David Moratal1, Lei Hou Hamilton2,
Senthil Ramamurthy3, Marijn Eduard Brummer3
1Universitat Politcnica de Valncia, Valencia,
Spain; 2Georgia Institute of Technology, Atlanta, GA, United
States; 3Emory University, Atlanta, GA, United States
The
value of a standardized simulation phantom to test and compare reconstruction
methods for cardiac imaging has become evident during last years. In this
work, a 4D analytical phantom in the Fourier domain is proposed, aimed to
serve as a flexible, objective, standardized benchmark for evaluation and
comparison of different image reconstruction techniques in dynamic 3D MRI. It
can be used to compare different non-Cartesian encoding schemes and
reconstruction methods, as well as different cardiac MRI acceleration
strategies. The k-space signal for the 4D phantom can be evaluated
analytically and sampled accordingly to any chosen k-space trajectory or
encoding scheme.
Keywords