Constant linear velocity spiral scanning for real time 4D OCT with visualization in virtual reality (Conference Presentation)

Jianwei D. Li; Oscar M. Carrasco-Zevallos; Moseph Jackson-Atogi; Mark Draelos; Christian Viehland; Brenton Keller; Ryan P. McNabb; Anthony N. Kuo; Joseph A. Izatt

doi:10.1117/12.2510352

13 March 2019 Constant linear velocity spiral scanning for real time 4D OCT with visualization in virtual reality (Conference Presentation)

Jianwei D. Li, Oscar M. Carrasco-Zevallos, Moseph Jackson-Atogi, Mark Draelos, Christian Viehland, Brenton Keller, Ryan P. McNabb, Anthony N. Kuo, Joseph A. Izatt

Author Affiliations +

Proceedings Volume 10858, Ophthalmic Technologies XXIX; 108580D (2019) https://doi.org/10.1117/12.2510352
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

High speed optical coherence tomography (OCT) systems with A-scan rates greater than 100 kHz allow for 4D visualizations in applications such as intraoperative OCT. However, traditional triangle or sawtooth waveforms used to drive galvanometer scanners often have frequency content that exceeds the bandwidth of the scanners, leading to distorted scans. Sinusoidal waveforms used to drive resonant scanners also lead to distorted scans due to the nonlinear scan velocity. Additionally, with raster scan patterns, the scanner needs time to stop and reverse direction in between B-scans, leading to significant acquisition dead time. Continuous scan patterns such as constant frequency spiral scanning or Lissajous scanning no longer have acquisition dead times, but suffer from non-uniform sampling across the imaging plane. We previously introduced constant linear velocity (CLV) spiral scanning as a novel scan pattern to maximize the data acquisition efficiency of high speed OCT systems. While this continuous scan pattern has no acquisition dead time and produces more uniform sampling compared to raster scanning, it required significant processing time. We introduce a processing pipeline implemented using CUDA in C++, which drastically reduces the amount of processing time needed, allowing real time visualization of 4D OCT data. To demonstrate its potential utility, we used CLV scanning with a 100 kHz swept-source OCT system to image retinas of enucleated porcine eyes undergoing mock ophthalmic surgery movements. Additionally, we rendered these volumes in virtual reality (VR) in real time, allowing for interactive manipulation and sectioning.

Conference Presentation

Citation Download Citation

Jianwei D. Li, Oscar M. Carrasco-Zevallos, Moseph Jackson-Atogi, Mark Draelos, Christian Viehland, Brenton Keller, Ryan P. McNabb, Anthony N. Kuo, and Joseph A. Izatt "Constant linear velocity spiral scanning for real time 4D OCT with visualization in virtual reality (Conference Presentation)", Proc. SPIE 10858, Ophthalmic Technologies XXIX, 108580D (13 March 2019); https://doi.org/10.1117/12.2510352

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Optical coherence tomography

Visualization

Virtual reality

Scanners

Raster graphics

Data acquisition

Retina

Show All Keywords

Keywords/Phrases

Search In:

Publication Years