-
公开(公告)号：US20090175407A1
公开(公告)日：2009-07-09
申请号：US12317061
申请日：2008-12-18
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4441 , G01N2223/401 , G01N2223/419 , G01N2223/421 , G01N2223/612
摘要： In a computer tomography method an object region of the object being examined is determined in that projection beams that are linked with maximum attenuation are sought in cropped projection images. A central point of the object region is then determined and the object sections associated with the projection beams plotted on the central point. The object region can be at least approximately determined using the end points of the object sections.
摘要翻译： 在计算机断层摄影方法中，确定被检查物体的物体区域是在裁切的投影图像中寻找与最大衰减相关联的投影光束。 然后确定对象区域的中心点，并将与投影光束相关联的对象部分绘制在中心点上。 可以使用对象部分的端点至少近似地确定对象区域。
-
2.发明申请Method for acquiring a 3D image dataset freed of traces of a metal object 有权用于获取没有金属物体痕迹的3D图像数据集的方法公开(公告)号：US20120237115A1
公开(公告)日：2012-09-20
申请号：US13420706
申请日：2012-03-15
IPC分类号： G06K9/00
CPC分类号： G06T19/00 , A61B6/03 , A61B6/12 , A61B6/5258 , G06T7/11 , G06T11/005 , G06T2210/41 , G06T2211/424
摘要： An interpolation of data values is performed during the acquisition of a 3D image dataset which is free of traces of a metal object imaged in the underlying 2D image datasets. A target function is defined into which data values of the 3D image dataset that are dependent on said substitute data values are incorporated following preprocessing. The substitute data values are then varied iteratively until the value of the target function satisfies a predetermined criterion. Residual artifacts that still persist following the interpolation can thus be effectively reduced.
摘要翻译： 在获取3D图像数据集的过程中执行数据值的内插，该3D图像数据集没有在下面的2D图像数据集中成像的金属物体的痕迹。 定义目标函数，其中在预处理之后并入依赖于所述替代数据值的3D图像数据集的数据值。 然后，替代数据值被迭代地改变，直到目标函数的值满足预定标准。 因此，可以有效地减少在插补之后仍然存在的残余伪影。
-
公开(公告)号：US07822172B2
公开(公告)日：2010-10-26
申请号：US11973471
申请日：2007-10-09
IPC分类号： A61B6/03
CPC分类号： G01N23/04 , A61B6/583 , G06T11/005
摘要： The invention relates to a method for beam hardening correction in medical image. Beam hardening within the context of medical imaging projection image profiles are split up into a basic profile which is assigned to a homogeneous object area and into a detailed profile which is assigned to an inhomogeneous object area. On the basis of the basic profile and of the difference profile the mass occupancy of the different components in the object to be examined can be approximately determined. On the basis of the approximately determined mass occupancy the correction of the beam hardening can then be performed directly on the projection data.
摘要翻译： 本发明涉及医用图像中的束硬化校正方法。 在医学成像投影图像轮廓的上下文中的光束硬化被分割成基本轮廓，其被分配给均匀的对象区域和分配给不均匀对象区域的详细轮廓。 基于基本轮廓和差异轮廓，可以近似地确定待检查对象中的不同部件的质量占有率。 基于大致确定的质量占有率，可以直接对投影数据执行光束硬化的校正。
-
4.发明授权Method for speeding up the scattered radiation correction in a computed tomography system 有权在计算机断层摄影系统中加速散射辐射校正的方法公开(公告)号：US07801266B2
公开(公告)日：2010-09-21
申请号：US11598190
申请日：2006-11-09
IPC分类号： A61B6/03
CPC分类号： G06T11/005 , A61B6/032 , A61B6/5282
摘要： The invention relates to a method for speeding up the scattered radiation correction in a computed tomography system with a radiation source and a detector constructed in large-area format with a number of rows of detectors, by which an object is scanned from numerous projection angles, uses the measured values for the attenuation of the radiation in generating projection data which is postprocessed for the purpose of reconstructing tomographic views, in doing which a beam hardening correction is applied directly to the projection data, whereby according to the invention the scattered radiation correction is also applied directly to the projection data.
