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Abstract #4735

Accuracy of fat fraction when using IDEAL-IQ with a liver nonspecific extracellular contrast agent

Lesheng Huang1, Hong yi Li1, Jun Chen1, Weiyin Vivian Liu 2, Kai li Cai1, Jing hua Jiang1, Wan chun Zhang1, Jia hui Tang1, Guang jun Tian3, Tao He1, Kai lian Yang1, Meng Hu1, Dong Zhang3, and Dan Li3
1Radiology, Guangdong Hospital of Traditional Chinese Medicine, Zhuhai, Zhu Hai, China, 2MR Research, GE Healthcare, Beijing, China, Beijing, China, 3Hepatology, Guangdong Hospital of Traditional Chinese Medicine, Zhuhai, Zhu Hai, China


To long-term track patients with liver disease is often carried out in clinics. It is also noted that nonspecific contrast agents change the relaxation time of tissue components, but few studies focus on the strong or weak FF alteration reflected by IDEAL-IQ derived measurements acquired before and after the contrast injection. In our study, we discovered significantly altered T1 values and fat fraction but not R2* even after the non-specific contrast agent achieved balanced condition at 3 minutes later of post-injection. Therefore, the liver non-specific contrast agent had an impact on the fat fraction measurements computed by IDEAL-IQ, and the utility of IDEAL-IQ should be performed before the injection of contrast agents to ensure the accuracy of fat fraction.

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