Importance of 3D-TSE imaging for patients with brain metastasis treated with SRS alone

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Abstract

This study evaluates the clinical utility of 3D turbo spin echo (3D-TSE) imaging in stereotactic radiosurgery (SRS) planning for brain metastases, examining the value of adding 3D-TSE to MPRAGE. Dual-sequence MRI (MPRAGE + 3D-TSE) significantly prolonged time to distant intracranial failure (DIF) in whole brain radiotherapy (WBRT)-naïve patients (n = 308, 11.4 vs. 6.8 months, p = 0.03), but not in patients previously treated with WBRT and salvaged with SRS (n = 39, 6.5 vs. 5.6 months, p = 0.76). Additional lesion detection attributed to 3D-TSE imaging was greater in WBRT-naïve (19.6 %) than in post-WBRT patients (12.0 %) (p < 0.001). The dual-sequence imaging may improve time to distant failure in the modern era for most patients treated with primary stereotactic radiosurgery and should be integrated into the SRS workflow.

Original languageEnglish
Pages (from-to)111172
JournalRadiotherapy and Oncology
DOIs
StateE-pub ahead of print - Sep 28 2025

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