Abstract #1821

Multi-blade Acquisition of Split Turbo Spin Echoes: A Robust and Fast Diffusion Imaging Technique

Kun Zhou¹ and Wei Liu¹

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

A turbo spin echo based sequence for robust and fast diffusion imaging is proposed. It overcomes the non-CPMG problem by split-echo acquisition of turbo spin echo signals. EPI-like readout is used to sample the separated echoes and generate multiple blades for a single k-space. Each blade was corrected for both the inherent phase of separated echoes and off-resonance phase, to avoid the destructive inference. With this technique, the non-CPMG problem can be effectively mitigated at low flip angle refocusing pulses to reduce SAR. Moreover, the off-resonance artifacts can also be reduced especially when high acceleration factor is applied.

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