Search Results for author: Mehmet Akcakaya

Found 4 papers, 2 papers with code

Zero-Shot Physics-Guided Deep Learning for Subject-Specific MRI Reconstruction

no code implementations NeurIPS Workshop Deep_Invers 2021 Burhaneddin Yaman, Seyed Amir Hossein Hosseini, Mehmet Akcakaya

In the presence of models pre-trained on a database, we show that the proposed approach can be adapted as subject-specific fine-tuning via transfer learning to further improve reconstruction quality.

Anatomy MRI Reconstruction +2

Deep Learning Methods for Parallel Magnetic Resonance Image Reconstruction

no code implementations1 Apr 2019 Florian Knoll, Kerstin Hammernik, Chi Zhang, Steen Moeller, Thomas Pock, Daniel K. Sodickson, Mehmet Akcakaya

Both linear and non-linear methods are covered, followed by a discussion of recent efforts to further improve parallel imaging using machine learning, and specifically using artificial neural networks.

BIG-bench Machine Learning MRI Reconstruction

Sparse Phase Retrieval via Truncated Amplitude Flow

1 code implementation23 Nov 2016 Gang Wang, Liang Zhang, Georgios B. Giannakis, Mehmet Akcakaya, Jie Chen

Upon formulating sparse PR as an amplitude-based nonconvex optimization task, SPARTA works iteratively in two stages: In stage one, the support of the underlying sparse signal is recovered using an analytically well-justified rule, and subsequently, a sparse orthogonality-promoting initialization is obtained via power iterations restricted on the support; and, in the second stage, the initialization is successively refined by means of hard thresholding based gradient-type iterations.

Information Theory Information Theory Optimization and Control

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