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Abstract #1740

3D mTI-ASL perfusion for differentiating 1p/19q status in IDH1-mutant lower grade gliomas

Rui Wang1, Xianchang Zhang2, and Shaowu Li1
1Beijing Neurosurgical Institute/Beijing Tiantan Hospital, Capital Medical University, Beijing, China, 2MR Collaboration, Siemens Healthineers Ltd., Beijing, China

Synopsis

Keywords: Tumors, Arterial spin labelling

This study investigated the feasibility of using local maximum cerebral blood flow (maxCBF) in tumor area measured with multi-inversion-time ASL (mTI-ASL) to preoperatively predict the 1p/19q status in patients with IDH1-mutant lower-grade glioma (LGG). Mann-Whitney U test showed that maxCBF in the tumor region was significantly higher in 1p/19q Non-Codeleted group than Codeleted group. ROC showed maxCBF achieved high sensitivity (0.7) and specificity (0.737) in differentiation of IDH1-mutant-LGGs with distinct 1p/19q status. This finding suggested that ASL-derived maxCBF has the potential as a tool for the noninvasive preoperative characterization of 1p/19q status, thus providing evidence for individualized treatment planning.

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