Katsumi Kose1, Ryoichi Kose1, and Yasuhiko Terada2
1MRIsimulations Inc., Tokyo, Japan, 2University of Tsukuba, Tsukuba, Japan
1MRIsimulations Inc., Tokyo, Japan, 2University of Tsukuba, Tsukuba, Japan
A 4D numerical phantom is indispensable for Bloch
simulations of protons in biological tissues with complex distribution of
materials. In this study, a 4D phantom was created using an image dataset of an
actual biological sample containing water and fat, and the Bloch simulation was
performed.
Fig.3.
The four-dimensional numerical phantom for the Bloch simulations of a water-fat
system. The 3D water phantom was used for the Bloch simulation in the uniform
magnetic field corresponding to -114 Hz resonance frequency. The 3D fat phantom was
used for the Bloch simulation in the uniform magnetic field corresponding to +114
Hz resonance frequency. The simulated images were reconstructed after adding
the two sets of MR signal obtained for the water and fat phantoms.
Fig.4.
(a) The experimentally acquired central cross section of the block bacon for
the in-phase and out-of-phase conditions. (b) The simulated central cross
section of the block bacon for the in-phase and out-of-phase conditions.
