Abstract #4934

A Comparsion Study of Ultrashort Echo Time Quantitative Susceptibility Mapping (UTE-QSM) with Different Sampling Trajectories

Xing Lu^1,2, Hyungseok Jang², Yajun Ma², Wenhui Yang¹, Eric Y Chang³, and Jiang Du²

¹Institute of Electrical Engineering, Chinese Academy of Science, Beijing, China, ²Department of Radiology, University of California, San Diego, San Diego, CA, United States, ³Radiology Service, VA San Diego Healthcare System, San Diego, CA, United States

The ability to accurately and non-invasively quantify IONPs is desirable for many emerging applications, including for the evaluation of iron overload in the human body. 3D UTE Cones has demonstrated ability to detect high iron concentration with shorter echo times. In this study, we aimed to make clear whether the non-Cartesian sampling of Cones trajectory affects the accuracy of QSM. By comparing three different kinds of UTE sampling trajectory, as well as different stretch factors of Cones, the results show that no significant differences between these UTE QSM results were found.

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