Abstract #3824

k-space MR Thermometry Using k-space Energy Spectrum Analysis

Shenyan Zong¹, Bruno Madore², Guofeng Shen³, and Chang-Sheng Mei⁴

¹Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China, ²Department of Radiology, Brigham and Women's Hospital, Boston, MA, United States, ³Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China, ⁴Department of Physics, Soochow University, Taipei, Taiwan

The goal of this work was to perform MR thermometry in the k-space domain, as opposed to the image domain, on the premise that a k-space approach might be better suited at capturing spatial trends. The method relies on the fact that spatial gradients in temperature cause k-space shifts in signals for heated materials. Traditional proton resonance frequency (PRF) thermometry was also performed, for validation purposes.

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