AJR Join ARRS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Melhem, E. R.
Right arrow Articles by Yucel, E. K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Melhem, E. R.
Right arrow Articles by Yucel, E. K.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?

American Journal of Roentgenology, Vol 168, 1091-1095, Copyright © 1997 by American Roentgen Ray Society

ARTICLES

Improved contrast of enhancing brain lesions using contrast-enhanced T1- weighted fast spin-echo MR imaging

ER Melhem, PL Guidone, H Jara and EK Yucel
Department of Radiology, Boston University Medical Center, MA 02118, USA.

OBJECTIVE: The purpose of this study was to evaluate the ability of T1- weighted fast spin-echo MR sequences to provide improved contrast-to- noise ratios for contrast-enhanced lesions during acquisition times shorter than those used for conventional T1-weighted spin-echo MR sequences. SUBJECTS AND METHODS: We compared contrast-to-noise ratios of 32 enhancing brain lesions in 25 patients on T1-weighted spin-echo (546/10 [TR/TE]; two excitations; acquisition time, 4 min 12 sec) and on fast spin-echo (546/10 [TR/effective TE]; echo-train length, 4; echo spacing, 10 msec; two excitations; acquisition time, 1 min 45 sec) MR images obtained at 1.5 T after i.v. administration of 0.10 mmol/kg gadopentetate dimeglumine. RESULTS: The contrast-enhanced T1-weighted fast spin-echo MR images showed approximately a 12% reduction in the signal-to-noise ratios of the background white matter without an accompanying reduction in the signal-to-noise ratios of the enhancing lesions or CSF when compared with the contrast-enhanced T1-weighted spin-echo MR images. The contrast-enhanced T1-weighted fast spin-echo MR images provided a 23% improvement in the contrast-to-noise ratios of enhancing lesions over the contrast-enhanced T1-weighted spin-echo images (p < .001). CONCLUSION: Contrast-enhanced T1-weighted fast spin- echo MR imaging showed a statistically significant improvement in contrast-to-noise ratios at much shorter scan times than those used in conventional contrast-enhanced T1-weighted spin-echo MR imaging.
Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?


This article has been cited by other articles:


Home page
 Am. J. Neuroradiol.Home page
S. K. Singh, N. E. Leeds, and L. E. Ginsberg
MR Imaging of Leptomeningeal Metastases: Comparison of Three Sequences
AJNR Am. J. Neuroradiol., May 1, 2002; 23(5): 817 - 821.
[Abstract] [Full Text] [PDF]

Home page
 RadiologyHome page
V. P. Mathews, K. S. Caldemeyer, M. J. Lowe, S. L. Greenspan, D. M. Weber, and J. L. Ulmer
Brain: Gadolinium-enhanced Fast Fluid-attenuated Inversion-Recovery MR Imaging
Radiology, April 1, 1999; 211(1): 257 - 263.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1997 by the American Roentgen Ray Society.