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公开(公告)号：EP3188122B1
公开(公告)日：2024-08-28
申请号：EP16202173.7
申请日：2016-12-05
IPC分类号： G06T5/80
CPC分类号： G06T2211/43620130101 , G06T5/80 , G06T11/005
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2.发明公开
公开(公告)号：EP4399510A1
公开(公告)日：2024-07-17
申请号：EP22789262.7
申请日：2022-09-08
申请人： SAFRAN , Centre National de la Recherche Scientifique (CNRS) , Ecole Normale Supérieure Paris-Saclay
IPC分类号： G01N23/046 , G06T11/00
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公开(公告)号：EP3764325B1
公开(公告)日：2024-05-15
申请号：EP20184932.0
申请日：2020-07-09
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , A61B6/032 , A61B6/40 , A61B6/487 , A61B6/482 , A61B6/504 , A61B6/5205 , A61B6/5258 , G06T2211/44120230801
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公开(公告)号：EP3155589B1
公开(公告)日：2018-12-26
申请号：EP15727017.4
申请日：2015-06-11
CPC分类号： G06T7/12 , G06K9/6267 , G06T7/0012 , G06T7/11 , G06T7/136 , G06T7/194 , G06T11/005 , G06T2207/20101 , G06T2207/20112
摘要： The present invention relates to a device for segmenting an image (12) of a subject (14) comprising a data interface (16) for receiving an image (12) of said subject (14) and at least one contour (18) or at least one part of a contour (18), said contour (18) indicating a structure (19) within said image (12), a selection unit (20) for selecting a region(22) in said image (12) divided into a first and a second disjoint part (24, 26) by said contour (18) or said part of said contour (18),said selected region (22) comprising a drawn region and/or a computed region, a classifier (28) for classifying said selected region (22) based on at least one parameter for image segmentation, an analysis unit (29) for defining an objective function based on the classification result, an optimizer (30) for optimizing said parameter set by varying an output of said objective function and an image segmentation unit (32) for segmenting said image (12) using said optimized parameter set.
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公开(公告)号：EP3108813B1
公开(公告)日：2018-12-12
申请号：EP16172349.9
申请日：2016-06-01
申请人： Konica Minolta, Inc.
发明人： MAKIFUCHI, Chiho
IPC分类号： A61B6/00
CPC分类号： G06T7/0002 , A61B6/4291 , A61B6/484 , A61B6/505 , A61B6/5205 , A61B6/5211 , A61B6/5264 , G06T11/005 , G06T2207/10116 , G06T2207/30008 , G06T2207/30168
摘要： A radiation imaging system includes a radiation imaging device, a reconstruction unit and a detection unit. The reconstruction unit generates at least two of a differential phase image, an absorption image and a small-angle scattering image based on periodic pattern images of a subject obtained by the imaging device. The detection unit performs regression analysis on at least two images of (a) the differential phase image, a differential absorption image of the absorption image and a differential small-angle scattering image of the small-angle scattering image or (b) a phase image of the differential phase image, the absorption image and the small-angle scattering image; calculates a value of an indicator indicating a relationship between the at least two images; and detects image quality deterioration due to change in relative position of the imaging device and the subject based on the value.
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公开(公告)号：EP3221848B1
公开(公告)日：2018-11-21
申请号：EP16767213.8
申请日：2016-09-14
IPC分类号： G06T11/00
CPC分类号： G06T5/002 , A61B6/482 , A61B6/5282 , G06T5/50 , G06T11/005 , G06T2207/10081 , G06T2211/408
摘要： The invention relates to an X-ray imaging device (10) for an object, an X-ray imaging system (100) for an object, an X-ray imaging method for an object, and a computer program element for controlling such device or system and a computer readable medium having stored such computer program element. The X-ray imaging device (10) comprises a receiving unit (11) and a processing unit (12). The receiving unit (11) is configured to receive attenuation data representing attenuation properties of the object for at least two different X-ray spectra. The processing unit (12) is configured to decompose the attenuation data into decomposed data, to reduce noise in the decomposed data to obtain de-noised data, to back-convert the de-noised data into back-converted attenuation data, to combine back-converted attenuation data and the attenuation data into combined attenuation data, and to decompose the combined attenuation data into combined decomposed data.