摘要翻译： 本发明涉及一种用于加速具有辐射源的计算机断层摄影系统中的散射辐射校正的方法，以及以大面积格式构造的具有多行检测器的检测器，通过该检测器从多个投影角度扫描物体， 在产生投影数据的测量值中，为了重建断层图像而进行后处理的投影数据，在这样做时，将束强化校正直接应用于投影数据，由此根据本发明，散射辐射校正是 也直接应用于投影数据。
-
公开(公告)号：US07734009B2
公开(公告)日：2010-06-08
申请号：US11284235
申请日：2005-11-21
申请人： Thomas Brunner , Klaus Klingenbeck-Regn , Michael Maschke , Alois Nöttling , Ernst-Peter Rührnschopf , Bernhard Scholz , Bernd Schreiber , Norbert Karl Strobel , Karl Wiesent , Michael Zellerhoff
发明人： Thomas Brunner , Klaus Klingenbeck-Regn , Michael Maschke , Alois Nöttling , Ernst-Peter Rührnschopf , Bernhard Scholz , Bernd Schreiber , Norbert Karl Strobel , Karl Wiesent , Michael Zellerhoff
IPC分类号： G01N23/083 , H05G1/02
CPC分类号： G06T11/005 , A61B6/466 , A61B6/504 , G06T2211/404
摘要： The invention relates to an angiographic x-ray diagnostic device for rotation angiography with an x-ray emitter which can be moved on a circular path about a patient located on a patient support table, with an image detector unit which can moved on the circular path facing the x-ray emitter, with a digital image system for recording a plurality of projection images by means of rotation angiography, with a device for image processing, by means of which the projection images are reconstructed into a 3D volume image, and with a device for correcting physical effects and/or inadequacies in the recording system such as truncation correction, scatter correction, ring artifact correction, correction of the beam hardening and/or of the low frequency drop for the soft tissue display of projection images and the 3D volume images resulting therefrom.
摘要翻译： 本发明涉及一种用X射线发射器进行旋转血管造影的血管造影X射线诊断装置，该X射线发射器可以围绕位于病人支撑台上的患者的圆形路径移动，图像检测器单元可在圆形路径上移动 面对x射线发射器，具有用于通过旋转血管造影记录多个投影图像的数字图像系统，具有用于图像处理的装置，通过该装置将投影图像重建成3D体积图像，并且利用 用于校正记录系统的物理效应和/或不足的装置，例如用于投影图像的软组织显示的截断校正，散射校正，环形伪影校正，光束硬化的校正和/或低频率下降以及3D体积 由此产生的图像。
-
6.发明申请Method for combined bone hardening and scattered radiation correction in X-ray computed tomography 有权X线计算机断层扫描中组合骨硬化和散射辐射矫正的方法公开(公告)号：US20080159469A1
公开(公告)日：2008-07-03
申请号：US11903800
申请日：2007-09-25
CPC分类号： A61B6/505 , A61B6/032 , A61B6/4291
摘要： The invention relates to a method for combined bone hardening and scattered radiation correction in X-ray computed tomography of a heterogeneous object with a CT system comprising an X-ray source moved around an object, a flat detector with a large number of distributed detector elements which detect measuring beams from a focal point of the X-ray tube, and a control and arithmetic-logic unit—by iterative reconstruction and segmented vectorial reprojection calculation, wherein a scattered radiation correction and a radiation hardening correction are carried out in each iteration cycle for at least two different material components of the object being examined. The invention also relates to an X-ray CT system for carrying out this method.
摘要翻译： 本发明涉及一种用于具有CT系统的X射线计算机断层摄影中的组合骨硬化和散射辐射校正的方法，所述CT系统包括围绕物体移动的X射线源，具有大量分布式检测器元件的平面检测器 其检测来自X射线管的焦点的测量光束，以及控制和算术逻辑单元 - 通过迭代重建和分段矢量重新投影计算，其中在每个迭代循环中执行散射辐射校正和辐射硬化校正 对于被检查物体的至少两种不同的材料成分。 本发明还涉及一种用于执行该方法的X射线CT系统。
-
7.发明授权Method for localizing at least one focal lesion in a biological tissue section 有权用于在生物组织切片中定位至少一个局灶性病变的方法公开(公告)号：US07239911B2
公开(公告)日：2007-07-03
申请号：US10614944
申请日：2003-07-08
申请人： Bernhard Scholz
发明人： Bernhard Scholz
IPC分类号： A61B5/05
CPC分类号： A61B5/053
摘要： In a method for localizing at least one focal lesion in a biological tissue section, the lesion exhibiting an electrical property different from the tissue section, and the electrical property in the tissue section being essentially constant, a sequence of electrical excitation signals having different frequency is supplied to the tissue section, electrical response signals are measured at a number of measuring locations on the surface of the tissue section that occur due to the excitation signals, electrical admittance data are determined from the response signals dependent on the location on the surface, a maximum of the admittance data and the appertaining position of the maximum on the surface are determined, and a depth position of the lesion under the position of the maximum is determined dependent on the position of the maximum.
