Abstract #4821

Pseudo-fat in the fetal liver with two-point Dixon water-fat separation

Stephanie A Giza¹, Barbra de Vrijer^2,3, and Charles A McKenzie^1,3

¹Medical Biophysics, The University of Western Ontario, London, ON, Canada, ²Obstetrics and Gynaecology, The University of Western Ontario, London, ON, Canada, ³Division of Maternal, Fetal and Newborn Health, Children's Health Research Institute, London, ON, Canada

2-point Dixon water-fat imaging is a widely available sequence that can be used to generate fat images. Increased fat was seen in the livers of a 35+4 week anencephalic fetus and a 37 week normal fetus on 2-point Dixon images, but not with IDEAL water-fat imaging. When applied to the fetus late in gestation, caution should be taken as a shortened fetal liver T2* may appear as false liver fat. IDEAL water-fat imaging corrects for changes in T2* and is a more appropriate sequence for fetal water-fat separated imaging in the third trimester.

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