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• W3155079695 abstract "Oscillating Steady-State Imaging (OSSI) is a recent fMRI acquisition method that exploits a large and oscillating signal, and can provide high SNR fMRI. However, the oscillatory nature of the signal leads to an increased number of acquisitions. To improve temporal resolution and accurately model the nonlinearity of OSSI signals, we build the MR physics for OSSI signal generation as a regularizer for the undersampled reconstruction rather than using subspace models that are not well suited for the data. Our proposed physics-based manifold model turns the disadvantages of OSSI acquisition into advantages and enables joint reconstruction and quantification. OSSI manifold model (OSSIMM) outperforms subspace models and reconstructs high-resolution fMRI images with a factor of 12 acceleration and without spatial or temporal resolution smoothing. Furthermore, OSSIMM can dynamically quantify important physics parameters, including $R_2^*$ maps, with a temporal resolution of 150 ms." @default.
• W3155079695 created "2021-04-26" @default.
• W3155079695 creator A5027207271 @default.
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• W3155079695 date "2021-04-16" @default.
• W3155079695 modified "2023-09-27" @default.
• W3155079695 title "Manifold Model for High-Resolution fMRI Joint Reconstruction and Dynamic Quantification" @default.
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• W3155079695 hasPublicationYear "2021" @default.
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