Ryan Keith Robison1, James Grant Pipe1
1Keller Center for Imaging Innovation, Barrow Neurological Institute, Phoenix, AZ, USA
Spiral Projection Imaging (SPI) is a fast, versatile 3D data acquisition. It has many potential benefits over Cartesian imaging including flow insensitivity, PROPELLER like motion correction in three dimensions, and a smaller number of required excitations. Unfortunately, as with many other spiral based sequences, SPI is degraded by artifacts from gradient inconsistencies and off-resonance blurring. In this study many of the artifacts seen in T1 weighted spoiled gradient SPI are illustrated and analyzed. Comparisons to similar Cartesian images are shown for phantom and volunteer data.
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