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Abstract #3648

Diffusion Time Dependence of Diffusion Tensor Parameters in the Evaluation of Meningioma Subtype: a Preliminary Study

Tomoko Maekawa1,2, Masaaki Hori1, Katsutoshi Murata3, Christina Andica1, Yutaka Ikenouchi1, Shohei Fujita1, Ryusuke Irie1,2, Akifumi Hagiwara1,2, Kamiya Kouhei1,2, Koji Kamagata1, Akihiko Wada1, and Shigeki Aoki1

1Radiology, Juntendo University Hospital, Tokyo, Japan, 2Radiology, The University of Tokyo Hospital, Tokyo, Japan, 3Siemens Healthcare Japan KK, Tokyo, Japan

We investigated the DTI eigenvalues and MD of five types of meningioma acquired with a shorter diffusion time using an OGSE sequence. Eleven meningiomas that consisted of 4 meningothelial meningiomas, 2 fibrous meningiomas, 2 transitional meningiomas, 1 psammomatous meningioma, and 2 atypical meningiomas were analyzed. Our results showed that the psammomatous and atypical meningiomas had a relatively strong diffusion time-dependence of diffusion tensor metrics. The use of shorter diffusion time with DTI provide additional information about the microstructure of each meningioma subtypes.

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