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Presented by Timothy Kruser, MD
Northwestern Memorial Hospital
Current protocols for target delineation in the brain utilize T2-FLAIR and post-resection cavity enhancement to guide treatment volumes. Anatomic barriers to spread such as the falx, tentorium, and ventricles are utilized to customize target volumes and therefore intricate knowledge of white matter tracts in the brain are important to understand appropriate customization of target volumes. This session will review these structures and pathways, as well as common mistakes in glioma contouring. In addition, avoidance structures and future directions in brain tumor contouring will be discussed. Preliminary data from four postoperative glioblastoma (GBM) cases in varying locations in the brain that were contoured by ten academic radiation oncologists specializing in brain tumor treatment will be utilized to highlight common mistakes in contouring for glioma radiotherapy. The presentation will focus on practical contouring concerns in the context of current brain tumor protocols. Current literature and protocols will serve the basis for discussions of avoidance organ delineation.
Dr. Kruser is a radiation oncologist at Northwestern Memorial Hospital. He trained at the University of Wisconsin, and now lives in Chicago where he specializes in radiation for lung and brain malignancies.