Figure 11

Gradient crusher induced artifacts can be eliminated with software crushers. In images A-C real crushers have been used. (A) shows an image with a fast execution time kernel (6 min) with a stripe pattern artifact related to low isochromat density (volume size: 0.5 mm × 0.5 mm × 1 mm, total number of tissue isochromats: 10000) (B) increasing medium isochromat density reduces the stripe artifact (volume size: 0.25 mm × 0.25 mm × 1 mm, total number of tissue isochromats: 40000, Kernel execution time: 13 min) (C) Using a high isochromats density eliminates the artifact at the expense of prolonged execution times (isochromat volume size: 0.1 mm × 0.1 mm × 1 mm, total number of tissue isochromats: 250000, Kernel execution time: 60 min) (D) With software gradient crushers (all other parameters as in A) and low isochromats density the artifact is not visible (Kernel execution time: 6 min). All experiments were run on a 4×C2075 system.