Meeting Banner
Abstract #2898

3D Dual VENC PCMRA Using Spiral Projection Imaging

Nicholas Ryan Zwart1, James Grant Pipe1

1Keller Center for Imaging Innovation, Barrow Neurological Institute, Phoenix, AZ, United States

This work focuses on the reduction of scan time required by the phase-contrast MRA technique. The proposed method consists of a 3D variable density spiral projection imaging trajectory (SPI) combined with a dual velocity encoding technique. SPI is a rapid imaging technique that improves acquisition time through the intrinsic efficiency of spirals and through undersampling. The dual-VENC method improves SNR by allowing low-VENC (high SNR) data to be reconstructed without phase aliasing of the velocity measurements.