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优化流量补偿用于对比度增强的T1加权波-CAIPI 3D MPRAGE脑部成像
Azadeh Tabari1,2, Min Lang3,4, Komal Awan3,4
1Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, 55 Fruit Street, Charlestown, Boston, MA, 02114, USA. atabari@mgh.harvard.edu.
European radiology experimental
|July 2, 2023
概括
一种新的流量缓解技术显著减少了加速MRI扫描中的文物,提高了诊断准确度,而不会影响图像质量. 这种优化的协议提高了T1加权对比增强成像的清晰度.
科学领域:
- 磁共振成像 (MRI) 是一种磁共振成像技术.
- 医学成像物理 医学成像物理
- 放射学 放射学是一门学科.
背景情况:
- 像Wave-CAIPI MPRAGE这样的加速MRI技术提供更快的扫描时间.
- 在这些加速序列中,可能会出现流动相关的工件,可能会模仿病理并导致诊断不确定性.
- 现有的协议可能无法充分解决这些流体工件.
研究的目的:
- 开发和评估一个优化的流量缓解波-CAIPI MPRAGE采集协议.
- 为了减少T1加权对比增强MRI的流动相关的工件.
- 维护或改进诊断图像质量指标.
主要方法:
- 使用流量补偿梯度和辐射重排序k空间获取的流量减轻协议的开发.
- 在一个定制的流量幻影中进行测试,以进行文物评估.
- 在64名成年患者的临床评估中,比较了标准与优化的流量减轻序列.
主要成果:
- 优化的协议在89-94%的案例中减少了流动相关的工件.
- 信号与噪声比,灰白质对比度,增强损伤对比度和图像清晰度在标准和流量减轻序列之间是相当的.
- 流量缓解成功地减少了模仿增强病变的工件.
结论:
- 优化的流量缓解协议有效地减少了Wave-CAIPI MPRAGE中的流量相关的工件.
- 诊断图像质量和关键指标通过流量减轻技术得到保护.
- 这种技术通过将人工制造物诱导的不确定性降到最低,提高了加速MRI的诊断信心.
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