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公开(公告)号：US20170153308A1
公开(公告)日：2017-06-01
申请号：US15366565
申请日：2016-12-01
IPC分类号： G01R33/3875 , G01R33/54 , G01R33/44
CPC分类号： G01R33/3875 , G01R33/56563
摘要： Calculation of shim settings for magnetic resonance imaging includes defining an examination volume for the magnetic resonance imaging in a body of the examination object, determining a local shim volume, which includes a subregion of the examination volume, calculating shim settings, wherein a tissue, which is present in the local shim volume, of the body of the examination object is incorporated into the calculation of the shim settings, and acquiring magnetic resonance raw data of the examination volume by operation of a magnetic resonance scanner, using the calculated shim settings.
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公开(公告)号：US20230293040A1
公开(公告)日：2023-09-21
申请号：US18121719
申请日：2023-03-15
发明人： Michael Wullenweber
CPC分类号： A61B5/061 , G01R33/34 , A61B5/055 , G06T7/70 , G06T2207/10088
摘要： A technique is provided for determining a position of a coil element of a radiofrequency coil (RF) for placement into a patient placement region of a magnetic resonance (MR) apparatus. A magnetic resonance sequence is output via a radiofrequency (RF) antenna, which is arranged inside a scanner unit of the MR apparatus, first MR data is captured via the RF antenna, and second MR data is captured via the coil element. First MR images are ascertained from the first MR data, and second MR images are ascertained from the first MR data and the second MR data. Moreover, a similarity measure is determined from the first MR images and the second MR images, and an effective range of the coil element is determined from the first MR images and the second MR images. The effective range comprises a position of the coil element of the RF coil.
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公开(公告)号：US20210088613A1
公开(公告)日：2021-03-25
申请号：US17024977
申请日：2020-09-18
摘要： A method and a system for providing parameters of a resonance frequency spectrum of a magnetic resonance scan. The system includes: an input interface for receiving a resonance frequency spectrum of a magnetic resonance scan and a computing device configured to implement a trained machine learning algorithm. The trained machine learning algorithm is trained to receive the resonance frequency spectrum received by the input interface as its input and to generate as its output a set of parameters of the resonance frequency spectrum. The system further includes an output interface configured to output the generated set of parameters.
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公开(公告)号：US20230209791A1
公开(公告)日：2023-06-29
申请号：US18090846
申请日：2022-12-29
发明人： Johann Sukkau , Michael Wullenweber
IPC分类号： H05K9/00
CPC分类号： H05K9/0052 , H05K9/0069
摘要： A curtain for shielding an electromagnetic field may include a plurality of strip elements. A first strip element and a second strip element of the plurality of strip elements may have an electrically conductive layer. In a shielding configuration of the curtain, the electrically conductive layer of the first strip element is electrically connected to the electrically conductive layer of the second strip element and/or to an electrical connecting terminal for a reference potential. The plurality of strip elements can be variably positioned against one another.
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公开(公告)号：US20220099766A1
公开(公告)日：2022-03-31
申请号：US17490206
申请日：2021-09-30
摘要： A computer-implemented method for provision of a result dataset having position information of a local radio-frequency coil, including: providing input data having at least magnetic resonance data, which is acquired by means of the local radio-frequency coil; determining a result dataset by applying a trained function to the input data, wherein the result dataset comprises position information for determining the position of the local radio-frequency coil; and providing the result dataset.
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公开(公告)号：US10386434B2
公开(公告)日：2019-08-20
申请号：US15907327
申请日：2018-02-28
IPC分类号： G01R33/54 , G01R33/565
摘要： A method is for carrying out an automatic adjustment of an MR system, including a number of receive coils. In such cases, a number of partial spectra in a number of receive coils are measured for an excitation volume of an examination object. The number of partial spectra are evaluated via an algorithm, at least one characteristic value being determined for each partial spectrum and a decision being further made with the aid of the number of characteristic values to determine whether the partial spectra fulfill a quality criterion. Finally, adjustment parameters of the MR system are optimized on the basis of the number of partial spectra.
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公开(公告)号：US10288709B2
公开(公告)日：2019-05-14
申请号：US15378409
申请日：2016-12-14
IPC分类号： G01R33/44 , G01R33/54 , G01R33/3875
摘要： In a method for operating a medical imaging apparatus having multiple sub-systems controlled by a controller in a coordinated manner in order to perform a measurement sequence, a number of first setting parameters are chosen to be constant for a complete measurement sequence, and after a static adjustment, a dynamic adjustment of second setting parameters, which are defined by control signals for the measurement sequence and that can vary while a measurement sequence is being performed, takes place. Base data defining underlying conditions specific to the patient to be imaged are measured for the total imaging volume in a measurement sequence. Reference values for the setting parameters that affect the underlying conditions are saved in association with the base data during the measurement sequence. If the present values of the setting parameters adjusted during the static adjustment differ from the reference values, updated base data are calculated based on the difference between the present values and the reference values, and the current base data are used for local optimization in the dynamic adjustment.
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8.发明申请公开(公告)号：US20170168128A1
公开(公告)日：2017-06-15
申请号：US15378409
申请日：2016-12-14
IPC分类号： G01R33/54 , G01R33/44 , G01R33/3875
CPC分类号： G01R33/543 , G01R33/3875 , G01R33/443
摘要： In a method for operating a medical imaging apparatus having multiple sub-systems controlled by a controller in a coordinated manner in order to perform a measurement sequence, a number of first setting parameters are chosen to be constant for a complete measurement sequence, and after a static adjustment, a dynamic adjustment of second setting parameters, which are defined by control signals for the measurement sequence and that can vary while a measurement sequence is being performed, takes place. Base data defining underlying conditions specific to the patient to be imaged are measured for the total imaging volume in a measurement sequence. Reference values for the setting parameters that affect the underlying conditions are saved in association with the base data during the measurement sequence. If the present values of the setting parameters adjusted during the static adjustment differ from the reference values, updated base data are calculated based on the difference between the present values and the reference values, and the current base data are used for local optimization in the dynamic adjustment.
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公开(公告)号：US11719776B2
公开(公告)日：2023-08-08
申请号：US17490206
申请日：2021-09-30
CPC分类号： G01R33/34092 , A61B5/055 , G01R33/5608
摘要： A computer-implemented method for provision of a result dataset having position information of a local radio-frequency coil, including: providing input data having at least magnetic resonance data, which is acquired by means of the local radio-frequency coil; determining a result dataset by applying a trained function to the input data, wherein the result dataset comprises position information for determining the position of the local radio-frequency coil; and providing the result dataset.
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公开(公告)号：US11454688B2
公开(公告)日：2022-09-27
申请号：US17024977
申请日：2020-09-18
摘要： A method and a system for providing parameters of a resonance frequency spectrum of a magnetic resonance scan. The system includes: an input interface for receiving a resonance frequency spectrum of a magnetic resonance scan and a computing device configured to implement a trained machine learning algorithm. The trained machine learning algorithm is trained to receive the resonance frequency spectrum received by the input interface as its input and to generate as its output a set of parameters of the resonance frequency spectrum. The system further includes an output interface configured to output the generated set of parameters.
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