Scholarlink

<p>Ultra-high-field (≥7T) MRI suffers from poor transmit (B₁⁺) homogeneity, particularly in neuroimaging. This study evaluated paired metasurfaces near the temporal lobes in five healthy volunteers versus dielectric pads and reference scans. Metasurfaces markedly improved SNR across the brain (FLAIR: ~24%, MPRAGE: ~97%) and in the temporal lobes (FLAIR: ~57%, MPRAGE: ~212%), also recovering signal in the cerebellum and neck. Simulations indicated a 23.5% increase in peak SAR compared to reference.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhancement of in vivo 7T magnetic resonance neuroimaging via flexible metasurfaces

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月16日

查看全文
  • Paul S. Jacobs,
  • Neil Wilson,
  • Wyger Brink,
  • John Detre,
  • Mark Elliott,
  • Ravinder Reddy

摘要

Ultra-high-field (≥7T) MRI suffers from poor transmit (B₁⁺) homogeneity, particularly in neuroimaging. This study evaluated paired metasurfaces near the temporal lobes in five healthy volunteers versus dielectric pads and reference scans. Metasurfaces markedly improved SNR across the brain (FLAIR: ~24%, MPRAGE: ~97%) and in the temporal lobes (FLAIR: ~57%, MPRAGE: ~212%), also recovering signal in the cerebellum and neck. Simulations indicated a 23.5% increase in peak SAR compared to reference.