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公开(公告)号：US11869122B2
公开(公告)日：2024-01-09
申请号：US17545247
申请日：2021-12-08
发明人： Thomas Flohr , Steffen Kappler
IPC分类号： G06T11/00
CPC分类号： G06T11/008 , G06T11/006 , G06T2211/408
摘要： A method is disclosed for generating an image. An embodiment of the method includes detecting a first projection data set via a first group of detector units, the first group including a first plurality of first detector units, each having more than a given number of detector elements; detecting a second projection data set via a second group of detector units, the second group including a second plurality of second detector units, each including, at most, the given number of detector elements; reconstructing first image data based on the first projection data set; reconstructing second image data based on the second projection data set; and combining the first image data and the second image data. A non-transitory computer readable medium, a data processing unit, and an imaging device including the data processing unit are also disclosed.
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公开(公告)号：US11432787B2
公开(公告)日：2022-09-06
申请号：US17480243
申请日：2021-09-21
摘要： A method and a system are for image noise reduction. In an embodiment, the method includes producing a recorded image; establishing an amount of noise of the recorded image; decomposing the amount of noise into a number of N frequency-dependent noise components for N frequency bands, the number of N frequency-dependent noise components including respective data points respectively reproducing noise, of the amount of noise in the recorded image, for the respective frequency bands of the N frequency bands; examining the number of N frequency-dependent noise components for outlier data points, where an intensity lies outside a range of values, and forming moderated noise components by moderation of values of the outlier data points established in the examining of the number of N frequency-dependent noise components; and subtracting the moderated noise components from the recorded image.
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公开(公告)号：US10918343B2
公开(公告)日：2021-02-16
申请号：US16351595
申请日：2019-03-13
发明人： Eric Fournie , Steffen Kappler
摘要： A method and energy-sensitive CT device are disclosed for motion correction of a computed tomography image. In an embodiment, the method includes: provisioning spectral CT data of an examination region with a moving object, the spectral CT data being recorded with an energy-sensitive CT device and including CT data at at least one energy level, and the at least one energy level of the CT data being adapted to a structure in the moving object; identifying the structure in the CT data at at least one energy level, of the at least one energy level, adapted to the structure; calculating a motion vector field of the structure identified; and motion correcting the spectral CT data by the motion vector field calculated to produce a motion-corrected CT image.
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公开(公告)号：US10321881B2
公开(公告)日：2019-06-18
申请号：US15819326
申请日：2017-11-21
IPC分类号： A61B6/00 , A61B6/03 , G01T1/29 , G06T11/00 , G01N23/046
摘要： A method is for generating CT image data with spectral information from an examination region of a patient. According to an embodiment, the examination region is exposed to polychromatic X-radiation. Data from the examination region, including a first projection measurement data record and at least one second projection measurement data record, is captured via a photon counting detector. At least one second projection measurement data record with reduced resolution is generated based upon the at least one second projection measurement data record. The first and at least one second projection measurement data records are then transmitted to an image generation unit. Finally, the resolution of the first projection measurement data record is transferred onto the at least one second projection measurement data record with reduced resolution and/or an image data record based on the at least one second projection measurement data record with reduced resolution. A system is also disclosed.
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5.发明授权公开(公告)号：US11935161B2
公开(公告)日：2024-03-19
申请号：US17487531
申请日：2021-09-28
CPC分类号： G06T11/008 , A61B6/025 , A61B6/502 , A61B6/5223 , A61B6/5235 , G06T5/20 , G06T2207/10112 , G06T2207/30068
摘要： A method for generating result slice images with at least partially different slice thickness based on a tomosynthesis image data set of a breast includes generating average value slices and maximum value slices (MIP) based on the tomosynthesis image data set, frequency dividing the average value slices into low-pass filtered and high-pass filtered average value slices, high-pass filtering of maximum value slices to form high-pass filtered maximum value slices, mixing high-pass filtered maximum value slices and high-pass filtered average value slices to form mixed high-pass filtered maximum value slices, combining the low-pass filtered average value slices with the mixed high-pass filtered maximum value slices to form the result slice images, and applying a moving maximum value across a selected thickness of maximum value slices or across a selected thickness of mixed high-pass filtered maximum value slices.
