CONTRAST IN VARIABLE FLIP ANGLE FAST MR IMAGING.

S. Vinitski, M. Z. Fuka, John M Boone, A. D'Adamo, M. D. Rifkin, R. H. Griffey, J. D. Wicks, W. W. Orrison, N. A. Matwiyoff

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Signal intensity in magnetic resonance imaging (MRI) is described by the solution to the Bloch equations. Image behavior is calculated for the variable-angle gradient refocusing and conventional spin-echo techniques. It is found that by proper manipulation of the excitation angle (and echo time in spin-echo sequences), the imaging time can be reduced up to twentyfold for the gradient refocusing technique and fourfold for the conventional spin-echo imaging. The contrast obtained is comparable to that acquired in conventional MRI. Imaging experiments performed on phantoms and human heads are in good agreement with theoretical results.

Original languageEnglish (US)
Pages (from-to)1110-1115
Number of pages6
JournalIEEE Transactions on Nuclear Science
VolumeNS-34
Issue number5
StatePublished - 1800
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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    Vinitski, S., Fuka, M. Z., Boone, J. M., D'Adamo, A., Rifkin, M. D., Griffey, R. H., Wicks, J. D., Orrison, W. W., & Matwiyoff, N. A. (1800). CONTRAST IN VARIABLE FLIP ANGLE FAST MR IMAGING. IEEE Transactions on Nuclear Science, NS-34(5), 1110-1115.