Stimulated anti-echo selection in spatially localized NMR spectroscopy

被引：19

作者：

Zhu, JM

Smith, ICP

机构：

[1] Natl Res Council Canada, Inst Biodiagnost, Winnipeg, MB R3B 1Y6, Canada

[2] Univ Manitoba, Dept Chem, Winnipeg, MB R3T 2N2, Canada

[3] Univ Manitoba, Dept Phys, Winnipeg, MB R3T 2N2, Canada

来源：

JOURNAL OF MAGNETIC RESONANCE | 1999年 / 136卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

stimulated anti-echo; STEAM; coherence pathway selection; selection; pulse sequence;

D O I：

10.1006/jmre.1998.1621

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Spectral localization using the stimulated-echo acquisition mode (STEAM) is one of the most popular methods in volume-localized in vivo NMR spectroscopy, The localized volume signal is generated via stimulated echoes from spins excited by three 90 degrees RF pulses, and the conventional STEAM sequence detects the stimulated-echo signal. From an analysis of the STEAM pulse sequence using the coherence transfer pathway formalism, stimulated anti-echoes are also formed by the same pulse sequence, which constitute the other half of the localized signal in the STEAM experiment. A new scheme of pulsed field gradients for the selection of stimulated anti-echoes was proposed, and localized spectroscopy in the stimulated anti-echo selection mode was achieved on a phantom and from in vivo rat brain. (C) 1999 Academic Press.

引用

页码：1 / 5

页数：5

共 22 条

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