Abstract #1277

2D ²³Na imaging using half-VERSE pulses

Marco L. Wittrich^1,2, Armin M. Nagel^1,3, Sebastian Schmitter^1,4, Peter Bachert^1,2, Mark E. Ladd^1,2,5, and Fabian J Kratzer^1,2

¹Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, ²Faculty of Physics and Astronomy, University of Heidelberg, Heidelberg, Germany, ³Institute of Radiology, University Hospital Erlangen, Friedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU), Erlangen-Nürnberg, Germany, ⁴Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany, ⁵Faculty of Medecine, University of Heidelberg, Heidelberg, Germany

Synopsis

In this work, a 2D radial ²³Na sequence with half-VERSE pulses was developed to reduce SAR and achieve ultra-short TEs. Simulations and measurements of the slice profiles showed good agreement between full- and half-VERSE pulses with a maximal deviation in the FWHM of 7%.

In measurements, the TE_min was reduced from 1.41ms to 0.1ms by the use of half- instead of full-VERSE pulses. This resulted in an SNR gain of up to 18% in phantom, 7% in brain and 26% in calf measurements.

Last, rapid single-slice ²³Na images (2.9x2.9x12mm³) were obtained in a clinically feasible acquisition time of 2:56min.

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2D 23Na imaging using half-VERSE pulses

Synopsis

2D ²³Na imaging using half-VERSE pulses