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• W2904374699 abstract "We propose a patch-based singular value shrinkage method for diffusion magnetic resonance image estimation targeted at low signal to noise ratio and accelerated acquisitions. It operates on the complex data resulting from a sensitivity encoding reconstruction, where asymptotically optimal signal recovery guarantees can be attained by modeling the noise propagation in the reconstruction and subsequently simulating or calculating the limit singular value spectrum. Simple strategies are presented to deal with phase inconsistencies and optimize patch construction. The pertinence of our contributions is quantitatively validated on synthetic data, an in vivo adult example, and challenging neonatal and fetal cohorts. Our methodology is compared with related approaches, which generally operate on magnitude-only data and use data-based noise level estimation and singular value truncation. Visual examples are provided to illustrate effectiveness in generating denoised and debiased diffusion estimates with well preserved spatial and diffusion detail." @default.
• W2904374699 created "2018-12-22" @default.
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• W2904374699 date "2018-12-14" @default.
• W2904374699 modified "2023-09-27" @default.
• W2904374699 title "Complex diffusion-weighted image estimation via matrix recovery under general noise models" @default.
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• W2904374699 hasPublicationYear "2018" @default.
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