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Abstract #4185

Accelerated Spiral Turbo-Spin-Echo Sequence with Split Spiral In-out Acquisition

Xi Peng1, Daniel Borup2, and James Pipe1
1Mayo Clinic, Rochester, MN, United States, 2Philips Healthcare, Rochester, MN, United States

Cartesian Turbo-spin-echo (TSE) has been widely used in routine clinical MRI but is subject to high specific absorption rate (SAR) and altered contrast due to long RF pulse train and reduced RF refocusing flip angles. As an alternative, spiral-TSE has been developed to produce low-SAR and improved contrast for fast T2-weighted imaging. In this work, we accelerate a previous spiral-TSE method by a factor of 2 using a split spiral-inout acquisition strategy with reversed arm orderings to intrinsically compensate for the T2-decay induced artifacts. In vivo brain experiment has been performed to demonstrate the feasibility of the proposed acquisition scheme.

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