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- Title
Improving the robustness of 3D turbo spin echo imaging to involuntary motion.
- Authors
Li, Guobin; Zaitsev, Maxim; Büchert, Martin; Raithel, Esther; Paul, Dominik; Korvink, Jan; Hennig, Jürgen
- Abstract
Objective: 3D TSE imaging is very prone to motion artifacts, especially from uncooperative patients, because of the long scan duration. The need to repeat this time-consuming 3D acquisition in the event of large motion artifacts substantially reduces patient comfort and increases the workload of the scanner. Materials and methods: A new sampling strategy enables homogenized collection of k-space data for 3D TSE imaging. It is combined with Frobenius norm-based motion-detection to enable freely stopped acquisition in 3D TSE imaging whenever excessive subject motion is detected. Results: The feasibility and reliability of the proposed method were demonstrated and evaluated in in-vivo experiments. Conclusion: It is shown that the additional overhead related to repeat scanning of the 3D TSE sequence as a result of patient motion can be substantially reduced by using the homogenized k-space sampling strategy with automatic scan completion as determined by Frobenius norm-based motion-detection.
- Subjects
THREE-dimensional imaging; COMPRESSED sensing; K-spaces; FROBENIUS algebras; SCANNING systems
- Publication
MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2015, Vol 28, Issue 4, p329
- ISSN
0968-5243
- Publication type
Article
- DOI
10.1007/s10334-014-0471-2