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公开(公告)号：US10151813B2
公开(公告)日：2018-12-11
申请号：US15196305
申请日：2016-06-29
发明人： Martijn Cloos , Lars Lauer , Daniel Sodickson , Graham Wiggins
IPC分类号： G01R33/48 , G01R33/483 , G01R33/34 , G01R33/36 , G01R33/341 , G01R33/3873 , G01R33/3875 , G01R33/561
摘要： In a magnetic resonance (MR) apparatus and a method for operation thereof, the radio-frequency (RF) resonator of the scanner of the apparatus fed from a single RF source and is operated, during a total scan duration for acquiring MR scan data from a subject, so as to excite nuclear spins in the subject with respective RF fields having different B1+ field profiles that are radiated at respectively different times during the acquisition of the scan data. The scan data acquired during the scan thus are produced from MR signals caused by nuclear spins excited by at least two different B1+ field profiles. The scan can be used to acquire MR data for MR fingerprinting.
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公开(公告)号：US10725132B2
公开(公告)日：2020-07-28
申请号：US15822474
申请日：2017-11-27
发明人： Martijn Cloos , Tom Hilbert , Tobias Kober
摘要： In a magnetic resonance (MR) apparatus, and model-based method, for identifying a nuclear spin-dependent attribute of a subject, MR signals are acquired in multiple repetitions of an MR data acquisition sequence that is changed from repetition-to-repetition so as to deliberately encode effects of magnetization transfer between nuclear spins into the acquired MR signals. A model is generated, composed of at least two molecule pools, in which a single magnetization transfer parameter is used that is derived from the MR signals in which the magnetization transfer is encoded. A nuclear spin-dependent attribute of the subject is then identified, by comparing at least one MR signal evolution from the subject to at least one signal evolution produced by the model.
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