IMAGING SYSTEM FOR IMAGING AN OBJECT
    41.
    发明申请
    IMAGING SYSTEM FOR IMAGING AN OBJECT 有权
    用于成像对象的成像系统

    公开(公告)号:US20130279778A1

    公开(公告)日:2013-10-24

    申请号:US13978166

    申请日:2012-01-04

    IPC分类号: G06T11/00

    摘要: The invention relates to an imaging system for imaging an object. Projection data of the object are acquired by using a radiation source emitting primary radiation (14) from a primary focal spot (15) and unwanted secondary radiation (16) from secondary focal spots (17). A first image of the object is reconstructed from the acquired projection data, a forward projection of the secondary radiation through the first image is simulated for generating secondary projection data, and a second image is generated based on the acquired projection data and the secondary projection data. Since the secondary projection data, which can generally cause image artifacts, are determined, the reconstruction unit can consider these unwanted secondary projection data while reconstructing the second image, in order to reduce the influence of the secondary projection data on the reconstructed second image, thereby improving the image quality.

    摘要翻译: 本发明涉及一种用于对物体成像的成像系统。 通过使用从主焦点(15)发射主要辐射(14)的辐射源和来自次焦点(17)的不期望的次级辐射(16))来获取对象的投影数据。 从获取的投影数据重建物体的第一图像,模拟通过第一图像的次级辐射的向前投影用于产生二次投影数据,并且基于所获取的投影数据和二次投影数据生成第二图像 。 由于确定了通常可以引起图像伪影的二次投影数据,所以重建单元可以在重构第二图像的同时考虑这些不需要的二次投影数据,以便减少二次投影数据对重构的第二图像的影响,由此 提高图像质量。

    REGULARIZED PHASE RETRIEVAL IN DIFFERENTIAL PHASE-CONTRAST IMAGING
    42.
    发明申请
    REGULARIZED PHASE RETRIEVAL IN DIFFERENTIAL PHASE-CONTRAST IMAGING 有权
    不同阶段相对成像中的定期相位检索

    公开(公告)号:US20130156284A1

    公开(公告)日:2013-06-20

    申请号:US13820179

    申请日:2011-09-01

    IPC分类号: G06T11/00

    摘要: The present invention relates to differential phase-contrast imaging of an object (108). When reconstructing image information from differential phase-contrast image data, streak- like artefacts (502) may occur. The artefacts (502) may substantially reduce legibility of reconstructed image data. Accordingly, it may be beneficial for removing or at least suppressing said artefacts (502). Thus, a method (400) for regularized phase retrieval in phase-contrast imaging is provided comprising receiving (402) differential phase-contrast image data of an object (108); generating (404) reconstructed image data of an object (108) and presenting (406) reconstructed image data of the object (108). The differential phase-contrast image and the reconstructed image data comprise a two-dimensional data structure having a first dimension and a second dimension. Generating reconstructed image data comprises integration of image data in one of the first dimension and the second dimension of the data structure. A gradient operator is determined in the other one of the first dimension and second dimension of the data structure and the data structure is employed for reconstructing image data resulting in a reduction of artefacts (500) within the reconstructed image data.

    摘要翻译: 本发明涉及物体(108)的差分相位对比成像。 当从差分相位差图像数据重建图像信息时,可能会出现条纹状伪像(502)。 人造物(502)可以大大降低重构图像数据的可读性。 因此,去除或至少抑制所述伪影(502)可能是有益的。 因此,提供了一种用于相位对比成像中的正则化相位检索的方法(400),包括:接收(402)对象(108)的差分相位对比图像数据; 生成(404)对象(108)的重建图像数据并呈现(406)对象(108)的重建图像数据。 差分相位对比图像和重构图像数据包括具有第一维度和第二维度的二维数据结构。 生成重构图像数据包括将图像数据集成在数据结构的第一维度和第二维度之一中。 在数据结构的第一维度和第二维度中的另一个维度中确定梯度算子,并且采用数据结构来重建图像数据,导致重构图像数据内的伪像(500)的减少。

    MOTION COMPENSATION WITH TISSUE DENSITY RETENTION
    43.
    发明申请
    MOTION COMPENSATION WITH TISSUE DENSITY RETENTION 有权
    运动补偿与组织密度保持

    公开(公告)号:US20120237097A1

    公开(公告)日:2012-09-20

    申请号:US13510153

    申请日:2010-11-18

    IPC分类号: G06K9/00

    CPC分类号: G06T11/008 G06T2211/412

    摘要: A method includes reconstructing the projection data based on a reconstruction algorithm that compensates for both motion and tissue density changes of the moving organ across different motion phases, thereby generating motion and density compensated image data. A data compensator includes a reconstructor that reconstructs motion compensated image data based on an reconstruction algorithm that compensates for tissue density changes in a moving object.

