Seminar: “Ultra-Fast Real-Time Optical Coherence Tomography Guided Microsurgery” – Jin U. Kang
Friday, August 5, 2011 / 11:00am-12:00pm
Jin U. Kang
Department of Electrical and Computer Engineering,
Johns Hopkins University
This Optical coherence tomography (OCT) has become a high-resolution and versatile tomographic imaging modality in recent years for a wide range of applications such as ophthalmology, cardiology, and neurology, just to name a few [1,2]. The traditional method of OCT sensing is based on time domain; however, due to superior imaging speed and higher sensitivity, Fourier domain OCT (FD OCT) is gradually supplanting time domain OCT (TD OCT) in most applications . We have been developing spectral domain-based FDOCT (SD OCT), one subcategory of FD OCT, for guided microsurgical applications [4-7]. Our research effort is directed at providing microsurgeons with OCT-based real-time, high-resolution 4-D visualization that will enhance their ability to achieve surgical objectives, diminish surgical risk, and improve outcomes [5, 6]. Compared to other image-guiding modalities such as MRI, CT, and ultrasound, OCT is more compact and portable, allowing for integration with surgical tools. In this talk I will discuss challenges in achieving high resolution (~1 micron), high-speed (10 frames/s) functional 4-D SDOCT, along with various hardware and signal processing methods we have developed to overcome the challenges.
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