Optimization of Encoding Fields for PatLoc Imaging

Anna M. Welz¹, Hartmut Schmidt², Jrgen Hennig¹, Maxim Zaitsev¹

Todays limitation of gradient performance is predominantly determined by peripheral nerve stimualtion. To overcome this problem, imaging with local non-bijective, non-linear encoding fields was proposed which allow for higherDB_max/dt and shifts this problem back into the hardware regime. These special multipolar encoding fields have more parameters to be optimized then linear gradients, like number of poles, local gradient strength and orthogonality. This abstract studies the properties of such multipolar fields and determines the optimal PatLoc encoding field.