Patent ID: 9476955
Filing Date: 2016-10-25
CPC Classification: A61B,G01R

Claim Text:
1. A method to operate a magnetic resonance tomography system having a magnetic resonance data acquisition scanner that has a radio-frequency (RF) radiator and a gradient coil arrangement comprising: operating the RF radiator to excite nuclear spins in a plurality of slices in an examination subject in said magnetic resonance data acquisition scanner at a first time interval by radiating a series of spatially selective RF slice excitation pulses, with each RF slice excitation pulse in said series exciting nuclear spins in a respective slice in said plurality of slices; operating the RF radiator to emit an RF refocusing pulse in said magnetic resonance data acquisition scanner at a second time interval after a first RF excitation pulse or after a last RF excitation pulse in said series of spatially selective RF slice excitation pulses, and emitting at least one additional RF refocusing pulse at a third time interval after a preceding RF refocusing pulse, with said third interval to being twice as long as said second time interval, and with each of said RF refocusing pulses having a width so as to generate a plurality of chronologically successive separate echo signals for each RF refocusing pulse, with each RF refocusing pulse being simultaneously effective in multiple excited slices among said plurality of slices; operating the gradient coil arrangement to read out said echo signals for each refocusing pulse under a readout gradient in a corresponding number of readout windows; and providing the echo signals that have been read out to a processor and in said processor, converting said echo signals into magnetic resonance data and making said magnetic resonance data available from said processor in electronic form, as a data file.