Field Map Based Automated Shimming For Organs Outside of the Human Brain
Hetherington H, Pan J, Avdievich N
Albert Einstein College of Medicine
For the brain a variety of automated non-iterative shimming methods using either columnar projections or images of phase evolution to generate B0 maps have been reported. Intrinsic to most of these methods is the assumption that there is only a single chemical species contributing to the image. While this view is valid in brain tissue, this is not necessarily true in tissues outside of the brain. We have developed a method based on B0 mapping using a modified Dixon acquisition to provide fully automated shimming of tissue where lipids dominate. We demonstrate this method in the human calf and liver.