MR imaging of diffusion of 3He gas in healthy and diseased lungs

Brian T. Saam, Dmitriy A. Yablonskiy, Vikram Kodibagkar, Jason C. Leawoods, David S. Gierada, Joel D. Cooper, Stephen S. Lefrak, Mark S. Conradi

Research output: Contribution to journalArticle

261 Citations (Scopus)

Abstract

Hyperpolarized He gas MRI was used to form maps of the effective diffusivity of gas in human lungs, images of diffusion as well as spin density are presented from a study of 11 healthy volunteers and 5 patients with severe emphysema. The effective rate of diffusion, D(e), of the gas is reduced by the alveolar walls; tissue destruction in emphysema is hypothesized to result in larger D(e). Indeed, the mean value of Do in the emphysematous lungs is found here to be about 2.5 times that of healthy lungs, although still smaller than the unrestricted diffusivity of He in free air. Histograms of D(e) values across coronal slices are presented. The results are discussed in terms of spatial variations, variations among individuals, healthy and diseased, and variations due to changes in lung volume. 174-179 (C) 2000 Wiley-Liss, Inc.

Original languageEnglish (US)
Pages (from-to)174-179
Number of pages6
JournalMagnetic Resonance in Medicine
Volume44
Issue number2
DOIs
StatePublished - 2000
Externally publishedYes

Fingerprint

Lung Diseases
Gases
Lung
Emphysema
Healthy Volunteers
Air

Keywords

  • He
  • Diffusion
  • Gas
  • Hyperpolarized gas
  • Lungs

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Saam, B. T., Yablonskiy, D. A., Kodibagkar, V., Leawoods, J. C., Gierada, D. S., Cooper, J. D., ... Conradi, M. S. (2000). MR imaging of diffusion of 3He gas in healthy and diseased lungs. Magnetic Resonance in Medicine, 44(2), 174-179. https://doi.org/10.1002/1522-2594(200008)44:2<174::AID-MRM2>3.0.CO;2-4

MR imaging of diffusion of 3He gas in healthy and diseased lungs. / Saam, Brian T.; Yablonskiy, Dmitriy A.; Kodibagkar, Vikram; Leawoods, Jason C.; Gierada, David S.; Cooper, Joel D.; Lefrak, Stephen S.; Conradi, Mark S.

In: Magnetic Resonance in Medicine, Vol. 44, No. 2, 2000, p. 174-179.

Research output: Contribution to journalArticle

Saam, BT, Yablonskiy, DA, Kodibagkar, V, Leawoods, JC, Gierada, DS, Cooper, JD, Lefrak, SS & Conradi, MS 2000, 'MR imaging of diffusion of 3He gas in healthy and diseased lungs', Magnetic Resonance in Medicine, vol. 44, no. 2, pp. 174-179. https://doi.org/10.1002/1522-2594(200008)44:2<174::AID-MRM2>3.0.CO;2-4
Saam, Brian T. ; Yablonskiy, Dmitriy A. ; Kodibagkar, Vikram ; Leawoods, Jason C. ; Gierada, David S. ; Cooper, Joel D. ; Lefrak, Stephen S. ; Conradi, Mark S. / MR imaging of diffusion of 3He gas in healthy and diseased lungs. In: Magnetic Resonance in Medicine. 2000 ; Vol. 44, No. 2. pp. 174-179.
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