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21.发明公开公开(公告)号：US20240210500A1
公开(公告)日：2024-06-27
申请号：US18525054
申请日：2023-11-30
发明人： Florian Maier , Martin Requardt
IPC分类号： G01R33/28 , A61B90/00 , G01R33/483 , G01R33/56
CPC分类号： G01R33/287 , A61B90/37 , G01R33/4835 , G01R33/5608 , A61B2090/374
摘要： A magnetic resonance tomography device and a method for equalized mapping in real time are provided. A first slice and a second slice are captured in three-dimensional (3D) encoding, where the first slice and the second slice are oriented to one another at an angle, and an instrument or trajectory to be mapped lies in an intersecting set of both the first slice and the second slice. A two-dimensional (2D) image may be generated alternately from both the first slice and the second slice and is displayed to a user.
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22.发明授权公开(公告)号：US12016710B2
公开(公告)日：2024-06-25
申请号：US17233988
申请日：2021-04-19
发明人： Jun Xiong , Kun Zhu , Fang Yong Sun , Hui Song , Xu He
CPC分类号： A61B6/0407 , A61B5/0033 , A61B6/0492 , A61B6/5294
摘要： The disclosure relates to techniques for scan preparation in a medical imaging system. The technique includes triggering a 3D camera acquiring a 2D color and depth image of a patient when a patient bed is at an origin position, inputting the image into a pre-trained first body information model to obtain position information of multiple body feature site points, and calculating position information of multiple candidate scanning regions in the patient bed coordinate system. The technique further includes providing the position information of the multiple candidate scanning regions to a medical imaging application apparatus, so that the medical imaging application apparatus determines position information of a current scanning region in the patient bed coordinate system and controls the patient bed to move the current scanning region to a scanning center of a medical imaging device according to the position of the patient bed relative to the scanning center.
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公开(公告)号：US20240203582A1
公开(公告)日：2024-06-20
申请号：US18525030
申请日：2023-11-30
发明人： Elisabeth Preuhs , Markus Kowarschik , Christian Kaethner , Marcus Pfister , Anne Tjorven Büßen
摘要： A system for monitoring a physiological state of an object under examination in remotely controlled procedures includes a remote control unit for remote control of a remote manipulation unit, the remote manipulation unit for performing a procedure step, a capture unit for capturing state data of the object under examination, and a provider unit for classifying the state of the object under examination. When an expected state is present, the remote manipulation unit performs the procedure step. When a deviating state is present, the provider unit provides a remote signal to the remote control unit and a local signal to the output unit, the output unit outputs to local operating personnel a first workflow notice, and the remote control unit adjusts the remote control of the remote manipulation unit, outputs a second workflow notice to the remote operating personnel, and/or provides an alternative remote control signal.
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公开(公告)号：US20240201300A1
公开(公告)日：2024-06-20
申请号：US18522591
申请日：2023-11-29
发明人： Max Müller , Mario Zeller , Adam Kettinger , Dominik Paul , Thorsten Feiweier , Gudrun Ruyters , Michael Köhler
CPC分类号： G01R33/543 , G01R33/288 , A61B5/055
摘要： A method for determining a parameter setting for a gradient power of a magnetic resonance system by an electronic computing device. The method includes specifying a limit value for a nerve stimulation in the case of a person positioned in the magnetic resonance system, entering at least one gradient parameter for a pulse of the gradient power as the parameter setting by an input device of the electronic computing device, approximating a potential nerve stimulation as a function of the at least one gradient parameter by a predefined mathematical model of the electronic computing device, comparing the approximated potential nerve stimulation with the predefined limit value by the electronic computing device, and determining the parameter setting as a function of the comparison.
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公开(公告)号：US20240201289A1
公开(公告)日：2024-06-20
申请号：US18519631
申请日：2023-11-27
发明人： Volker Schnetter
IPC分类号： G01R33/28
CPC分类号： G01R33/288
摘要： A method performed by an MRI system includes: receiving at least one object parameter value of an object to be examined in accordance with a predefined MRI protocol; determining a frequency distribution of deposition values of examined objects, each having the at least one object parameter value, from available MRI examination datasets; determining, by a control unit of the MRI system, a reference deposition value of the examined objects, each having the at least one object parameter value, from the frequency distribution of the deposition values of the examined objects, each having the at least one object parameter value, for a predefined reference proportion in accordance with a predefined reference determining procedure; and determining, as a function of the reference deposition value, at least one MRI protocol parameter of the predefined MRI protocol for examining the object to be examined, in accordance with a predefined MRI protocol optimization procedure.
