公开(公告)号：US08699772B2

公开(公告)日：2014-04-15

申请号：US12892011

申请日：2010-09-28

申请人： Thomas Allmendinger ,  Jörg Hausleiter ,  Heiko Mehldau ,  Carsten Thierfelder

发明人： Thomas Allmendinger ,  Jörg Hausleiter ,  Heiko Mehldau ,  Carsten Thierfelder

IPC分类号： G06K9/00

CPC分类号： A61B6/481 ,  A61B5/0456 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4266 ,  A61B6/466 ,  A61B6/482 ,  A61B6/503 ,  A61B6/504 ,  A61B6/507 ,  A61B6/5288 ,  A61B6/541

摘要： A method is disclosed for scanning a cyclically moved examination object using a contrast agent within the scope of a preliminary examination by way of a CT scanner, in which measurement data is recorded at a sequence of recording times. A first image is reconstructed at every recording time from the measurement data, from which a time profile of a concentration of the contrast agent is established. The recording times for respectively recording a certain phase of the motion are synchronized with a motion signal from the examination object. A second image with a time offset with respect to the first image is reconstructed from the measurement data at each recording time. A motion curve representing a time profile of an intensity of the cyclical motion is established by comparing the first image and the second image at each recording time.

摘要翻译： 公开了一种用于通过CT扫描仪在初步检查范围内使用造影剂扫描循环移动的检查对象的方法，其中测量数据以记录次序记录。 在每个记录时间从测量数据重建第一图像，从中建立造影剂的浓度的时间曲线。 用于分别记录运动的某一相位的记录时间与来自检查对象的运动信号同步。 在每个记录时间从测量数据重建相对于第一图像具有时间偏移的第二图像。 通过在每个记录时间比较第一图像和第二图像来建立表示循环运动强度的时间曲线的运动曲线。

公开(公告)号：US20110075906A1

公开(公告)日：2011-03-31

申请号：US12892011

申请日：2010-09-28

申请人： Thomas ALLMENDINGER ,  Jörg Hausleiter ,  Heiko Mehldau ,  Carsten Thierfelder

发明人： Thomas ALLMENDINGER ,  Jörg Hausleiter ,  Heiko Mehldau ,  Carsten Thierfelder

IPC分类号： G06K9/00

CPC分类号： A61B6/481 ,  A61B5/0456 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4266 ,  A61B6/466 ,  A61B6/482 ,  A61B6/503 ,  A61B6/504 ,  A61B6/507 ,  A61B6/5288 ,  A61B6/541

摘要： A method is disclosed for scanning a cyclically moved examination object using a contrast agent within the scope of a preliminary examination by way of a CT scanner, in which measurement data is recorded at a sequence of recording times, and in which a first image is reconstructed at every recording time from the measurement data, from which a time profile of a concentration of the contrast agent is established. In at least one embodiment, the recording times for respectively recording a certain phase of the motion are synchronized with a motion signal from the examination object, wherein a second image with a small time offset with respect to the first image is reconstructed from the measurement data at each recording time, and wherein a motion curve representing a time profile of an intensity of the cyclical motion is established by comparing the first image and the second image at each recording time. As such, motion information can also be obtained from the mandatory preliminary examination with a minimally increased dose. A corresponding CT scanner and a computer program are also disclosed.

摘要翻译： 公开了一种用于在CT扫描仪的初步检查范围内使用造影剂扫描循环移动的检查对象的方法，其中测量数据以记录时间序列记录，并且其中重建第一图像 在测量数据的每个记录时间，建立造影剂浓度的时间曲线。 在至少一个实施例中，用于分别记录运动的某一相位的记录时间与来自检查对象的运动信号同步，其中相对于第一图像具有小时间偏移的第二图像从测量数据重建 并且其中通过在每个记录时间比较第一图像和第二图像来建立表示循环运动的强度的时间曲线的运动曲线。 因此，运动信息也可以从强制性初步检查中以最小增加的剂量获得。 还公开了相应的CT扫描器和计算机程序。

公开(公告)号：US08718342B2

公开(公告)日：2014-05-06

申请号：US12729267

申请日：2010-03-23

申请人： Dominik Bernhardt ,  Jörg Hausleiter ,  Carsten Thierfelder ,  Johann Uebler ,  Fernando Vega-Higuera