摘要翻译： 在用于在生物组织切片中定位至少一个局灶性病变的方法中，具有不同于组织部分的电性质，并且组织部分中的电性质基本上恒定的病变，具有不同频率的电激励信号的序列是 提供给组织部分的电响应信号是由于激发信号由组织部分的表面上的多个测量位置测量的，电导纳数据是根据取决于表面位置的响应信号确定的 确定导纳数据的最大值和表面上最大值的保持位置，并且根据最大值的位置确定病变在最大位置下的深度位置。
-
公开(公告)号：US06952606B2
公开(公告)日：2005-10-04
申请号：US10202871
申请日：2002-07-26
CPC分类号： A61B5/4312 , A61B5/0536 , A61B5/415 , A61B5/418 , A61B8/0825 , Y10S128/916
摘要： An electrical impedance scanner having a probe in its contact surface [lacuna] an electrode matrix for detection of the surface distribution of the body current and/or body potentials originating from an opposing electrode which is fitted at some other point on the body of the patient, in which case additional ultrasound transducers (12) for the transmission and reception of ultrasound waves are installed in the contact surface (9) of the probe (3) and are connected to an ultrasound investigation appliance which has a monitor.
摘要翻译： 一种电阻抗扫描仪，其在其接触表面具有探针，用于检测源自相对电极的身体电流和/或体电位的表面分布的电极基体，该对置电极安装在患者身体的某个其他位置 在这种情况下，用于发送和接收超声波的附加的超声换能器（12）安装在探针（3）的接触表面（9）中，并连接到具有监视器的超声检查装置。
-
公开(公告)号：US6015928A
公开(公告)日：2000-01-18
申请号：US991005
申请日：1997-12-15
IPC分类号： B01J23/75 , C07B61/00 , C07C29/141 , C07C29/16 , C07C31/125 , C07C45/50 , C07C47/02 , C08K5/10 , C07C27/22
CPC分类号： C07C29/141 , C07C29/16 , C07C45/50
摘要： A single-stage process is described that includes simultaneously, in a mixture containing an olefin; synthesis gas; a cobalt catalyst in an organic phase; and an aqueous cobalt salt solution; hydroformylating the olefin, and forming and extracting into the organic phase the cobalt catalyst from the aqueous cobalt salt solution. An apparatus is also described that includes a means for carrying out the process. The process is particularly suitable for preparing aldehydes and alcohols.
摘要翻译： 描述了在含有烯烃的混合物中同时进行的单阶段方法; 合成气; 有机相中的钴催化剂; 和钴盐水溶液; 对烯烃进行加氢甲酰化，并从钴盐水溶液中形成和提取钴催化剂到有机相中。 还描述了一种包括用于执行该过程的装置的装置。 该方法特别适用于制备醛和醇。
-
10.发明授权Measurement system for examining a section of tissue on a patient and the use of a measurement system of this type 失效用于检查患者部分组织的测量系统以及这种测量系统的使用公开(公告)号：US07729756B2
公开(公告)日：2010-06-01
申请号：US10181402
申请日：2001-01-18
IPC分类号： A61B5/05
CPC分类号： A61B5/0536 , A61B5/0091 , A61B2562/0209 , A61B2562/046
摘要： A measurement system for examining a section of tissue on a patient in which electric current and/or voltages are applied to a patient in at least one location and are measured on the section of tissue to be examined by at least one electrode of a contact surface of the measurement system. As a result, conclusions can be drawn about the interior of the section of tissue to be examined. The electrode is at least partially surrounded by a conductor element for contacting with a potential which deviates from that of the conductor element.
摘要翻译： 一种用于检查患者的组织部分的测量系统，其中在至少一个位置向患者施加电流和/或电压，并且通过接触表面的至少一个电极在要检查的组织的部分上测量 的测量系统。 因此，可以得出关于要检查的组织部分的内部的结论。 电极至少部分地被导体元件包围，以与与导体元件的电位相偏离的电位接触。
-
-
-
-
-
-
-
-
-
搜索结果
64 条记录 (耗时 0.026 秒)