The OCT penlight: in-situ image guidance for microsurgery

John Galeotti; Areej Sajjad; Bo Wang; Larry Kagemann; Gaurav Shukla; Mel Siegel; Bing Wu; Roberta Klatzky; Gadi Wollstein; Joel S. Schuman; George Stetten

doi:10.1117/12.844411

23 February 2010 The OCT penlight: in-situ image guidance for microsurgery

John Galeotti, Areej Sajjad, Bo Wang, Larry Kagemann, Gaurav Shukla, Mel Siegel, Bing Wu, Roberta Klatzky, Gadi Wollstein, Joel S. Schuman, George Stetten

Author Affiliations +

Proceedings Volume 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling; 762502 (2010) https://doi.org/10.1117/12.844411
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

Abstract

We have developed a new image-based guidance system for microsurgery using optical coherence tomography (OCT), which presents a virtual image in its correct location inside the scanned tissue. Applications include surgery of the cornea, skin, and other surfaces below which shallow targets may advantageously be displayed for the naked eye or low-power magnification by a surgical microscope or loupes (magnifying eyewear). OCT provides real-time highresolution (3 micron) images at video rates within a two or more millimeter axial range in soft tissue, and is therefore suitable for guidance to various shallow targets such as Schlemm's canal in the eye (for treating Glaucoma) or skin tumors. A series of prototypes of the "OCT penlight" have produced virtual images with sufficient resolution and intensity to be useful under magnification, while the geometrical arrangement between the OCT scanner and display optics (including a half-silvered mirror) permits sufficient surgical access. The two prototypes constructed thus far have used, respectively, a miniature organic light emitting diode (OLED) display and a reflective liquid crystal on silicon (LCoS) display. The OLED has the advantage of relative simplicity, satisfactory resolution (15 micron), and color capability, whereas the LCoS can produce an image with much higher intensity and superior resolution (12 micron), although it is monochromatic and more complicated optically. Intensity is a crucial limiting factor, since light flux is greatly diminished with increasing magnification, thus favoring the LCoS as the more practical system.

Citation Download Citation

John Galeotti, Areej Sajjad, Bo Wang, Larry Kagemann, Gaurav Shukla, Mel Siegel, Bing Wu, Roberta Klatzky, Gadi Wollstein, Joel S. Schuman, and George Stetten "The OCT penlight: in-situ image guidance for microsurgery", Proc. SPIE 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling, 762502 (23 February 2010); https://doi.org/10.1117/12.844411

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available