公开(公告)号：US06959067B2

公开(公告)日：2005-10-25

申请号：US10022383

申请日：2001-10-30

申请人： Volker Rasche ,  Steffen Weiss ,  Johannes Catharina Antonius Op De Beek

发明人： Volker Rasche ,  Steffen Weiss ,  Johannes Catharina Antonius Op De Beek

IPC分类号： A61B6/00

CPC分类号： A61B6/541 ,  A61B6/481 ,  A61B6/504

摘要： An X-ray imaging method comprises forming 2-dimensional X-ray images of an object to be examined, for example the coronary vascular system of a patient, and reconstruction of a 3-dimensional volume thereof. With a relatively long run length of a scan rotation over substantially 180° of at least 15 sec. and preferably about 20 sec. A sufficient number of images is obtained to perform a more accurate volume reconstruction. This reconstruction method may be combined with existing modelling techniques.

摘要翻译： X射线成像方法包括形成待检查对象的2维X射线图像，例如患者的冠状血管系统，以及其3维体积的重建。 具有在大约180°至少15秒的扫描旋转的相对较长的行程长度。 优选约20秒。 获得足够数量的图像以执行更精确的体积重建。 这种重建方法可以与现有的建模技术相结合。

公开(公告)号：US20050185831A1

公开(公告)日：2005-08-25

申请号：US10516151

申请日：2003-05-21

申请人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

发明人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

IPC分类号： A61B6/02 ,  A61B6/00 ,  G06T7/00 ,  G06T7/60 ,  G06K9/00

CPC分类号： G06T7/60 ,  G06T7/593 ,  G06T2207/30101 ,  Y10S128/922

摘要： A method is provided for analysis of a multi-dimensional structure which includes a tubular structure from two-dimensional datasets for respective pre-determined projection directions. A pair of corresponding initial projected centre points of the tubular structure is identified in two respective initial and further two-dimensional datasets. Projected edges of the tubular structure in said initial two-dimensional datasets and in said further two-dimensional dataset near the respective projected centre points are identified. A local size of the tubular strucwur is derived at the three-dimensional spatial position of the centre point of the tubular structure from said projected edges and the predetermined projection directions.

摘要翻译： 提供了一种用于分析多维结构的方法，其包括用于各个预定投影方向的二维数据集的管状结构。 在两个相应的初始和进一步的二维数据集中识别管状结构的一对相应的初始投影中心点。 识别所述初始二维数据集中的所述管状结构的投影边缘和在相应的投影中心点附近的所述另外的二维数据集中。 在管状结构的中心点从所述投影边缘和预定投影方向的三维空间位置导出管状结构的局部尺寸。

公开(公告)号：US5823959A

公开(公告)日：1998-10-20

申请号：US795489

申请日：1997-02-05

申请人： Volker Rasche

发明人： Volker Rasche

IPC分类号： G01R33/387 ,  A61B5/055 ,  G01R33/54

CPC分类号： G01R33/54

摘要： The invention relates to an MR method for determining the frequency map in an examination zone as well as to an appropriate sequence in which the nuclear magnetization is read in conjunction with the read gradient of varying direction. Subsequent to an excitation of the nuclear magnetization, a plurality of MR echo signals are acquired. From the sub-images acquired with different echo times on the one hand the frequency map can be derived whereas on the other hand these sub-images can be combined so as to form an MR overall image of higher spatial resolution. The invention also relates to a device for carrying out this method.

摘要翻译： 本发明涉及一种用于确定检查区域中频率图的MR方法以及结合变化方向的读取梯度来读取核磁化的适当序列。 在核磁化的激发之后，获取多个MR回波信号。 一方面，从不同的回波时间获取的子图像可以得到频率图，而另一方面可以组合这些子图像，以形成更高空间分辨率的MR整体图像。 本发明还涉及一种用于执行该方法的装置。

公开(公告)号：US5498961A

公开(公告)日：1996-03-12

申请号：US207529

申请日：1994-03-07

申请人： Michael H. Kuhn ,  Volker Rasche ,  Roland Proksa

发明人： Michael H. Kuhn ,  Volker Rasche ,  Roland Proksa

IPC分类号： A61B5/055 ,  G01R33/54 ,  G01R33/567 ,  G01V3/14

CPC分类号： G01R33/56383

摘要： The invention relates to an MR method for two-dimensional or three-dimensional imaging of an examination zone, in which a set of raw data is measured repeatedly, an image of the examination zone can be reconstructed from each set, and the raw data of a set is acquired with different measurement parameters, and different sets contain raw data acquired with the same measurement parameters. Improved temporal resolution is achieved in that a set of auxiliary data is formed from at least two sets of raw data in order to produce an image representing the examination zone at a selectable instant, the auxiliary data being derived by interpolation from the raw data acquired with each time the same measurement parameters but at different measurement instants, the weight applied to the raw data entering the interpolation being greater as the time interval between the associated measurement instant and the selectable instant is smaller, the image of the examination zone being reconstructed from the set of auxiliary data.

