VectorviewDescription - Meg Wiki

Revision 2 as of 2010-04-15 11:24:59

Clear message
location: VectorviewDescription

The Elekta Neuromag Vectorview System

Our Vectorview systems contains 102 magnetometers and 204 planar gradiometers. Magnetometers consist of a single coil which measures the magnetic flux perpendicular to its surface. Planar gradiometers consist of a "figure-of-eight"-type coil configuration. The measured signal is the difference between the two loops of the "eight", or the spatial gradient. There are two orthogonal planar gradiometers at each location. This arrangement is illustrated in the following figure (black: magnetometer; grey and white: two gradiometers).

FreewarePackages

[http://imaging.mrc-cbu.cam.ac.uk/meg/SpmAnalysis SPM], developed at the [http://www.fil.ion.ucl.ac.uk/spm/ FIL] and at the [http://imaging.mrc-cbu.cam.ac.uk/meg/SpmAnalysis CBU].