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11. 发明授权

US09811902B2 Determining a value of a recording parameter by use of an anatomic landmark 有权
公开(公告)号：US09811902B2
公开(公告)日：2017-11-07
申请号：US14511381
申请日：2014-10-10
申请人： Siemens Aktiengesellschaft
发明人： Thomas Flohr , Michael Scheuering , Bernhard Schmidt , Martin Sedlmair , Grzegorz Soza
IPC分类号： G06T7/00 , A61B6/00 , G06K9/46 , G06T17/00 , A61B6/03 , A61B6/08 , G06T7/73
CPC分类号： G06T7/0012 , A61B6/032 , A61B6/08 , A61B6/4447 , A61B6/4482 , A61B6/465 , A61B6/469 , A61B6/501 , A61B6/545 , G06K9/4604 , G06T7/73 , G06T17/00 , G06T2207/10081
摘要： A method and an imaging system are disclosed. The method, for determining at least one value of at least one recording parameter for a recording of an X-ray image of a patient positioned on an examination table, uses contactless scanning of at least part of the surface of the patient via at least one electromagnetic sensor, to calculate the three-dimensional contour of the scanned surface without additional exposure to radiation. At least one anatomic landmark of the patient can be identified using the three-dimensional contour, and the position of the anatomic landmark is determinable in the coordinate system of the table. The value of the recording parameter is determinable using the position of the anatomic landmark. The value of the recording parameter is determinable quickly and easily since contactless scanning of surfaces can be achieved quickly and easily in terms of technology.

12. 发明授权

US09176078B2 X-ray detector system for a computed tomography scanner and computed tomography device 有权
标题翻译：用于计算机断层扫描仪和计算机断层摄影装置的X射线检测器系统
公开(公告)号：US09176078B2
公开(公告)日：2015-11-03
申请号：US14031117
申请日：2013-09-19
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Thomas Flohr , Michael Grasruck , Karl Stierstorfer
IPC分类号： A61B6/00 , G01N23/04 , G01T1/29
CPC分类号： G01N23/046 , A61B6/584 , G01N2223/419 , G01N2223/501 , G01T1/2985
摘要： For improved sampling, an x-ray detector system for a computed tomography scanner is provided. In an embodiment, the x-ray detector system includes at least one detector row which includes a plurality of detector modules each having a plurality of detector elements. Along the at least one detector row, a first portion of the detector elements is arranged in a grid at a first grid spacing in relation to its respective neighboring detector elements, and a second portion of the detector elements is arranged in a grid at a second grid spacing in relation to its respective neighboring detector elements.
摘要翻译：为了改进采样，提供了一种用于计算机断层扫描仪的X射线检测器系统。在一个实施例中，X射线检测器系统包括至少一个检测器行，其包括多个检测器模块，每个检测器模块具有多个检测器元件。沿着至少一个检测器行，检测器元件的第一部分相对于其相应的相邻检测器元件以第一网格间隔布置成格栅，并且检测器元件的第二部分以第二个格栅布置相对于其相应的相邻检测器元件的网格间距。

13. 发明申请

US20150117595A1 METHOD AND X-RAY SYSTEM FOR GENERATING A PHASE CONTRAST IMAGE 审中-公开
标题翻译：用于生成相位对比图像的方法和X射线系统
公开(公告)号：US20150117595A1
公开(公告)日：2015-04-30
申请号：US14408314
申请日：2013-05-23
申请人： Siemens Aktiengesellschaft
发明人： Thomas Flohr , Rainer Raupach
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/484 , A61B6/032 , A61B6/4007 , A61B6/482 , A61B6/5205 , A61B6/5217 , G01N23/046 , G01N2223/419
摘要： A method and an X-ray system are disclosed for generating a phase contrast image of an examination object. In an embodiment, the distribution of an electron density in the examination object is determined by defining energy-dependent attenuation values for X-radiation with at least two different X-ray energy spectra, phase-shift values are obtained from the previously determined electron density distribution, and a phase contrast image is generated from the calculated phase-shift values.
摘要翻译：公开了一种用于产生检查对象的相位对比图像的方法和X射线系统。在一个实施例中，通过使用至少两个不同的X射线能谱定义与X射线有关的能量相关的衰减值来确定检查对象中的电子密度的分布，从先前确定的电子密度获得相移值分布，并且从计算的相移值生成相位对比图像。

14. 发明授权

US09907529B2 Patient-dependent optimization of the amount of contrast medium 有权
公开(公告)号：US09907529B2
公开(公告)日：2018-03-06
申请号：US14620381
申请日：2015-02-12
申请人： Siemens Aktiengesellschaft
发明人： Thomas Flohr , Bernhard Schmidt
IPC分类号： A61B6/00 , A61B6/03 , G06T5/00
CPC分类号： A61B6/544 , A61B6/032 , A61B6/4266 , A61B6/481 , A61B6/482 , A61B6/484 , A61B6/5294 , A61B6/545 , G06T5/001
摘要： A method and an apparatus are disclosed for patient-dependent optimization and reduction of the contrast medium amount. An embodiment includes provisioning patient-specific data, containing information about a patient cross-section relevant for the imaging measurement; establishing CT values and/or CNR values of a contrast medium to be expected for at least one region of interest of the patient for different candidate settings of x-ray source arrangement and/or of an image reconstruction device; determining a relevant candidate contrast medium amount for the different candidate settings, which would lead to a CT value or CNR value of the contrast medium which corresponds to the CT value or CNR value of the contrast medium at the reference setting of the x-ray source arrangement and/or image reconstruction device; and displaying an optimum relative candidate contrast medium amount and of the associated candidate setting.

