The optimization of an 8-channel transceive volume array for small animal MRI at 9.4T

A shielded, non-overlapped 9.4T 8-element transceive volume array was designed and constructed for small animal MRI studies. The coil configuration was optimized to obtain an appropriate trade-off between coil sensitivity, field penetration, and mutual decoupling. The simulated and experimental results presented herein demonstrate that the new volume array is capable of offering higher RF penetration, efficiency and minimum mutual coupling; the proposed technique can also be implemented for a wide range of ultra high-field applications, including dense coil arrays for human studies.

[1]  Stuart Crozier,et al.  Focused, eight‐element transceive phased array coil for parallel magnetic resonance imaging of the chest—Theoretical considerations , 2005, Magnetic resonance in medicine.

[2]  Stuart Crozier,et al.  A stripline-like coil element structure for high field phased array coils and its application for a 8-channel 9.4T small animal transceive array , 2010 .

[3]  P. Roemer,et al.  The NMR phased array , 1990, Magnetic resonance in medicine.

[4]  Ray F. Lee,et al.  Coupling and decoupling theory and its application to the MRI phased array , 2002, Magnetic resonance in medicine.

[5]  Xiaoliang Zhang,et al.  Design of an inductively decoupled microstrip array at 9.4 T. , 2006, Journal of magnetic resonance.

[6]  Feng Liu,et al.  A ultra high field multi-element transceive volume array for small animal MRI , 2008, 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[7]  Thomas F. Coleman,et al.  A Subspace, Interior, and Conjugate Gradient Method for Large-Scale Bound-Constrained Minimization Problems , 1999, SIAM J. Sci. Comput..

[8]  Stuart Crozier,et al.  Multiple‐acquisition parallel imaging combined with a transceive array for the amelioration of high‐field RF distortion: A modeling study , 2006 .

[9]  Andrew Webb,et al.  Design of a capacitively decoupled transmit/receive NMR phased array for high field microscopy at 14.1T. , 2004, Journal of magnetic resonance.

[10]  Stuart Crozier,et al.  A theoretical comparison of two optimization methods for radiofrequency drive schemes in high frequency MRI resonators , 2005, Physics in medicine and biology.