Magnetic properties of materials for MR engineering, micro-MR and beyond.
We present the results of a systematic measurement of the magnetic susceptibility of small material samples in a 9.4 T MRI scanner. We measured many of the most widely used materials in MR engineering and MR micro technology, including various polymers, optical and substrate glasses, resins, glues, photoresists, PCB substrates and some fluids. Based on our data, we identify particularly suitable materials with susceptibilities close to water. For polyurethane resins and elastomers, we also show the MR spectra, as they may be a good substitute for silicone elastomers and good casting resins.
Laboratory for Microactuators, Department of Microsystems Engineering - IMTEK, University of Freiburg, Germany.
Matthias C
MC
Wapler
Medical Physics, Department of Radiology, University Medical Center Freiburg, Germany.
Jochen
J
Leupold
Medical Physics, Department of Radiology, University Medical Center Freiburg, Germany.
Iulius
I
Dragonu
Medical Physics, Department of Radiology, University Medical Center Freiburg, Germany.
Dominik
D
von Elverfeld
Medical Physics, Department of Radiology, University Medical Center Freiburg, Germany.
Maxim
M
Zaitsev
Laboratory for Microactuators, Department of Microsystems Engineering - IMTEK, University of Freiburg, Germany. Electronic address: wallrabe@imtek.uni-freiburg.de.
Ulrike
U
Wallrabe
Instrumentation engineering materials; MR compatibility; MR optics materials; Magnetic susceptibility; Micro MR materials; Polyurethane