Abstract #4652

Does the Measurement of Liver and Vertebral Fat Content Influenced by R2* Effect in T2*-IDEAL: A Comparison Study with 3-Point IDEAL and MRS in Healthy Volunteers

Chun-Jung Juan¹, Hing-Chiu Chang^2,3, Chih-Yung Yu¹, Chang-Hsien Liou¹, Cheng-Yu Chen¹, Chun-Jen Hsueh¹, Hung-Wen Kao¹, Chih-Wei Wang¹, Hsiao-Wen Chung^1,3, Guo-Shu Huang¹

¹Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan; ²Applied Science Laboratory, GE Healthcare Taiwan, Taipei, Taiwan; ³Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan

By simultaneous acquisition of all echoes in one TR interval, T2* IDEAL is superior to 3-pt IDEAL by allowing either larger spatial coverage or higher resolution. Whether the fat content measured by the T2* IDEAL method is influenced by the R2* effect of tissue or not is an important concern but remains ambiguous. In this study, we verify the fat content measurements of liver (lower R2* value) and vertebra (higher R2* value) in both methods compared to the MRS method. Our results show no statistical difference of liver and vertebral fat content in T2* IDEAL and 3-pt IDEAL methods.