Hannah Scholten1, Manuel Stich2, and Herbert Köstler1
1Department of Diagnostic and Interventional Radiology, University of Würzburg, Würzburg, Germany, 2Siemens Healthcare, Erlangen, Germany
1Department of Diagnostic and Interventional Radiology, University of Würzburg, Würzburg, Germany, 2Siemens Healthcare, Erlangen, Germany
We present a new phantom-based measurement
approach to determine the gradient system transfer function with good SNR and a
high frequency resolution below 10 Hz.
Figure
2: Magnitude of the linear self-term of the GSTF in x-direction, evaluated with
three different datasets: All 18 readouts from all six measurements (top), only
the first readout of each of the six measurements (middle) and only the first
readout of the first measurement (bottom). For better visibility, the curves
are plotted with an offset of 0.05 between each other.
Figure
1: Schematic sequence timing of the
first and second measurement. The durations and amplitudes of the RF pulses,
gradients and readouts are not displayed to scale. For clarity, only three of
the 16 triangles are depicted. Each readout had a duration of approximately 25 ms.
