Meyer K L, Kim K, Li T, Tulipano P K, Lee K M, DeLaPaz R, Hirsch J, Ballon D
Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.
Magn Reson Med. 1996 Oct;36(4):606-12. doi: 10.1002/mrm.1910360416.
In this work a 5 x 5 mesh dome resonator that has been optimized for functional brain imaging is presented. The resonator was reduced in length and diameter compared with previous versions to reduce sample losses, thus enhancing the signal-to-noise ratio of the acquired data. In addition, a 5 x 5 mesh design was employed, which offered improved axial homogeneity over an earlier 3 x 3 mesh version. The new resonator exhibited high sensitivity and good homogeneity over the brain volume, permitting analysis of functional activation over large areas of the cerebral cortex. In a direct comparison with a standard clinical head-imaging resonator, the high sensitivity of the 5 x 5 mesh dome resonator resulted in greater statistical confidence in functional activation.
在这项工作中，展示了一种为功能性脑成像而优化的5×5网格圆顶谐振器。与先前版本相比，该谐振器的长度和直径有所减小，以减少样本损失，从而提高采集数据的信噪比。此外，采用了5×5网格设计，与早期的3×3网格版本相比，轴向均匀性得到了改善。新的谐振器在脑容积上表现出高灵敏度和良好的均匀性，允许对大脑皮层的大面积功能激活进行分析。与标准临床头部成像谐振器直接比较时，5×5网格圆顶谐振器的高灵敏度在功能激活方面带来了更高的统计置信度。