    摘要翻译: 一种方法包括基于补偿运动器官在不同运动相位上的运动和组织密度变化的重建算法重建投影数据,从而产生运动和密度补偿图像数据。 数据补偿器包括重建器,其基于补偿移动物体中的组织密度变化的重建算法重建运动补偿图像数据。

    STABILIZED MICROBICIDAL COMPOSITION
    44.
    发明申请
    STABILIZED MICROBICIDAL COMPOSITION 审中-公开
    稳定的微生物组合物

    公开(公告)号:US20120165376A1

    公开(公告)日:2012-06-28

    申请号:US13323948

    申请日:2011-12-13

    IPC分类号: A01N37/34 A01N43/80 A01P1/00

    摘要: A microbicidal composition having at least four components. The first component is 2-25 wt % of 2,2-dibromo-3-nitrilopropionamide. The second component is 2-30 wt % water. The third component is 5-30 wt % of an aliphatic compound having 2-6 hydroxyl groups. The fourth component is 20-70 wt % of a glycol solvent.

    摘要翻译: 具有至少四种组分的杀微生物组合物。 第一组分为2,2-二溴-3-次氮基丙酰胺的2-25重量%。 第二组分为2-30重量%的水。 第三成分为5-30重量%的具有2-6个羟基的脂肪族化合物。 第四组分是二醇溶剂的20-70重量%。

    ACHROMATIC PHASE-CONTRAST IMAGING
    45.
    发明申请
    ACHROMATIC PHASE-CONTRAST IMAGING 有权
    高级相对成像

    公开(公告)号:US20120020461A1

    公开(公告)日:2012-01-26

    申请号:US13260424

    申请日:2010-03-19

    IPC分类号: G01N23/20

    摘要: An achromatic phase-contrast imaging apparatus for examining an object of interest is provided which comprises two different phase gratings which have different pitches. Thus, the imaging apparatus yields phase-contrast information for two different energies. Thus, phase-information over a wider energy band can be used.

    摘要翻译: 提供一种用于检查感兴趣对象的消色差相位对比成像装置,其包括具有不同间距的两个不同的相位光栅。 因此,成像装置产生两个不同能量的相位对比度信息。 因此,可以使用较宽能带上的相位信息。

    GRADIENT COIL NOISE MASKING FOR MPI DEVICE
    46.
    发明申请
    GRADIENT COIL NOISE MASKING FOR MPI DEVICE 审中-公开
    用于MPI设备的梯度线圈噪声掩蔽

    公开(公告)号:US20110142250A1

    公开(公告)日:2011-06-16

    申请号:US13058230

    申请日:2009-08-11

    IPC分类号: H04R3/02

    摘要: When subjecting a patient to an MRI scan, noise generated by gradient coils in an MRI device is beautified by playing a complementary musical piece that matches the gradient coil noise in one or both of tempo and musical key. Complementary musical pieces (e.g., songs, tunes, melodies, etc.) are pre-generated for specific gradient coil sequences. Upon selection of one or more sequences to be executed during an MR scan, complementary musical pieces for the selected sequence(s) are identified and played back to a patient in the bore of the MRI device during the scan to alleviate patient stress. Tempo and/or musical key of the complementary musical pieces is adjustable (a priori or in real time) to synchronize the complementary musical piece(s) to a specific gradient sequence both rhythmically and harmonically.

    摘要翻译: 当患者进行MRI扫描时,通过在节奏和音乐键中的一个或两个中播放与梯度线圈噪声相匹配的互补乐曲来美化MRI设备中的梯度线圈产生的噪声。 为特定的梯度线圈序列预先生成补充音乐作品(例如,歌曲,曲调,旋律等)。 在选择在MR扫描期间要执行的一个或多个序列时,在扫描期间识别所选序列的补充音乐片段并将其回放到MRI装置的孔中的患者以减轻患者压力。 互补音乐作品的速度和/或音乐键可以调整(先验或实时),以便将互补乐曲节奏地和谐音地同步到特定的梯度序列。

    DETECTION SETUP FOR X-RAY PHASE CONTRAST IMAGING
    47.
    发明申请
    DETECTION SETUP FOR X-RAY PHASE CONTRAST IMAGING 有权
    用于X射线相位对比成像的检测设置

    公开(公告)号:US20100272230A1

    公开(公告)日:2010-10-28

    申请号:US12744070

    申请日:2008-11-19

    申请人: Thomas Koehler

    发明人: Thomas Koehler

    IPC分类号: G01N23/02

    摘要: The invention relates to a method and a device for generating phase contrast X-ray images of an object (1). The device comprises an X-ray source (10) that may for example be realized by a spatially extended emitter (11) behind a grating (G0). A diffractive optical element (DOE), for example a phase grating (G1), generates an interference pattern (I) from the X-radiation that has passed the object (1), and a spectrally resolving X-ray detector (30) is used to measure this interference pattern behind the DOE. Using the information obtained for different wavelengths/energies of X-radiation, the phase shift induced by the object can be reconstructed.

