autofluorescence changes
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2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Narine Muselimyan ◽  
Huda Asfour ◽  
Narine Sarvazyan

Abstract Radiofrequency ablation is a commonly used clinical procedure that destroys arrhythmogenic sources in patients suffering from atrial fibrillation and other types of cardiac arrhythmias. To improve the success of this procedure, new approaches for real-time visualization of ablation sites are being developed. One of these promising methods is hyperspectral imaging, an approach that detects lesions based on changes in the endogenous tissue autofluorescence profile. To facilitate the clinical implementation of this approach, we examined the key variables that can influence ablation-induced spectral changes, including the drop in myocardial NADH levels, the release of lipofuscin-like pigments, and the increase in diffuse reflectance of the cardiac muscle beneath the endocardial layer. Insights from these experiments suggested simpler algorithms that can be used to acquire and post-process the spectral information required to reveal the lesion sites. Our study is relevant to a growing number of multilayered clinical targets to which spectral approaches are being applied.


2020 ◽  
Vol 19 (7) ◽  
pp. 879-884
Author(s):  
Keiji Konagaya ◽  
Dimas Firmanda Al Riza ◽  
Yuichi Ogawa ◽  
Yasushi Kohno ◽  
Makoto Kuramoto ◽  
...  

We investigated the autofluorescence of tomato surface tissues during overripening. Microscopic images and fluorescence spectra of tissues were examined, revealing that the autofluorescence changes were related to the epidermis and the cuticle.


2018 ◽  
Vol 48 (6) ◽  
pp. 304-308 ◽  
Author(s):  
Pınar Bingöl Kızıltunç ◽  
Figen Şermet

2018 ◽  
Vol 651 ◽  
pp. 13-20 ◽  
Author(s):  
Tatiana N. Tikhonova ◽  
Nataliya R. Rovnyagina ◽  
Alexander Ya Zherebker ◽  
Nikolai N. Sluchanko ◽  
Anna A. Rubekina ◽  
...  

2015 ◽  
Vol 254 (8) ◽  
pp. 1473-1479 ◽  
Author(s):  
Alessandro Mantovani ◽  
Andrea Giani ◽  
Carl P. Herbort ◽  
Giovanni Staurenghi

Retina ◽  
2010 ◽  
Vol 30 (1) ◽  
pp. 42-50 ◽  
Author(s):  
STEVEN YEH ◽  
FARZIN FOROOGHIAN ◽  
LISA J. FAIA ◽  
ERIC D. WEICHEL ◽  
WAI T. WONG ◽  
...  

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