Statistical analysis of the magnetic resonance transmit radiofrequency field by the saturated Turbo FLASH method

摘要

The error propagation theory and Monte Carlo simulations were employed to quantitatively evaluate the robustness of the saturated Turbo FLASH (Fast Low Angle SHot, satTFL) method. The uncertainty and probability density function (PDF) of the satTFL were derived. An out-of-phase method was introduced to correct flip angles larger than 90 degrees. Monte Carlo simulations were implemented to estimate the impact of Gaussian white noises in the image domain and thus the sensitivity could be visualized for different flip angles and signal to noise ratios (SNRs). The uncertainty, Monte Carlo simulations and experiments show that the satTFL is more precise for flip angles around 90 degrees.