  Compressed sensing has reinvigorated the field of non-Cartesian sampling in
magnetic resonance imaging (MRI). Until now there has been no 3D radial
view-order which meets all the desired characteristics for simultaneous
dynamic/high-resolution imaging, such as for self-navigated motion-corrected
high resolution neuroimaging. In this work, we examine the use of Hierarchical
Equal Area iso-Latitude Pixelization (HEALPix) for generation of
three-dimensional (3D) radial view-orders for MRI, and compare to a selection
of commonly used 3D view-orders. The resulting trajectories were evaluated
through simulation of the point spread function and slanted surface object
suitable for modulation transfer function, contrast ratio, and SNR measurement.
Results from the HEALPix view-order were compared to Generalized Spiral, 2D
Golden Means, and Random view-orders. Finally, we show the first use of the
HEALPix view-order to acquire in-vivo brain images.
