Imaging peritoneal blood vessels through optical coherence tomography angiography for laparoscopic surgery.
J Biophotonics
; 17(1): e202300221, 2024 01.
Article
in En
| MEDLINE
| ID: mdl-37675626
ABSTRACT
Laparoscopic surgery presents challenges in identifying blood vessels due to lack of tactile feedback. The image-guided laparoscopic surgical tool (IGLaST) integrated with optical coherence tomography (OCT) has potential for in vivo blood vessel imaging; however, distinguishing vessels from surrounding tissue remains a challenge. In this study, we propose utilizing an inter-A-line intensity differentiation-based OCT angiography (OCTA) to improve visualization of blood vessels. By evaluating a tissue phantom with varying flow speeds, we optimized the system's blood flow imaging capabilities in terms of minimum detectable flow and contrast-to-noise ratio. In vivo experiments on rat and porcine models, successfully visualized previously unidentified blood vessels and concealed blood flows beneath the 1 mm depth peritoneum. Qualitative comparison of various OCTA algorithms indicated that the intensity differentiation-based algorithm performed best for our application. We believe that implementing IGLaST with OCTA can enhance surgical outcomes and reduce procedure time in laparoscopic surgeries.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Laparoscopy
/
Tomography, Optical Coherence
Type of study:
Qualitative_research
Limits:
Animals
Language:
En
Journal:
J Biophotonics
Year:
2024
Document type:
Article