In vivo magnetic resonance vascular imaging using laser-polarized 3He microbubbles.

Published

Journal Article

Laser-polarized gases (3He and 129Xe) are currently being used in magnetic resonance imaging as strong signal sources that can be safely introduced into the lung. Recently, researchers have been investigating other tissues using 129Xe. These studies use xenon dissolved in a carrier such as lipid vesicles or blood. Since helium is much less soluble than xenon in these materials, 3He has been used exclusively for imaging air spaces. However, considering that the signal of 3He is more than 10 times greater than that of 129Xe for presently attainable polarization levels, this work has focused on generating a method to introduce 3He into the vascular system. We addressed the low solubility issue by producing suspensions of 3He microbubbles. Here, we provide the first vascular images obtained with laser-polarized 3He. The potential increase in signal and absence of background should allow this technique to produce high-resolution angiographic images. In addition, quantitative measurements of blood flow velocity and tissue perfusion will be feasible.

Full Text

Duke Authors

Cited Authors

  • Chawla, MS; Chen, XJ; Möller, HE; Cofer, GP; Wheeler, CT; Hedlund, LW; Johnson, GA

Published Date

  • September 1, 1998

Published In

Volume / Issue

  • 95 / 18

Start / End Page

  • 10832 - 10835

PubMed ID

  • 9724790

Pubmed Central ID

  • 9724790

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.95.18.10832

Language

  • eng

Conference Location

  • United States