Reference Values for Long Echo Time MR Spectroscopy in Healthy Adults
Yair Safriela,
MarlyAnne Pol-Rodrigueza,
Edward J. Novotnyb,
Douglas L. Rothmanc and
Robert K. Fulbrighta
a Neuroradiology Section, Department of Radiology, Yale University School of Medicine, New Haven, CT
b Department of Neurology, Yale University School of Medicine, New Haven, CT
c Department of Radiology and Biomedical Engineering, Yale University School of Medicine, New Haven, CT

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FIG 1. Single voxel PRESS proton MR spectra (TR/TE = 2000/135) demonstrate choline (Ch), creatine (Cr), and N-acetylaspartate (NAA) peaks from occipital gray matter (A), posterior white matter (B), thalamus (C), and pons (D). The axial T2 FSE image shows the voxel location for the acquired spectrum. The chemical shift scale is in parts per million relative to tetramethylsilane.
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