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10通道分相阵列线圈用于在3T时的喉壁MRI
Matthijs H S de Buck1, Peter Jezzard1, Robert Frost1,2,3
1Wellcome Centre for Integrative Neuroimaging, FMRIB Division, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom.
PloS one
|August 9, 2023
概括
一个新的10通道MRI线圈通过增加信号与噪音比率和对比度与噪音比率来改善状动脉分叉成像,通过更好的斑块可视化帮助预防和治疗中风.
科学领域:
- 医疗成像医学成像
- 生物医学工程 生物医学工程
- 放射学 放射学是一门学科.
背景情况:
- 准确评估带分叉斑块对于预防和治疗中风至关重要.
- 磁力共振成像斑块划分受到低对比度和噪声比率 (CNR) 和长时间的采集时间的限制.
- 提出了一种新型的10通道阶段式阵列接收线圈,用于3TMRI的双侧动脉分叉成像.
研究的目的:
- 为了评估新型10通道MRI接收线圈与商用4通道线圈的性能.
- 评估信号与噪声比 (SNR),CNR和g因素噪声放大方面的改进.
- 为了证明线圈在患者数据中可视化动脉样硬化斑块的有效性.
主要方法:
- 使用幻影和志愿者数据 (N=9) 将10通道线圈与4通道线圈进行比较.
- 评估SNR,噪声相关性,g因子和血管壁/光膜CNR与黑血序列.
- 获取12名患有动脉样硬化性动脉疾病的患者数据.
主要成果:
- 10通道线圈显示,幻影的SNR显著增加 (+77 ± 27%) 和健康的动脉的CNR改善 (+62 ± 11%).
- 在使用10通道线圈时,观察到g因子噪声放大率降低.
- 在患者数据中实现了出色的动脉样硬化斑块划分.
结论:
- 10通道线圈设计增强了动脉和分叉的可视化.
- 与4通道线圈相比,新的线圈可以增加并行成像加速因子.
- 这种改进的成像能力有助于评估和管理动脉疾病.
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