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公开(公告)号：EP2717777B1
公开(公告)日：2018-11-21
申请号：EP12728125.1
申请日：2012-05-23
CPC分类号： G06T11/005 , A61B6/032 , A61B6/037 , A61B6/5205 , A61B6/5217 , A61B6/5235 , G06T11/008
摘要： A hybrid imaging system including a first imaging system configured to acquire low resolution anatomical data of a first field of view of an anatomical structure. A second imaging system is configured to acquire functional data of the first field of view of the anatomical structure. A reconstruction processor is configured to reconstruct the functional data based on attenuation data into an attenuation corrected image. In response to the attenuation corrected image showing regions of interest, with the first imaging system or another imaging system acquiring high resolution data of one or more portions of the first field of view containing the regions of interest. The reconstruction processor reconstructs the high resolution anatomical data into one or more high resolution images of the regions of interest.
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公开(公告)号：EP3400876A1
公开(公告)日：2018-11-14
申请号：EP18170587.2
申请日：2018-05-03
CPC分类号： A61B6/5282 , A61B6/032 , A61B6/4035 , A61B6/4085 , A61B6/483 , G01N23/046 , G06T5/00 , G06T5/002 , G06T7/0012 , G06T11/005 , G06T11/20 , G06T2207/10081 , G09B23/286 , G21K1/10 , G21K5/04
摘要： In accordance with at least some embodiments of the present disclosure, a process to estimate scattered radiation contained in x-ray projections for computed tomography (CT) reconstruction is provided. The process may construct an object model 215 based on a plurality of projection images 205 generated by CT scanning of an object using an x-ray radiation source and a detector panel. The process may construct 230 a virtual radiation source based on the x-ray radiation source, and a virtual detector panel based on the detector panel. The process may perform a simulated CT scanning 220 of the object model by simulating macroscopic behavior of particles being emitted from the virtual radiation source, passing through the object model, and being detected by the virtual detector panel. And the process may generate a simulated scatter image based on a first subset of particles scattered during the simulated CT scanning of the object model.
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公开(公告)号：EP2718870B1
公开(公告)日：2018-10-31
申请号：EP12796784.2
申请日：2012-06-04
发明人： STAR-LACK, Josh , SUN, Mingshan
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , G06T2211/412
摘要： In accordance with at least some embodiments of the present disclosure, a process for enhancing a motion-blurred image is presented. The process may include receiving a plurality of projections, wherein the plurality of projections contain computed tomography (CT) data obtained in multiple motion phases. The process may include generating an enhanced multi-phase image by performing an enhancement operation based on the plurality of projections. The process may further include generating a plurality of phase-correlated images based on the plurality of projections and the enhanced multi-phase image.
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公开(公告)号：EP3382413A1
公开(公告)日：2018-10-03
申请号：EP17162995.9
申请日：2017-03-27
发明人： Forman, Christoph , Prochaska, Ivo , Wetzl, Jens
IPC分类号： G01R33/48 , G01R33/567 , G01R33/561
CPC分类号： A61B5/055 , A61B5/0044 , A61B5/7207 , A61B2576/023 , G01R33/4822 , G01R33/5614 , G01R33/56509 , G01R33/5673 , G01R33/5676 , G06T11/005 , G06T11/008 , G06T2210/41
摘要： Die Erfindung betrifft ein Verfahren zur Erstellung von atemkorrigierten MR-Bildern eines Untersuchungsvolumens einer Untersuchungsperson bei einer Atembewegung der Untersuchungsperson, wobei das Untersuchungsvolumen das Herz beinhaltet. Es werden kontinuierlich MR-Signalen des Untersuchungsvolumens während mehrerer Herzzyklen aufgenommen, wobei ein Herzzyklus mehrere Zeitabschnitte aufweist und wobei das kontinuierliche Aufnehmen eine Aufnahme von einem 2D Navigatorbilddatensatz pro Herzzyklus während eines Zeitabschnittes des Herzzyklus aufweist, bei dem das Untersuchungsvolumen angeregt wird und ein Rohdatenraum in einem kartesischen Aufnahmemuster so mit MR-Signalen gefüllt wird, dass eine Ortsauflösung in zwei von drei Raumrichtungen des Untersuchungsvolumens erfolgt, wobei die kontinuierliche Aufnahme eine Aufnahme von mehreren 3D Bilddatensätzen in den anderen Zeitabschnitten des Herzzyklus aufweist, wobei bei der Aufnahme der Bilddatensätze ein Rohdatenraum in einem kartesischen Aufnahmemuster so mit MR-Signalen gefüllt wird, dass eine Ortsauflösung in allen drei Raumrichtungen des Untersuchungsvolumens erfolgt. Weiterhin wird die Atembewegung anhand der Navigatordatensätze bestimmt, die in den mehreren Herzzyklen aufgenommen wurden. Die bestimmte Atembewegung wird in den aufgenommenen MR-Signalen korrigiert zur Erstellung der atemkorrigierten MR-Bilder.
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