公开(公告)号：US07860209B2

公开(公告)日：2010-12-28

申请号：US12000831

申请日：2007-12-18

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： H05G1/62 ,  G01N23/083

CPC分类号： A61B6/541 ,  A61B6/027

摘要： A method is described for imaging an organ in a human or animal body via a computed tomography system having an X-ray radiation source which rotates around the body along a circumferential ring. In at least one embodiment, the circumferential ring in each case is fixed in one position for recording of an image data segment on one slice plane during one revolution of the X-ray radiation source relative to the body, and the X-ray radiation source is triggered by a cycle signal which represents a movement cycle of the organ and is activated for a limited measurement time interval. In at least one embodiment, the circumferential ring is moved sequentially to further positions relative to the body between each of the recordings, in order to record image data on further slice planes. In at least one embodiment, the timing and duration of the measurement time interval for an image data segment to be recorded are dynamically matched to a structure of the cycle signal. Furthermore, in at least one embodiment, a control device for a computed tomography system and/or a computed tomography system having a control device such as this are described.

摘要翻译： 描述了一种用于通过具有沿着圆周环围绕身体旋转的X射线辐射源的计算机断层摄影系统对人体或动物体内的器官进行成像的方法。 在至少一个实施例中，每个情况下的圆周环固定在一个位置，用于在X射线辐射源相对于身体旋转一周期间在一个切片平面上记录图像数据段，并且X射线辐射源 由表示器官的移动周期的周期信号触发，并在有限的测量时间间隔内被激活。 在至少一个实施例中，为了将图像数据记录在另外的切片平面上，圆周环顺序移动到相对于身体在每个记录之间的更多位置。 在至少一个实施例中，要记录的图像数据段的测量时间间隔的定时和持续时间与循环信号的结构动态匹配。 此外，在至少一个实施例中，描述了具有诸如此类的控制装置的计算机断层摄影系统和/或计算机断层摄影系统的控制装置。

公开(公告)号：US20100054569A1

公开(公告)日：2010-03-04

申请号：US12585023

申请日：2009-09-01

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： G06K9/00

CPC分类号： A61B6/4014 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/4441 ,  A61B6/466 ,  A61B6/482 ,  A61B6/5258 ,  A61B6/541 ,  G06T11/005

摘要： A method is disclosed for creating computed tomography recordings of a patient with metallic components. In at least one embodiment, the method includes scanning the patient by use of an x-ray tube detector system, with at least one sinogram being compiled; determining the detector signal data, which was attenuated by the metallic components in the patient; deleting the detector signal data, which was influenced by metallic components; determining the beam tracks in the sinogram at least of the volume elements, which are struck by beams which are attenuated by the metallic components and which cross the beam track of the deleted detector signal data in the sonogram; determining a minimal measurement value on each beam track respectively; adding together the minimal measurement values of the beam tracks to obtain the measurement points of the deleted detector signal data crossed by these beam tracks in the sonogram; and using this at least one sinogram determined in this manner to reconstruct computed tomography recordings of the patient without a metallic component, and displaying the reconstructed computed tomography recordings of the patient with metallic components.

摘要翻译： 公开了一种用于创建具有金属部件的患者的计算机断层摄影记录的方法。 在至少一个实施例中，该方法包括使用X射线管检测器系统对患者进行扫描，其中至少一个正弦图被编译; 确定由患者中的金属部件衰减的检测器信号数据; 删除受金属部件影响的检测器信号数据; 确定正弦图中的至少一个体积元素的光束轨迹，这些光束被由金属部件衰减并且与超声波图中被删除的检测器信号数据的光束轨迹交叉的光束撞击; 分别确定每个光束轨道上的最小测量值; 将波束轨迹的最小测量值相加在一起，以获得在超声波图中被这些波束轨迹交叉的被删除检测器信号数据的测量点; 并且使用这种以这种方式确定的至少一个正弦图来重建没有金属部件的患者的计算机断层摄影记录，并且用金属部件显示患者的重建计算机断层摄影记录。

