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- W792056844 abstract "In this PhD thesis a generic solution forreal-time MRI was developed based on a comprehensive analysis ofthe physical requirements. The method combines the fast low angleshot (FLASH) acquisition principle with a radial k-space encoding,and thus meets all fundamental challenges for real-time MRI. Inparticular, this refers to rapid and continuous imaging, motionrobustness, and patient safety. Gridding reconstructions provideimages free from streaking or motion artifacts. Moreover, a channelcompression technique for receiver coils with a large number ofcoil elements, which employs an online principal componentanalysis, allows for a fast image reconstruction and displaywithout noticeable delay. A sliding-window and data view-sharingtechnique ensures high frame rates of up to 40 Hz and a flexibleadjustment of the spatial and temporal resolution. Experimentalvalidations with human subjects excluded, for the first time,balanced SSFP variants for real-time MRI due to their inherentsensitivity to magnetic field inhomogeneities and magneticsusceptibility differences. On the other hand, when based onspoiled or refocused radial FLASH variants, the proposed real-timeMRI technique achieved excellent image quality in terms ofsignal-to-noise ratio, multiple contrast capabilities, spatialaccuracy, and temporal fidelity. The ease of implementation on acommercial MRI system without modification of the hardware offerswidespread distribution and applicability. Preliminary applicationsdealt with an assessment of the temporomandibular joint function, avisualization of articulators during speech production, and imagingof the cardiovascular system during free breathing and withoutsynchronization to the electrocardiogram. These results demonstratea tremendous potential for a wide range of clinical and scientificquestions." @default.
- W792056844 created "2016-06-24" @default.
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- W792056844 date "2010-01-26" @default.
- W792056844 modified "2023-10-16" @default.
- W792056844 title "Real-time Magnetic Resonance Imaging" @default.
- W792056844 hasPublicationYear "2010" @default.
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