Band-limited gradient waveforms

摘要

A subject is disposed in an imaging region (10) of a magnetic resonance imaging apparatus. An operator submits a series of user preferences to the apparatus. A gradient optimizer (82) generates a gradient waveform that is optimal for the imaging procedure based on the user submitted specifications and the apparatus hardware specifications. The optimizer (82) accesses a memory that stores ideal gradient waveform models. The model that best fits the user specifications is selected and digitized (84). The digitized waveform is then convolved (86) with a band-limited kernel (88) that represents a frequency spectrum (89) of a gradient amplifier (28), producing a gradient waveform (90) that is smooth and does not exceed the capabilities of the amplifier. This optimized waveform is used in an imaging process including a collected data reconstruction portion of the process.