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Abstract #2615

Optimizing diffusion-weighted imaging of thyroid gland using dedicated surface coil

Yunfei Wang1, Chaofan Zhu1, Dehong Luo1, Long Qian2, Yayuan Geng3, Wenming Deng1, and Zhou Liu1
1Radiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospi, Shenzhen, China, 2MR Research, GE Healthcare, Beijing, China, 3Huiying Medical Technology Co., Ltd., Beijing, China

It is challenging to perform diffusion-weighted imaging (DWI) on thyroid gland with high quality due to susceptibility artifacts caused by complex structure compositions, and physiological motion artifacts and low signal-to-noise ratio (SNR) using conventional head and neck joint coil. We used a histogram-based approach to evaluate the images of the small field-of-view (FOV) DWI (Focus, GE) and DWI with short-tau inversion-recovery (STIR) fat suppression using a state-of-the-art surface-coil specifically designed for thyroid gland. We found significantly different level and considerably inhomogeneity in signal intensity between right and left lobe of thyroid gland and between two DWIs.

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