Local atraumatic fixation of the intestinal wall in the real-time artefact-free structural and angiographic transserous OCT imaging

Ryabkov, M. G.; Sizov, M.A.; Shilyagin, Pavel A.; Peretyagin, P. V.; Bederina, Evgeniya; Moiseev, Alexander A.; Gelikonov, Grigory V.; Gladkova, Natalia D.; Kiseleva, Elena B.

doi:10.1109/iclo54117.2022.9839718

Cited by 1 publication

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The OCTA method is described in detail in [ 8 , 12 , 13 ]. A high-speed spectral multimodal optical coherence tomograph with an angiography mode (Institute of Applied Physics of RAS, Nizhny Novgorod, Russia) operating at a wavelength of 1310 nm, with a spectral width of 100 μm, and a power of 2 mW was used [ 34 , 35 ].…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Optical Coherence Tomography Angiography of the Intestine: How to Prevent Motion Artifacts in Open and Laparoscopic Surgery?

Ryabkov

Sizov

Bederina

et al. 2023

Life

View full text Add to dashboard Cite

(1) Introduction. The problem that limits the intraoperative use of OCTA for the intestinal circulation diagnostics is the low informative value of OCTA images containing too many motion artifacts. The aim of this study is to evaluate the efficiency and safety of the developed unit for the prevention of the appearance of motion artifacts in the OCTA images of the intestine in both open and laparoscopic surgery in the experiment; (2) Methods. A high-speed spectral-domain multimodal optical coherence tomograph (IAP RAS, Russia) operating at a wavelength of 1310 nm with a spectral width of 100 μm and a power of 2 mW was used. The developed unit was tested in two groups of experimental animals—on minipigs (group I, n = 10, open abdomen) and on rabbits (group II, n = 10, laparoscopy). Acute mesenteric ischemia was modeled and then 1 h later the small intestine underwent OCTA evaluation. A total of 400 OCTA images of the intact and ischemic small intestine were obtained and analyzed. The quality of the obtained OCTA images was evaluated based on the score proposed in 2020 by the group of Magnin M. (3) Results. Without stabilization, OCTA images of the intestine tissues were informative only in 32–44% of cases in open surgery and in 14–22% of cases in laparoscopic surgery. A vacuum bowel stabilizer with a pressure deficit of 22–25 mm Hg significantly reduced the number of motion artifacts. As a result, the proportion of informative OCTA images in open surgery increased up to 86.5% (Χ2 = 200.2, p = 0.001), and in laparoscopy up to 60% (Χ2 = 148.3, p = 0.001). (4) Conclusions. The used vacuum tissue stabilizer enabled a significant increase in the proportion of informative OCTA images by significantly reducing the motion artifacts.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Artifacts of movement on the intestinal OCTA are a consequence of peristalsis, transmission vibrations from the thoracic diaphragm, and the aorta. As a result of their appearance, the proportion of non-informative OCTA images in large animals (in the experiment) and in humans (in the clinic) reaches 50% [ 13 ].…”

Section: Introductionmentioning

confidence: 99%