Abstract #3976
Magnetic Resonance Imaging (MRI) Relaxometry: Assessment of reproducibility between Magnetic Resonance scanners at 1.5T
Qurain T Alshammari 1,2 , Graham J Galloway 1 , Mark W Strudwick 3,4 , Wendy E Strugnell 5 , and Christian Hamilton-Craig 1,6
1
Centre for Advanced Imaging, The University
of Queensland, Brisbane, Queensland, Australia,
2
College
of applied Medical Science, Hail, Saudi Arabia,
3
Dept
of Medical Imaging and Radiation Science, Monash
University, Melbourne, Australia,
4
School
of Information Technology and Electrical engineering,
The University of Queensland, Queensland, Australia,
5
The
Richard Slaughter Centre of Excellence in Cardiac MRI,
Prince Charles Hospital, Queensland, Australia,
6
University
of Washington, Seattle, United States
Native T1 and T2* relaxometry are important techniques
for quantitative analysis of myocardial substrate. 10
healthy volunteers underwent CMR on two 1.5T systems
(Siemens Avanto and Siemens Aera) at a 3 year interval
using a Modified Look-Locker Inversion MOLLI 3,3,5 and
T2* sequences. T1-MOLLI and T2* demonstrate high
consistency and inter-study reproducibility between
scanners, with no significant difference in T1 and T2*
after 3 years. CMR relaxometry should therefore be
comparable between centres for follow-up in individual
patients using different CMR scanners, with different
bore sizes, within the same vendor at 1.5T
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