| 摘要 |
In a method and apparatus to acquire magnetic resonance data in a selected region of an examination subject without aliasing artifacts and with a reduced acquisition time, a spatially selective excitation pulse is radiated into the examination subject to excite nuclear spins in at least the selected region, and after radiating the excitation pulse, a series of at least two refocusing pulses is radiated into the examination subject, which generate variable flip angles adapted to a predetermined signal curve. At least the second refocusing pulse, and possibly every additional one of the refocusing pulses of this series, is a non-selective pulse. The spin echo signals generated by the refocusing pulses are acquired as magnetic resonance data. Gradients for spatial coding are activated before and after the spatially selective excitation pulse, the refocusing pulses and during the data acquisition. The acquired magnetic resonance data are stored and/or converted into image data for display. |