    摘要翻译: 本发明涉及一种用于产生对象(1)的相差X射线图像的方法和装置。 该装置包括例如可以由光栅(G0)后面的空间扩展的发射器(11)实现的X射线源(10)。 衍射光学元件(DOE),例如相位光栅(G1),从已经通过物体(1)的X射线产生干涉图案(I),光谱分辨X射线检测器(30)是 用于测量DOE背后的干扰模式。 使用对于X射线的不同波长/能量获得的信息,可以重建由对象引起的相移。

    Cone beam computed tomography with multiple partial scanning trajectories
    48.
    发明授权
    Cone beam computed tomography with multiple partial scanning trajectories 失效
    具有多个部分扫描轨迹的锥束计算机断层扫描

    公开(公告)号:US07822171B2

    公开(公告)日:2010-10-26

    申请号:US12296945

    申请日:2006-04-19

    IPC分类号: A61B6/00

    摘要: A computer tomography apparatus (100) for examination of an object of interest (107) comprising an electromagnetic radiation source (104) adapted to emit electromagnetic radiation to an object of interest (107), a detecting device (108) adapted to detect electromagnetic radiation generated by the electromagnetic radiation source (104) and passed through the object of interest (107), and a motion generation device (101, 119) adapted to move the electromagnetic radiation source (104) and the detecting device (108) with respect to the object of interest (107) along a first trajectory and along a second trajectory which differs from the first trajectory, wherein the second trajectory is selected in such a manner that electromagnetic radiation detected during performing the second trajectory provides data which complete mathematically incomplete data detected during performing the first trajectory to thereby allow a reconstruction of structural information concerning the object of interest (107).

    摘要翻译: 一种用于检查感兴趣对象(107)的计算机断层摄影装置(100),包括适于向感兴趣对象(107)发射电磁辐射的电磁辐射源(104),适于检测电磁辐射的检测装置 由电磁辐射源(104)产生并通过感兴趣物体(107)的运动产生装置(101,119),适于相对于电磁辐射源(104)和检测装置(108)移动 感兴趣的物体(107)沿着第一轨迹并且沿着与第一轨迹不同的第二轨迹,其中以这样的方式选择第二轨迹,使得在执行第二轨迹期间检测到的电磁辐射提供了完全数学上不完整的数据检测的数据 在执行第一轨迹期间,从而允许重建关于感兴趣对象的结构信息 (107)。

    Reconstruction algorithm for object point outside the scan-field-of-view
    49.
    发明授权
    Reconstruction algorithm for object point outside the scan-field-of-view 有权
    对象点的重建算法在扫描视野外

    公开(公告)号:US07782997B2

    公开(公告)日:2010-08-24

    申请号:US11994700

    申请日:2006-07-04

    IPC分类号: A61B6/00

    摘要: CT scanners have a certain scan-field-of-view defined by the fan-angle of the system. According to an exemplary embodiment of the present invention, object points outside the scan-field-of-view may be reconstructed on the basis of a system of linear equations which may be solved iteratively and with reasonable effort. Therefore, explicit regularization techniques may be applied to recover the unknown object function.

    摘要翻译: CT扫描仪具有由系统的扇角定义的特定扫描视场。 根据本发明的示例性实施例,可以基于可以以合理的努力迭代地解决的线性方程式的系统来重构扫描视场外的物点。 因此,可以应用明确的正则化技术来恢复未知对象的功能。

    CT method for the examination of cyclically moving object
    50.
    发明授权
    CT method for the examination of cyclically moving object 有权
    CT方法检查循环移动物体

    公开(公告)号:US07702063B2

    公开(公告)日:2010-04-20

    申请号:US11719305

    申请日:2005-11-07

    IPC分类号: A61B6/00

    摘要: The invention relates to a computer tomography method for the detection of a cyclically moved object in an examination zone. First, after the acquisition of the measured values, a rough image of the examination zone is reconstructed from which a region relevant for the further method is selected. For the generation of an image with reduced motion artifacts or improved temporal resolution, reconstruction windows in predefinable position are used, which are optimized in such a way that they are, on the one hand, smallest possible, on the other hand, however, sufficiently large, to be able to reconstruct all voxels of this region. Only measured values acquired within the reconstruction windows are taken into account for the reconstruction of a CT image of the region.

    摘要翻译: 本发明涉及一种用于在检查区域中检测循环移动物体的计算机断层摄影方法。 首先,在获取测量值之后,重建检查区域的粗略图像,从中选择与该另一方法相关的区域。 为了产生具有减少的运动伪影或改进的时间分辨率的图像,使用可预定义位置的重建窗口,其以这样的方式被优化:一方面,尽管如此,另一方面,足够的 大,能够重建这个地区的所有体素。 仅在重建窗口中获取的测量值被考虑用于重建该区域的CT图像。