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PubMed · 15189082

Digital signal processor-based real-time optical Doppler tomography system.

Shikui Yan·Daqing Piao·Yueli Chen·Quing Zhu
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Abstract

We present a real-time data-processing and display unit based on a custom-designed digital signal processor (DSP) module for imaging tissue structure and Doppler blood flow. The DSP module is incorporated into a conventional optical coherence tomography system. We also demonstrate the flexibility of embedding advanced Doppler processing algorithms in the DSP module. Two advanced velocity estimation algorithms previously introduced by us are incorporated in this DSP module. Experiments on Intralipid flow demonstrate that a pulsatile flow of several hundred pulses per minute can be faithfully captured in M-scan mode by this DSP system. In vivo imaging of a rat's abdominal blood flow is also presented.

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AbdomenAlgorithmsAnimalsBlood Flow VelocityEquipment DesignEquipment Failure AnalysisImage EnhancementImage Interpretation, Computer-AssistedLaser-Doppler FlowmetryOnline SystemsPhantoms, ImagingRatsReproducibility of ResultsSensitivity and SpecificitySignal Processing, Computer-AssistedTomography, OpticalUser-Computer InterfaceComparative StudyEvaluation StudyJournal ArticleResearch Support, U.S. Gov't, P.H.S.Validation Study

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Shikui Yan, Daqing Piao, Yueli Chen, Quing Zhu. Digital signal processor-based real-time optical Doppler tomography system.. https://doi.org/10.1117/1.1695409

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