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Abstract #4258

Asymmetric Spokes: A Demonstration of Free-Breathing PTX in the Human Torso at 7T

Martijn A. Cloos1, Wonje Lee2, Graham C. Wiggins2, Daniel Sodickson2, 3

1Radiology, New York University School of Medicine, New York, NY, United States; 2Radiology, New York University Langone Medical Center, New York, NY, United States; 3The Sackler Institute of Graduate Biomedical Sciences, New York University School of Medicine, New York, NY, United States

In the recent past several publications have demonstrated parallel transmission for flip-angle homogenization at ultra-high field in the human brain. In this work we introduce, the asymmetric spokes design for slab-selective imaging with reduced echo times. To facilitate a completely free-breathing protocol, an optimized B1-mapping approach is detailed. Subsequently, the comprehensive method is demonstrated by homogenizing the flip-angle on a 6cm axial slab through the human torso at 7T using the 3DVIBE sequence.

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Keywords

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