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公开(公告)号：US12008759B2
公开(公告)日：2024-06-11
申请号：US17101069
申请日：2020-11-23
CPC分类号： G06T7/0016 , G06N3/08 , G06T7/38 , G16H30/20 , G06T2207/10088 , G06T2207/20081 , G06T2207/20084 , G06T2207/20224
摘要： A computer-implemented method for identifying pathological changes in follow-up medical images is provided. In an embodiment, the method includes: providing reference image data showing a body part of a patient at a first time; providing follow-up image data showing a body part of a patient at a subsequent second time; generating one or more deformation fields for the reference image data and the follow-up image data describing anatomical deformations in the body part between the reference image data and the follow-up image data using at least one image registration; aligning the reference image data and the follow up image data using the one or more deformation fields to generate co-aligned image data; analyzing the co-aligned image data to identify pathological changes in the body part from the reference image data to the follow image data using a machine learned network trained to recognize pathological relevant changes in co-aligned image data.
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公开(公告)号：US12008687B2
公开(公告)日：2024-06-11
申请号：US17174471
申请日：2021-02-12
发明人： Yue Zhang , Abdoul Amadou , Ingmar Voigt , Viorel Mihalef , Rui Liao , Tommaso Mansi , Matthias John , Bimba Rao , Helene C. Houle
CPC分类号： G06T11/003 , G06T7/0012 , G06T2207/10088 , G06T2207/10116 , G06T2207/10132 , G06T2207/20081 , G06T2207/30084
摘要： A method, apparatus, and computer readable storage medium are provided herein for constructing a representation of an annular structure associated with an anatomical object. The method includes receiving three-dimensional image data of the anatomical object and detecting at least a first landmark point and a second landmark point on the annular structure. A plane positioned between the first landmark point and the second landmark point, and oriented in accordance with a predefined angular relationship to a line connecting the first landmark point and the second landmark point is determined. A third landmark point on the annular structure which lies in the plane is also detected and the representation of the annular structure is generated using at least the first landmark point, the second landmark point, and the third landmark point. The representation is then outputted.
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公开(公告)号：US12007456B2
公开(公告)日：2024-06-11
申请号：US18079525
申请日：2022-12-12
发明人： Ying Lun Wang , Qiu Yi Zhang , Zhi Bin Li
IPC分类号： G01R33/32 , G01R33/422
CPC分类号： G01R33/422 , G01R33/32
摘要： A method and apparatus for limiting an RF alternating magnetic field in MRI. The method includes: measuring a perpendicular distance between a local coil placed on a scanned part of a patient and the center of a detection hole of a magnetic resonance (MR) scanner; based on the perpendicular distance, determining a deviation between the B1 field strength at the position of the local coil during an MR scan and the B1 field strength at the center of the detection hole; based on the deviation, computing a conversion coefficient for conversion between the B1 field strength at the position of the local coil and the B1 field strength at the center of the detection hole; based on the B1 field strength required when the surface temperature of the local coil is equal to a safe temperature upper limit and the conversion coefficient, computing a maximum permissible field strength of the B1 field at the center of the detection hole. The B1 field may be limited to a smaller but still effective field strength range, reducing wastage of B1 field performance while ensuring patient safety and MR imaging quality.
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公开(公告)号：US11998376B2
公开(公告)日：2024-06-04
申请号：US18212864
申请日：2023-06-22
CPC分类号： A61B6/4458 , A61B6/4441 , G06T7/0012 , G16H50/20 , A61B6/405 , G06T2207/20081
摘要： A computer-implemented method for generating training data for training an algorithm for estimating positioning variances in an imaging apparatus of an x-ray imaging system is provided. The method includes predetermining target positioning data for the imaging apparatus and calculating faulty positioning data, wherein the faulty positioning data deviates from the target positioning data by at least one predetermined positioning variance. An imaging method is simulated, in order to generate two or more simulated x-ray recordings, wherein a positioning of the imaging apparatus is simulated in accordance with the faulty positioning data. An annotated training data record is generated and stored, wherein the training data record contains two or more simulated x-ray recordings and at least one positioning variance as an annotation of the two or more simulated x-ray recordings.
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公开(公告)号：US11998361B2
公开(公告)日：2024-06-04
申请号：US17680097
申请日：2022-02-24
发明人： Mario Zeller , David Grodzki
IPC分类号： A61B5/05 , A61B5/00 , A61B5/055 , A61B5/11 , G01R33/565
CPC分类号： A61B5/721 , A61B5/004 , A61B5/055 , A61B5/1114 , A61B5/7289 , A61B5/7292 , G01R33/56509 , A61B2562/0219 , A61B2562/164
摘要： The disclosure relates to an imaging apparatus for acquiring image data from a diagnostically-relevant body region of a patient comprising a sensor and a correction unit, wherein the at least one sensor is embodied to output a signal containing information on movement of the diagnostically relevant body region of the patient and the correction unit is embodied to receive the signal from the at least one sensor, and to apply a correction method in dependence on the signal to reduce the influence of the movement of the diagnostically relevant body region of the patient on an imaging examination. The disclosure further relates to a local coil for acquiring magnetic resonance signals in a frequency and power range of a magnetic resonance measurement, and a method for correcting patient movement.
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