专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

US20090274265A1 CONTINUOUS COMPUTER TOMOGRAPHY PERFORMING SUPER-SHORT-SCANS AND STRONGER WEIGHTING OF MOST RECENT DATA 审中-公开
标题翻译：连续计算机图像执行超短扫描和最新数据的强加权重
公开(公告)号：US20090274265A1
公开(公告)日：2009-11-05
申请号：US11913818
申请日：2006-05-03
申请人： Thomas Koehler , Peter Forthmann , Michael Grass
发明人： Thomas Koehler , Peter Forthmann , Michael Grass
IPC分类号： A61B6/00 , H05G1/60
CPC分类号： G01T1/2985 , G01N23/046 , G01N2223/419 , G06T11/005 , G06T2211/412 , G06T2211/421 , G06T2211/428
摘要： A computer tomography apparatus and method, a computer-readable medium and a program element are provided for examining a region of interest (ROI) of an object or patient in real-time. When only a region of interest is to be reconstructed, it is sufficient to rotate the radiation source and detector elements such that they cover a circular arc whose extension is less than π+α, α being the beam angle of the radiation source. This scanning range is called super-short-scan. Super-short-scans produce less data. Consequently image reconstruction is quicker which is very preferable for real-time CT. The CT data can furthermore be weighted in a manner that data detected at the end of a super-short-scan are weighted stronger than data detected at the beginning of a super-short-scan.
摘要翻译：提供计算机断层摄影装置和方法，计算机可读介质和程序元件，用于实时检查对象或患者的感兴趣区域（ROI）。当仅需要重建感兴趣的区域时，旋转辐射源和检测器元件就足以覆盖其延伸小于pi +α的圆弧，α是辐射源的射束角。该扫描范围称为超短扫描。超短扫描会产生较少的数据。因此，图像重建更快，这对于实时CT是非常优选的。此外可以以超短扫描结束时检测到的数据加权比在超短扫描开始时检测到的数据更强的CT数据进行加权。

22. 发明申请

US20080027307A1 Drug Application During a Ct Scan 有权
标题翻译： Ct扫描期间的药物应用
公开(公告)号：US20080027307A1
公开(公告)日：2008-01-31
申请号：US10598004
申请日：2005-02-15
申请人： Thomas Koehler , Michael Grass
发明人： Thomas Koehler , Michael Grass
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/503 , A61B6/541 , A61B8/481
摘要： Controlled local application of drugs to a certain part of a body of a patient may be of major importance during a cardiac CT scan. By transporting the drugs in containers which prevent an application of the drugs and by rupturing only those containers which are located in the vicinity of the part of the body of a patient to which the drugs have to be applied, a local application of the drugs may be performed. According to an exemplary embodiment of the present invention, the rupturing and therefore the application of the drugs may be triggered by a monitoring algorithm which evaluates changes in the heart beat rate of the patient. Advantageously, the method allows for a local delivery of the drugs on a fine time scale and therefore for a fast control of the heart beat rate during the CT scan.
摘要翻译：在心脏CT扫描期间，将药物局部应用于患者身体的某一部分可能是非常重要的。通过将药物运送到容器中，以防止药物的使用，并且仅破坏那些位于药物必须施用的患者身体部分附近的容器，则药物的局部应用可以被执行。根据本发明的示例性实施例，药物的破裂和因此的应用可以由评估患者心跳速率变化的监测算法来触发。有利地，该方法允许在精细时间范围内局部递送药物，因此可以在CT扫描期间快速控制心跳率。

23. 发明授权

US07209580B2 Fast computed tomography method 失效
标题翻译：快速计算机断层扫描法
公开(公告)号：US07209580B2
公开(公告)日：2007-04-24
申请号：US10276020
申请日：2002-03-08
申请人： Michael Grass , Thomas Koehler , Roland Proksa
发明人： Michael Grass , Thomas Koehler , Roland Proksa
IPC分类号： G06K9/00 , G06K9/40 , A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： G01N23/046 , A61B6/027 , G01N2223/419
摘要： The invention relates to a computed tomography method for forming images of an object to be examined which is arranged in an examination zone. The examination zone is scanned by means of a conical X-ray beam. In order to enable images having a high image quality to be formed from a selected imaging zone while making an as small as possible computational effort, the invention proposes the following steps: a) selecting an imaging zone of the object to be examined, b) determining the sub-regions of the X-ray detector on which the imaging zone of the object to be examined is projected during the acquisition of the projection data, c) forming sub-projection data by selecting the projection data associated with the sub-regions from the acquired projection data, and d) reconstructing the desired image from the sub-projection data by backprojection.
摘要翻译：本发明涉及一种用于形成布置在检查区中的被检查物体的图像的计算机断层摄影方法。检查区域通过锥形X射线束扫描。本发明提供以下步骤：a）选择待检查对象的成像区域，b）为了使所选择的成像区域能够形成具有高图像质量的图像，确定在获取投影数据期间投影被检查物体的成像区域的X射线检测器的子区域，c）通过选择与子区域相关联的投影数据来形成子投影数据并且d）通过反投影从副投影数据重建所需图像。

