Magnetoencephalogram systems developed at KIT

摘要: We have developed new systems for magnetoencephalography (MEG). The pick up coil is a coaxial type first-order gradiometer with 50-mm base line. magnetic field resolution of the system about 4 fT/Hz/sup 0.5/ or 0.8 (fT/cm)/Hz/sup in white noise region. unique feature gantry-free horizontal dewar, which fabricated through what we call "ship-in-a-bottle approach". Less than 10-liter/day liquid helium consumption 100-liter capacity realized. One merits dewar that small room sufficient installation because low height (0.89 m) dewar. Another merit patient can be measured lying position more relaxing compared to conventional vertical type.