摘要翻译： 本发明涉及一种用于检查区域的二维或三维成像的MR方法，其中重复测量一组原始数据，可以从每个组重建检查区域的图像，并且原始数据 采集不同测量参数的集合，不同的集合包含采用相同测量参数获得的原始数据。 通过从至少两组原始数据形成一组辅助数据，以在可选择的时刻产生表示检查区域的图像，辅助数据通过从用 每次相同的测量参数，但是在不同的测量时刻，施加到进入插值的原始数据的权重随着相关联的测量时刻和可选择时刻之间的时间间隔而变大，则检查区域的图像从 一组辅助数据。

公开(公告)号：US07729743B2

公开(公告)日：2010-06-01

申请号：US10541624

申请日：2003-12-19

申请人： Jörg Sabczynski ,  Volker Rasche

发明人： Jörg Sabczynski ,  Volker Rasche

IPC分类号： A61B8/00 ,  G01N23/00

CPC分类号： A61B6/12 ,  A61B5/06 ,  A61B5/062

摘要： The invention relates to a method and an arrangement for the intravascular or intracardial navigation of a catheter (5). Using an X-ray fluoroscopy device (1), firstly an image database of 2D images is generated, where at the same time as each 2D image (I) is taken the associated heartbeat phase is recorded using an ECG (8). During the catheter intervention, the position of the catheter (5) is measured by means of a position measurement unit (6), and at the same time the ECG and preferably also a signal that is dependent on the breathing movement are recorded. The current spatial position of the catheter (5) that is measured is then assigned the 2D image of the image database which corresponds in terms of the heartbeat phase and also possibly in terms of the breathing phase, on which image the position of the catheter can be represented.

摘要翻译： 本发明涉及用于导管（5）的血管内或心内导航的方法和装置。 使用X射线透视装置（1），首先生成2D图像的图像数据库，其中在采用每个2D图像（I）的同时，使用ECG（8）记录相关的心跳相位。 在导管介入期间，通过位置测量单元（6）测量导管（5）的位置，并且同时记录ECG并且优选地还取决于呼吸运动的信号。 然后将所测量的导管（5）的当前空间位置分配给图像数据库的2D图像，该图像数据库在心跳相位方面对应，并且还可以根据呼吸阶段，导管的位置在哪个图像上 被代表。

公开(公告)号：US07706589B2

公开(公告)日：2010-04-27

申请号：US10516151

申请日：2003-05-21

申请人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

发明人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

IPC分类号： G06K9/00

CPC分类号： G06T7/60 ,  G06T7/593 ,  G06T2207/30101 ,  Y10S128/922

摘要： A method is provided for analysis of a multi-dimensional structure which includes a tubular structure from two-dimensional datasets for respective pre-determined projection directions. A pair of corresponding initial projected centre points of the tubular structure is identified in two respective initial and further two-dimensional datasets. Projected edges of the tubular structure in said initial two-dimensional datasets and in said further two-dimensional dataset near the respective projected centre points are identified. A local size of the tubular structure is derived at the three-dimensional spatial position of the centre point of the tubular structure from said projected edges and the predetermined projection directions.

摘要翻译： 提供了一种用于分析多维结构的方法，其包括用于各个预定投影方向的二维数据集的管状结构。 在两个相应的初始和进一步的二维数据集中识别管状结构的一对相应的初始投影中心点。 识别所述初始二维数据集中的所述管状结构的投影边缘和在相应的投影中心点附近的所述另外的二维数据集中。 在管状结构的中心点从所述投影边缘和预定投影方向的三维空间位置导出管状结构的局部尺寸。

公开(公告)号：US20080198972A1

公开(公告)日：2008-08-21

申请号：US12065616

申请日：2006-09-12

申请人： Volker Rasche

发明人： Volker Rasche

IPC分类号： H05G1/02

CPC分类号： A61B6/0457 ,  A61B6/4441 ,  A61B6/469 ,  A61B6/542

摘要： Iso-centering a volume of interest (VOI) (170) within a patient (168) to undergo examination on a rotational X-ray apparatus (100) is achieved by taking two differently-angled pictures (S210) and updating positional settings (172) for the patient's table (112) responsive to respectively displayed centering of the VOI (152). Alternatively, the operator identifies respective VOI centers (S410, S450) for each of the two displayed pictures, and corresponding table movement is automatically calculated (S420).

摘要翻译： 通过采取两个不同角度的图像（S1010）和更新位置设置（S101）来实现在患者（168）内对感兴趣的体积（VOI）（170）进行异对中以在旋转X射线装置（100）上进行检查， 172）用于响应于分别显示的VOI的对中（152）的患者的桌子（112）。 或者，操作者为两个显示的图像中的每一个识别各自的VOI中心（S 410，S 450），并且自动计算相应的表移动（S 420）。

公开(公告)号：US20080188749A1

公开(公告)日：2008-08-07

申请号：US11910620

申请日：2006-04-04

申请人： Volker Rasche ,  Raoul Florent ,  Olivier Gerard

发明人： Volker Rasche ,  Raoul Florent ,  Olivier Gerard

IPC分类号： A61B8/00

CPC分类号： A61B8/0841 ,  A61B8/0833 ,  A61B8/483

摘要： The present invention relates to an intervention guidance system in which the location of an interventional medical device (30) within a body volume is determined by image processing means (14) from live, three-dimensional ultrsound images thereof, and this localisation is used to generate a control signal for steering an ultrasound beam (20) so as to alter the imaging plane (or region of interest 235) in accordance with the relative location within the body volume of the intervention device (30). The use of image processing techniques to localise the intervention device (30) obviates the need for specific locations on the device.

