Software-Based Automated Measurement of Susceptibility Artifacts on Magnetic Resonance Images

Andreas Heinrich¹, Felix Guettler¹

A platform independent software system (SAM) for rapid, objective and reproducible measurement of susceptibility artifacts, complying with ASTM F2119-07, was developed. The artifact of a defined titanium cylinder was imaged in a Siemens Magnetom Avanto. For evaluation purposes 13 probands determined the greatest artifact, manually with a ruler (Osirix) and with the SAM software, which could reduce the dispersion of the results by more than 80%. Furthermore, the SAM software safes 50% of MR measurement time, since the required ASTM reference images without test object are no longer necessary.