Echo combination to reduce temperature measurement errors in the presence of fat
Rieke V, Butts Pauly K
Lipids create errors in temperature estimation with the proton resonant frequency (PRF) shift method. Fat suppression is commonly used in tissues with lipid content, but increases imaging time and is difficult at low field strengths. In this study, we investigate a method to substantially reduce these errors by refocusing several gradient echoes and combining the corresponding temperature maps. This echo combination technique eliminates the need for fat suppression in tissues such as the liver.