Equipments for fMRI

Friday, 08 de November de 2019

Functional magnetic resonance imaging (fMRI) is a method that measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases. Depending on the scientific work performed, an association of fMRI with other techniques and ancillary equipment is required for the acquisition of data related to the most accurate brain activity of your study. One of the techniques most related to electroencephalography (EEG). EEG is an electrophysiological monitoring method that is used to record brain electrical activity. It is a non-invasive method that utilizes an electrical record used on an individual's scalp.
BRAINAMP MR PLUS

Combined EEG–fMRI has been shown to help to characterize brain networks involved in epileptic activity, as well as in different sensory, motor, and cognitive functions. A good understanding of the electrophysiological correlates of the blood oxygen level‐dependent (BOLD) signal is necessary to interpret fMRI maps, particularly when obtained in combination with EEG. The acquisition of the electrophysiological signal is performed at the same time as the acquisition of magnetic resonance images, and for this, and adapted EEG electrode cap, different from the conventional one, is required. The electrode cap and electrodes, which are connected directly to the subject, are the items in our fMRI product portfolio that more than the others require constant modifications, in order to guarantee always the highest safety and comfort of the test subject as well as to ensure an outstanding data quality both from the EEG and fMRI point of view (BrainAmp MR plus). Other equipment, like special monitors, also is important for great image acquisition. The monitors fMRI Compatible, with no time lag displays, an integrated sensor for luminance calibration and, of course, no interference with the scanner, even when positioned right at the exit of the bore (BOLDscreen monitors).

To learn more about, access our Knowledge-base.

References:

Murta, Teresa, et al. "Electrophysiological correlates of the BOLD signal for EEG‐informed fMRI." Human brain mapping 36.1 (2015): 391-414.

Magnetic Resonance, a critical peer-reviewed introduction; functional MRI". European Magnetic Resonance Forum. Retrieved 17 November 2014.

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Autor:

Rodrigo Oliveira

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