Figure 7

Illustration based on a Brodatz texture (P. Brodatz, “Textures: A Photographic Album for Artists and Designers”, Dover Publications, New York, 1966) of the sensitivity coil profile. On the left, the original Brodatz texture. On the right the same texture modified by applying a typical surface coil gradient. Near the coil, the sensitivity is optimal and consequently SNR is increased, while away from the coil centre, the signal decreases.