| MAGLINK - Neuroscan
Compumedics |
Neuroscan is pleased to announce the patented
MagLink system for integrated EEG and
ERP recordings inside the fMRI. This second-generation system improves
on the original Opti-Link system by increasing the bandwidth and
eliminated the pre-amplifier and optical coupling. The passive
MagLink system provides the ability to
record during the pulse sequence without compromising the raw EEG data.
MagLink in conjunction with Neuroscan
amplifiers has successfully recorded EEG data through the pulse sequence
in up to 4 Tesla MRI scanners.
SCAN &
TOOLBOX 2003 provide powerful new features for on-line and
off-line reduction and removal of the ballistocardiogram and pulse
sequence artifact while retaining the integrity of the EEG.
Post-processing tools allow ERPs to be extracted which can then be
subjected to source localization and compared with the fMRI.
The patented** fMRI compatible electrode and electrode placement
technique employing a carbon fiber technology ensures that the
MagLink has negligable impact on MR signal
quality, enabling the simultaneous acquistion of uncompromised fMRI and
EEG data.
The gradient artifact that is injected into the EEG data can be reduced
by a number of different strategies that are included in the
SCAN software. Having a variety of data processing methods
available is critical to account for the different artifacts that are
encountered. The individual artifact signatures vary based on the type
of pulse sequence, magnet type and strength, the electrode impedance,
even the quality of the shim on a particular day. Neuroscans correction
methods can correct the EEG data under a variety of parameters.
The complete MagLink system consists of
MagLink Cables,
MagLink Caps, a Neuroscan amplifier and the
SCAN software. This fully functional system has acquired EEG and
fMRI data successful in the following magnets:
GE Signa 1.5 Tesla
GE Signa 3.0 Tesla
Siemens 1.5 Tesla
Siemens 3.0 Tesla
Philips 1.5 Tesla
Varian 4.0 Tesla |
| Specifications: |
- ** U.S. Patent 6,708,051 B1: Filed 11/10/99, Issued: 16/03/04
- ** U.S. Patent 5,445,162 C1: Filed 08/27/93, Issued: 08/29/95,
Recertification Issued 11/30/04
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+ 55 11 3662-0762
+ 55 11 3825-7311
