In vivo localized1H-spectroscopy with spin echos and stimulated echos: A quantitative comparison |
| |
Authors: | D. Hentschel R. Ladebeck |
| |
Affiliation: | 1. Siemens AG, Medical Engineering Group, Henkestr. 127, D 8520, Erlangen, FRG
|
| |
Abstract: | Stimulated echos (STE) are frequently used for localization inin vivo spectroscopy. However, in theory the signal is reduced by a factor of 2 compared to spin echos. We have compared the STEAM technique and a method utilizing a double spin echo (DSE) for localization. Projections and spectra of phantoms and the human brain have been measured with a 4 T whole body system. Both methods provide a reliable localization in one scan. The spectra obtained with both techniques are similar, with one significant exception: the DSE signal strength is stronger than that of STEAM by a factor of about 1.9. The advantages and disadvantages of both methods with respect to RF- power, gradient strength, and spectral editing will be discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|