Fast triple-spin-echo Dixon (FTSED) sequence for water and fat imaging

0474777 - ÚPT 2018 RIV US eng J - Journal Article
Kořínek, Radim - Bartušek, Karel - Starčuk jr., Zenon
Fast triple-spin-echo Dixon (FTSED) sequence for water and fat imaging.
Magnetic Resonance Imaging. Roč. 37, APR (2017), s. 164-170. ISSN 0730-725X. E-ISSN 1873-5894
R&D Projects: GA MŠMT ED0017/01/01; GA MŠMT(CZ) LO1212
Grant - others:AV ČR(CZ) L100651651
Institutional support: RVO:68081731
Keywords : fast triple-spin-echo Dixon * sequence * MRI * fat fraction * water-fat * ultra-high field * 9.4 T * FTSED
OECD category: Radiology, nuclear medicine and medical imaging
Impact factor: 2.564, year: 2017

A number of 'Dixon' techniques based on fast spin echo (FSE) sequence have been proposed and successfully used in many branches of medicine. Some require only one scan, but most of them need multiple scans and long scan times. This article describes a new fast triple-spin-echo Dixon (FTSED) technique suitable for ultrahighfieldMRI, in which three specific time shifts are introduced in the echo train, thus, three images with defined water-fat phase-differences (0, pi, 2 pi) are encoded in the phase of the acquired images without extreme restrictions upon the echo duration. The water and fat images are then calculated by iterative least-squares estimation method. The sequence was successfully implemented at a 9.4 T ultra-high field MRI system and tested on a phantom and a rat.
Permanent Link: http://hdl.handle.net/11104/0271728