Research focuses on developing metrology for magnetic resonance imaging (MRI) system stability and intercomparability and image distortion. This is part of a new NIST effort to assist the medical imaging community in developing more quantitative images that are traceable to the International System of Units (SI). We intend to conduct studies to assess MRI system stability and intercomparability using NIST-generated artifacts and assess methods to identify sources of instability in MRI coils systems: superconducting solenoid, shim coils, gradient coils, and RF coils. We plan to develop metrology to analyze magnetic imaging distortions as a result of implants such as stents and coils. This will involve evaluating magnetic properties of MRI system components and implants that could lead to image distortion. Measurements will be made using a 7 T SQUID magnetometer, a 7 T 300 MHz nuclear magnetic resonance system, and other superconducting high-magnetic field systems at NIST-Boulder. All of these studies will also involve measurements conducted in commercial MRI systems at local hospitals and at the National Institutes of Health (NIH). This opportunity is appropriate for physicists, chemical-physicists, or engineers interested in medical physics or medical engineering.
Biomagnetics; Biomedical engineering; Electromagnetism; Magnetics; Medical imaging; Medical physics; MRI; NMR; Superconductivity;