Selection method for two contrast media for use in a dual-energy CT examination, contrast media combination and generation of CT images using a contrast media combination and different energy spectra
    1.
    发明授权
    Selection method for two contrast media for use in a dual-energy CT examination, contrast media combination and generation of CT images using a contrast media combination and different energy spectra 有权
    用于双能CT检查,造影剂组合和使用造影剂组合和不同能谱的CT图像生成的两种造影剂的选择方法

    公开(公告)号:US09211104B2

    公开(公告)日:2015-12-15

    申请号:US12451648

    申请日:2008-05-19

    IPC分类号: A61B8/08 A61B6/00 A61B6/03

    CPC分类号: A61B6/482 A61B6/032 A61B6/481

    摘要: A method is disclosed for selecting two contrast agents to be used in a dual energy CT examination of a patient. In at least one embodiment, the method includes determining the gradient of a connecting line between a first material or a first tissue type and a second material or second tissue type in an HU value diagram of the energy-specific HU values, selecting a first contrast agent with an enhancement gradient which is significantly greater than the determined base gradient, and selecting a second contrast agent, the enhancement of which lies in the significance region of the determined base gradient. A contrast agent combination selected in the fashion is also disclosed in at least one embodiment, as well as the generation of CT images using a contrast agent combination selected in the fashion and using different energy spectra.

    摘要翻译: 公开了一种用于选择要用于患者的双能CT检查中的两种造影剂的方法。 在至少一个实施例中,该方法包括在能量特异性HU值的HU值图中确定第一材料或第一组织类型和第二材料或第二组织类型之间的连接线的梯度,选择第一对比度 其具有明显大于所确定的基础梯度的增强梯度,以及选择第二造影剂,其增强位于所确定的基础梯度的有效区域中。 在至少一个实施方案中还公开了以该方式选择的造影剂组合,以及使用以该方式选择并使用不同能量谱的造影剂组合产生CT图像。

    Method for the reduction of image artifacts, in particular of metal artifacts, in CT image data
    2.
    发明授权
    Method for the reduction of image artifacts, in particular of metal artifacts, in CT image data 有权
    在CT图像数据中减少图像伪像,特别是金属伪影的方法

    公开(公告)号:US08634625B2

    公开(公告)日:2014-01-21

    申请号:US13107302

    申请日:2011-05-13

    IPC分类号: G06K9/00

    摘要: A method is disclosed for the reduction of image artifacts, in particular metal artifacts, during the generation of computed tomography image data of an object. In at least one embodiment of the method, two CT image data sets are generated with different medium x-ray energies. By way of a weighted combination of the two CT image data sets, a new image data set is calculated. The weighting factor employed in the weighted combination is here selected in such a way that the image artifacts in the new CT image data set are significantly reduced compared with the image artifacts in the two original CT image data sets. In this way it is possible in a simple manner significantly to reduce in particular metal artifacts in CT images.

    摘要翻译: 公开了一种在物体的计算机断层摄影图像数据的生成期间减少图像伪影,特别是金属伪像的方法。 在该方法的至少一个实施例中,使用不同的中等x射线能量生成两个CT图像数据集。 通过两个CT图像数据集的加权组合,计算新的图像数据集。 在加权组合中使用的加权因子在这里被选择,使得与两个原始CT图像数据集中的图像伪像相比,新CT图像数据集中的图像伪影显着减少。 以这种方式,可以以简单的方式显着地减少CT图像中的特定金属伪影。

    Methods, apparatuses and computer readable mediums for generating images based on multi-energy computed tomography data
    3.
    发明授权
    Methods, apparatuses and computer readable mediums for generating images based on multi-energy computed tomography data 有权
    用于基于多能计算机断层摄影数据生成图像的方法,装置和计算机可读介质

    公开(公告)号:US07920669B2

    公开(公告)日:2011-04-05

    申请号:US12010920

    申请日:2008-01-31

    IPC分类号: A61B6/00

    摘要: Methods, apparatuses and computer readable mediums for generating a volume visualization image based on multi-energy computed tomography data are provided. In one method, an image is rendered based on a multi-dimensional graphical representation of the computed tomography data. The computed tomography data includes at least two different energy image data sets and the multi-dimensional graphical representation represents intensity values of each of the at least two different energy image data sets.

    摘要翻译: 提供了用于基于多能计算机断层摄影数据生成体视觉图像的方法,装置和计算机可读介质。 在一种方法中,基于计算机断层摄影数据的多维图形表示来渲染图像。 计算机断层摄影数据包括至少两个不同的能量图像数据集,并且所述多维图形表示表示所述至少两个不同能量图像数据集中的每一个的强度值。