Calculation of Eddy Power Losses Within the Cryostat Generated by Array or Conventional Gradient Assembly for Arbitrary Pulse Sequences

Motivation: Existing eddy current calculation methods aren't suitable for fast eddy power loss calculations. Goal(s): We propose a quick calculation to estimate the time-average eddy power loss within the cryostat, generated by gradient assembly (array or conventional) and arbitrary pulse sequences. Approach: The frequency response of the fields generated by the gradient assembly elements (array or conventional) on the cryostat's surface is combined with the harmonic components of the driving pulse sequences. Results: A typical pulse sequence feeds a whole-body conventional x-gradient coil, and the proposed method estimates the time-average dissipated power on the fly, comparable with simulation results reported by commercial software. Impact: Our method optimizes gradient assembly (array/conventional) tuning, empowering MRI engineers with fast and precise dissipated power estimates. This approach sparks novel research paths, enhancing MRI system efficiency and enabling tailored pulse sequences for gradient coils, advancing the field significantly.