Photoacoustic tomography of a nanoshell contrast agent in the in vivo rat brain

Yiwen Wang, Xueyi Xie, Xueding Wang, Geng Ku, Kelly L. Gill, D. Patrick O'Neal, George Stoica, Lihong V. Wang

Research output: Contribution to journalArticlepeer-review

437 Scopus citations

Abstract

This study demonstrates the feasibility of using nanoshells in vivo as a new contrast-enhancing agent for photoacoustic tomography. Deep penetrating near-infrared light was employed to image the in vivo distribution of poly(ethylene glycol)-coated nanoshells circulating in the vasculature of a rat brain. The images, captured after three sequential administrations of nanoshells, present a gradual enhancement of the optical absorption in the brain vessels by up to 63%. Subsequent clearance of the nanoshells from the blood was imaged for ∼6 h after the administrations.

Original languageEnglish (US)
Pages (from-to)1689-1692
Number of pages4
JournalNano Letters
Volume4
Issue number9
DOIs
StatePublished - Sep 2004

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering

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