A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Design of a radial multi-offset detection pattern for in vivo phase contrast imaging of the inner retina in humans




TekijätGofas-Salas E, Rui YH, Mece P, Zhang M, Snyder VC, Vienola KV, Lee DMW, Sahel JA, Grieve K, Rossi EA

KustantajaOptica

Julkaisuvuosi2022

JournalBiomedical Optics Express

Tietokannassa oleva lehden nimiBIOMEDICAL OPTICS EXPRESS

Lehden akronyymiBiomed. Opt. Express

Artikkelin numero1

Vuosikerta13

Aloitussivu117

Lopetussivu132

Sivujen määrä16

ISSN2156-7085

DOIhttps://doi.org/10.1364/BOE.441808

Verkko-osoitehttps://opg.optica.org/boe/fulltext.cfm?uri=boe-13-1-117&id=465651


Tiivistelmä

Previous work has shown that multi-offset detection in adaptive optics scanning laser ophthalmoscopy (AOSLO) can be used to image transparent cells such as retinal ganglion cells (RGCs) in monkeys and humans. Though imaging in anesthetized monkeys with high light levels produced high contrast images of RGCs, images from humans failed to reach the same contrast due to several drawbacks in the previous dual-wavelength multi-offset approach. Our aim here was to design and build a multi-offset detection pattern for humans at safe light levels that could reveal transparent cells in the retinal ganglion cell layer with a contrast and acquisition time approaching results only previously obtained in monkeys. Here, we present a new single-wavelength solution that allows for increased light power and eliminates problematic chromatic aberrations. Then, we demonstrate that a radial multi-offset detection pattern with an offset distance of 8-10 Airy Disk Diameter (ADD) is optimal to detect photons multiply scattered in all directions from weakly reflective retinal cells thereby enhancing their contrast. This new setup and image processing pipeline led to improved imaging of inner retinal cells, including the first images of microglia with multi-offset imaging in AOSLO.



Last updated on 2024-26-11 at 15:54