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Abstract #1135

Simultaneous Imaging of the Entire Lung and Heart with Isotropic Resolution in Free-Breathing

Zekang Ding1, Huajun She1, and Yiping P. Du1
1National Engineering Research Center of Advanced Magnetic Resonance Technologies for Diagnosis and Therapy, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China

Synopsis

Keywords: Data Acquisition, Acquisition Methods

Motivation: Simultaneous imaging of the entire lung and heart with isotropic resolution in free-breathing allows the diagnosis of cardiopulmonary disorders with reduced scan time and minimal requirement for patient compliance.

Goal(s): A technique is proposed for simultaneous acquisition of cardiopulmonary MRI with isotropic resolution in free-breathing.

Approach: This technique is based on a 3D dual-echo bSSFP radial sequence, combined with SI-navigated interleaved acquisition, motion resolving, and a subspace-based motion-compensated reconstruction algorithm.

Results: Five-dimensional dynamic images of the entire lung and heart with isotropic resolution of 1.5×1.5×1.5mm3 were obtained through a single free-breathing scan of less than 10 minutes.

Impact: Comprehensive assessment of the structures/functions of the cardiopulmonary system and the cardiopulmonary interaction is feasible using the proposed technique in a single free-breathing scan.

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