  G01R33/48 ,  G01R33/381 ,  G01N27/72 ,  A61N2/00 ,  H05G1/60 ,  G01R33/12

摘要： Disclosed herein are a method for modifying a magnetic field using magnetic nanoparticles and an apparatus therefor. The method for modifying a magnetic field includes applying current to a single solenoid coil or to two parallel solenoid coils, measuring a strength of a magnetic field generated by the current at a preset target location using a measurement sensor, and controlling the strength of the magnetic field based on a concentration of a magnetic nanoparticle sample mounted in the single solenoid coil or the two solenoid coils so that the strength of the magnetic field matches a preset target value.

公开(公告)号：US10159455B2

公开(公告)日：2018-12-25

申请号：US14872348

申请日：2015-10-01

申请人： Toshiba Medical Systems Corporation

发明人： Makoto Takanaka ,  Kunio Shiraishi ,  Shinsuke Ooie ,  Kentarou Nishikawa

IPC分类号： A61B6/00 ,  H05G1/08 ,  H05G1/30 ,  H05G1/32 ,  H05G1/34 ,  H05G1/42 ,  H05G1/44 ,  H05G1/58 ,  H05G1/60 ,  H01J35/04

摘要： An X-ray diagnosis apparatus according to an embodiment includes an X-ray tube, judging circuitry, and grid controlling circuitry. The X-ray tube is configured to radiate X-rays. The judging circuitry is configured to judge whether a voltage should be applied to a grid of the X-ray tube or not, in accordance with a radiation condition. The grid controlling circuitry is configured to apply the voltage to the grid, if the judging circuitry has determined that the voltage should be applied.

公开(公告)号：US20180168529A1

公开(公告)日：2018-06-21

申请号：US15825002

申请日：2017-11-28

申请人： Siemens Healthcare GmbH

发明人： John Christopher Rauch ,  Martin Trini

IPC分类号： A61B6/00 ,  A61K49/04 ,  A61B6/03 ,  H05G1/60 ,  H05G1/64

CPC分类号： A61B6/481 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/463 ,  A61B6/486 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5235 ,  A61B6/541 ,  A61K49/0433 ,  H05G1/60 ,  H05G1/64

摘要： A system and method includes detection of a trigger event, automatic injection, in response to detecting the trigger event, of a bolus of contrast medium into a patient volume after expiration of a predetermined injection delay period, automatic acquisition, in response to detecting the trigger event, of a plurality of images after expiration of a predetermined imaging delay period, where two or more of the plurality of images comprise an image of the bolus at respective different locations within vasculature of the patient volume, generation of a composite image based on the plurality of images, the composite image including a representation of the vasculature of the patient volume, and display of the composite image.

公开(公告)号：US09715744B2

公开(公告)日：2017-07-25

申请号：US14567557

申请日：2014-12-11

申请人： GE Medical Systems Global Technology Co. LLC

发明人： Dan Liu ,  Xueli Wang ,  Yanling Qu

IPC分类号： G06K9/00 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60 ,  G01D18/00 ,  G06T11/00 ,  G01N23/04 ,  A61B6/03

CPC分类号： G06T11/005 ,  A61B6/032 ,  A61B6/5205 ,  A61B6/5258 ,  A61B6/583 ,  G01N23/046 ,  G06T2207/10081

摘要： The present invention relates to a method and device of obtaining a beam hardening correction coefficient for carrying out beam hardening correction on computed tomography data. The method includes the steps of: firstly, acquiring an original reconstructed image and an original sinogram of an object of a particular size; secondly, obtaining an error-reduced sinogram after processing the original reconstructed image by error reduction; thirdly, sampling and calculating an average value of the original sinogram and an average value of the error-reduced sinogram; fourthly, optimizing the original sinogram according to the error-reduced sinogram to determine a coefficient vector of optimization function for the object of the particular size; and finally fitting the coefficient vector of the optimization function of the original sinogram to obtain the beam hardening correction coefficient for the object of the particular size.

公开(公告)号：US09532753B2

公开(公告)日：2017-01-03

申请号：US14433837

申请日：2013-10-04

申请人： Vatech Co., Ltd. ,  Vatech Ewoo Holdings Co., Ltd.

