Value of intraoperative ultrasound (IOUS) in radiated gliomas

Purpose: Aim of this study was to investigate whether: IOUS is capable to lead to the tumor as seen in the preoperative MRI image. IOUS can distinguish between a tumor margin and the surrounding tissue, both in the special situation of a previously radiated glioma. Material and methods: 15 Patients suffering from a high-grade-glioma which was already treated by operation, radiotherapy and, in most, chemotherapy, were enrolled in the study. Intraoperative ultrasound was used throughout the whole operation. During the operation, two histopathologic samples were obtained: The first was unequivocal tumor tissue (acc…