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公开(公告)号：US12029544B2
公开(公告)日：2024-07-09
申请号：US17708111
申请日：2022-03-30
发明人： Flavio Carinci , Mario Zeller , Dominik Paul
IPC分类号： A61B5/055 , G01R33/483 , G01R33/565
CPC分类号： A61B5/055 , G01R33/4835 , G01R33/56563
摘要： The disclosure relates to techniques for acquiring measured data that has been recorded simultaneously via a magnetic resonance facility from at least two slices from an examination object comprising at least two different spin types. The techniques includes selecting a desired simultaneous recording of measured data from at least two slices in which during recording phases that generate field of view shifts have been imprinted, selecting a compensation factor to compensate for interference signals caused by the different spin types, determining a compensation phase for the phases to be imprinted in the desired recording as a function of the compensation factor, and carrying out the desired recording of measured data and/or reconstruction of image data from the measured data by applying the compensation phase that has been determined to the respective phases to be imprinted.
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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：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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公开(公告)号：US11988732B2
公开(公告)日：2024-05-21
申请号：US17708138
申请日：2022-03-30
发明人： Flavio Carinci , Mario Zeller , Dominik Paul
IPC分类号： G01R33/54 , G01R33/483
CPC分类号： G01R33/543 , G01R33/4835
摘要： An improved technique for recording of scan data is provided, which includes recording scan data from at least two slices of an examination object simultaneously by means of a magnetic resonance system. The technique includes selecting a desired simultaneous recording of scan data from at least two slices (S1, . . . , Sn), determining an artifact-preventing minimum RF pulse duration (dRF) for a desired recording, considering desired recording parameters (PA), and performing the desired recording using the determined minimum RF pulse duration.
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公开(公告)号：US20240111011A1
公开(公告)日：2024-04-04
申请号：US18374719
申请日：2023-09-29
发明人： Mario Zeller
CPC分类号： G01R33/5608 , G01R33/543 , G06T11/005 , G06T11/006
摘要： A method for creating image data of an examination object using a magnetic resonance system, including: acquiring a first and at least a second set of measurement data at least of one slice, wherein during each acquisition of measurement data different acceleration factors and/or different field of view shift factors are used; and reconstructing image data based on the acquired sets of measurement data.
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公开(公告)号：US11883147B2
公开(公告)日：2024-01-30
申请号：US17840792
申请日：2022-06-15
发明人： Flavio Carinci , Mario Zeller , Dominik Paul
IPC分类号： G01R33/48 , A61B5/055 , G01R33/483
CPC分类号： A61B5/055 , G01R33/4835
摘要： Method for operating an MR device to acquire MR data slices, wherein in a sequence section of an MR sequence, MR signals of at least two slices are measured simultaneously, and an acquisition order having an association of slices to respective sequence sections of a repetition sequence covering all slices of an associated concatenation is determined using an ordering rule. A crosstalk criterion is evaluated for the acquisition order by checking whether a first slice acquired in a last sequence section of the repetition sequence is directly adjacent to a second slice acquired in a first sequence section of the same repetition sequence. If the crosstalk criterion is fulfilled, the acquisition order is adapted according to an adaptation rule such that a larger temporal acquisition distance between the acquisition of the first and the second slices is provided.
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公开(公告)号：US11879954B2
公开(公告)日：2024-01-23
申请号：US17851317
申请日：2022-06-28
发明人： Mario Zeller
IPC分类号： G01R33/565 , A61B5/055 , G01R33/48 , G01R33/56
CPC分类号： G01R33/56527 , A61B5/055 , G01R33/4828 , G01R33/5608
摘要： In a method for correcting chemical shift artifacts, CSA, a convolutional neural network (CNN) may be provided, which is trained using acquisition data acquired in phase and in opposed phase by a DIXON MR method that may include acquisition data that contains CSA in mutually opposite directions and acquisition data that contains CSA only in one direction. The CNN may be trained to transform acquisition data obtained by the fast DIXON MR method so the acquisition data acquired by the fast DIXON MR method exhibits CSA that arise only in the same direction. The method may further include acquiring fast DIXON MR acquisition data using respective control instructions and applying the trained CNN to the acquisition data to minimize or entirely remove the CSA and to calculate corrected acquisition data. The CSA may arise in the magnetic resonance DIXON method when using fast DIXON MR to capture the echoes.
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公开(公告)号：US20240016408A1
公开(公告)日：2024-01-18
申请号：US18222624
申请日：2023-07-17
发明人： Mario Zeller
IPC分类号： A61B5/055 , G01R33/56 , G01R33/561
CPC分类号： A61B5/055 , G01R33/5608 , G01R33/5611
摘要： A computer-implemented method for assessing an image-generating procedure of magnetic resonance imaging, wherein in the image-generating procedure, an image recording procedure using at least one accelerating technique is combined with a reconstruction procedure comprising a reconstruction function trained using machine learning, wherein the method includes: establishing a spatially resolved image quality metric for a magnetic resonance image generated with the image-generating procedure; evaluating the image quality metric using at least one measure criterion with which at least one notification and/or adaptation measure is associated; and carrying out the at least one notification and/or adaptation measure for each fulfilled measure criterion.
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公开(公告)号：US11782117B2
公开(公告)日：2023-10-10
申请号：US17708416
申请日：2022-03-30
发明人： Mario Zeller , Adam Kettinger
IPC分类号： G01R33/58 , G01R33/561
CPC分类号： G01R33/58 , G01R33/561
摘要： To acquire measurement data of an object, a first subsampled set of diffusion-weighted measurement data with switching of diffusion gradients for diffusion encoding of the measurement data, using a first echo spacing, and a second subsampled set of non-diffusion-weighted measurement data, using the first echo spacing, are acquired. The first and second subsampled sets of measurement data are supplemented using calibration data to produce first and second complete sets of measurement data. At least the first calibration data, acquired using the first echo spacing, may be used for supplementing the second subsampled set of measurement data to produce a second complete set of measurement data. By supplementing subsampled sets of measurement data with calibration data acquired according to the same echo spacing as the subsampled measurement data, noise signals in the supplemented measurement data are advantageously eliminated.
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公开(公告)号：US11747425B2
公开(公告)日：2023-09-05
申请号：US17709654
申请日：2022-03-31
发明人： Mario Zeller , Flavio Carinci
IPC分类号： G01V3/00 , G01R33/565 , G01R33/483 , G01R33/48
CPC分类号： G01R33/56509 , G01R33/4826 , G01R33/4835
摘要： A method for reconstructing single-slice image data sets from k-space measured data sets that have been acquired simultaneously from at least two slices from an examination object. The method includes an iterative modification and hence an optimization of the underlying k-space trajectories in the reconstruction of individual image data sets from collapsed measured data sets acquired from a plurality of slices and hence a retrospective reduction of interference in the individual image data sets that are obtained.
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