O'Reilly T P A, Webb A G, Brink W M
C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands.
C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands.
J Magn Reson. 2016 Sep;270:108-114. doi: 10.1016/j.jmr.2016.07.003. Epub 2016 Jul 9.
Improvements are proposed for practical design and use of high permittivity materials in high field neuroimaging in three different areas: (i) a simple formula to predict the permittivity of tri-component aqueous-based perovskite suspensions with relative permittivities between 110 and 300, (ii) characterization of addition of a hydroxyethyl-cellulose gelling agent to improve the long-term stability and material properties of "dielectric pads", and (iii) investigation of the integration of, for example, headphones into the dielectric pads to increase patient comfort within tightly-fitting receive coil arrays.
针对高介电常数材料在高场神经成像中的实际设计和应用，提出了三个不同方面的改进：（i）一个简单公式，用于预测相对介电常数在110至300之间的三元水基钙钛矿悬浮液的介电常数；（ii）添加羟乙基纤维素胶凝剂以改善“介电垫”的长期稳定性和材料性能的表征；（iii）研究例如将耳机集成到介电垫中，以提高患者在紧密贴合的接收线圈阵列中的舒适度。
