A three-coil comparison for MR angiography.
JR Hadley, BE Chapman, JA Roberts, DC Chapman, KC Goodrich, HR Buswell, AL Alexander, JS Tsuruda, DL Parker
J Magn Reson Imaging | Published : 2000
The purpose of this work was to compare intracranial magnetic resonance angiography (MRA) image quality using three different radiofrequency coils. The three coil types included a reduced volume quadrature birdcage coil with endcap, a commercially available quadrature birdcage head coil, and a four-element phased-array coil. Signal-to-noise ratio (SNR) measurements were obtained from comparison studies performed on a uniform cylindrical phantom. MRA comparisons were performed using data acquired from 15 volunteers and applying a thick-slab three-dimensional time-of-flight sequence. Analysis was performed using the signal difference-to-noise ratio, a quantitative measure of the relative vascu..View full abstract