HF pulse sequence generation method for nuclear magnetic resonance measurements

摘要

The method involves entering the appropriate data for the required pulse profile. The initial weighting function is calculated and a set of the so-called SLR polynomials is calculated, using a least mean squares procedure incorporating the initial weighting function and the required pulse profile. The inverse SLR transformation is used to generate the HF pulse envelope curve. This pulse sequence can be generated in a magnetic resonance imaging system to acquire data on an object. The error in the values of the SLR polynomials can be determined, and the calculations repeated until the error is reduced below a set maximum. The user may, alternatively, enter the required phase profile for the calculation.