发明人： Tae Woo Kim ,  Sung Il Choi

IPC分类号： A61B6/00 ,  G01N23/00 ,  H05G1/60 ,  A61B6/06 ,  A61B6/14 ,  A61B6/03

CPC分类号： A61B6/06 ,  A61B6/032 ,  A61B6/035 ,  A61B6/14 ,  A61B6/4441 ,  A61B6/4452 ,  A61B6/501

摘要： The purpose of the present invention is to provide an X-ray imaging device capable of obtaining more diversified X-ray image information. To this end, the present invention comprises: an X-ray generation device for generating an X-ray; an X-ray detection device for detecting the X-ray which is generated in the X-ray generation device and penetrates the subject; and a collimator arranged between the X-ray generation device and the X-ray detection device, wherein the X-ray detection device and/or the collimator provides an X-ray imaging device configured to rotate relative to the X-ray generation device. Thus, since it is possible to adjust an X-ray detection area if necessary, the visual field of the imaging device can be adjusted such that diversified X-ray image information can be obtained.

摘要翻译： 本发明的目的是提供能够获得更多样化的X射线图像信息的X射线成像装置。 为此，本发明包括：用于产生X射线的X射线产生装置; X射线检测装置，用于检测在X射线产生装置中产生并穿透被检体的X射线; 以及配置在所述X射线产生装置与所述X射线检测装置之间的准直仪，其中所述X射线检测装置和/或所述准直仪提供构造成相对于所述X射线产生装置旋转的X射线摄像装置。 因此，由于可以根据需要调整X射线检测区域，所以可以调整摄像装置的视野，从而能够获得多样化的X射线图像信息。

公开(公告)号：US09462983B2

公开(公告)日：2016-10-11

申请号：US14603030

申请日：2015-01-22

申请人： Toshiba Medical Systems Corporation

发明人： Yuexing Zhang ,  Xiaolan Wang

IPC分类号： A61B6/03 ,  H05G1/30 ,  H05G1/60 ,  H05G1/64 ,  A61B6/00

CPC分类号： A61B6/4452 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4241 ,  A61B6/4266 ,  A61B6/4275 ,  A61B6/482 ,  A61B6/488 ,  A61B6/5205 ,  A61B6/5258 ,  G01T1/2985

摘要： A computed-tomography (CT) apparatus that includes a CT scanner including an X-ray source, a plurality of photon-counting detectors (PCDs) arranged in a fixed detector ring to capture incident X-ray photons emitted from the X-ray source, and control circuitry configured to move at least one PCD of the plurality of PCDs, from a first position to a second position, in response to receiving an instruction to perform a scanogram scan of an object.

摘要翻译： 一种计算机断层摄影（CT）装置，包括包括X射线源的CT扫描仪，布置在固定检测器环中的多个光子计数检测器（PCD），以捕获从X射线源发射的入射X射线光子 以及控制电路，被配置为响应于接收到执行对象的扫描图扫描的指令，将多个PCD中的至少一个PCD从第一位置移动到第二位置。

公开(公告)号：US09436799B2

公开(公告)日：2016-09-06

申请号：US13561508

申请日：2012-07-30

申请人： Daniel McCoy ,  Vinod Palathinkara

发明人： Daniel McCoy ,  Vinod Palathinkara

IPC分类号： G06K9/00 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60 ,  G01N23/04 ,  G06F19/00 ,  G06T11/00 ,  A61B5/05 ,  G06Q10/00 ,  G06Q50/00

CPC分类号： G06F19/321 ,  G06F19/00 ,  G06F19/328 ,  G06T11/003

摘要： A system is provided including a processing unit including an input module, a processing module, and an output module. The processing unit is located at a first location that is remotely located from a scanning location at which a remote medical scanning system is located. The input module is configured to communicate with the remote medical scanning system to receive scanning data obtained during a scan performed by the remote medical scanning system, the scanning data corresponding to an object scanned by the remote medical scanning system. The processing module is configured to use the scanning data to reconstruct an image representing the object. The output module is configured to provide access to the image reconstructed by the processing module to at least one of the remote medical scanning system or a requester located remotely from the first location.

摘要翻译： 提供一种包括处理单元的系统，该处理单元包括输入模块，处理模块和输出模块。 处理单元位于远离远程医疗扫描系统所在的扫描位置的第一位置。 输入模块被配置为与远程医疗扫描系统通信以接收由远程医疗扫描系统执行的扫描期间获得的扫描数据，扫描数据对应于由远程医疗扫描系统扫描的对象。 处理模块被配置为使用扫描数据来重建表示对象的图像。 输出模块被配置为提供对由处理模块重建的图像对远离第一位置的远程医疗扫描系统或请求者中的至少一个的访问。

