Optical Frequency-Domain Imaging

Optical frequency-domain imaging or OFDI, is a parallel processing medical imaging method developed at the end of 2008, by Massachusetts General Hospital researchers. It uses a constantly rotating laser tip that continually modulates its wavelength, to pass through the body, and collect data on how each wavelength is reflected back.

OFDI has 1024 signals on different wavelengths being transmitted at any time, using multiple lasers to build up in parallel, images of significant sections of the body in parallel, reducing the nose created by moving red blood cells.

The data is then used to create interactive 3D environments, modelled on parts of a living body, allowing medical staff and researchers to fly through individual capillaries or cell clusters, analysing blood flow routes and fat deposits.

Below, we offer a selection of links from our resource databases which may match this term.

OFDI Optical Frequency-Domain Imaging

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Ultrasensitive Imaging: Hunting Every Photon
As the demands for precise imaging in fields such as medicine, astronomy, and real-time machine vision in hostile environments continue to increase, so the demands placed on imaging equipment become ever more stringent. An imaging method based on Single Photon Avalanche Photodiodes (SPAD) offers the potential to ease this bottleneck greatly.

The Brain Unveiled
Technology Review's long, and in depth look at the rise of diffusion spectrum imaging, and how this new neural interface imaging technique is rapidly accelerating the study of both human and animal brains to an extent unparalleled by any previous imaging technique, even fMRI.

Brain Reading: Diffusion Spectrum Imaging
Diffusion spectrum imaging is a new technique at time of writing, which allows magnetic resonance brain imaging, at a much higher level of fidelity than fMRI permits.

Automated Calibration Method Developed for Optical Microscopes - and HMDs

An automated calibration method, designed for optical microscopes, may find a home in head mounted display units and heads-up augmented reality systems.

Using VR and Phased Imaging to Track Alzheimers Disease Progression in New Ways
In mid 2012, Swiss researchers turned the world of alzheimers plaque imaging on its head: by combining a phased imaging source and an integral VR model generator, for the first time ever we can now track the formation of Alzheimers plaques in real-time in living patients.

Resource List: Medical Imaging

AR based Medical imaging technologies really began to take off in the early 2000s. There are a growing range of holographic, projective, interactive gesture recognition tools available, which can really make training and diagnosis so much easier.

Brain Reading: fMRI
fMRI or functional magnetic resonance imaging, is one of the newest brain imaging technologies for the first decade of the 21st century. It is a basic form of Brain-Computer Interaction.

Vie MUD
Vie MUD was a Multi-User Domain (MUD) based off the DIKU MUD codebase. Vie spawned five versions, Vie 1-5. Each was publicly released, as a separate codebase to build a new MUD off of.

Ancient Greece
Four outstanding, public domain maps of ancient Greecian territories in jpeg format. Each map is highly detailed, and provides excellent information on the layout of countries in the ancient world.

RFID and the Brain
Radio frequency identification tags, and the human brain. They don't appear to have much in common, at first glance. Yet, there is a way to merge the two into one device, a procedure being pioneered by MicroTransponder, a Dallas-based start-up.

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