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公开(公告)号：US11983847B2
公开(公告)日：2024-05-14
申请号：US17034148
申请日：2020-09-28
发明人： Thomas Flohr , Rainer Raupach , Bernhard Schmidt
CPC分类号： G06T5/002 , G06N20/00 , G06T2207/10081 , G06T2207/20081 , G06T2207/30004
摘要： A method is for noise reduction in image recordings. In an embodiment, the method includes providing an input image; de-noising the input image and producing a de-noised input image; and adapting noise texture of pixels of the de-noised input image via an adaptation method, noise amplitude of the de-noised input image being largely retained and the noise texture of the pixels of the de-noised input image being adapted to correspond largely to a defined noise texture. A corresponding device, a production method for an adaptation device, such an adaptation device, and a control facility and a computed tomography system are also disclosed.
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公开(公告)号：US10542952B2
公开(公告)日：2020-01-28
申请号：US15499075
申请日：2017-04-27
摘要： A method is described for the determination of a calcium score for a patient to be examined with the aid of a CT system. The method is used to define patient-specific CT-acquisition parameters. In addition, material parameters for a model method for the generation of synthetic image data for virtual CT-acquisition parameters are calibrated using phantom image data recorded with reference CT-acquisition parameters. A calcium score assigned to synthetic phantom image data corresponds to a calcium score determined with phantom image data recorded with reference CT-acquisition parameters. Next, CT-projection-measurement data is acquired for a region of interest using the patient-specific CT-acquisition parameters. The acquired CT-projection-measurement data is used to generate synthetic image data using the calibrated model method. Finally, a calcium score is determined using a standard method on the basis of the synthetic image data. Also described is a calcium-score-determining device. Also described is a computed tomography system.
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公开(公告)号：US10424090B2
公开(公告)日：2019-09-24
申请号：US15609052
申请日：2017-05-31
发明人： Rainer Raupach
摘要： A method for determining a spatial distribution of a material property value in an examination region of an examination object is described. With an embodiment of the method, projection scan data is acquired which has been produced with the aid of a single-energy CT scan with a defined X-ray energy spectrum from the examination region of the examination object using a defined scan projection geometry. Furthermore, a target function is established which includes a spectral forward projection of the sought spatial distribution and the acquired projection data. Finally, a spatial distribution of a material property value is determined for which the target function assumes an extremal value. A material property distribution-determining device is also described. A computer tomography system is described, moreover.
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公开(公告)号：US10229517B2
公开(公告)日：2019-03-12
申请号：US15388004
申请日：2016-12-22
发明人： Rainer Raupach , Grzegorz Soza
摘要： In a method and apparatus for segmentation of an examination region to be imaged, scan projection data are acquired from the examination region to be mapped. Iterative reconstruction takes place on the basis of the acquired scan projection data. Preliminary image data and preliminary textural features are reconstructed. Anticipated preliminary structures, preferably preliminary contours, are determined in the examination region on the basis of the obtained preliminary textural features. The anticipated preliminary structures are then taken into account during iterative reconstruction of preliminary image data and preliminary textural features. An image segmentation method is described, moreover. An image reconstruction device is also described.
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公开(公告)号：US09872662B2
公开(公告)日：2018-01-23
申请号：US15369935
申请日：2016-12-06
发明人： Rainer Raupach
CPC分类号： A61B6/5217 , A61B6/032 , A61B6/482 , A61B6/50 , A61B6/5205
摘要： A method is for determining a spatial distribution of a material property value in an examination region of an examination object. According to an embodiment, the method includes capturing measurement projection data; reconstructing image data based upon the captured measurement projection data; estimating a distribution of two basic materials using a threshold value by classifying image points; determining a distribution of the two basic materials based upon the estimated distribution and a general dependency rule; and determining a spatial distribution of the material property value, independent of the measurement energy, based upon the determined distribution and based upon a previously known theoretical relationship between the distribution of the material property value and a distribution of the two basic materials. In addition, a material property distribution determining device is described in one embodiment, and a computer tomography system is also described in another embodiment.
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公开(公告)号：US11857356B2
公开(公告)日：2024-01-02
申请号：US15115921
申请日：2015-02-06
CPC分类号： A61B6/504 , A61B5/055 , A61B6/032 , A61B6/44 , A61B6/4441 , A61B6/481 , A61B8/481 , A61B8/483 , A61M5/007 , G01R33/283 , G01R33/5601
摘要： A method is disclosed for recording medical images of the human body or that of an animal. The method includes scanning for acquiring data and signaling the start and/or end of a manual administration of a contrast medium in temporal relation to the scan for acquiring data.
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公开(公告)号：US10825208B2
公开(公告)日：2020-11-03
申请号：US15963392
申请日：2018-04-26
摘要： An adaptive method for generating CT image data is described. In the method, projection measurement data of an examination region of an examination object is acquired. Furthermore, uncorrected image data of the examination region is generated. Artifact-affected subregions of the examination region are determined on the basis of at least one part of the uncorrected image data. An artifact-reduced image reconstruction is carried out in the artifact-affected subregions of the examination region. Only artifact-reduced subimage data of the artifact-affected subregions is generated. Finally, artifact-reduced image data of the entire examination region is generated by combining at least one part of the uncorrected image data and the artifact-reduced subimage data. A reconstruction device is also described. Moreover, a computed tomography system is described.
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公开(公告)号：US10292674B2
公开(公告)日：2019-05-21
申请号：US15279972
申请日：2016-09-29
发明人： Stefan Kaepplinger , Robert Lapp , Rainer Raupach
摘要： A method and a system are disclosed for image acquisition, in which the protocol for controlling the CT scanner is computed automatically. The system includes a facility, which includes at least one CT scanner; a central PACS system in which image data and assigned metadata are stored as image data information, acquired with the facility; and an analysis unit, in terms of programming technology and/or circuit technology, for analyzing the captured image data information to automatically compute therefrom, the specific operating conditions and the facility-specific protocol parameters for the CT scanner protocol.
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公开(公告)号：US11039786B2
公开(公告)日：2021-06-22
申请号：US16412711
申请日：2019-05-15
发明人： Rainer Raupach , Andreas Krauss , Andreas Wimmer
摘要： A method is for determining a patient weight and/or a body mass index of a patient. The method includes acquiring image data containing depth information of the patient; generating a surface model of the patient based upon the image data acquired; determining density information or X-ray attenuation information of at least part of the patient; and determining at least one of the total patient weight and the body mass index of the patient using the surface model generated and the density information or X-ray attenuation information determined.
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公开(公告)号：US09947117B2
公开(公告)日：2018-04-17
申请号：US15171370
申请日：2016-06-02
发明人： Rainer Raupach
CPC分类号： G06T11/003 , A61B6/032 , A61B6/037 , A61B6/5205 , A61B6/5211 , A61B6/5217 , A61B6/5258 , G06T7/0012 , G06T11/005 , G06T11/006 , G06T11/008 , G06T2207/10116
摘要： A method is disclosed for the reconstruction of resultant image data of an examination object from scan data acquired during a relative rotation movement between a radiation source of an X-ray image recording system and the examination object. An embodiment of the method includes reconstruction of initial image data from the scan data; derivation of contour data from the initial image data; calculation of contour significance data from the scan data and/or the initial image data; and calculation of the resultant image data using the contour data and the contour significance data. A corresponding computer program, a corresponding data carrier, a corresponding control and computation unit and a corresponding X-ray image recording system are also disclosed.
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