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- W4224321897 abstract "We have previously demonstrated a novel interferometric multispeckle Fourier domain diffuse correlation spectroscopy system that makes use of holographic camera-based detection, and which is capable of making in vivo pulsatile flow measurements. In this work, we report on a systematic characterisation of the signal-to-noise ratio performance of our system. This includes demonstration and elimination of laser mode hopping, and correction for the instrument’s modulation transfer function to ensure faithful reconstruction of measured intensity profiles. We also demonstrate a singular value decomposition approach to ensure that spatiotemporally correlated experimental noise sources do not limit optimal signal-to-noise ratio performance. Finally, we present a novel multispeckle denoising algorithm that allows our instrument to achieve a signal-to-noise ratio gain that is equal to the square root of the number of detected speckles, whilst detecting up to ∼1290 speckles in parallel. The signal-to-noise ratio gain of 36 that we report is a significant step toward mitigating the trade-off that exists between signal-to-noise ratio and imaging depth in diffuse correlation spectroscopy." @default.
- W4224321897 created "2022-04-26" @default.
- W4224321897 creator A5003524485 @default.
- W4224321897 creator A5023458515 @default.
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- W4224321897 date "2022-06-09" @default.
- W4224321897 modified "2023-10-15" @default.
- W4224321897 title "Performance optimisation of a holographic Fourier domain diffuse correlation spectroscopy instrument" @default.
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- W4224321897 doi "https://doi.org/10.1364/boe.454346" @default.
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