摘要翻译： 本发明涉及一种干预引导系统，其中介体医疗装置（30）在体积内的位置由图像处理装置（14）从其活体立体超声图像确定，并且该定位被用于 产生用于转向超声波束（20）的控制信号，以便根据介入装置（30）的体积内的相对位置来改变成像平面（或感兴趣的区域235）。 使用图像处理技术来定位干预装置（30），从而避免了对装置上特定位置的需要。

公开(公告)号：US20080037700A1

公开(公告)日：2008-02-14

申请号：US11570778

申请日：2005-06-24

申请人： Michael Grass ,  Volker Rasche

发明人： Michael Grass ,  Volker Rasche

IPC分类号： A61B6/03

CPC分类号： G06T11/005 ,  A61B6/027 ,  G06T2211/404 ,  G06T2211/412 ,  G06T2211/416

摘要： The invention relates to an examination apparatus and a method for perfusion studies in a patient (1). According to the method, a rotational X-ray device (10) is moved on a closed, preferably non-planar trajectory (T) while continuously generating projections of the patient (1) after the injection of a contrast agent with an injection device (20). The projections are used by a data processing system (30) in a sliding window technique to reconstruct three-dimensional images of the body volume. The resulting sequence of 3D images may be displayed on a monitor (31) to reveal the desired information about the perfusion process.

摘要翻译： 本发明涉及一种用于患者（1）中的灌注研究的检查装置和方法。 根据该方法，旋转X射线装置（10）在闭合的，优选非平面的轨迹（T）上移动，同时在用注射装置注射造影剂之后连续产生患者（1）的突起 20）。 数据处理系统（30）在滑动窗口技术中使用投影来重建身体体积的三维图像。 所得到的3D图像序列可以显示在监视器（31）上，以显示关于灌注过程的期望信息。

公开(公告)号：US07277565B2

公开(公告)日：2007-10-02

申请号：US10481808

申请日：2002-06-13

申请人： Volker Rasche ,  Michael Grass

发明人： Volker Rasche ,  Michael Grass

IPC分类号： G06K9/00

CPC分类号： G06T11/005 ,  G06T2211/412

摘要： The invention relates to a method of reconstructing a high-resolution 3D image (G) of an examination zone of a patient from a 3D image data set (D) of the examination zone, the examination zone being subject to a periodic motion which is measured, in parallel with the acquisition of the 3D image data set (D), as a motion signal (E) which represents the periodic motion. In order to enable the formation of high-resolution 3D images having an enhanced image quality, the invention proposes a method of this kind which includes the following steps: a) reconstructing a number of low-resolution 3D images (I) from the 3D image data set (D), the low-resolution 3D images (I) being reconstructed from 3D image data of the 3D image data set (D) which has been acquired during different phases of motion of the periodic motion, b) determining motion information (B) of at least one sub-zone (A) of the examination zone during the different phases of motion by means of the low-resolution 3D images (I), c) selecting a temporal reconstruction window (T) in which the motion of the at least one sub-zone (A) is below a predetermined level, d) reconstructing a high-resolution sub-image (K) for the at least one sub-zone (A) from 3D image data (D) lying in the temporal reconstruction window (T) selected for the sub-zone (A), and e) forming the desired 3D image (G) from the at least one sub-image (K), the zones of the 3D image (G) which are not reconstructed as sub-images then being reconstructed from the 3D image data so as to be combined with the at least one sub-image (K).

摘要翻译： 本发明涉及从检查区域的3D图像数据集（D）重建患者检查区域的高分辨率3D图像（G）的方法，检查区域经受测量的周期性运动 与3D图像数据集（D）的获取并行，作为表示周期性运动的运动信号（E）。 为了能够形成具有增强图像质量的高分辨率3D图像，本发明提出了一种这样的方法，其包括以下步骤：a）从3D图像重建多个低分辨率3D图像（I） 数据组（D），从在周期运动的不同运动阶段获取的3D图像数据组（D）的3D图像数据重建低分辨率3D图像（I），b）确定运动信息（ B）通过低分辨率3D图像（I）在不同运动阶段期间的检查区域的至少一个子区域（A），c）选择时间重建窗口（T），其中运动 所述至少一个子区域（A）低于预定水平，d）从位于所述至少一个子区域（A）的3D图像数据（D）重建所述至少一个子区域（A）的高分辨率子图像（K） 对于子区域（A）选择的时间重建窗口（T），以及e）从at1形成期望的3D图像（G） 东一个子图像（K），未被重建为子图像的3D图像（G）的区域然后从3D图像数据重建，以便与至少一个子图像（K）组合， 。