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公开(公告)号：US11877879B2
公开(公告)日：2024-01-23
申请号：US16682388
申请日：2019-11-13
发明人： Julia Wicklein , Wen Man He , Ludwig Ritschl , Ramyar Biniazan , Stephan Dwars
CPC分类号： A61B6/502 , A61B6/025 , A61B6/5205 , A61B6/54 , A61B90/39 , A61B2090/3908
摘要： A method is for generating a synthetic mammogram. In an embodiment, the method incudes acquisition of a plurality of projection data sets at a plurality of projection angles; and generation of at least one synthetic mammogram with an image property essentially equivalent to a conventional full-field digital mammography acquisition based on several projection data sets.
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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：US11259783B2
公开(公告)日：2022-03-01
申请号：US16519306
申请日：2019-07-23
发明人： Marcus Radicke , Ludwig Ritschl
摘要： An embodiment is for determining a region of interest to be rendered in an ultrasound volume data set of an interior of an object under examination. In an embodiment, the method includes: determining a projection position in a two dimensional X-ray projection image of the object under examination, wherein a projection ray correlated to the projection position passes through the region of interest; and extracting a partial data set encompassed by the ultrasound volume data set using the projection position determined and based upon geometrical information relating to the X-ray 3D ultrasound unit.
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4.发明授权公开(公告)号：US10393677B2
公开(公告)日：2019-08-27
申请号：US15696840
申请日：2017-09-06
IPC分类号： G01N23/04 , G01N23/083 , G01N23/041 , G21K1/06
摘要： A method and an X-ray apparatus generate a projective X-ray representation of an examination object. Two projective images obtained from a phase contrast measurement are adapted to each other in respect of their representation format and a result image is generated by combining the adapted images. The result image allows extensive separation of different structures in the examination object that is used.
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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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公开(公告)号：US11704845B2
公开(公告)日：2023-07-18
申请号：US17023893
申请日：2020-09-17
发明人： Ludwig Ritschl
CPC分类号： G06T11/003 , A61B6/025 , A61B6/4078 , A61B6/4452 , A61B6/463 , A61B6/5241 , G06T2210/41
摘要： A method includes recording a plurality of projection recordings along a linear trajectory. An X-ray source and an X-ray detector move in parallel opposite to one another along the linear trajectory and the examination object is arranged between the X-ray source and the X-ray detector. The method includes reconstructing a tomosynthesis dataset, respective depth information of the examination object is respective determined along an X-ray beam bundle spanned by the motion along the linear trajectory and an X-ray beam fan of the X-ray source perpendicular to the linear trajectory so that different respective depth levels in the object parallel to a detection surface of the X-ray detector are respectively scanned differently. Finally, the method includes determining a first slice image with a first slice thickness in a depth level, among the respective depth levels, substantially parallel to the detection surface of the X-ray detector based on the tomosynthesis dataset.
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公开(公告)号：US11406336B2
公开(公告)日：2022-08-09
申请号：US17023785
申请日：2020-09-17
发明人： Ludwig Ritschl
摘要： A method and image generating unit are for capturing at least two tomosynthesis images of an object undergoing examination offset by an angle of examination. In an embodiment the method includes a first and second capture of a plurality of first projection images along the linear trajectory, via X-ray source and the X-ray detector capturing the object undergoing examination in a first plane of capture and in a second capture plane different from the first capture plane, the first and second capture planes forming the angle of examination; determination of a first slice image dataset based upon the first projection images and of a second slice image dataset based upon the second projection images; and registration of the first slice image dataset and the second slice image dataset.
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8.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：US10660581B2
公开(公告)日：2020-05-26
申请号：US16519129
申请日：2019-07-23
摘要： A method is for operating an X-ray device. In an embodiment, the method includes acquiring a sequence of images of a patient; moving an acquisition arrangement including at least one X-ray tube assembly, during the acquiring of the sequence of images, along the patient in a scanning direction; evaluating at least two different images, showing at least one common feature of the patient, to determine depth information for the at least one common feature; and actuating a collimator aperture of a collimator of the X-ray tube assembly, as a function of position information describing a position of the acquisition arrangement in the scanning direction, to change an aperture angle of a radiation field generated by the X-ray tube assembly in the scanning direction.
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公开(公告)号：US11839500B2
公开(公告)日：2023-12-12
申请号：US17386198
申请日：2021-07-27
CPC分类号： A61B6/027 , A61B6/0407 , A61B6/4417 , A61B6/5211 , A61B6/025
摘要： A method is for acquiring an X-ray image of a region of interest of an examinee using an X-ray system and a displaceable patient table for positioning the examinee. In an embodiment, the method includes: selecting the region of interest; acquiring, section-by-section, successive image sections in relation to the region of interest, the acquiring, for each successive image section of the successive image sections, including moving the X-ray source and the X-ray detector along a common acquisition direction, moving the patient table counter to the common acquisition direction, determining a respective essentially strip-shaped detection area within the detection zone for a respective image section of the successive image sections, and detecting the respective image section by way of the determined detection area and the X-ray source, to acquire the respective image section; and generating a composite X-ray image of the region of interest from the respective successive image sections.
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