A petal resonator volume coil for MR neuroimaging

A.O. Rodríguez, S.S. Hidalgo, R. Rojas, F.A. Barrios

Abstract


A variant of the petal resonator (PERES) coil was developed for magnetic resonance neuroimaging applications. It is formed by eight \mbox{2 cm-radius} petal coils around a central circular-shaped coil with a total radius of 10 cm. As dictated by the theory proposed by Mansfield in 1988, the small coil centers were separated by three times the petal coil radius to avoid mutual inductance between them. The present configuration can easily accommodate a head shape and can be placed nearer the subject to be imaged than other volume coils. Enhancement factor maps were computed to study the coil design performance based on the PERES coil foundations. Coil uniformity was theoretically investigated using the quasi-static approach for various petal coil radii. An 8-petal band coil was built, and in vivo and in vitro experiments were conducted on a clinical MR imager together with standard imaging sequences. Brain images of a healthy volunteer are reported to show the utility of the coil.

Keywords


MR neuroimaging; resonator; coil; sensitivity; uniformity

Full Text:

PDF

Refbacks

  • There are currently no refbacks.


Revista Mexicana de Física

ISSN: 2683-2224 (on line), 0035-001X (print)

Bimonthly publication of Sociedad Mexicana de Física, A.C.
Departamento de Física, 2o. Piso, Facultad de Ciencias, UNAM.
Circuito Exterior s/n, Ciudad Universitaria. C. P. 04510 Ciudad de México.
Apartado Postal 70-348, Coyoacán, 04511 Ciudad de México.
Tel/Fax: (52) 55-5622-4946, (52) 55-5622-4840. rmf@ciencias.unam.mx