公开(公告)号：US07822172B2

公开(公告)日：2010-10-26

申请号：US11973471

申请日：2007-10-09

申请人： Ernst-Peter Rührnschopf ,  Bernhard Scholz

发明人： Ernst-Peter Rührnschopf ,  Bernhard Scholz

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。

公开(公告)号：US07801266B2

公开(公告)日：2010-09-21

申请号：US11598190

申请日：2006-11-09

申请人： Alois Nöttling ,  Ernst-Peter Rührnschopf ,  Bernhard Scholz

发明人： Alois Nöttling ,  Ernst-Peter Rührnschopf ,  Bernhard Scholz

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。

公开(公告)号：US20080159469A1

公开(公告)日：2008-07-03

申请号：US11903800

申请日：2007-09-25

申请人： Ernst-Peter Ruhrnschopf ,  Bernhard Scholz

发明人： Ernst-Peter Ruhrnschopf ,  Bernhard Scholz

IPC分类号： G01N23/00 ,  G06K9/00

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。

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

申请人： Roselle Anderson ,  Thomas Mertelmeier ,  Bernhard Scholz

发明人： Roselle Anderson ,  Thomas Mertelmeier ,  Bernhard Scholz

IPC分类号： A61B5/05 ,  A61B5/053 ,  A61B8/00 ,  A61B8/08 ,  A61B10/00

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：US07729756B2

公开(公告)日：2010-06-01

申请号：US10181402

申请日：2001-01-18

申请人： Thomas Mertelmeier ,  Bernhard Scholz

发明人： Thomas Mertelmeier ,  Bernhard Scholz

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。

公开(公告)号：US20090175407A1

公开(公告)日：2009-07-09

申请号：US12317061

申请日：2008-12-18

申请人： Wolfgang Harer ,  Ernst-Peter Ruhmschopf ,  Bernhard Scholz

发明人： Wolfgang Harer ,  Ernst-Peter Ruhmschopf ,  Bernhard Scholz

IPC分类号： H05G1/60 ,  G06K9/00

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。

公开(公告)号：US20080247624A1

公开(公告)日：2008-10-09

申请号：US12080460

申请日：2008-04-03

申请人： Bernhard Scholz

发明人： Bernhard Scholz

IPC分类号： G06K9/00 ,  G06T15/00

CPC分类号： G06T11/005 ,  A61B6/5258

摘要： A provisional three-dimensional reconstruction of an examination object is determined based on two-dimensional original projection images. Provisional metal volumes are determined on the reconstruction by segmentation and mapped into the original projection images to define provisional metal areas. Edge points on edge zones of the provisional metal areas are selected. Data values of the original projection images within the provisional metal areas are modified as a function of data values of the selected edge points to determine modified projection images. Differential images are determined based on the original projection images and the corresponding modified projection images. Definitive metal areas are determined in the differential images by segmentation. The differential images are added to the modified projection images with the definitive metal areas deducted. A definitive three-dimensional reconstruction of the examination object is determined based on the modified projection images including the added differential images.

摘要翻译： 基于二维原始投影图像确定检查对象的临时三维重建。 通过分割确定临时金属体积，并将其映射到原始投影图像中以定义临时金属区域。 选择临时金属区域的边缘区域上的边缘点。 临时金属区域内的原始投影图像的数据值被修改为所选边缘点的数据值的函数，以确定修改的投影图像。 基于原始投影图像和对应的修改投影图像来确定差分图像。 通过分割在差分图像中确定确定的金属区域。 将差分图像添加到经修正的投影图像中，并扣除确定的金属面积。 基于包括添加的差分图像的修改的投影图像来确定检查对象的确定的三维重建。

公开(公告)号：US20080165918A1

公开(公告)日：2008-07-10

申请号：US12004363

申请日：2007-12-20

申请人： Bernhard Scholz

发明人： Bernhard Scholz

IPC分类号： A61B6/00

CPC分类号： G06T11/005 ,  A61B6/583 ,  G06T2211/432

摘要： The invention relates to a method for correcting truncation artifacts in reconstructing computer tomography recordings. The projection images of the computer tomography recordings are extended by extrapolation. An equivalent body is determined which in the peripheral region of the projection image attenuates the radiation emanating from a radiation source of the computer tomography according to the object to be examined, and the attenuation is determined outside the projection image for extrapolated image points. A smoothing of the signal of a projection data line is effected with a digital polynomial filter to reduce the noise portion of the signal. The truncated portion of the projection data line is computed from the smoothed signal of the projection data line by an extrapolation method.

摘要翻译： 本发明涉及一种用于在重建计算机断层摄影记录中校正截断假象的方法。 计算机断层摄影记录的投影图像通过外推进行扩展。 确定在投影图像的外围区域中根据被检查物体从计算机断层摄影的辐射源发出的辐射衰减的等效物体，并且在用于外推图像点的投影图像之外确定衰减。 用数字多项式滤波器对投影数据线的信号进行平滑以减少信号的噪声部分。 通过外推法从投影数据线的平滑信号计算投影数据线的截断部分。