Abstract #4286

Side Effects of the Spoiler Gradient in Gradient Echo Sequences: Diffusion Attenuation of the Signal from Nuclei in Thermal Equilibrium and in Hyperpolarised State

Sebastien Br¹, Matthias Weigel², Valerij G. Kiselev², Jochen Leupold²

¹Medical Physics Department of Radiology , University Hospital Freiburg, Freiburg, Germany; ²Medical Physics Department of Radiology, University Hospital Freiburg, Freiburg, Germany

Simulations and experiments exploring the steady state signal amplitude dependency on the spoiler gradient in unbalanced gradient echo sequences and RF-spoiled gradient echo sequences are shown. Additionally, for these sequences and also under consideration of diffusion, signal evolution over the sequence repetition cycles is simulated for hyperpolarized nuclei in gas and liquid phase.