Institute for Biodiagnostics, National Research Council of Canada, Winnipeg, Manitoba, Canada R3B 1Y6.
Magn Reson Imaging. 2011 Jan;29(1):147-52. doi: 10.1016/j.mri.2010.07.014. Epub 2010 Sep 15.
Here we present a novel pneumatic actuator design for brain magnetic resonance elastography (MRE). Magnetic resonance elastography is a phase contrast technique capable of tracing strain wave propagation and utilizing this information for the calculation of mechanical properties of materials and living tissues. In MRE experiments, the acoustic waves are generated in a synchronized way with respect to image acquisition, using various types of mechanical actuators. The unique feature of the design is its simplicity and flexibility, which allows reconfiguration of the actuator for different applications ranging from in vivo brain MRE to experiments with phantoms. Phantom and in vivo data are presented to demonstrate actuator performance.
在这里，我们提出了一种用于脑磁共振弹性成像（MRE）的新型气动执行器设计。磁共振弹性成像是一种相位对比技术，能够追踪应变波的传播，并利用此信息计算材料和活体组织的机械性能。在 MRE 实验中，使用各种类型的机械致动器以与图像采集同步的方式产生声波。该设计的独特之处在于其简单性和灵活性，允许针对从体内脑 MRE 到与幻影的实验等不同应用重新配置致动器。呈现了幻影和体内数据以证明执行器的性能。