公开(公告)号：US20100021033A1

公开(公告)日：2010-01-28

申请号：US12458760

申请日：2009-07-22

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： G06K9/00 ,  H05G1/60

CPC分类号： A61B6/481 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/482 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541 ,  G06T7/0016 ,  G06T7/215 ,  G06T2207/10081 ,  G06T2207/20056 ,  G06T2207/30048

摘要： A method is disclosed for differentiating and displaying moving and stationary heart regions of a patient in X-ray CT. In at least one embodiment, the method includes carrying-out circular or helical scanning of a patient in the region of his or her heart using an X-ray CT scanner including a detector with a multiplicity of detector elements, and storing at least one sinogram from a multiplicity of projection data from encircling projection directions; and reconstructing at least one tomographic display of the heart from the at least one sinogram and displaying the at least one reconstructed display of the heart. According to at least one embodiment of the invention, the projection data are Fourier transformed, filtered with respect to a predetermined frequency, inverse transformed, reconstructed, and output together with the tomographic display of the heart.

摘要翻译： 公开了一种用于在X射线CT中区分和显示患者的移动和静止心脏区域的方法。 在至少一个实施例中，该方法包括使用包括具有多个检测器元件的检测器的X射线CT扫描器对他或她心脏区域中的患者进行圆形或螺旋扫描，并且存储至少一个正弦图 来自环绕投影方向的多个投影数据; 以及从所述至少一个正弦图重构心脏的至少一个断层图像显示并且显示心脏的至少一个重建显示。 根据本发明的至少一个实施例，投影数据相对于预定频率进行傅里叶变换，滤波，与心脏的断层显像一起反向变换，重建和输出。

公开(公告)号：US20090124892A1

公开(公告)日：2009-05-14

申请号：US12289441

申请日：2008-10-28

申请人： Herbert Bruder ,  Karl Stierstorfer ,  Carsten Thierfelder

发明人： Herbert Bruder ,  Karl Stierstorfer ,  Carsten Thierfelder

IPC分类号： A61B6/03

CPC分类号： A61B6/481 ,  A61B6/503 ,  A61B6/507 ,  A61B6/541 ,  A61B6/589 ,  G01R33/5601 ,  G01R33/56366

摘要： A method and a CT system are disclosed for measuring the perfusion in vessels and/or muscles of the heart (cardiac perfusion) in a patient. In at least one embodiment of the method the patient receives a contrast agent bolus, the patient is scanned for a scan period of a plurality of cardiac cycles in a scan field of a CT system controlled by the cardiac rhythm, a plurality of CT image data is reconstructed from projection data of a particular cardiac phase from respectively one cardiac cycle, and the temporal profile of the absorption values at at least one location in the heart is determined and displayed on the basis of a plurality of CT image data at successive times. At least one embodiment of the invention is distinguished by the fact that during the examination, the patient is repeatedly and alternately moved in opposite directions along a system axis of the CT system such that his cardiac region passes through the scan field at a cardiac phase range and the cardiac region is completely scanned spirally.

摘要翻译： 公开了用于测量患者血管和/或心脏肌肉（心脏灌注）的灌注的方法和CT系统。 在该方法的至少一个实施方案中，患者接受造影剂推注，在由心律控制的CT系统的扫描场中扫描患者多个心动周期的扫描周期，多个CT图像数据 从特定心脏相位的投影数据分别从一个心动周期重构，并且基于连续的多个CT图像数据来确定和显示心脏中至少一个位置处的吸收值的时间分布。 本发明的至少一个实施例的特征在于，在检查期间，患者沿着CT系统的系统轴线沿相反方向重复地和交替地移动，使得他的心脏区域在心脏相位范围内通过扫描场 并且心脏区域被螺旋地完全扫描。

公开(公告)号：US08768030B2

公开(公告)日：2014-07-01

申请号：US13020256

申请日：2011-02-03

申请人： Herbert Bruder ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Karl Stierstorfer

