Multi-spectral photo-acoustic molecular tomography resolves fluorochrome distribution with high resolution and sensitivity in small animals

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Current non-invasive imaging methods of fluorescent molecular probes in the visible and near-infrared suffer from low spatial resolution as a result of rapid light diffusion in biological tissues. We show that three-dimensional distribution of fluorochromes deep in small animals can be resolved with below 25 femtomole sensitivity and 150 microns spatial resolution by means of multi-spectral photoacoustic molecular tomography. The low sensitivity limit of the method is enabled by using the highly resonant absorption spectrum of a commonly used near-infrared fluorescent molecular probe Alexa Fluor® 750 in order to acquire differential images at multiple wavelengths with tomographic topology suitable for whole-body small animal imaging.

Original languageEnglish
Title of host publicationPhotons Plus Ultrasound
Subtitle of host publicationImaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics
DOIs
StatePublished - 2008
Event9th Conference on Photons Plus Ultrasound: Imaging and Sensing 2008 - San Jose, CA, United States
Duration: 20 Jan 200823 Jan 2008

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6856
ISSN (Print)1605-7422

Conference

Conference9th Conference on Photons Plus Ultrasound: Imaging and Sensing 2008
Country/TerritoryUnited States
CitySan Jose, CA
Period20/01/0823/01/08

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