Ultra-high-field MRI using composite RF (STEP) pulses.
NMR Biomed
; 34(2): e4445, 2021 02.
Article
em En
| MEDLINE
| ID: mdl-33205505
ABSTRACT
Ultra-high field MRI offers many opportunities to expand the applications of MRI. In order for this to be realized, the technical problems associated with MRI at field strengths of 7 T and greater need to be solved or mitigated. This paper explores the use of new variations of composite RF pulses, named serial transmit excitation pulses (STEP), in contrast to parallel pulse techniques, in order to remove and/or mitigate the effects of non-uniform B1 excitation fields associated with the subject (eg the human brain). Several techniques based on STEP sequences are introduced and their application to human brain imaging is presented and evaluated.
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Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Neuroimagem
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article