Skip to Main content Skip to Navigation
Journal articles

High speed 1H spectroscopic imaging in human brain by echo planar spatial-spectral encoding.

Abstract : We introduce a fast and robust spatial-spectral encoding method, which enables acquisition of high resolution short echo time (13 ms) proton spectroscopic images from human brain with acquisition times as short as 64 s when using surface coils. The encoding scheme, which was implemented on a clinical 1.5 Tesla whole body scanner, is a modification of an echo-planar spectroscopic imaging method originally proposed by Mansfield Magn. Reson. Med. 1, 370-386 (1984), and utilizes a series of read-out gradients to simultaneously encode spatial and spectral information. Superficial lipid signals are suppressed by a novel double outer volume suppression along the contours of the brain. The spectral resolution and the signal-to-noise per unit time and unit volume from resonances such as N-acetyl aspartate, choline, creatine, and inositol are comparable with those obtained with conventional methods. The short encoding time of this technique enhances the flexibility of in vivo spectroscopic imaging by reducing motion artifacts and allowing acquisition of multiple data sets with different parameter settings.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00350002
Contributor : Denis Le Bihan <>
Submitted on : Monday, January 5, 2009 - 3:59:24 PM
Last modification on : Monday, February 10, 2020 - 6:12:50 PM

Identifiers

  • HAL Id : hal-00350002, version 1
  • PUBMED : 7891533

Collections

Citation

S. Posse, Gilles Tedeschi, R. Risinger, R. Ogg, D. Le Bihan. High speed 1H spectroscopic imaging in human brain by echo planar spatial-spectral encoding.. Magnetic Resonance in Medicine, Wiley, 1995, 33 (1), pp.34-40. ⟨hal-00350002⟩

Share

Metrics

Record views

76