发明人： Dominik Bernhardt ,  Jörg Hausleiter ,  Carsten Thierfelder ,  Johann Uebler ,  Fernando Vega-Higuera

IPC分类号： G06K9/00

CPC分类号： A61B6/481 ,  A61B5/02007 ,  A61B6/032 ,  A61B6/504 ,  G06T7/0012 ,  G06T7/11 ,  G06T7/136 ,  G06T7/70 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2207/30101

摘要： A method and a data-processing system are disclosed for determining the proportion of calcium in coronary arteries using image data from CT angiography. In at least one embodiment of the method, anatomical landmarks are detected in the image data in the region of the heart and coronary arteries are segmented taking into account the detected landmarks. Regions with an increased HU value compared to a contrast agent surroundings are segmented in the segmented coronary arteries. A proportion of calcium respectively is calculated from the segmented regions for one or more of the segmented coronary arteries. At least the last two steps are carried out fully automatically by a data-processing system. Weighting factors for the individual regions are used when calculating the proportion of calcium, which weighting factors depend on both the threshold for segmenting the respective region and the volume of said region. The method and the data-processing system of at least one embodiment allow the dose exposure of the patient to be reduced and reduce the time expenditure of the user for determining the proportion of calcium.

摘要翻译： 公开了一种使用来自CT血管造影术的图像数据来确定冠状动脉中钙的比例的方法和数据处理系统。 在该方法的至少一个实施例中，在心脏区域中的图像数据中检测解剖标志，并且考虑到检测到的界标来分割冠状动脉。 在分割冠状动脉中分割具有与造影剂周围环境相比增加的HU值的区域。 对于一个或多个分割冠状动脉的分割区域分别计算一部分钙。 至少最后两个步骤由数据处理系统完全自动执行。 当计算钙的比例时，使用各个区域的权重因子，该加权因子取决于分割各个区域的阈值和所述区域的体积。 至少一个实施方案的方法和数据处理系统允许减少患者的剂量暴露并减少用户确定钙的比例的时间支出。

公开(公告)号：US20100260400A1

公开(公告)日：2010-10-14

申请号：US12729267

申请日：2010-03-23

申请人： Dominik Bernhardt ,  Jörg Hausleiter ,  Carsten Thierfelder ,  Johann Uebler ,  Fernando Vega-Higuera

发明人： Dominik Bernhardt ,  Jörg Hausleiter ,  Carsten Thierfelder ,  Johann Uebler ,  Fernando Vega-Higuera

IPC分类号： G06T7/00

CPC分类号： A61B6/481 ,  A61B5/02007 ,  A61B6/032 ,  A61B6/504 ,  G06T7/0012 ,  G06T7/11 ,  G06T7/136 ,  G06T7/70 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2207/30101

摘要： A method and a data-processing system are disclosed for determining the proportion of calcium in coronary arteries using image data from CT angiography. In at least one embodiment of the method, anatomical landmarks are detected in the image data in the region of the heart and coronary arteries are segmented taking into account the detected landmarks. Regions with an increased HU value compared to a contrast agent surroundings are segmented in the segmented coronary arteries. A proportion of calcium respectively is calculated from the segmented regions for one or more of the segmented coronary arteries. At least the last two steps are carried out fully automatically by a data-processing system. Weighting factors for the individual regions are used when calculating the proportion of calcium, which weighting factors depend on both the threshold for segmenting the respective region and the volume of said region. The method and the data-processing system of at least one embodiment allow the dose exposure of the patient to be reduced and reduce the time expenditure of the user for determining the proportion of calcium.

摘要翻译： 公开了一种使用来自CT血管造影术的图像数据来确定冠状动脉中钙的比例的方法和数据处理系统。 在该方法的至少一个实施例中，在心脏区域中的图像数据中检测解剖标志，并且考虑到检测到的界标来分割冠状动脉。 在分割冠状动脉中分割具有与造影剂周围环境相比增加的HU值的区域。 对于一个或多个分割冠状动脉的分割区域分别计算一部分钙。 至少最后两个步骤由数据处理系统完全自动执行。 当计算钙的比例时，使用各个区域的权重因子，该加权因子取决于分割各个区域的阈值和所述区域的体积。 至少一个实施方案的方法和数据处理系统允许减少患者的剂量暴露并减少用户确定钙的比例的时间支出。