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公开(公告)号：US11517282B2
公开(公告)日：2022-12-06
申请号：US16904900
申请日：2020-06-18
摘要： A method is for providing collision information. In an embodiment, the method includes acquiring first position data relating to an outer contour of an object, via at least one measuring device arranged on a gantry of a medical imaging device; receiving second position data relating to an inner contour of an opening of the gantry and/or an outer contour of the gantry; receiving movement data relating to relative movement between the gantry and the object; calculating the collision information relating to a collision of the object and the gantry, based on the first position data, the second position data and the movement data; and providing the collision information.
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公开(公告)号：US10779790B2
公开(公告)日：2020-09-22
申请号：US16597272
申请日：2019-10-09
发明人： Christian Hofmann
摘要： A method includes determining multiple X-ray tube current profiles of the X-ray tube, satisfying a loading limit of the X-ray tube; collecting first raw data of a patient according to the first X-ray tube current profile, with at least one X-ray tube current profile parameter of the first X-ray tube current profile being adapted according to a functional parameter; adapting the second X-ray tube current profile in the control unit such that, as a function of the at least one adapted X-ray tube current profile parameter, the second X-ray tube current profile satisfies the loading limit of the X-ray tube; collecting the second raw data of the patient according to the second X-ray tube current; reconstructing the medical image data set of the imaging measurement based upon the first raw data and the second raw data. Finally, the method includes provisioning the medical image data set.
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3.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：US20170046832A1
公开(公告)日：2017-02-16
申请号：US15219364
申请日：2016-07-26
发明人： Christian Hofmann
CPC分类号： A61B6/5205 , A61B5/113 , A61B6/032 , A61B6/5264 , A61B6/5288 , G06T11/005 , G06T2211/412
摘要： A method for the reconstruction of planning images is based on a plurality of first respiratory cycles of a patient and tomographic raw data recorded at the same time as the first respiratory cycles being received. A reference cycle is determined based on respiratory cycles of the patient, in particular based on the first respiratory cycles of the patient. A reference cycle is subdivided into temporally equidistant reference phases, a reference amplitude being associated with each reference phase. The reference amplitudes are not equidistantly scanned therefore. Furthermore, the first respiratory cycles of the patient are subdivided into first phases, the temporal positions of the first phases each being based on one of the reference amplitudes. Reconstruction of planning images based on first intervals of the raw data follows, wherein the first intervals correspond to the first phases.
摘要翻译： 用于重建计划图像的方法基于患者的多个第一呼吸周期和在接收到第一呼吸循环的同时记录的断层摄影原始数据。 基于患者的呼吸周期来确定参考周期，特别是基于患者的第一呼吸周期。 参考周期被细分为时间上等距的参考相位，参考幅度与每个参考相位相关联。 因此参考幅度不会等距扫描。 此外，患者的第一呼吸周期被细分为第一阶段，第一阶段的时间位置各自基于参考幅度之一。 基于原始数据的第一间隔重新构建规划图像，其中第一间隔对应于第一阶段。
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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：US10803587B2
公开(公告)日：2020-10-13
申请号：US16018216
申请日：2018-06-26
发明人： Christian Hofmann
摘要： A method is disclosed for performing an imaging examination of a patient via a computer tomograph. The method includes: capturing a respiratory movement of the patient; determining a respiration-correlated parameter, from the respiratory movement of the patient; specifying a measurement region of the imaging examination the measurement region including at least one z-position; automatically calculating at least one measurement parameter in accordance with the respiratory movement, using the respiration-correlated parameter as an input parameter; and performing the imaging examination of the patient, in accordance with the at least one measurement parameter in the measurement region via the computer tomograph, to capture the projection data, wherein the projection data, when captured, depicts the respiratory cycle of the patient at the at least one z-position over the complete time duration of the respiratory cycle.
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公开(公告)号：US20190236818A1
公开(公告)日：2019-08-01
申请号：US16253269
申请日：2019-01-22
CPC分类号： G06T11/008 , A61B6/032 , A61B6/0492 , A61B6/481 , A61B6/482 , A61B6/504 , A61B6/5235 , A61B6/5241 , A61B6/5264 , A61B6/527 , A61B6/5288 , G06T7/337 , G06T7/344 , G06T2207/10081 , G06T2207/20124 , G06T2207/20224 , G06T2207/30004 , G06T2211/408
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：US10123760B2
公开(公告)日：2018-11-13
申请号：US15219364
申请日：2016-07-26
发明人： Christian Hofmann
摘要： A method for the reconstruction of planning images is based on a plurality of first respiratory cycles of a patient and tomographic raw data recorded at the same time as the first respiratory cycles being received. A reference cycle is determined based on respiratory cycles of the patient, in particular based on the first respiratory cycles of the patient. A reference cycle is subdivided into temporally equidistant reference phases, a reference amplitude being associated with each reference phase. The reference amplitudes are not equidistantly scanned therefore. Furthermore, the first respiratory cycles of the patient are subdivided into first phases, the temporal positions of the first phases each being based on one of the reference amplitudes. Reconstruction of planning images based on first intervals of the raw data follows, wherein the first intervals correspond to the first phases.
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公开(公告)号：US11730440B2
公开(公告)日：2023-08-22
申请号：US17826277
申请日：2022-05-27
CPC分类号： A61B6/547 , A61B6/0407 , A61B6/4028 , A61B6/4035 , A61B6/4275 , A61B6/4441
摘要： The method comprises receiving an image sequence of the subject from the camera during the medical imaging scan; receiving at least one of the current position or velocity of the patient table during the medical imaging scan; performing a motion tracking analysis of the image sequence to extract a motion model, wherein at least one of the motion tracking analysis or the motion model is tailored to the body region of interest and takes into account the at least one of the current patient table position or velocity; and analysing the motion model to detect subject motion and, if the detected motion is above a threshold, at least one of adapting the medical imaging examination or issuing an alert.
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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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