Abstract #4811
Image quality improvement via phase correction for travelling wave MRI at 3T
Fabian Vazquez 1 , Oscar Marrufo 2 , Sergio E Solis 1 , and Alfredo O Rodriguez 3
1
Dep Phys, FC UNAM, Mexico, DF, Mexico,
2
Dep
Neuroimage, INNN-MVS, DF, Mexico, Mexico,
3
Dep
Elec Ing, UAM Iztapalapa, Mexico, DF, Mexico
Travelling wave magnetic resonance imaging (twMRI)
offers an approach to acquire larger fields-of-view
images at 7T or greater. Images have two main problems:
inhomogeneous acquisition due to the physical
restriction in coaxial waveguide at 7T, and added noise
in parallel-plate waveguide (PPWG) at 3T. We measured
the signal phase added by a PPWG in twMR images at 3T,
using a transmission circular coil and other one for
reception tuned at 128 MHz. Phantom images were acquired
with the PPWG in clinical scanner at 3T. The phase shift
information was used to improve the image quality and
results compared.
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