University of Sussex
Browse

File(s) not publicly available

Accurate multislice gradient echo T(1) measurement in the presence of non-ideal RF pulse shape and RF field nonuniformity

journal contribution
posted on 2023-06-07, 13:50 authored by G. J. Parker, G. J. Barker, P. S. Tofts
A methodology is presented for estimating T(1) using a two-point technique with a standard multislice gradient echo sequence. The method explicitly corrects for the shape of the RF pulse and for spatial variations in transmitted RF field intensity. Including these factors in the calculation of T(1) gives a substantial improvement in accuracy and precision of two-point gradient echo T(1) measurements in the presence of RF nonuniformity and non-ideal pulse profiles. The mean accuracy of the technique was found to be 1.4%. The mean precision was found to be 3.0%. The mean variation along the axis of a head coil was found to be 2.3%.

History

Publication status

  • Published

Journal

Magnetic Resonance in Medicine

ISSN

0740-3194

Publisher

Wiley-Blackwell

Issue

5

Volume

45

Page range

838-845

Department affiliated with

  • BSMS Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2007-02-28

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC