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Abstract #3508

The optimal b value study of endogenous water molecule diffusion imaging in the diagnosis of brain tumors

Fen Xing1 and Guangyao Wu2

1RenMin hospital of Wuhan University, Wuhan, China, 2Zhongnan Hospital of Wuhan University, Wuhan, China

In this study, thirty-six cases of meningioma were divided into benign and malignant meningioma. ADC values fitted by 11 b values and any pairs of two b values were used to distinguish between benign and malignant meningioma. We found that, the ADC values of benign, malignant, and all meningiomas showed a decreasing trend with the increase of b value, and the smaller the b value, the greater the decrease. when the b value was ≥ 200 s/mm2, any combinations of b values could discriminate between benign and malignant meningioma. The ADC values obtained by fitting b = 700 and b = 1000 s/mm2 had the highest AUC value.

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