Startup Company Profile
OCT Medical Imaging
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1280 Bison B9-504 |
Employees: 3 |
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Faculty Inventors:
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OCT Medical Imaging is working to market devices that record more detailed images than ultrasound. X-rays, CT scans, MRIs, PET scans, ultrasound.
Optical coherence tomography (OCT) uses coherence gating to select minimum backscattered photons for image reconstruction. Axial and lateral resolutions are determined by the source coherence length and numerical aperture of the sampling lens, respectively. While axial resolution can be improved using a broadband light source, there is a trade-off between lateral resolution and focusing depth because a beam with a long focal depth and narrow lateral width cannot be produced simultaneously - high lateral resolution requires a large numerical aperture while a long focal depth requires a small aperture. In high speed OCT imaging, where an axial scanning mode is used, a tightly-focused lens produces a micrometer sized spot at only one particular depth. The coherence gate quickly moves out of the shallow depth of focus during the scan. Although dynamic focusing compensation can be used to overcome this limitation, current lenses can only be used at low speeds, which limit their use to low frame rate OCT systems. In addition, dynamic focusing lenses are bulky and cannot be implemented in circumstances where physical space is restricted such as endoscopic OCT.
