Verbesserte Echoplanare Magnetresonanzbildgebung

Details

Veröffentlichungs-Nr.

EP4752587

Anmeldetag

29. November 2024

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

Abstract

A method according to the invention to acquire scan data of a region of interest of an examination object by means of an echo-planar (EPI) technique, comprises the steps of: - acquiring and recording a first set of scan data in at least two shots using a flyback trajectory, - acquiring and recording a second set of scan data using the same flyback trajectory used for the first set of scan data, but with a starting point of the flyback trajectory shifted in the phase-encoding direction. By acquiring and recording the second set of scan data with the same flyback trajectory only with a shifted starting point both Nyquist ghosting and flow ghosting can be improved without changing a necessary echo spacing, thereby also reducing imaging distortion and chemical shift, and without changing the bipolar readout gradient. A full set (according to Nyquist) of all k-space lines can be yielded for each polarity of the bipolar readout gradient.

Anmelder

Firma

Siemens Healthineers AG

Land

🇩🇪 Deutschland