RT Journal Article
T1 MRI visualization of small structures using improved surface coils
A1 Rivera, Manuel
A1 Vaquero López, Juan José
A1 Santos, Andrés
A1 Ruiz Cabello, Jesús
A1 Pozo, Francisco del
AB In this paper we present the spatial resolution enhancement and noise reduction level achieved with an optimizedinductively coupled surface coil specificall designed for our experiments. The technique of designing andimplementing customized coils for magnetic resonance imaging of very small structures is described. We havedesigned a low cost prototype of an inductively coupled circular surface coil, tuned for 1H magnetic resonanceimaging at 200 MHz. The coil is mounted on a customized teflo support. The inductive coupling used in this coilimproves the signal-to-noise ratio by reducing various loss mechanisms (specially the dielectric losses). Testimages have been acquired to determine the evolution of induced articular lesions in a rabbit animal model, aswell as brain tumors in rats. The images show high spatial resolution, excellent B1 fiel homogeneity and no ‘‘hotspots’’. Comparing these images with those acquired with conventional coils, one find better spatial resolutionand signal-to-noise ratio, as well as larger fiel of view with less intense illumination artifact. The methodologycan be used in any application that requires high quality imaging of small structures.
PB Elsevier
SN 0730-725X
YR 1998
FD 1998-02
LK https://hdl.handle.net/10016/14554
UL https://hdl.handle.net/10016/14554
LA eng
DS e-Archivo
RD 1 may. 2024