A spread spectrum approach to time-domain near-infrared diffuse optical imaging using inexpensive optical transceiver modules.
A spread spectrum approach to time-domain near-infrared diffuse optical imaging using inexpensive optical transceiver modules.
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DOI：
10.1364/boe.9.002648
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发表时间：
2018-06-01
影响因子：
3.4
通讯作者：
Powell S
中科院分区：
文献类型：
--
作者：
Papadimitriou KI;Dempsey LA;Hebden JC;Arridge SR;Powell S
我们介绍了一个紧凑的时域系统的近红外光谱使用扩频技术。概念验证单通道仪器利用低成本的市售光收发器模块作为光源，由Kintex 7现场可编程门阵列（FPGA）控制。FPGA以高达10 Gb/s的线速率用最大长度序列调制光收发器，使我们能够在600 ps以下实现半高全宽的仪器响应功能。该仪器的特点是通过一组详细的幻影测量以及概念验证的体内测量，证明与传统的脉冲时域近红外光谱系统的性能相当。
We introduce a compact time-domain system for near-infrared spectroscopy using a spread spectrum technique. The proof-of-concept single channel instrument utilises a low-cost commercially available optical transceiver module as a light source, controlled by a Kintex 7 field programmable gate array (FPGA). The FPGA modulates the optical transceiver with maximum-length sequences at line rates up to 10Gb/s, allowing us to achieve an instrument response function with full width at half maximum under 600ps. The instrument is characterised through a set of detailed phantom measurements as well as proof-of-concept in vivo measurements, demonstrating performance comparable with conventional pulsed time-domain near-infrared spectroscopy systems.