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Abstract #3404

Improved algorithm for navigator-based free breathing cardiac diffusion tensor imaging

Fang Dong1 and Shi Cheng1

1Siemens Shenzhen Magnetic Resonance Ltd., ShenZhen, People's Republic of China

Cardiac diffusion tensor imaging is an effective way to depict the fiber structure of the myocardium. A navigator(NAV)-based stimulated-echo (STEAM) method was proposed by Nielles-Vallespin to obtain cDTI in vivo. However, its use of a biofeedback process where the subjects had to adapt their breathing pattern in real-time can hinder its clinical implementation. In this abstract, we optimized the NAV accept/reject algorithm, using which the scanning efficiency and the image SNR were both largely improved. Therefore, our work laid a great foundation for the clinical use of free breathing cDTI in the future.

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