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1.发明申请公开(公告)号：US20190192103A1
公开(公告)日：2019-06-27
申请号：US16225933
申请日：2018-12-19
发明人： André Ritter , Christian Hofmann , Pavlo Dyban , Jens-Christoph Georgi , Kai Schubert , Dieter Oetzel , Eric Tonndorf-Martini
CPC分类号： A61B6/5282 , A61B6/12 , G06T7/11 , G06T7/13 , G06T15/08 , G06T2207/10081 , G06T2207/10116 , G06T2207/30052
摘要： Method and systems are provided for automatically generating a volume model of correction data for an X-ray based medical imaging device. A plurality of X-ray images is recorded of a body region of a patient to be examined from different positions in each case. The plurality of X-ray images is used to generate a first volume model of the body region. Image artifacts are corrected in the first volume model using the plurality of X-ray images and thus a corrected volume model is generated. The corrected volume model is used to determine a contour of an artifact volume affected by image artifacts in the first volume model and the contour of the artifact volume is defined as a volume model of correction data. The volume model of correction data is stored on a data medium and/or output via an interface.
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公开(公告)号：US11340364B2
公开(公告)日：2022-05-24
申请号：US16383557
申请日：2019-04-12
发明人： Christian Hofmann , André Ritter
摘要： A method for providing an item of conversion information describing an allocation rule of at least one physical property value of a material in a voxel relating to an image value of the voxel in a three-dimensional image dataset recorded with an X-ray apparatus is provided. By scanning a phantom including at least one calibration material in the X-ray apparatus, a calibration database that is used for determining the allocation rule is determined. The image dataset is recorded with a receiving spectrum geared to an X-ray detector of the X-ray apparatus. The receiving spectrum is described by at least one spectral parameter. For determining the allocation rule dependent upon the spectral parameter, calibration data derived from the measured calibration dataset describing different receiving spectra is used.
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公开(公告)号：US20190317231A1
公开(公告)日：2019-10-17
申请号：US16383557
申请日：2019-04-12
发明人： Christian Hofmann , André Ritter
摘要： A method for providing an item of conversion information describing an allocation rule of at least one physical property value of a material in a voxel relating to an image value of the voxel in a three-dimensional image dataset recorded with an X-ray apparatus is provided. By scanning a phantom including at least one calibration material in the X-ray apparatus, a calibration database that is used for determining the allocation rule is determined. The image dataset is recorded with a receiving spectrum geared to an X-ray detector of the X-ray apparatus. The receiving spectrum is described by at least one spectral parameter. For determining the allocation rule dependent upon the spectral parameter, calibration data derived from the measured calibration dataset describing different receiving spectra is used.
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公开(公告)号：US11514623B2
公开(公告)日：2022-11-29
申请号：US16253269
申请日：2019-01-22
摘要： A method is for providing a medical image of a patient, acquired via a computed tomography apparatus. An embodiment of the method includes acquiring first projection data of a first measurement region; acquiring second projection data of a second measurement region; registering a reference image to the at least one respiration-correlated image of the patient, wherein the reference image corresponds to the at least one functional image of the patient or is reconstructed under a second reconstruction rule from the second projection data, to produce a deformation model; applying the deformation model to the at least one functional image of the patient; combining the at least one functional image of the patient, deformed by the applying of the deformation model, with the at least one respiration-correlated image of the patient, to produce the medical image of the patient; and providing the medical image of the patient.
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公开(公告)号：US10080538B2
公开(公告)日：2018-09-25
申请号：US15807740
申请日：2017-11-09
发明人： Christian Hofmann , Nora Hünemohr , Rainer Raupach , André Ritter
CPC分类号： A61B6/5235 , A61B6/032 , A61B6/4014 , A61B6/482 , A61B6/56
摘要： A method is for provisioning quantitative CT image data acquired from a scanning field via a dual-source CT device the dual-source CT device including a first radiation source-detector system with a first capture region and a second radiation source-detector system with a second capture region. The method includes dividing the scanning field into a first subregion, representing at least a part of the intersection of the first region and the second capture region, and a second subregion, disjoint from the second region; acquiring first CT scan data from the first subregion and second CT scan data from the second subregion; reconstructing first quantitative CT image data from the first CT scan data and second quantitative CT image data from the second CT scan data; combining the first quantitative CT image data and the second quantitative CT image data to quantitative CT image data; and provisioning the quantitative CT image data.
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