Interrater Reliability Assessment of the Brain Tumor Reporting and Data System (BT-RADS)

M RI is essential for the evaluation of treatment response in patients with primary brain tumors.Differentiating between tumor progression and treatment-related changes at follow-up MRI remains challenging due to overlapping imaging features.The BT-RADS structured reporting system (score, 0-4) was developed to reduce subjectivity among radiologists.BT-RADS incorporates previous treatment course and provides an appropriate management recommendation.This retrospective study by Essien et al included 103 MRI studies in 98 adult patients treated for primary brain tumors.Images were obtained with and without intravenous contrast material according to a standardized brain MRI protocol.Six blinded readers (four neuroradiologists