Abstract #1662
Variable Echotimes in Radial Acquisitions to Achieve a Uniform Artifact for Passive MR Guidewires
Axel Joachim Krafft 1,2 , Simon Rei 1 , Klaus Duering 3 , and Michael Bock 1
1
Radiology - Medical Physics, University
Medical Center Freiburg, Freiburg, Germany,
2
German
Cancer Consortium (DKTK), Heidelberg, Germany,
3
MaRVis
Medical GmbH, Hannover, Germany
Recently, dedicated passive MR-compatible guidewires
were introduced that employ embedded iron particles to
generate a local artifact for device visualization. The
generated artifact depends in particular on the echo
time (TE) and on the orientation of the guidewire marker
relatively to the main magnetic field. In conventional
gradient-echo imaging, the guidewire exhibits a wide
artifact for orientations perpendicular to the main
magnetic field and a narrow one parallel to it. Here, we
present a radial acquisition scheme to realize a
uniform, orientation-independent artifact for improved
guidewire visualization.
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