Repeated stereotactic radiosurgery for high grade meningioma.

Background And Objectives: Atypical and anaplastic meningioma (World Health organization [WHO] Grades II and III) present therapeutic challenges due to their aggressive behavior and high risk of recurrence. This study addressed the lack of data related to the effectiveness and safety of repeated stereotactic radiosurgery (SRS) in managing high-grade recurrent or residual meningioma.

Methods: This study analyzed data extracted from the medical records of 112 patients (mean age of 57.

Repeated stereotactic radiosurgery for residual intracranial dural arteriovenous fistulas.

Objective: Stereotactic radiosurgery (SRS) is widely used for the treatment of intracranial dural arteriovenous fistulas (DAVFs); however, the outcomes of repeated SRS to deal with residual DAVFs are unclear. This study assessed the benefits and potential negative consequences of repeated SRS in patients with residual DAVFs.

Methods: This retrospective study examined all patients who underwent two SRS procedures for DAVFs in a single academic medical center between January 1998 and December 2022.

Deep learning for automated segmentation of brain edema in meningioma after radiosurgery.

Background: Although gamma Knife radiosurgery (GKRS) is commonly used to treat benign brain tumors, such as meningioma, irradiating the surrounding brain tissue can lead to perifocal edema within a few months after the procedure. Volumetric assessment of perifocal edema is crucial for therapy planning and monitoring. Post-radiosurgery changes in perifocal edema, appearing as hyper-dense areas in magnetic resonance T2-weighted (T2w) images, are clearly identifiable; however, physicians lack tools to segment and quantify the volume of these T2w hyper-dense areas.

Stereotactic radiosurgery for anterior cranial fossa dural arteriovenous fistulas.

Objective: Anterior cranial fossa (ACF) dural arteriovenous fistulas (DAVFs) are notoriously malignant vascular abnormalities, and their drainage into the cortical vein poses a high risk of intracranial hemorrhage (ICH). Stereotactic radiosurgery (SRS) is increasingly seen as an alternative to microsurgery or embolization for the treatment of DAVFs; however, researchers have yet to report on its applicability to ACF DAVFs. This paper summarizes the authors' experience in the use of SRS for ACF DAVFs.