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Gallium‐68 DOTATATE PET in the Evaluation of Intracranial Meningiomas

Meningiomas are the most common primary intracranial tumors, typically treated with surgery and adjuvant radiation in cases of subtotal resection and/or higher histopathologic grade. Contrast‐enhanced magnetic resonance imaging (MRI) is the gold standard for postoperative assessment and adjuvant treatment planning. However, MRI can have limited accuracy particularly in the presence of posttreatment change. [68Ga]‐DOTATATE is a Positron Emission Tomography (PET) radiotracer targeting somatostatin receptor 2A (SSTR2A). SSTR2A is a reliable biomarker of meningiomas. We report a consecutive case series of 20 patients evaluated with [68Ga]‐DOTATATE PET/MRI, propose a novel approach to quantitative analysis, and discuss clinical implications.