IPC分类号： G06K9/00 ,  A61B6/00 ,  A61B6/03 ,  G06T11/00

CPC分类号： A61B6/481 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/466 ,  A61B6/482 ,  A61B6/504 ,  A61B6/507 ,  G06T11/006 ,  G06T2211/424

摘要： A method is disclosed for reconstructing image data of an examination object from measurement data of a computed tomography system, the examination object having been irradiated simultaneously by a number of X-ray sources while the measurement data was being acquired so that different projections of the examination object associated with the number of X-ray sources were acquired simultaneously for each detector element. In at least one embodiment, different iteration images of the examination object are determined one after the other from the measurement data by way of an iterative algorithm, a computation operation being employed with the iterative algorithm, which is applied to the iteration images and takes the presence of the number of X-ray sources into account.

摘要翻译： 公开了一种用于从计算机断层摄影系统的测量数据重建检查对象的图像数据的方法，在获取测量数据的同时由多个X射线源同时照射检查对象，使得检查的不同预测 与每个检测器元件同时获取与X射线源数量相关联的物体。 在至少一个实施例中，通过迭代算法从测量数据一个接一个地确定检查对象的不同迭代图像，与迭代算法一起使用计算操作，其应用于迭代图像，并采用 存在X射线源的数量。

公开(公告)号：US07257186B2

公开(公告)日：2007-08-14

申请号：US10686629

申请日：2003-10-17

申请人： Herbert Bruder ,  Guenter Lauritsch ,  Karl Stierstorfer ,  Kwok Tam

发明人： Herbert Bruder ,  Guenter Lauritsch ,  Karl Stierstorfer ,  Kwok Tam

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/06 ,  G06T11/006 ,  G06T2211/421 ,  Y10S378/901

摘要： An imaging method is disclosed for a multi-slice spiral CT scan. A CT unit is disclosed for carrying out this method. In the method, the filtering may be formed by use of multiple applications of a ramp filter and a masking operation to a projection image in a different sequence. The CT unit may include, for filtering purposes, multiple applications of a ramp filter and a masking operation to a projection image in a different sequence.

摘要翻译： 公开了一种用于多层螺旋CT扫描的成像方法。 公开了一种用于执行该方法的CT单元。 在该方法中，可以通过使用斜坡滤波器的多个应用和对不同序列中的投影图像的掩蔽操作来形成滤波。 为了过滤目的，CT单元可以以不同的顺序包括斜坡滤波器和掩蔽操作的多个应用到投影图像。

公开(公告)号：US20060140338A1

公开(公告)日：2006-06-29

申请号：US10544291

申请日：2004-01-28

申请人： Herbert Bruder ,  Gunter Lauritsch ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Gunter Lauritsch ,  Karl Stierstorfer

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

CPC分类号： G06T11/006 ,  A61B6/027

摘要： A method is disclosed for generating computer tomography images using a 3D image reconstruction method. According to the method, to scan an object to be examined using a cone-shaped bundle of rays originating from a focal point and a planar, preferably multi-line detector for detecting the bundle of rays, the focal point is displaced along a spiral trajectory around the object to be examined. The detector delivers output data corresponding to the detected radiation and image voxels from the scanned examined object are reconstructed from the optionally pre-processed output data, the image voxels reflecting the attenuation coefficients of the respective voxel. Each image voxel is reconstructed separately from projection data, which covers a projection angular range of at least 108° and an approximate weighting is carried out for each voxel considered in order to standardise the projection data using the voxel.

摘要翻译： 公开了一种使用3D图像重建方法生成计算机断层图像的方法。 根据该方法，为了使用来自焦点的锥形光束和用于检测光束的平面，优选多线检测器来扫描待检查的物体，焦点沿着螺旋轨迹移位 围绕要检查的对象。 检测器提供与检测到的辐射相对应的输出数据，并且从可选的预处理的输出数据重建来自扫描的被检查物体的图像体素，反映各个体素的衰减系数的图像体素。 每个图像体素与投影数据分开重建，投影数据覆盖至少108°的投影角度范围，并且为了使用体素标准化投影数据，为每个体素执行近似权重。