24. 发明授权

US07142628B2 Computed tomography method 失效
标题翻译：计算机断层扫描法
公开(公告)号：US07142628B2
公开(公告)日：2006-11-28
申请号：US10509932
申请日：2003-04-09
申请人： Michael Grass , Thomas Koehler , Roland Proksa
发明人： Michael Grass , Thomas Koehler , Roland Proksa
IPC分类号： G01N23/00
CPC分类号： A61B6/032 , A61B6/027 , G01N23/046 , G01N2223/419 , G06T11/005 , Y10S378/901
摘要： The invention relates to a computed tomography method in which a rebinning operation is carried out so as to form parallel fan beams whose rays traverse a plane, containing the axis of rotation, in equidistant puncture points. Reconstruction is performed for rays which extend perpendicularly to said planes. Such a transition from a cone beam geometry to a parallel beam geometry enables very fast reconstruction which can be carried out notably for CT fluoroscopy.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中进行重组操作以形成平行扇形束，其平行扇形束横穿包含旋转轴线的平面在等距穿刺点中。对垂直于所述平面延伸的射线进行重建。从锥形束几何形状到平行光束几何形状的这种过渡使得能够非常快速地重建，这可以用于CT荧光透视。

25. 发明授权

US07020317B2 Computed tomography apparatus 失效
公开(公告)号：US07020317B2
公开(公告)日：2006-03-28
申请号：US10135265
申请日：2002-04-30
申请人： Michael Grass , Thomas Koehler , Roland Proksa
发明人： Michael Grass , Thomas Koehler , Roland Proksa
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/027 , Y10S378/901
摘要： The invention relates to a computed tomography apparatus in which the measuring data acquired in a first measuring window enter the reconstruction with a weight other than that of the measuring data that can be acquired in a second measuring window, the second measuring window being situated centrally relative to the first measuring window and being smaller than the first measuring window. Depending on the weighting of the measuring data, the resultant CT image exhibits either smaller motional artefacts or a spatially more uniform noise.

26. 发明授权

US06785356B2 Fluoroscopic computed tomography method 有权
标题翻译：荧光计算机断层扫描法
公开(公告)号：US06785356B2
公开(公告)日：2004-08-31
申请号：US10293671
申请日：2002-11-13
申请人： Michael Grass , Thomas Koehler
发明人： Michael Grass , Thomas Koehler
IPC分类号： A61B600
CPC分类号： G01N23/043 , A61B6/032 , A61B6/5205 , G01N21/645 , Y10S378/901
摘要： The invention relates to a fluoroscopic computed tomography method in which measuring values are continuously acquired so as to be subjected to rebinning and filtering, after which CT images are reconstructed therefrom in a dense temporal sequence. The backprojection comprises the filtered data of fan beams which, while taking into account the data from diametrically oppositely situated zones, cover an overall projection angle range of 180°.
摘要翻译：本发明涉及一种荧光透视计算机断层摄影方法，其中连续地获取测量值以进行重组和滤波，之后以紧密的时间序列重建CT图像。反投影包括风扇光束的滤波数据，其同时考虑到沿径向相对定位的区域的数据，覆盖180°的总体投影角度范围。

27. 发明授权

US06606514B2 Device for reproducing slice images 有权
标题翻译：用于再现切片图像的装置
公开(公告)号：US06606514B2
公开(公告)日：2003-08-12
申请号：US09729585
申请日：2000-12-04
申请人： Michael Grass , Thomas Koehler
发明人： Michael Grass , Thomas Koehler
IPC分类号： A61B505
CPC分类号： A61B6/4441 , A61B6/547 , A61B34/20 , A61B90/11 , A61B90/36 , A61B2034/2055 , A61B2034/2072
摘要： The invention relates to a device for reproducing slice images during the treatment of an object to be examined, the device includes measuring hardware for determining, relative to a reference system, the position of a medical instrument partly introduced into the object to be examined during the treatment. In order to enable such a device to change the orientation of slice images during the treatment in a simple and interactive manner, according to the invention adjusting means are provided on the part of the medical instrument which projects from the object to be examined in order to change the orientation of the slice images reproduced. The invention also relates to a medical instrument appropriately constructed for this purpose and provided with such adjusting means as well as to an appropriate method.
摘要翻译：本发明涉及一种用于在待检查对象的处理期间再现切片图像的装置，该装置包括：测量硬件，用于相对于参考系统确定部分被引入待检查对象的医疗器械的位置，治疗。为了使这种装置能够以简单和交互的方式在切割图像的方向上改变切片图像的方向，根据本发明，在从被检查对象突出的医疗器具的一部分上提供调节装置，以便改变切片图像的方向再现。本发明还涉及适用于此目的并且具有这种调节装置以及适当方法的医疗器械。

