Персона: Лощенов, Максим Викторович
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Dual channel video platform for fluorescence diagnostics in augmented reality
Cost-effective device for locating and circumscribing superficial tumors with contrast enhancement and fluorescence quantification
Two Bispectral contrast enhancement approaches for the fluorescence diagnosis with chlorine-e6 and a wide field-of-view imaging system with fluorescence excitation at 405 nm and time-resolved background suppression were analyzed and compared. Two techniques for the contrast enhancement of a fluorescent video system (Red/Green (R/G) ratio and Red-Green (R-G)) with time-resolved background suppression for fluorescent diagnosis (FD) were tested in four patients with basal cell carcinoma (BCC). The results of both contrast enhancement methods were compared for the diagnostic efficiency for FD of BCC. Both techniques successfully determined the boundaries of the lesions and the fluorescence intensity. Both contrast enhancement modes have proven effective in identifying tumor borders in cases of low contrast in BCC FD with Ce6. While the Red/Green (R/G) mode provides sharper lesion borders, the Red minus Green (R-G) mode visualizes more fluorescent features and makes it easier to assess the lesion margins.
Intraoperative video-fluorescence navigation by PpIX and tissue saturation measurement during surgical resection of gastric malignant tumor
Fluorescence visualization of pathologies is a popular form of endoscopic diagnostics in medicine. Interest in fluorescence optical visualization consists in providing information on the fluorescent signal spatial distribution by the photosensitizer fluorescence, which has a selective accumulation in tumor. Together with this, the determination of tissue saturation makes possible to assess the adequate of blood supply to anastomosis during surgical operation. © 2022 IEEE.