Fig 2. Comparison of in-plane resolution and artifacts for Cartesian TRICKS (0.94 x 1.5 mm) (A, B) and HYPR TRICKS (0.47 x 0.47 mm) (C, D). Arrows in the Cartesian TRICKS images show the ghosting and black band artifacts resulting from fluctuations in signal intensity occurring during acquisition of data for a single frame, caused by changes in the concentration of contrast material. More rapid and larger fluctuations lead to more severe artifacts.