公开(公告)号：US08804900B2

公开(公告)日：2014-08-12

申请号：US13301875

申请日：2011-11-22

申请人： Ute Feuerlein ,  Jan Freund ,  Sebastian Gehrsitz

发明人： Ute Feuerlein ,  Jan Freund ,  Sebastian Gehrsitz

IPC分类号： H05G1/60 ,  H05G1/64

CPC分类号： A61B6/107 ,  A61B6/542

摘要： In a method and x-ray device to assist in the reduction of the dose of x-ray radiation applied to the patient in the acquisition of at least one x-ray projection of the patient, a selected protocol is entered by a user into an x-ray device, the selected protocol being defined for the acquisition of the at least one x-ray projection and including a measure or measures for reduction of the dose of x-ray radiation to be applied to the patient in the acquisition of the at least one x-ray projection. The does reduction measure or measures in the selected protocol are automatically compared in a processor of the x-ray device, with the dose reduction measures that are installed at the x-ray device for reduction of the dose of x-ray radiation to be applied to a patient in the acquisition of the at least one x-ray projection. If the result of the comparison indicates a discrepancy between the dose reduction measure or measures in the selected, defined protocol and those installed in the x-ray device, at least one such measure installed at the x-ray device is visualized as a measure that can be set or activated by the user, that is not yet included in the selected protocol.

摘要翻译： 在方法和x射线设备中，在获取患者的至少一个X射线投影时，有助于减少施加到患者的X射线辐射的剂量，所选择的协议由用户输入到 所选择的协议被定义用于获取所述至少一个X射线投影，并且包括用于在获取所述至少一个x射线投影的时候减少要应用于所述患者的x射线辐射的剂量的措施或措施 至少一个x射线投影。 在x射线装置的处理器中自动比较所选择的协议中的减少措施或措施，以及安装在x射线装置处的用于减少要施加的x射线辐射剂量的剂量减少措施 在获取所述至少一个X射线投影时向患者施加。 如果比较结果表明剂量减少措施或所选定义方案中的措施与安装在x射线装置中的那些之间存在差异，那么安装在x射线装置上的至少一种这种措施可视化为 可以由用户设置或激活，即尚未包括在所选择的协议中。

公开(公告)号：US08724889B2

公开(公告)日：2014-05-13

申请号：US13140761

申请日：2011-05-11

申请人： Liang Li ,  Zhiqiang Chen ,  Li Zhang ,  Kejun Kang ,  Yuxiang Xing ,  Ziran Zhao ,  Yongshun Xiao ,  Zhifeng Huang

发明人： Liang Li ,  Zhiqiang Chen ,  Li Zhang ,  Kejun Kang ,  Yuxiang Xing ,  Ziran Zhao ,  Yongshun Xiao ,  Zhifeng Huang

IPC分类号： G06K9/00 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： G06T11/006 ,  G06T2211/421

摘要： A method and apparatus for CT image reconstruction may include selecting, by a unit, projection data of the same height on a curve having a curvature approximate to that of the scanning circular orbit, implementing, by a unit, a weighting processing on the selected projection data, filtering, by a unit, the weighting processed projection data along a horizontal direction, implementing, by a unit, three-dimensional back projection on the filtered projection data along the direction of ray. The method and apparatus can effectively eliminate cone beam artifact under a large cone angle.

摘要翻译： 用于CT图像重建的方法和装置可以包括以单位选择具有接近于扫描圆形轨道的曲率的曲线上具有相同高度的投影数据，由单元实现对所选投影的加权处理 数据，单位滤波沿着水平方向的加权处理的投影数据，通过一个单元沿着沿着光线的方向实现对经滤波的投影数据的三维反投影。 该方法和装置可以有效地消除大锥角下的锥束伪影。

公开(公告)号：US08559593B2

公开(公告)日：2013-10-15

申请号：US12923558

申请日：2010-09-28

申请人： Sadato Akahori

发明人： Sadato Akahori

IPC分类号： H05G1/60 ,  H05G1/64

CPC分类号： A61B6/032 ,  A61B6/06 ,  A61B6/469 ,  A61B6/542

摘要： A radiation source and a detection means are moved relative to each other, thereby moving the radiation source to a plurality of positions. A subject is irradiated with radiation from the plurality of positions to obtain a plurality of radiographic images of the subject. A slice image of the subject is reconstructed from the plurality of radiographic images. At this time, a first mode for moving only the radiation source or a second mode for moving both of the radiation source and the detection means is selected based on the condition of radiography, and the plurality of radiographic images are obtained in the selected mode.

摘要翻译： 辐射源和检测装置相对于彼此移动，从而将辐射源移动到多个位置。 用来自多个位置的辐射照射受试者，以获得对象的多个放射照相图像。 从多个放射照相图像重建对象的切片图像。 此时，基于放射线摄影的条件选择用于仅移动辐射源的第一模式或用于移动辐射源和检测装置两者的第二模式，并且以所选择的模式获得多个放射照相图像。