Abstract #1302
Evaluation of an MR compatible head fixation device using a custom-made 3D printed frame in combination with a thermoplastic head mask
Daniel Gllmar 1 , Karl-Heinz Herrmann 1 , Clemens Grtner 1,2 , Nico Banz 3 , Thomas G Wendt 3 , and Jrgen R Reichenbach 1
1
Medical Physics Group, Institute of
Diagnostic and Interventional Radiology I, Jena
University Hospital - Friedrich Schiller University
Jena, Jena, Germany,
2
Medical
Engeneering and Biotechnology, University of Applied
Sciences, Jena, Germany,
3
Department
of Radiotheraphy and Radiooncology, Jena University
Hospital - Friedrich Schiller University Jena, Jena,
Germany
Head fixation using a custom-made frame in combination
with a thermoplastic head mask was evaluated in terms of
repositioning accuracy as well as degree of
immobilization. In back-to-back scans regular fixation
using clamps performed equally well compared to mask
fixation. Repositioning accuracy using mask fixation was
found to be very high (< 0.2mm, < 0.2). Under heavy
motion the degree of immobilization did not exceed 1.5
mm in translation and 1.5 in rotation. The approach can
be used to acquire MR scans which require minimal head
motion during very long scan times (e.g. DTI, fMRI,
Perfusion, high-res anatomy scans).
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