中国激光, 2019, 46 (1): 0107001, 网络出版: 2019-01-27
基于锁相光子计数的多通道脑功能成像系统 下载: 749次
Multi-Channel Brain Functional Imaging System Based on Lock-in Photon Counting
图 & 表
图 2. (a)数字锁相解调器的结构;(b)方波式锁相的相鉴特性
Fig. 2. (a) Structure of digital lock-in demodulator; (b) phase characteristics of lock-in in square mode
图 3. 锁相光子计数硬件逻辑实现结构图
Fig. 3. Structural diagram of lock-in photon counting hardware logic implementation
图 6. 不同频率间隔下通道间的串扰度。(a) 50 Hz频率间隔;(b) 200 Hz频率间隔;(c) 252 Hz频率间隔
Fig. 6. Crosstalk ratio between channels at different frequency spaces. (a) Frequency space of 50 Hz; (b) frequency space of 200 Hz; (c) frequency space of 252 Hz
图 7. 实验用固态仿体示意图。(a)立体结构;(b)俯视图
Fig. 7. Schematics of solid-state phantom in experiment. (a) Three-dimensional structure; (b) top view
表 1系统的峰值信噪比
Table1. Peak signal to noise ratio of the system
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表 2液态仿体的光学参数
Table2. Optical parameters of liquid phantom
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丁雪梅, 王兵元, 刘东远, 张耀, 潘甜甜, 高峰. 基于锁相光子计数的多通道脑功能成像系统[J]. 中国激光, 2019, 46(1): 0107001. Ding Xuemei, Wang Bingyuan, Liu Dongyuan, Zhang Yao, Pan Tiantian, Gao Feng. Multi-Channel Brain Functional Imaging System Based on Lock-in Photon Counting[J]. Chinese Journal of Lasers, 2019, 46(1): 0107001.