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公开(公告)号：US20220401588A1
公开(公告)日：2022-12-22
申请号：US17779614
申请日：2020-11-04
申请人： Siemens Healthcare GmbH , Bayer AG
发明人： Thomas FLOHR , Bernhard SCHMIDT , Gregor JOST , Hubertus PIETSCH
摘要： An ensemble of at least two X-ray contrast agents includes X-ray contrast agent and a second X-ray contrast agent. The second X-ray contrast agent has an X-ray absorption whose change between at least two different X-ray photon energies differs significantly from the change of the X-ray absorption of the first X-ray contrast agent between the at least two different X-ray photon energies. An X-ray imaging method, an image reconstruction device, an X-ray imaging system are also disclosed.
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公开(公告)号：US20230000454A1
公开(公告)日：2023-01-05
申请号：US17779637
申请日：2020-11-04
申请人： Siemens Healthcare GmbH , Bayer AG
发明人： Thomas FLOHR , Bernhard SCHMIDT , Gregor JOST , Hubertus PIETSCH
摘要： Embodiments of the present invention relates to an X-ray contrast agent. The X-ray contrast agent has an X-ray absorption the change of which between at least two different X-ray photon energy levels differs from the change in X-ray absorption of calcium between the at least two different X-ray photon energy level. Embodiments of the present invention also relates to an X-ray imaging method. Embodiments of the present invention additionally relates to an image reconstruction device. Embodiments of the present invention further relates to an X-ray imaging system.
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公开(公告)号：US20220192612A1
公开(公告)日：2022-06-23
申请号：US17553899
申请日：2021-12-17
摘要： A method is for actuating a medical imaging device including a radiation source, embodied during a rotational movement around an axis of rotation to irradiate an irradiation region from a plurality of angular positions. In an embodiment, the method includes capturing an object position of a moving object relative to the irradiation region. The Method further includes actuating the medical imaging device based upon the captured object position of the moving object, such that the intensity of the radiation emitted by the radiation source for a first partial number of the plurality of angular positions in a first angular range round the axis of rotation is reduced relative to a second partial number of the plurality of angular positions in a second angular range around the axis of rotation, he captured object position being included in the first angular range.
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公开(公告)号：US20190026128A1
公开(公告)日：2019-01-24
申请号：US16033327
申请日：2018-07-12
摘要： A method is disclosed for configuring a medical imaging device. In at least one embodiment, the method includes providing an input data set specifying a clinical task, the input data set including quantified image requirements; transferring the input data set to a server; providing a configuration data set by the server depending on the input data set; transferring the configuration data set from the server to the medical imaging device within a defined time interval; and configuring the medical imaging device based on the configuration data set.
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公开(公告)号：US20170301082A1
公开(公告)日：2017-10-19
申请号：US15359709
申请日：2016-11-23
IPC分类号： G06T7/00
CPC分类号： G06T7/0012 , A61B6/032 , A61B6/4241 , A61B6/481 , A61B6/482 , A61B6/504 , A61B6/5217 , G01N23/046 , G06T2207/10081 , G06T2207/30008
摘要： A method is for processing a first image data set including a first image value tuple associated with a volume element of a region of an object to be imaged. In an embodiment, a second image data set is generated based upon the first image data set, including a second image value tuple associated with the volume element, a base material decomposition being capable of being carried based upon the second image data set and based upon a base material set; a starting area and a target area are selected as a function of the base material set, the first image value tuple being located in the starting area; the second image value tuple is ascertained based upon the first image value tuple, the second image value tuple being associated with the first image value tuple via image value tuple imaging and being located in the target area.
