Photoacoustic microscopy using Evans Blue dye as a contrast agent


Conference Paper

Complete and continuous imaging of microvascular networks is crucial for a wide variety of biomedical applications. Photoacoustic tomography can provide high resolution microvascular imaging using hemoglobin within red blood cells (RBC) as an endogenous contrast agent. However, intermittent RBC flow in capillaries results in discontinuous and fragmentary capillary images. To overcome this problem, we used Evans Blue (EB) dye as a contrast agent for in vivo photoacoustic imaging. EB has strong optical absorption at 610 nm and distributes uniformly in the blood stream by chemically binding to albumin. By intravenous injection of EB (6%, 200 μL), complete and continuous microvascular networks-especially capillaries-of the ears of nude mice were imaged. The diffusion of EB (3%, 100 μL) leaving the blood stream was monitored for 2 hours. At lower administration dose of EB (3%, 50 μL), the clearance of the EB-albumin complex was imaged for 10 days and quantitatively investigated using a two-compartment model. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Full Text

Duke Authors

Cited Authors

  • Yao, J; Maslov, KI; Hu, S; Wang, LV

Published Date

  • May 3, 2010

Published In

Volume / Issue

  • 7564 /

International Standard Serial Number (ISSN)

  • 1605-7422

International Standard Book Number 13 (ISBN-13)

  • 9780819479600

Digital Object Identifier (DOI)

  • 10.1117/12.840684

Citation Source

  • Scopus