Nonuniform fast Fourier transforms (NUFFTs) must be used for spiral sampling magnetic resonance imaging (MRI) trajectories, because they restore O(N log N)-complexity processing. Recently we proposed a 1-D NUFFT using an optimized interpolation window, reaching an accuracy close to double precision and gaining almost one order of magnitude in terms of root-mean-square accuracy against state-ofthe-art techniques. We here extend it to 2-D and apply the NUFFT to spiral MRI scans. The results show the extreme accuracy of the proposed approach.
Optimized 2-D NUFFTs for Spiral Scanning in MRI / Capozzoli, Amedeo; Curcio, Claudio; Liseno, Angelo. - In: RADIO SCIENCE LETTERS. - ISSN 2736-2760. - 2:(2020), pp. 1-5. [10.46620/20-0020]
Optimized 2-D NUFFTs for Spiral Scanning in MRI
Capozzoli Amedeo;Curcio Claudio;Liseno Angelo
2020
Abstract
Nonuniform fast Fourier transforms (NUFFTs) must be used for spiral sampling magnetic resonance imaging (MRI) trajectories, because they restore O(N log N)-complexity processing. Recently we proposed a 1-D NUFFT using an optimized interpolation window, reaching an accuracy close to double precision and gaining almost one order of magnitude in terms of root-mean-square accuracy against state-ofthe-art techniques. We here extend it to 2-D and apply the NUFFT to spiral MRI scans. The results show the extreme accuracy of the proposed approach.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