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公开(公告)号：US20170245816A1
公开(公告)日：2017-08-31
申请号：US15428729
申请日：2017-02-09
发明人： Thomas FLOHR , Bernhard SCHMIDT
摘要： An X-ray imaging method is for generating contrast-enhanced image data relating to an examination region of an object to be examined. In an embodiment of the method, first contrast-agent influenced measured X-ray projection data with a first X-ray energy spectrum and at least one set of second contrast-agent influenced measured X-ray projection data with a second X-ray energy spectrum are acquired from the examination region. Subsequently, image data assigned to a third X-ray energy spectrum with a third mean energy, based on the first and at least second measured X-ray projection data is reconstructed based on the first and at least second measured X-ray projection data that has been acquired. A mean energy of the first X-ray energy spectrum and a mean energy of the second X-ray energy spectrum are selected as a function of a dimension parameter value of the object that is to be examined.
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公开(公告)号：US20190038244A1
公开(公告)日：2019-02-07
申请号：US16050093
申请日：2018-07-31
发明人： Thomas FLOHR , Michael GRASRUCK , Philipp HOELZER , Mark-Aleksi KELLER-REICHENBECHER , Bernhard SCHMIDT
IPC分类号： A61B6/00 , A61B6/03 , A61B6/06 , G01N23/046
摘要： A method is for recording a region of interest of an examination object with a computed tomography system including an energy-selective X-ray detector with a number of energy threshold values that can be set by way of an energy threshold values. In an embodiment, the method includes first recording of first projection scan data with a first set of energy thresholds; setting a second set of energy thresholds different from the first set of energy thresholds, based on a temporally variable parameter; and second recording of second projection scan data different from the first projection scan data with the second set of energy thresholds.
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8.发明申请公开(公告)号：US20190038239A1
公开(公告)日：2019-02-07
申请号：US16051606
申请日：2018-08-01
摘要： A method for determining a local tissue function of tissue in a body region of interest of an examination object is disclosed. In an embodiment, the method includes segmentation of an outer contour of the tissue using at least one medical image recording representing the body region of interest of the examination object comprising the tissue; subdivision of the segmented tissue into at least two tissue regions; and ascertaining a function parameter relating to the tissue function for each of the at least two tissue regions. Embodiments also relate to a corresponding computing unit for determining a tissue function of tissue, a corresponding medical imaging system, a computer program and a computer-readable data carrier.
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公开(公告)号：US20180165811A1
公开(公告)日：2018-06-14
申请号：US15831462
申请日：2017-12-05
发明人： Thomas FLOHR , Bernhard SCHMIDT
CPC分类号： G06T7/0016 , A61B6/032 , A61B6/4241 , A61B6/481 , A61B6/482 , A61B6/486 , A61B6/504 , A61B6/5217 , A61B6/5235 , G06T2207/10081 , G06T2207/20081 , G06T2207/30104
摘要： A method is for the characterization of plaque in a region of interest inside an examination subject by way of a plurality of image data sets. The image data sets have been reconstructed from a plurality of projection data sets, which have been acquired via a CT device using different X-ray energy spectra. The method includes: acquiring the image data sets, which include a plurality of pixels. Spectral parameter values are acquired on a pixel by pixel basis using at least two image data sets. Character parameter values are then acquired on a pixel by pixel basis to characterize plaques on the basis of the spectral parameter values. An analysis unit and a computed tomography system are also disclosed.
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公开(公告)号：US20190325575A1
公开(公告)日：2019-10-24
申请号：US16386455
申请日：2019-04-17
发明人： Jing YAN , Thomas FLOHR , Bernhard SCHMIDT
摘要： A method is for determining at least one first characteristic value of blood in a patient. In an embodiment, the method includes acquiring, via a computed tomography device, computed tomography data of the patient for at least two energy levels of radiation using multi-energy computed tomography; defining a region of interest including blood, in at least one image data set reconstructed from the computed tomography data acquired; determining, at least in the region of interest defined, attenuation coefficients for each energy level of the at least two energy levels; performing material decomposition into at least two materials, one material of the two materials being iron, using the attenuation coefficients determined, yielding at least a fraction of iron in the region of interest defined; and determining the at least one first characteristic value, at least one of as and from the fraction of iron yielded.
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