Zhong Chen1, Congbo Cai1, Shuhui
Cai1, Jianhui Zhong2
1Departments of Physics and
Communication Engineering, Fujian Key Laboratory of Plasma and Magnetic Resonance,
Xiamen University, Xiamen, Fujian, China; 2Departments of
Radiology and Biomedical Engineering, University of Rochester, Rochester, NY,
United States
The
iMQC signal intensity can be enhanced by replacing the conventional
sinusoidal distant dipolar field (DDF) with square wave DDF. In this
abstract, instead of a series of adiabatic inversion pulses proposed
previously, a more efficient composite adiabatic inversion pulse was applied
to create square wave DDF. The square wave DDF was applied to MR imaging for
the first time. The experimental results show that using the proposed square
wave DDF in the ZEBRA sequence can enhance the iMQC signal intensity by about
1.5 times in comparison to the conventional CRAZED sequence.