Enlin Qian1 and Sairam Geethanath1
1Columbia Magnetic Resonance Research Center, New York, NY, United States
1Columbia Magnetic Resonance Research Center, New York, NY, United States
We developed an end to end, open source, vendor neutral MRF package named OMEGA using Pulseq. OMEGA implemented a MRF sequence and generated T1 and T2 maps within 20% of gold standard measurements for 17 spheres in ISMRM/NIST phantom.
Figure 4: (a) T1 map of T1 array and (b) T2 map of T2 array generated using OMEGA. The units are in ms. The boxplots of min and max for each spheres in (c) T1 spheres and (d) T2 spheres are plotted. The red triangles are the GS values measured using the spin-echo method. The black squares are the data generated using OMEGA.
Figure 2: (a) Flip angle (FA) and (b) repetition time (TR) design in OMEGA. The design is identical to the previous MRF design in literature. (c) is the RF magnitude plot of the first 13 pulses implemented using Pulseq. The first pulse is the inversion pulse.