公开(公告)号：WO2013030698A1

公开(公告)日：2013-03-07

申请号：PCT/IB2012/054032

申请日：2012-08-08

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GmbH ,  KOEHLER, Thomas ,  SCHLOMKA, Jens-Peter

Inventor： KOEHLER, Thomas ,  SCHLOMKA, Jens-Peter

IPC: G06T5/50 ,  G06T11/00

CPC classification number: G06T7/0014 ,  G01N23/046 ,  G06T5/50 ,  G06T11/005 ,  G06T2211/408

Abstract: For correcting differential phase image data 52, differential phase image data 52 acquired with radiation at different energy levels is received, wherein the differential phase image data 52 comprises pixels 60, each pixel 60 having a phase gradient value 62a, 62b, 62c for each energy level. After that an energy dependent behavior of phase gradient values 62a, 62b, 62c of a pixel 60 is determined and a corrected phase gradient value 68 for the pixel 60 is determined from the phase gradient values 62a, 62b, 62c of the pixel 60 and a model for the energy dependence of the phase gradient values 62a, 62b, 62c.

Abstract translation: 为了校正微分相位图像数据52，接收以不同能量级别的辐射获取的差分相位图像数据52，其中差分相位图像数据52包括像素60，每个像素60具有每个能量的相位梯度值62a，62b，62c 水平。 之后，确定像素60的相位梯度值62a，62b，62c的与能量相关的行为，并且根据像素60的相位梯度值62a，62b，62c确定像素60的校正相位梯度值68和 模型，用于相位梯度值62a，62b，62c的能量依赖性。

公开(公告)号：WO2012093361A2

公开(公告)日：2012-07-12

申请号：PCT/IB2012/050037

申请日：2012-01-04

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  FORTHMANN, Peter ,  KOEHLER, Thomas

Inventor： FORTHMANN, Peter ,  KOEHLER, Thomas

CPC classification number: G06T11/006 ,  G06T2211/416 ,  G06T2211/424

Abstract: 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.

Abstract translation: 本发明涉及一种用于对物体成像的成像系统。 通过使用发射来自主焦点（15）的初级辐射（14）和来自次级焦点（17）的不想要的次级辐射（16）的辐射源获取物体的投影数据。 根据所采集的投影数据重建物体的第一图像，模拟通过第一图像的二次辐射的正向投影以生成二次投影数据，并且基于所采集的投影数据和二次投影数据生成第二图像 。 由于确定了通常会导致图像伪影的次级投影数据，所以重建单元可以在重建第二图像时考虑这些不想要的次级投影数据，以便减少次级投影数据对重建的第二图像的影响，由此 改善图像质量。

公开(公告)号：WO2011073863A1

公开(公告)日：2011-06-23

申请号：PCT/IB2010/055712

申请日：2010-12-10

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KOEHLER, Thomas ,  PROKSA, Roland ,  ROESSL, Ewald

Inventor： KOEHLER, Thomas ,  PROKSA, Roland ,  ROESSL, Ewald

IPC: A61B6/03 ,  G01N23/04 ,  G06T11/00

CPC classification number: A61B6/032 ,  A61B6/469 ,  A61B6/542 ,  G01N23/046 ,  G01N2223/419 ,  G06T11/005 ,  Y10S378/901

Abstract: The invention relates to a computed tomography apparatus for imaging an object. The computed tomography apparatus comprises a radiation source (2) for generating modulated radiation (4) traversing the object and a detector (6) for generating detection values depending on the radiation (4) after having traversed the object, while the radiation source (2) and the object are moved relative to each other. A weight providing unit (14) provides modulation weights for weighting the detection values depending on the modulation of the radiation (4) and a reconstruction unit (15) reconstructs an image of the object, wherein the detection values are weighted based on the provided modulation weights and an image of the object is reconstructed from the weighted detection values. This can allow to optimize the dose application to the object by modulating the radiation accordingly, wherein the reconstructed images still have a high quality.

Abstract translation: 本发明涉及一种用于对物体成像的计算机断层摄影装置。 计算机断层摄影装置包括用于产生经过物体的调制辐射（4）的辐射源（2）和用于在穿过物体之后产生取决于辐射（4）的检测值的检测器（6），而辐射源 ）并且对象相对于彼此移动。 权重提供单元（14）提供调制权重，用于根据辐射（4）的调制对检测值进行加权，重建单元（15）重建对象的图像，其中基于所提供的调制对检测值进行加权 从加权检测值重建对象的权重和图像。 这可以通过相应地调节辐射来优化对物体的剂量应用，其中重建的图像仍然具有高质量。

公开(公告)号：WO2011070488A1

公开(公告)日：2011-06-16

申请号：PCT/IB2010/055561

申请日：2010-12-03

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  GELLER, Diester ,  ENGEL, Klaus, J. ,  VOGTMEIER, Gereon ,  KOEHLER, Thomas ,  ROESSL, Ewald