15. 发明授权

US09589336B2 Reconstruction of image data by means of contour data 有权
标题翻译：通过轮廓数据重建图像数据
公开(公告)号：US09589336B2
公开(公告)日：2017-03-07
申请号：US14510425
申请日：2014-10-09
申请人： Siemens Aktiengesellschaft
发明人： Thomas Flohr , Bernhard Schmidt , Martin Sedlmair
IPC分类号： A61B6/00 , G06T5/20 , A61B6/03 , G06T5/50 , G06T11/00
CPC分类号： G06T5/20 , A61B6/032 , A61B6/4441 , A61B6/5205 , A61B6/5211 , A61B6/5258 , G06T5/50 , G06T11/006 , G06T2211/432 , G06T2211/436
摘要： A method is based on first projection data, recorded during a relative rotational movement between an x-ray source of a CT device and at least one examination object lying partly outside the field of view of the CT device. Contour data of the surface of the examination object is useable to enhance the reconstruction of the incomplete first projection data. The spatial correlation between the first projection data and the contour data is known. The first projection data is expanded by way of the contour data to modified projection data, so that the modified projection data includes information about the contour of the examination object lying outside the field of view of the CT device. In an embodiment of the inventive reconstruction of image data by way of the modified projection data, fewer or no artifacts occur by comparison with reconstruction of image data from just the first image data.
摘要翻译：一种方法是基于在CT装置的x射线源和部分位于CT装置的视野之外的至少一个检查对象之间的相对旋转运动期间记录的第一投影数据。检查对象表面的轮廓数据可用于增强不完整的第一投影数据的重建。第一投影数据和轮廓数据之间的空间相关性是已知的。第一投影数据通过轮廓数据扩展到修改的投影数据，使得修改的投影数据包括关于位于CT装置的视场外的检查对象的轮廓的信息。在通过修改的投影数据进行图像数据的本发明重建的实施例中，通过与来自刚刚第一图像数据的图像数据的重建相比较而产生更少或不产生伪影。

16. 发明授权

US09186114B2 Method for producing a noise-reduced CT image data record, computer system, and CT system 有权
标题翻译：降噪CT图像数据记录，计算机系统和CT系统的生成方法
公开(公告)号：US09186114B2
公开(公告)日：2015-11-17
申请号：US13628498
申请日：2012-09-27
申请人： Siemens Aktiengesellschaft
发明人： Thomas Flohr , Bernhard Krauβ , Rainer Raupach , Bernhard Schmidt
IPC分类号： G06K9/00 , A61B6/03 , A61B6/00
CPC分类号： A61B6/03 , A61B6/032 , A61B6/4014 , A61B6/482 , A61B6/541
摘要： A method is disclosed for producing a noise-reduced CT image data record by frequency band breakdown, a computer system for carrying out the method, and a CT system (1) with such a computer system. In an embodiment of the method, several linear-combined mixed image data records ( M m = c 0 , m + ∑ i ⁢ c i , m · X i ) are produced from several simultaneously-recorded energy spectrum-specific CT image data records (Xi); a frequency band breakdown of the mixed image data records (Mm) takes place into a first lowest frequency band (F0) and several higher frequency bands; and a result image data record ( E = ∑ j , m ⁢ g j , m ⁡ ( r ) · F j · M m ) is calculated, wherein each mixed image data record (Mm) is multiplied with precisely one filter and with a location-dependent function (gj,m(r)) and is thereby totaled, and wherein g0,0(r)=1.
摘要翻译：公开了一种用于通过频带击穿产生噪声降低的CT图像数据记录的方法，用于执行该方法的计算机系统以及具有这种计算机系统的CT系统（1）。在该方法的一个实施例中，由几个同时记录的能谱专用CT图像数据记录（M m = c 0，m +Σi ci，m·X i）产生几个线性组合混合图像数据记录西）; 混合图像数据记录（Mm）的频带击穿发生在第一最低频带（F0）和若干较高频带中; 并计算结果图像数据记录（E =Σj，m gj，m⁡（r）·F j·M m），其中每个混合图像数据记录（Mm）被精确地与一个滤波器相乘，依赖函数（gj，m（r）），从而总计，其中g0,0（r）= 1。

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