Human lung air spaces: potential for MR imaging with hyperpolarized He-3.

Published

Journal Article

Two healthy volunteers who had inhaled approximately 0.75 L of laser-polarized helium-3 gas underwent magnetic resonance imaging at 1.5 T with fast gradient-echo pulse sequences and small flip angles ( < 10 degrees). Thick-section (20 mm) coronal images, time-course data (30 images collected every 1.8 seconds), and thin-section (6 mm) images were acquired. Subjects were able to breathe the gas (12% polarization) without difficulty. Thick-section images were of good quality and had a signal-to-noise ratio (S/N) of 32:1 near the surface coil and 16:1 farther away. The time images showed regional differences, which indicated potential value for quantitation. High-resolution images showed greater detail and a S/N of approximately 6:1.

Full Text

Duke Authors

Cited Authors

  • MacFall, JR; Charles, HC; Black, RD; Middleton, H; Swartz, JC; Saam, B; Driehuys, B; Erickson, C; Happer, W; Cates, GD; Johnson, GA; Ravin, CE

Published Date

  • August 1996

Published In

Volume / Issue

  • 200 / 2

Start / End Page

  • 553 - 558

PubMed ID

  • 8685356

Pubmed Central ID

  • 8685356

International Standard Serial Number (ISSN)

  • 0033-8419

Digital Object Identifier (DOI)

  • 10.1148/radiology.200.2.8685356

Language

  • eng

Conference Location

  • United States