A novel multi-segment surface coil for neuro-functional magnetic resonance imaging.
The construction of two novel mult-segment (MS) resonators are described. The signal-to-noise ratio (SNR) and B1 homogeneity of the coils are compared with that of a surface coil and a standard quadrature head coil. The images obtained with the MS designs revealed a surface coil-like fall-off in signal with depth. The SNR offered by MS coils was found to be better than the head coil at depths less than approximately 6 cm. Bilateral motor cortex activation on normal subjects performing finger tapping tasks is demonstrated.
Lin
C S
CS
Department of Radiology, Magnetic Resonance Imaging Center, Georgetown University Medical Center, Washington, DC 20007, USA.
Rajan
S S
SS
Gold
J
J
D004867:Equipment Design; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008962:Models, Theoretical; D009044:Motor Cortex / Q000033:anatomy & histology*; D019047:Phantoms, Imaging; D012016:Reference Values; D012680:Sensitivity and Specificity