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Abstract #3635

3D MP-RAGE with Distributed Spirals

Dinghui Wang 1 , Zhiqiang Li 1 , and James G. Pipe 1

1 Neuroimaging Research, Barrow Neurological Institute, Phoenix, Arizona, United States

3D MP-RAGE was implemented with distributed spirals (DS) to increase scan efficiency and flexibility of scan parameters. Water and fat were separated and deblurred using data collected from two interleaved TEs. Data were acquired with different readout times. Compared to Cartesian reference images, spiral images showed similar overall contrast and sharpness, and higher signal to noise ratio (SNR) despite of shorter scan times. As the spiral readout time increases, the SNR increases and the total scan time decreases. The results suggest the feasibility of 3D DS MP-RAGE with readout time up to 20ms for high-resolution anatomical neuroimaging.

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