Improved MRI Reconstruction Using a Singular Value Decomposition Approximation
| Autor: | Davi Marco Lyra-Leite, João Paulo Carvalho Lustosa da Costa, João Luiz Azevedo de Carvalho |
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| Jazyk: | Spanish; Castilian |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Ingeniería, Vol 17, Iss 2, Pp 35-45 (2012) |
| Druh dokumentu: | article |
| ISSN: | 0121-750X 2344-8393 |
| Popis: | The reconstruction of magnetic resonance imaging (MRI) data can be a computationally demanding task. Signal-to-noise ratio is also a concern, especially in high-resolution imaging. Data compression may be useful not only for reducing reconstruction complexity and memory requirements, but also for reducing noise, as it is capable of eliminating spurious components. This work proposes the use of a singular value decomposition low-rank approximation for reconstruction and denoising of MRI data. The Akaike Information Criterion is used to estimate the appropriate model order, which is used to remove noise components and to reduce the amount of data to be stored and processed. The proposed method is evaluated using in vivo MRI data. We present images reconstructed using less than 20% of the original data size, and with a similar quality in terms of visual inspection. A quantitative evaluation is also presented. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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