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Related Experiment Video

Updated: Jul 9, 2026

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy

Published on: January 9, 2017

Dynamic light scattering spectroscopy and the Centiloid scale.

Jeffrey N Weiss¹, Daryl Eber², Rebel Cole³

¹Parkland, FL, USA.

Journal of Alzheimer'S Disease : JAD

|July 8, 2026

Summary

This summary is machine-generated.

Dynamic light scattering (DLS) measures particle movement and shows promise for amyloid imaging. This noninvasive technique correlated significantly with positron emission tomography amyloid imaging Centiloid values in fifteen patients.

Keywords:

Alzheimer's disease Centiloid PET amyloid biomarker dementia dynamic light scattering eye spectroscopy

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Area of Science:

Biophysics
Neurology
Medical Imaging

Background:

Alzheimer's disease diagnosis relies on accurate amyloid-beta plaque detection.
Positron emission tomography (PET) amyloid imaging is a current standard but is invasive and costly.
There is a need for noninvasive, cost-effective methods for amyloid assessment.

Purpose of the Study:

To evaluate the utility of Dynamic Light Scattering (DLS) spectroscopy as a noninvasive method for assessing amyloid burden.
To investigate the correlation between DLS measurements and established Centiloid values from PET amyloid imaging.

Main Methods:

Fifteen patients underwent both DLS spectroscopy and PET amyloid imaging.
DLS spectroscopy was used to measure the Brownian motion of particles in vivo.
Centiloid values were obtained from PET imaging for comparison.

Main Results:

DLS measurements demonstrated a significant correlation with Centiloid values.
The DLS technique proved to be noninvasive, quantitative, and inexpensive.
Immediate results were obtained from the DLS measurements.

Conclusions:

Dynamic Light Scattering (DLS) spectroscopy is a promising noninvasive tool for amyloid assessment.
DLS offers a cost-effective and rapid alternative or adjunct to PET imaging for amyloid detection.
Further research is warranted to validate DLS in larger cohorts for clinical application.