Abstract #4451
Free-breathing myocardial 3D T1 mapping using inversion time specific image-based respiratory navigators
Markus Henningsson 1 , Rene Botnar 1 , and Tobias Voigt 1,2
1
Division of Imaging Sciences and Biomedical
Engineering, King's College London, London, United
Kingdom,
2
Clinical
Research Europe, Philips Research, Hamburg, United
Kingdom
Free-breathing whole-heart myocardial T1 mapping is
technically challenging due to the difficulty of
respiratory motion compensation. Conventional
respiratory gating techniques are impractical due to the
prolonged scan time associated with these approaches. In
this work we propose an image-based navigator approach
which allows for direct tracking of the respiratory
motion of the heart. Although this means navigators at
different inversion times have different contrast,
potentially leading to registration errors, we solve
this problem by using a separate navigator reference for
each inversion time. We evaluate this free-breathing
three-dimensional T1-mapping method in 7 healthy
volunteers and compared it to 2D T1-mapping.
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