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The dual channel FOMRI-II system is our leading edge noise cancelling system for MRI environments.
It combines two complementary Optoacoustics technologies into a single microphone housing: orthogonal and matched pressure gradient noise cancelling. In addition, it uses a powerful adaptive algorithm that is uniquely designed for two channel applications. Supports tight integration with existing MRI communication systems.
Optoacoustics’ dual channel FOMRI provides noise cancelling at on-axis (0, 180) and off-axis (90, 270) geometries using two complementary techniques.
"My co-investigator was equally impressed -- and he had even heard samples from the many files sent to us. We have more work to do...but this dramatically good performance makes it easier to go through all those stages."
-- Researcher,
Haskins Laboratories
Yale University
We offer three dual channel FOMRI configurations:
 Software based with analog and digital outputs
Hardware based with analog output and real-time DSP
Software and hardware based with all capabilities
Dual Channel Features
High-end microphone ideal for voice key applications
Combines two complementary noise cancelling
technologies
Eliminates EPI acoustic noise
Real-time adaptive noise canceling capability
Complete EMI/RFI immunity means no effect on
MR imaging
Stand-alone or integrated with existing MRI
communication systems
Supports both headset and flexible boom mounting
configurations for maximum patient comfort
Flexible signal outputs to medical hardware through
separate audio unit, recorder or PC
Enables optical fiber lengths from 20 to 100 meters
without signal loss
Includes OptiMRI PC-based software for advanced,
real-time speech enhancement, recording capa-
bilities and noise filtering in post-process mode
Accessories
Flexible microphone boom for attachment inside the
MRI core, with 10 meters of PVC coated optical fiber
Fitted disposable hygienic screens to remove pop
noise and enable exact FOMRI distance and
orientation to patient’s mouth (100 pack)
Zip coated fiber optical extension cord, at any
length
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FOMRI-III Upgrade
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