Shot-noise detection of ultrasound-tagged photons in ultrasound-modulated optical imaging

TL;DR

This paper introduces a novel CCD-based detection technique for ultrasound-modulated optical tomography that achieves shot-noise-limited sensitivity and effectively filters speckle decorrelation noise, enhancing imaging quality.

Contribution

The authors develop a parallel speckle detection method using a CCD camera with a spatial filter system to improve sensitivity and noise filtering in ultrasound-modulated optical imaging.

Findings

Achieved shot-noise-limited detection sensitivity.

Successfully filtered out speckle decorrelation noise.

Validated method through experimental testing.

Abstract

We propose a new detection method for ultrasound-modulated optical tomography that allows us to perform parallel speckle detection with optimum shot-noise sensitivity, using a CCD camera. Moreover, we show that making use of a spatial filter system allows us to fully filter out speckle decorrelation noise. This method is confirmed by a test experiment