Design and optimization of a breast coil for magnetic resonance imaging.

Mathematical methods were implemented to optimize the configuration of specially designed breast coils leading to substantial improvements in magnetic field homogeneity. Multiple-turn shaped coils were constructed according to mathematically determined parameters derived from B1 field optimization calculations. Significant improvements in coil homogeneity were obtained without overcompromising quality factors and signal-to-noise ratios (S/N). Coil performance was verified using both phantom and breast images, revealing improved coil performance particularly in the region adjacent to the chest wall. These new coils are easily constructed and can be designed to accommodate various breast sizes. They can be utilized in the transmit/receive or receive only mode and can be doubly tuned for multinuclear spectroscopic studies. Moreover, nothing precludes their use to image both breasts simultaneously. The results demonstrate the ease of our approach and suggests that these methods can be feasibly applied to other surface coil designs.