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Título del libro: Proceedings Of The 2018 20th International Conference On Electromagnetics In Advanced Applications, Iceaa 2018
Título del capítulo: Travelling-wave MRI for a small-bore imager at 15.2 T

Autores UNAM:
JAIME FABIAN VAZQUEZ DE LA ROSA; SERGIO ENRIQUE SOLIS NAJERA; RODRIGO ALFONSO MARTIN SALAS; LUCIA MEDINA GOMEZ; OSCAR RENE MARRUFO MELENDEZ; ALFREDO ODON RODRIGUEZ GONZALEZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2018
Palabras clave:

Dielectric waveguides; Wave transmission; Circular cross-sections; High dielectric materials; Inhomogeneities; Parallel plate waveguide; RF coil; Travelling waves; Ultra-high field mris; Ultra-high fields; Dielectric materials


Resumen:

The travelling-wave MRI approach is an alternative to overcome the B1 inhomogeneity at ultra high field MRI for human applications. More recently, this concept has been also used with small-bore MR imagers. Experiments have been mainly conducted using waveguides with circular cross section and dielectric materials. In this paper, we used a parallel-plate waveguide and a bioinspired surface coil to generate mouse images at 15.2 T. Ex vivo mouse images were acquired without high dielectric materials to conduct the signal at the right frequency. These experimental findings are in very good concordance with results obtained at 3 T and 9.4 T. We demonstrated that travelling-wave MRI with high SNR can be performed with a simple waveguide and one surface coil at ultra high field. © 2018 IEEE.


Entidades citadas de la UNAM: