[Retracted] Acoustic Control through Gradient Coil Design Using a Finite-Difference-Based Method for MRI

Table 1

Characteristics of the designed coils.

Coil property	Optimized coil	Conventional coil
Transport current (A)	439.1	447.0
Efficiency (μT·m^−1·A^−1)	67.91	66.74
Max field deviation, (%)	5.0	5.0
Max ()/max () (%)	3.0	3.0
Min. wire gap (mm)	3.9	4.2
Inductance (μH)	647	574
Resistance (mΩ)	474	429
Displacement (RMS), f = 1750 Hz(μm)	1.2	2.1
FOM1, η^2/L (μ T^2·m^−2·A^−2·H^−1)	7.13	7.76