Patent ID: 9581670
Date: 2017-02-28
CPC Classifications: G01R

Claim:
1. A method for acquiring magnetic resonance (MR) data from an examination subject, comprising: operating an MR data acquisition unit, in which a subject is situated, according to a pulse sequence module in which a plurality of spatially selective radio-frequency (RF) slice excitation pulses are radiated that respectively excite nuclear spins in a plurality of respective slices in the examination subject, whereby the time between two consecutive of these RF slice excitation pulses defines a first time interval; operating said MR data acquisition unit in said sequence module to execute a preparation block following a last of said plurality of RF slice excitation pulses and, in said preparation block, radiating at least one RF refocusing pulse that causes each of the excited slices to produce one respective echo signal, with a time interval of two consecutive ones of said echo signals equaling said first time interval; operating said MR data acquisition unit to radiate a second RF refocusing pulse at a time interval after a last of said echo signals produced by said preparation block, and configuring said second RF refocusing pulse to cause each of the excited slices to produce one further echo signal, with a time interval between two consecutive ones of said further echo signals equaling said first time interval; operating said MR data acquisition unit to radiate at least one further RF refocusing pulse at a third time interval after a respective preceding RF refocusing pulse, and configuring said at least one further RF refocusing pulse to cause the excited slices to produce a plurality of temporally separated echo signals for each further RF refocusing pulse, and setting a duration of said third time interval to cause the plurality of echo signals caused by each further RF refocusing pulse to be twice as high as said plurality of excited slices; and operating said MR data acquisition unit to readout raw data representing each of said echo signals and entering said raw data into an electronic memory organized as k-space, thereby producing an electronic memory filled with data in a form allowing reconstruction of images of said plurality of slices of the subject.