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Abstract #4796

Assessment of the cerebral blood flow for brain metastasis after radiotherapy using 3D arterial spin labeling MRI

Chuanke Hou1, Guanzhong Gong1, Weiqiang Dou2, Weiyin Vivian Liu2, and Yong Yin1
1Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China, Jinan, China, 2GE Healthcare, MR Research China, Beijing, China

In the study, the relationship between three brain regions (brain metastasis, normal brain region and perituberous edema region) and radiotherapy dose gradient has been explored. 3D arterial spin labeling perfusion imaging (3D-ASL) for quantitative cerebral blood flow measurement has been used in the clinical diagnosis, preoperative differentiation and grading of brain tumors. Therefore, individualized radiotherapy for BM patients could be optimized and improve the local control rate of BM.

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