Title

Theoretical Evaluation of Magnetization Behavior in PRESS: for Determination of the Spin-Lattice Relaxation Time, T1

Abstract

In single-voxel magnetic resonance spectroscopy (MRS), the stimulated echo acquisition mode (STEAM) pulse sequence has been widely used, but if a short echo time is unnecessary, the point-resolved spectroscopy (PRESS) pulse sequence has its own advantage that, theoretically, the magnetization is twice that of STEAM, which provides a better signal-to-noise ratio (SNR). This might be helpful in the treatment of a weak signal, but, to our knowledge, there has been no theoretical description of the steady-state magnetization in PRESS. Thus, using the vector model, we derived the equation of magnetization as a function of the echo time (TE) and the repetition time (TR), and we compared the extracted T1 value of a water phantom with the simple exponentially fitted value.

Department(s)

Mining and Nuclear Engineering

Keywords and Phrases

MRS; PRESS; Spin-Lattice Relaxation Time; Vector Model

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 Korean Physical Society, All rights reserved.

This document is currently not available here.

Share

 
COinS