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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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