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Abstract #1095

Differentiation Between Active Tumor and Radiation Necrosis in Patients with Glioblastoma Based on Model Free DCE Analysis

Idan Bressler1,2, Dafna Ben Bashat1,3,4, Orna Aizenstein3,5, Dror Limon3,6, Felix Bokestein3,7, Deborah T. Blumenthal3,7, Uri Nevo2,4, and Moran Artzi1,3,4
1Sagol Brain Institute, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel, 2The Iby and Aladar Fleischman Faculty of Engineering Tel Aviv University, Tel Aviv, Israel, 3Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel, 4Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel, 5Division of Radiology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel, 6Division of Oncology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel, 7Neuro-Oncology Service, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel

A DCE based method for differentiation between active tumor tissue and radiation necrosis in patients with Glioblastoma is proposed. The study included 31 MRI scans of patients with Glioblastoma (6 patients with 4 longitudinal scans and 7 scans with biopsy results). The system is comprised of automatic, feature based discrimination of DCE dynamic data based on population analysis. Differentiation results show correlation to theoretical DCE models, and agreement with biopsy results in in the majority of cases. RANO based assessment of the differentiated results demonstrate potential for early detection of tumor progression.

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