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Ergonomic handheld OCT angiography probe optimized for pediatric and supine imaging.

Publication ,  Journal Article
Viehland, C; Chen, X; Tran-Viet, D; Jackson-Atogi, M; Ortiz, P; Waterman, G; Vajzovic, L; Toth, CA; Izatt, JA
Published in: Biomed Opt Express
May 1, 2019

OCT angiography is a functional extension of OCT that allows for non-invasive imaging of retinal microvasculature. However, most current OCT angiography systems are tabletop systems that are typically used for imaging compliant, seated subjects. These systems cannot be readily applied for imaging important patient populations such as bedridden patients, patients undergoing surgery in the operating room, young children in the clinic, and infants in the intensive care nursery. In this manuscript, we describe the design and development of a non-contact, handheld probe optimized for OCT angiography that features a novel diverging light on the scanner optical design that provides improved optical performance over traditional OCT scanner designs. Unlike most handheld OCT probes, which are designed to be held by the side of the case or by a handle, the new probe was optimized for ergonomics of supine imaging where imagers prefer to hold the probe by the lens tube. The probe's design also includes an adjustable brace that gives the operator a point of contact closer to the center of mass of the probe, reducing the moment of inertia around the operator's fingers, facilitating stabilization, and reducing operator fatigue. The probe supports high-speed imaging using a 200 kHz swept source OCT engine, has a motorized stage that provides + 10 to -10 D refractive error correction and weighs 700g. We present initial handheld OCT angiography images from healthy adult volunteers, young children during exams under anesthesia, and non-sedated infants in the intensive care nursery. To the best of our knowledge, this represents the first reported use of handheld OCT angiography in non-sedated infants, and the first handheld OCT angiography images which show the clear delineation of key features of the retinal capillary complex including the foveal avascular zone, peripapillary vasculature, the superficial vascular complex, and the deep vascular complex.

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Published In

Biomed Opt Express

DOI

ISSN

2156-7085

Publication Date

May 1, 2019

Volume

10

Issue

5

Start / End Page

2623 / 2638

Location

United States

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4003 Biomedical engineering
  • 3212 Ophthalmology and optometry
  • 0912 Materials Engineering
  • 0205 Optical Physics
 

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Viehland, C., Chen, X., Tran-Viet, D., Jackson-Atogi, M., Ortiz, P., Waterman, G., … Izatt, J. A. (2019). Ergonomic handheld OCT angiography probe optimized for pediatric and supine imaging. Biomed Opt Express, 10(5), 2623–2638. https://doi.org/10.1364/BOE.10.002623
Viehland, Christian, Xi Chen, Du Tran-Viet, Moseph Jackson-Atogi, Pablo Ortiz, Gar Waterman, Lejla Vajzovic, Cynthia A. Toth, and Joseph A. Izatt. “Ergonomic handheld OCT angiography probe optimized for pediatric and supine imaging.Biomed Opt Express 10, no. 5 (May 1, 2019): 2623–38. https://doi.org/10.1364/BOE.10.002623.
Viehland C, Chen X, Tran-Viet D, Jackson-Atogi M, Ortiz P, Waterman G, et al. Ergonomic handheld OCT angiography probe optimized for pediatric and supine imaging. Biomed Opt Express. 2019 May 1;10(5):2623–38.
Viehland, Christian, et al. “Ergonomic handheld OCT angiography probe optimized for pediatric and supine imaging.Biomed Opt Express, vol. 10, no. 5, May 2019, pp. 2623–38. Pubmed, doi:10.1364/BOE.10.002623.
Viehland C, Chen X, Tran-Viet D, Jackson-Atogi M, Ortiz P, Waterman G, Vajzovic L, Toth CA, Izatt JA. Ergonomic handheld OCT angiography probe optimized for pediatric and supine imaging. Biomed Opt Express. 2019 May 1;10(5):2623–2638.
Journal cover image

Published In

Biomed Opt Express

DOI

ISSN

2156-7085

Publication Date

May 1, 2019

Volume

10

Issue

5

Start / End Page

2623 / 2638

Location

United States

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4003 Biomedical engineering
  • 3212 Ophthalmology and optometry
  • 0912 Materials Engineering
  • 0205 Optical Physics