Patent ID: 6198289
Filing Date: 2001-03-06
Classification: G01R

Abstract:
In an MR imaging system, a method for operating an MR gradient coil during a specified imaging sequence comprising first and second sub-sequences, said method comprising the steps of:driving said coil during said first sub-sequence to produce a number of first gradient pulses, each of said first gradient pulses having a first gradient amplitude and a first slew-rate which are equal to or less than a maximum first gradient amplitude and a maximum first slew-rate, respectively; anddriving said coil during said second sub-sequence to produce a number of second gradient pulses, each of said second gradient pulses having a second gradient amplitude which is selectively different from said first amplitude, and a second slew-rate which is selectively different from said first slew rate, said second gradient amplitude and said second slew rate being equal to or less than a maximum second gradient amplitude and a maximum second slew-rate, respectively.