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Abstract #3928

ORBITAL FAT VOLUMETRY AND FAT FRACTION MEASUREMENT USING ITERATIVE DECOMPOSITION OF WATER AND FAT WITH ECHO ASYMMETRY AND LEAST-SQUARES ESTIMATION-FAST SPIN ECHO (IDEAL -FSE)

Keizo Tanitame1, Yuji Takahashi2, Yoko Kaichi3, Akira Naito1, and Kazuo Awai3

1Radiology, Chugoku Rosai Hospital, Kure, Japan, 2Clinical radiology, Hiroshima University Hospital, Hiroshima, Japan, 3Diagnostic Radiology, Hiroshima University Hospital, Hiroshima, Japan

We believe that the quantitative evaluation of orbital fat proliferation and edema is useful for diagnosing and monitoring Graves’ ophthalmopathy. We demonstrate the feasibility of orbital fat volumetry and fat fraction measurement using iterative decomposition of water and fat with echo asymmetry and least-squares estimation-fast spin echo (IDEAL-FSE) and analyze preliminary data from healthy adults.

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