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Abstract #3230

Phase-Cycled Balanced Steady-State Free Precession Imaging for Functional Lung Imaging at 1.5 and 3 Tesla

Efe Ilicak1, Jascha Zapp1, Safa Ozdemir1, Lothar R. Schad1, and Frank G. Zöllner1,2
1Computer Assisted Clinical Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany, 2Mannheim Institute for Intelligent Systems in Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

Functional lung imaging is of great importance for diagnosis of pulmonary diseases. Previously, a non-contrast-enhanced method called Fourier Decomposition was proposed for assessing pulmonary functions based on balanced steady-stated free precession pulse sequence. However, this pulse sequence is known to be sensitive to magnetic field inhomogeneities. Here, we propose a phase-cycled acquisition for improved robustness against field inhomogeneities. In vivo results from 1.5 T and 3 T scanners are provided to demonstrate the performance of phase-cycled acquisitions for functional lung imaging. Preliminary results indicate that phase cycling can be a viable option for reducing limitations arising from magnetic field inhomogeneities.

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