Handheld common-path swept-source optical coherence tomography angiography.
Opt Lett
; 48(15): 3913-3916, 2023 Aug 01.
Article
en En
| MEDLINE
| ID: mdl-37527081
ABSTRACT
This study develops a handheld optical coherence tomography angiography (OCTA) system that uses a high-speed (200 kHz) swept laser with a dual-reference common-path configuration for stable and fast imaging. The common-path design automatically avoids polarization and dispersion mismatches by using one circulator as the primary system element, ensuring a cost-effective and compact design for handheld probe use. With its stable envelope (i.e., sub-µm shifts) and phase variation (corresponding to nm changes in axial displacement), the minimum detectable flow velocity is â¼ 0.08 mm/s in our experiment, which gives the common-path setup a high potential for application in a handheld OCTA system for clinical skin screening. In vivo skin structures and microvasculature networks on the dorsum of the hand and cheek of a healthy human are imaged successfully.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Angiografía
/
Tomografía de Coherencia Óptica
Límite:
Humans
Idioma:
En
Año:
2023
Tipo del documento:
Article