公开(公告)号：US20060018426A1

公开(公告)日：2006-01-26

申请号：US11166969

申请日：2005-06-24

申请人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

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

CPC分类号： A61B6/032 ,  A61B6/4014

摘要： In a tomography apparatus and method for obtaining correction values for two measurement planes, wherein the tomography apparatus an acquisition system disposed in a first measurement plane and a second acquisition system disposed in a second measurement plane that are disposed in the azimuthal direction around a common rotation axis, position correction values for both measurement planes are determined for a substantially constant rotation angle speed of the two acquisition systems using measurement values calculated at a rotation angle position of a reference object that can be introduced into both measurement planes. An artifact-free reconstruction of a slice or volume image can be made using the position correction values.

公开(公告)号：US20050276372A1

公开(公告)日：2005-12-15

申请号：US11147186

申请日：2005-06-08

申请人： Herbert Bruder ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Karl Stierstorfer

IPC分类号： A61B6/03 ,  A61B6/00 ,  G06T1/00

CPC分类号： A61B6/032 ,  A61B6/027

摘要： A method is for generating tomograms of a cyclically and complexly moving examination object using a tomography unit that reconstructs tomograms in at least one slice plane from detector output data. At least two tomograms from different phases of the movement cycle of the examination object are reconstructed in the region of at least one slice plane. The tomograms are subdivided automatically into subregions with good and bad image quality, and at least one complete tomogram is assembled from subregions with relatively good image quality per slice plane.

摘要翻译： 一种用于使用断层摄影单元产生循环和复杂移动的检查对象的断层图像的方法，所述断层摄影单元从检测器输出数据重建至少一个切片平面中的断层图像。 在至少一个切片平面的区域中重建来自检查对象的移动周期的不同阶段的至少两个断层图像。 断层图像被自动细分为具有良好和不良图像质量的子区域，并且至少一个完整的断层图像从具有相对较好的每个切片平面图像质量的子区域组装。

公开(公告)号：US07835485B2

公开(公告)日：2010-11-16

申请号：US12076040

申请日：2008-03-13

申请人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

IPC分类号： A61B6/00

CPC分类号： A61B6/4014 ,  A61B6/032 ,  A61B6/583

摘要： A method is disclosed for scattered radiation correction in x-ray imaging devices having a number of x-ray sources that can be moved around an examination object in at least one scanning plane during a measurement pass. During the measurement pass, a number of x-ray projections are recorded at different projection angles with simultaneous use of the x-ray sources. In at least one embodiment of the present method, parameters characterizing an outer object contour are determined in the scanning plane from measured data of different x-ray projections. In at least one embodiment, on the basis of one object contour section whose characterizing parameters have been determined from x-ray projections that lie in front of and/or behind the respective x-ray projection by a defined projection angle range, for each x-ray projection an assigned scattered radiation distribution is then retrieved or is interpolated in a database from scattered radiation distributions for object contour sections with similar characterizing parameters. This scattered radiation distribution is then used for the correction of the measured data for the respective x-ray projection. In at least one embodiment, the method enables scattered radiation correction in conjunction with operation of the x-ray sources.

摘要翻译： 公开了一种用于在X射线成像装置中的散射辐射校正的方法，其具有可在测量通过期间在至少一个扫描平面中围绕检查对象移动的多个x射线源。 在测量通过期间，以不同的投影角记录多个X射线投射，同时使用x射线源。 在本方法的至少一个实施例中，表征外部对象轮廓的参数在扫描平面中从不同X射线投影的测量数据确定。 在至少一个实施例中，基于一个对象轮廓部分，其特征参数已经由位于相应x射线投影前面和/或后面的X射线投影确定了一个限定的投影角度范围，对于每个x 射线投影然后检索分配的散射辐射分布，或者从数据库中插入具有相似特征参数的物体轮廓部分的散射辐射分布。 然后将这种散射的辐射分布用于校正各个X射线投影的测量数据。 在至少一个实施例中，该方法结合X射线源的操作实现散射辐射校正。