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Udeneev AM, Kalyagina NA, Efendiev KT, Febenchukova AA, Kulichenko AM, Shiryaev AA, Pisareva TN, Linkov KG, Loshchenov MV. Cost-effective device for locating and circumscribing superficial tumors with contrast enhancement and fluorescence quantification. Photodiagnosis Photodyn Ther 2024; 45:103827. [PMID: 37797909 DOI: 10.1016/j.pdpdt.2023.103827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND 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. METHODS 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). RESULTS 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. CONCLUSIONS 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.
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Affiliation(s)
- A M Udeneev
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute MEPhI), Kashirskoye shosse 31, Moscow, 115409, Russia.
| | - N A Kalyagina
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute MEPhI), Kashirskoye shosse 31, Moscow, 115409, Russia; Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Str., 38, Moscow, 119991, Russia
| | - K T Efendiev
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute MEPhI), Kashirskoye shosse 31, Moscow, 115409, Russia; Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Str., 38, Moscow, 119991, Russia
| | - A A Febenchukova
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute MEPhI), Kashirskoye shosse 31, Moscow, 115409, Russia
| | - A M Kulichenko
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute MEPhI), Kashirskoye shosse 31, Moscow, 115409, Russia; Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Str., 38, Moscow, 119991, Russia
| | - A A Shiryaev
- Sechenov First Moscow State Medical University (Sechenov University), Ministry of Health of the Russian Federation, Department of Oncology, Radiotherapy and Reconstructive Surgery, University Clinical Hospital No.1, Bolshaya Pirogovskaya Str., 6, Moscow, 119435, Russia
| | - T N Pisareva
- Sechenov First Moscow State Medical University (Sechenov University), Ministry of Health of the Russian Federation, Department of Oncology, Radiotherapy and Reconstructive Surgery, University Clinical Hospital No.1, Bolshaya Pirogovskaya Str., 6, Moscow, 119435, Russia
| | - K G Linkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Str., 38, Moscow, 119991, Russia
| | - M V Loshchenov
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute MEPhI), Kashirskoye shosse 31, Moscow, 115409, Russia
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Woźniak Z, Trzeciakowski W, Chlebicka I, Ziółkowski P. Photodynamic diagnosis and photodynamic therapy in basal cell carcinoma using a novel laser light source. Photodiagnosis Photodyn Ther 2020; 31:101883. [PMID: 32574799 DOI: 10.1016/j.pdpdt.2020.101883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 11/30/2022]
Abstract
The aim of the present study was evaluating the effects and safety of new laser light source in PDD and PDT of basal cell carcinoma, BCC. The patients presented challenging localizations of the tumor or tumor combined with Gorlin syndrome. The PDD and PDT was performed in 50 patients with 54 histologically confirmed BCCs. The photosensitizer precursor, 5-ALA in cream, was used and the tumors were then illuminated, for PDD at 405 nm, and for PDT at 638 nm by means of newly designed laser. The novel feature of the laser was the combination of violet and red light in a single fiber output which enabled us to perform PDD and PDT alternatingly. The patients received one or more PDT sessions and they were observed during the next 36 months. The complete responses (CR, remissions) of the lesions were considered as no visible tumor after that time period. CR were observed in 87 % of the lesions in the entire group of patients. The results of present study show that the new laser allowing for both PDD and PDT was effective in producing satisfactory responses in the treatment of basal cell carcinoma.
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Affiliation(s)
| | - Witold Trzeciakowski
- Institute of High Pressure Physics of the Polish Academy of Sciences, Warsaw, Poland
| | - Iwona Chlebicka
- Department of Dermatology and Venerology, Wroclaw Medical University, Poland
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