Practical choices of fast spin echo pulse sequence parameters: clinically useful proton density and T2-weighted contrasts.


Journal Article

With the development of fast spin echo (FSE) MRI techniques, T2-weighted images of the brain may be obtained much more quickly than when using conventional spin echo techniques (CSE), because made the individual echoes on the FSE pulse sequence are phase encoded, allowing acquisition of the same spatial information as in CSE with less excitations. The pulse sequence parameters (echo train length, bandwidth, echo spacing) are discussed. Images were obtained on four volunteers using both CSE and FSE while varying repetition time, echo time and matrix. Comparison for signal intensity gray-white differentiation, fat and CSE signal, arifacts and vascular resolution showed that FSE images comparable in quality to those of CSE can be obtained in less than half the time. A practical choice of FSE parameters is recommended for clinical use. However, artifacts, possibly related to CSF and vascular pulsation, of which the radiologist should be aware, were identified on the FSE images.

Full Text

Cited Authors

  • Tien, RD; Felsberg, GJ; MacFall, J

Published Date

  • January 1, 1992

Published In

Volume / Issue

  • 35 / 1

Start / End Page

  • 38 - 41

PubMed ID

  • 1337768

Pubmed Central ID

  • 1337768

Electronic International Standard Serial Number (EISSN)

  • 1432-1920

International Standard Serial Number (ISSN)

  • 0028-3940

Digital Object Identifier (DOI)

  • 10.1007/bf00588276


  • eng