Inventor： GELLER, Diester ,  ENGEL, Klaus, J. ,  VOGTMEIER, Gereon ,  KOEHLER, Thomas ,  ROESSL, Ewald

IPC: A61B6/00 ,  G01N23/04

CPC classification number: A61B6/00 ,  A61B6/4291 ,  A61B6/4441 ,  A61B6/484

Abstract: X-raydevices for Phase Contrast Imaging (PCI) are often built up with the help ofgratings. For large field-of-views (FOV), production cost and complexity of these gratings could increase significantly as they need to have a focused geometry. Instead of a pure PCI with a large FOV, this invention suggests to combine a traditional absorption X-rayimaging system with large-FOV with an insertable low-cost PCI systemwith small-FOV, The invention supports the user to direct the PCI systemwith reduced FOV to a region that he regards as most interesting for performing a PCI scan thus eliminating X-raydose exposure for scanning regions not interesting fora radiologist. The PCI scan may be generated on the basis of local tomography.

Abstract translation: 用于相位对比成像（PCI）的X射线装置通常在格栅的帮助下建立。 对于大视野（FOV）来说，这些光栅的生产成本和复杂性可能会因为需要聚焦几何而显着增加。 本发明不是采用具有大FOV的纯PCI，而是将传统的吸收式X射线成像系统与大型FOV结合，并具有小FOV的可插入式低成本PCI系统。本发明支持用户将具有降低的FOV的PCI系统 他认为最有意思的是进行PCI扫描，从而消除了对放射科医生不感兴趣的扫描区域的X射线摄影。 可以基于局部断层摄影产生PCI扫描。

公开(公告)号：WO2011055267A1

公开(公告)日：2011-05-12

申请号：PCT/IB2010/054840

申请日：2010-10-26

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KOEHLER, Thomas

Inventor： KOEHLER, Thomas

IPC: A61B6/03 ,  G06T11/00

CPC classification number: A61B6/032 ,  A61B6/4035 ,  A61B6/4233 ,  A61B6/5264 ,  A61B6/542 ,  G06T11/006

Abstract: The invention relates to a computed tomography apparatus comprising a radiation source (2) and a detector (6) for generating detection values depending on a conical radiation beam (4). A weight providing unit (12) provides,for combinations of voxels of an image and detection values,weights for weighting the detection values,and a beam shaper shapes the conical radiation beam (4) such that for at least a part of the detection values the inverse of the variance of a respective detection value is positively correlated with an average of the weights corresponding to the combinations of the voxels, which correspond to the respective detection value, and the respective detection value. This shaping of the conical radiation beam improves the signal-to-noise ratio of the weighted detection values.

Abstract translation: 本发明涉及一种包括辐射源（2）和检测器（6）的计算机断层摄影装置，用于根据锥形辐射束（4）产生检测值。 权重提供单元（12）为图像的体素和检测值的组合提供用于加权检测值的权重，并且光束整形器使锥形辐射束（4）成形，使得对于至少一部分检测值 相应检测值的方差的倒数与对应于与相应检测值对应的体素的组合的权重的平均值以及相应的检测值正相关。 锥形辐射束的这种成形改善了加权检测值的信噪比。

公开(公告)号：WO2010052615A3

公开(公告)日：2011-05-12

申请号：PCT/IB2009054792

申请日：2009-10-28

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  FORTHMANN PETER ,  SCHMITT HOLGER ,  VAN STEVENDAAL UDO ,  KOEHLER THOMAS

Inventor： FORTHMANN PETER ,  SCHMITT HOLGER ,  VAN STEVENDAAL UDO ,  KOEHLER THOMAS

IPC: G06T5/00 ,  G06T7/00 ,  G06T7/20

CPC classification number: G06T11/005 ,  G06T7/11 ,  G06T7/174 ,  G06T7/215 ,  G06T2207/10081 ,  G06T2207/20224 ,  G06T2207/30004 ,  G06T2211/412

Abstract: A method includes creating a second set of projection data that includes substantially only selected structure of interest based on a first set of projection data that includes the selected structure of interest and other structure. Another method includes generating a second plurality of sliding window slices for a last slice of a first plurality of slices, selecting a second sliding window slice from the second plurality of sliding window slices based on the last slice of the first plurality of slices, and generating a second plurality of slices, including a first slice and a last slice, from a range of projection data around projection data corresponding to the last slice of the first plurality of slices.

