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Abstract #2519

Comparison of non-Gaussian diffusion parameters using different diffusion times in head and neck tumors

Mami Iima1,2, Akira Yamamoto1, Ichiro Tateya3, Morimasa Kitamura3, Atsushi Suehiro3, Yo Kishimoto3, and Kaori Togashi1

1Department of Diagnostic Imaging and Nuclear Medicine, Graduate Schoolof Medicine, Kyoto University, Kyoto, Japan, 2Hakubi Center for Advaned Research, Kyoto University, Kyoto, Japan, 3Department of Otolaryngology, Head and Neck Surgery., Graduate School of Medicine, Kyoto University, Kyoto, Japan

The association of diffusion parameters in patients with head and neck cancers was investigated using the different diffusion times. Although ADCo significantly decreased (p<0.05) and fIVIM increased (p<0.05) using 51ms compared to 19.1ms, there was no difference of K values. The effects of the diffusion time on IVIM and non-Gaussian diffusion parameters are not clear in head and neck cancers. Our preliminary study requires further validation with shorter diffusion time or better SNR.

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