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公开(公告)号：US20230222661A1
公开(公告)日：2023-07-13
申请号：US18153609
申请日：2023-01-12
发明人： Ramyar BINIAZAN , Steffen Kappler , Ludwig Ritschl
IPC分类号： G06T7/00
CPC分类号： G06T7/0014 , A61B6/5247 , G06T2207/10116 , G06T2207/20081 , G06T2207/20084 , G06T2207/30061
摘要： One or more example embodiments relates to a computer-implemented method for providing key elements of the examination region in an X-ray image.
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7.发明授权公开(公告)号：US11653887B2
公开(公告)日：2023-05-23
申请号：US17029182
申请日：2020-09-23
发明人： Mathias Hoernig , Steffen Kappler , Julia Wicklein
CPC分类号： A61B6/502 , A61B6/025 , A61B6/4021 , A61B6/4035 , A61B6/481 , A61B6/482 , A61B6/5235 , A61B6/54
摘要： A method is for creating a synthetic mammogram based upon a dual energy tomosynthesis recording of an examination region. In an embodiment the method includes making a low energy tomosynthesis recording with a first X-ray energy spectrum; making a high energy tomosynthesis recording with a second X-ray energy spectrum of relatively higher energy compared with the first X-ray energy spectrum, wherein the examination region includes a contrast medium distribution; determining a subtraction volume based upon the high energy tomosynthesis recording and the low energy tomosynthesis recording; generating a three-dimensional probability map with a weighting factor per voxel based upon the subtraction volume; and creating a synthetic mammogram based upon the three-dimensional probability map.
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公开(公告)号：US20220292742A1
公开(公告)日：2022-09-15
申请号：US17249735
申请日：2021-03-11
发明人： Boris Mailhe , Florin-Cristian Ghesu , Siqi Liu , Sasa Grbic , Sebastian Vogt , Dorin Comaniciu , Awais Mansoor , Sebastien Piat , Steffen Kappler , Ludwig Ritschl
摘要： Systems and methods for generating a synthetic image are provided. An input medical image in a first modality is received. A synthetic image in a second modality is generated from the input medical image. The synthetic image is upsampled to increase a resolution of the synthetic image. An output image is generated to simulate image processing of the upsampled synthetic image. The output image is output.
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公开(公告)号：US10104752B2
公开(公告)日：2018-10-16
申请号：US15819342
申请日：2017-11-21
发明人： Edgar Goederer , Steffen Kappler
摘要： An X-ray detector is disclosed, including a detection unit to generate a detection signal for incident X-ray radiation; a signal analysis module to determine a set of count rates for incident X-ray radiation based upon the detection signal and signal analysis parameters for X-ray radiation; and a switchover control unit for switching between first signal analysis parameters and second signal analysis parameters. When an amount of X-ray radiation is incident on the detection module, a first set of count rates is generated for a first time interval based upon first signal analysis parameters and a second set of count rates is generated for a second time interval based upon second signal analysis parameters, different from the first signal analysis parameters. An X-ray imaging system including the detector; a method for determining count rates for X-ray radiation; and a method for calibrating signal analysis parameters are also disclosed.
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公开(公告)号：US11908047B2
公开(公告)日：2024-02-20
申请号：US17249735
申请日：2021-03-11
发明人： Boris Mailhe , Florin-Cristian Ghesu , Siqi Liu , Sasa Grbic , Sebastian Vogt , Dorin Comaniciu , Awais Mansoor , Sebastien Piat , Steffen Kappler , Ludwig Ritschl
CPC分类号： G06T11/008 , G06T3/4053 , G06T7/0012 , G06T7/11 , G06T2207/10081 , G06T2207/20081 , G06T2207/20084 , G06T2211/408 , G16H30/40
摘要： Systems and methods for generating a synthetic image are provided. An input medical image in a first modality is received. A synthetic image in a second modality is generated from the input medical image. The synthetic image is upsampled to increase a resolution of the synthetic image. An output image is generated to simulate image processing of the upsampled synthetic image. The output image is output.
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