Abstract translation: 一种方法包括创建第二组投影数据，该投影数据基于包括所选择的感兴趣结构和其他结构的第一组投影数据基本上仅包括所选择的感兴趣结构。 另一种方法包括为第一多个片段的最后片段生成第二多个滑动窗口片段，基于第一多个片段的最后片段从第二多个滑动窗口片段中选择第二滑动窗口片段，以及生成 从与所述第一多个片段的最后片段相对应的投影数据周围的投影数据的范围的第二多个片段，包括第一片段和最后片段。

公开(公告)号：WO2011036624A1

公开(公告)日：2011-03-31

申请号：PCT/IB2010/054256

申请日：2010-09-21

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KOEHLER, Thomas ,  PROKSA, Roland

Inventor： KOEHLER, Thomas ,  PROKSA, Roland

IPC: G06T5/50 ,  G06T11/00

CPC classification number: G06T11/008 ,  G06T5/50 ,  G06T2211/421 ,  G06T2211/424

Abstract: The invention relates to an image generation system for generating an image of a region of interest. The image generation system comprises a measured data providing unit for providing measured data of the region of interest, a reconstruction unit (12) for reconstructing a first and a second image of the region of interest from the measured data using a first and a second reconstruction method, a noise determination unit (13) for determining first and second noise values for first and second image elements of the first and second image, and an image element combining unit (14) for combining corresponding first and second image elements into combined image elements forming a combined image based on the first and second noise values. By combining corresponding image elements of two differently reconstructed images based on determined noise values, a combined image of a region of interest can be generated with an improved quality.

Abstract translation: 本发明涉及一种用于产生感兴趣区域的图像的图像生成系统。 图像生成系统包括测量数据提供单元，用于提供感兴趣区域的测量数据;重建单元（12），用于使用第一和第二重构从所测量的数据重构感兴趣区域的第一和第二图像 方法，用于确定第一和第二图像的第一和第二图像元素的第一和第二噪声值的噪声确定单元（13），以及用于将对应的第一和第二图像元素组合成组合图像元素的图像元素组合单元（14） 基于第一和第二噪声值形成组合图像。 通过基于确定的噪声值组合两个不同重建图像的相应图像元素，可以以改进的质量生成感兴趣区域的组合图像。

公开(公告)号：WO2010018534A1

公开(公告)日：2010-02-18

申请号：PCT/IB2009/053517

申请日：2009-08-11

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  SCHMALE, Ingo ,  KOEHLER, Thomas

Inventor： SCHMALE, Ingo ,  KOEHLER, Thomas

IPC: G01R33/385 ,  G01R33/28 ,  G10K11/175

CPC classification number: G10K11/175 ,  G01R33/288 ,  G01R33/3854 ,  H04K3/42 ,  H04K3/45 ,  H04K3/825 ,  H04K2203/12

Abstract: 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.

Abstract translation: 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装置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。

公开(公告)号：WO2009069040A1

公开(公告)日：2009-06-04

申请号：PCT/IB2008/054852

申请日：2008-11-19

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KOEHLER, Thomas

Inventor： KOEHLER, Thomas

IPC: A61B6/00

CPC classification number: A61B6/00 ,  A61B6/032 ,  A61B6/06 ,  A61B6/4291 ,  A61B6/484

Abstract: The invention relates to a method and a device for generating phase contrast X-rayimages of an object (1). The device comprises an X-raysource (10) that may for example be realized by a spatiallyextended emitter (11) behind a grating (G 0 ). A diffractive optical element (DOE), for example a phase grating(G 1 ), 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.

Abstract translation: 本发明涉及一种用于产生物体（1）的相差X射线图像的方法和装置。 该装置包括X射线源（10），其可以例如由光栅（G0）后面的空间扩展的发射器（11）实现。 衍射光学元件（DOE），例如相位光栅（G 1），从已经通过物体（1）的X射线产生干涉图案（I），以及光谱分辨X射线检测器（30） 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。

公开(公告)号：WO2008152593A2

公开(公告)日：2008-12-18

申请号：PCT/IB2008052308

申请日：2008-06-11

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  FORTMANN PETER ,  KOEHLER THOMAS ,  SCHMITT HOLGER

Inventor： FORTMANN PETER ,  KOEHLER THOMAS ,  SCHMITT HOLGER

IPC: G06T11/00

CPC classification number: G06T11/005 ,  A61B6/5258

Abstract: The invention relates to an apparatus for determining a high density region in an image, wherein the apparatus comprises a provision unit (1, 2, 6, 7, 8) for providing projection data for reconstructing the image. The apparatus comprises further a high density shadow determination unit (12) for determining a high density shadow in the projection data and a backprojection unit (13) for backprojecting the determined high density shadow resulting in a high density image showing the high density region. The inventions relates further to a corresponding method and computer program for determining a high density region in an image.

Abstract translation: 本发明涉及一种用于确定图像中的高密度区域的装置，其中所述装置包括用于提供用于重建图像的投影数据的提供单元（1,2,6,7,8）。 该装置还包括用于确定投影数据中的高密度阴影的高密度阴影确定单元（12）和用于反向投影所确定的高密度阴影的反投影单元（13），导致显示高密度区域的高密度图像。 本发明进一步涉及用于确定图像中的高密度区域的相应方法和计算机程序。