28. 发明授权

US06426989B2 Computed tomography method 有权
标题翻译：计算机断层扫描法
公开(公告)号：US06426989B2
公开(公告)日：2002-07-30
申请号：US09840206
申请日：2001-04-23
申请人： Michael Grass , Thomas Koehler , Roland Proksa
发明人： Michael Grass , Thomas Koehler , Roland Proksa
IPC分类号： G01N2300
CPC分类号： G06T11/006 , A61B6/027 , Y10S378/901
摘要： The invention relates to a computed tomography method which involves a conical radiation beam which irradiates the examination zone along at least two trajectories that are offset relative to one another in the direction of the axis of rotation, the distance between the trajectories being chosen to be so large that voxels in an intermediate region are not completely irradiated neither in one trajectory nor in the other trajectory. The absorption distribution in this intermediate region can be reconstructed without loss of image quality when measuring data from both trajectories are combined.
摘要翻译：本发明涉及一种计算机断层摄影方法，该方法涉及一种锥形辐射束，该锥形辐射束沿着沿着旋转轴线的方向相对于彼此偏移的至少两个轨迹照射检查区域，轨迹之间的距离选择为在中间区域中的体素不是在一个轨迹中也不在另一个轨迹中完全照射。当从两个轨迹的数据进行组合时，可以重建该中间区域的吸收分布而不损失图像质量。

29. 发明授权

US07889901B2 Computed tomography method with helical relative movement and conical beam bundle 失效
标题翻译：计算机断层扫描方法与螺旋相对运动和锥形束束
公开(公告)号：US07889901B2
公开(公告)日：2011-02-15
申请号：US11815606
申请日：2006-01-31
申请人： Claas Bontus , Michael Grass , Thomas Koehler
发明人： Claas Bontus , Michael Grass , Thomas Koehler
IPC分类号： G06K9/00 , A61B6/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421
摘要： The invention relates to a computed tomography method in which a periodically moving object is irradiated by a conical beam bundle. An nPi-relative movement is generated between a radiation source, which generates the conical beam bundle, and the object. During the nPi-relative movement, measured values are acquired, which depend on the intensity in the beam bundle on the other side of the object and from these measured values filter values are determined, which are divided into different groups. The filter values of at least one group are weighted in dependence on the movement of the object, wherein, when filter values of several groups are weighted, filter values of different groups are weighted differently in dependence on the movement of the object. Finally, a CT image of the object is reconstructed from the filter values.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中周期性移动的物体被锥形束束照射。在产生锥形束束的辐射源和物体之间产生nPi相对运动。在nPi相对运动期间，获取测量值，其取决于物体另一侧上的束束中的强度，并且从这些测量值确定滤波器值，其被划分为不同的组。根据对象的移动对至少一个组的滤波器值进行加权，其中当对多个组的滤波器值进行加权时，根据对象的移动对不同组的滤波器值进行加权不同。最后，从过滤器值重建对象的CT图像。

30. 发明申请

US20080253502A1 Method and Device for the Iterative Reconstruction of Cardiac Images 有权
标题翻译：心脏图像迭代重建方法与装置
公开(公告)号：US20080253502A1
公开(公告)日：2008-10-16
申请号：US11908415
申请日：2006-03-09
申请人： Andy Ziegler , Michael Grass , Thomas Koehler
发明人： Andy Ziegler , Michael Grass , Thomas Koehler
IPC分类号： H05G1/60
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/424
摘要： The invention relates to a method and a device for the iterative reconstruction of cross-sectional images of the heart (7) of a patient based on projections (P1, . . . P5) from different directions which are for example generated with a helical cone-beam CT scanner. A cardiac weight function (f) quantifies how near the projections (P1, . . . ) are to a given observation phase (To) of the heart cycle based on simultaneously recorded electrocardiographic signals (ECG). The whole set of projections (P1, . . . ) is divided into subsets (S1, . . . ) which each contain only projections corresponding to a similar cardiac weight (f), and an iterative reconstruction algorithm like ART uses in one update or iteration step all projections of such a subset (S1, . . . ) simultaneous].
摘要翻译：本发明涉及一种用于基于来自不同方向的投影（P 1，...，P 5）迭代重建病人心脏（7）的横截面图像的方法和装置，其例如用螺旋锥束CT扫描仪。心脏重量函数（f）基于同时记录的心电图信号（ECG）量化投影（P 1，...）附近到心脏周期的给定观察阶段（To）的距离。整个投影组（P 1，...）被划分成子集（S 1，...），每个子集仅包含对应于类似心脏重量（f）的投影，并且像ART这样的迭代重建算法在一个更新或迭代步骤同步所有这样的子集（S 1，...）的投影。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式