Multiple echo frequency-domain image contrast: Improved signal-to-noise ratio and T2/(T2/*) weighting

Q. X. Yang, R. J. Demeure, B. J. Dardzinski, B. W. Arnold, M. B. Smith

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Conventional T2- and T2/*-weighted image contrasts are produced by waiting a TE period for the transverse magnetic resonance (MR) signals to decay to differentiate tissue types with distinct relaxation rates. Significant image signal-to-noise ratio (SNR) is compromised by this contrast-producing process. In this report, a multiple echo frequency-domain image contrast (MEFIC) method is presented. During the conventional TE period, a multiple echo train modulated by T2 or T2/* decay is acquired. A third Fourier transform along the echo direction produces an image set with pixel signal intensity modulated by the spectrum of the decay curve. This method simultaneously enhances image contrast with a large increase in SNR. Experimental studies of cerebral vasogenic edema in immature rats and functional MR imaging studies of the human motor cortex have demonstrated that the MEFIC method produces superior image quality over conventional methods for generating T2- and T2/* weighted images.

Original languageEnglish (US)
Pages (from-to)423-428
Number of pages6
JournalMagnetic Resonance in Medicine
Volume41
Issue number2
DOIs
StatePublished - Jan 1 1999

Fingerprint

Signal-To-Noise Ratio
Brain Edema
Motor Cortex
Fourier Analysis
Magnetic Resonance Spectroscopy
Magnetic Resonance Imaging

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Yang, Q. X. ; Demeure, R. J. ; Dardzinski, B. J. ; Arnold, B. W. ; Smith, M. B. / Multiple echo frequency-domain image contrast : Improved signal-to-noise ratio and T2/(T2/*) weighting. In: Magnetic Resonance in Medicine. 1999 ; Vol. 41, No. 2. pp. 423-428.
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Multiple echo frequency-domain image contrast : Improved signal-to-noise ratio and T2/(T2/*) weighting. / Yang, Q. X.; Demeure, R. J.; Dardzinski, B. J.; Arnold, B. W.; Smith, M. B.

In: Magnetic Resonance in Medicine, Vol. 41, No. 2, 01.01.1999, p. 423-428.

Research output: Contribution to journalArticle

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