Fiber optic middle infrared evanescent wave spectroscopy for early detection of melanoma

Svetlana Basov, Max Platkov, Ilan Goldberg, Yair Dankner, Marcelo Weinstein, Andrey Goryachev, Yosef Raichlin, Eli Sprecher, Abraham Katzir

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Melanoma is responsible for most of the fatalities from skin cancer diseases. Yet, there is no reliable method for a noninvasive early detection of skin cancers. We developed a Fiber-optic Evanescent wave Spectroscopy (FEWS) method based on a Fourier Transform Mid-IR (FTIR) spectrometer and on U shaped silver halide (AgClBr) fibers that are highly transparent in the mid-IR. We measured suspicious lesions on patients, before their excision. The central part of the bent fiber touched the lesion and the mid-IR absorption of this area was measured in situ and in real time. As a background, the same measurement was performed on healthy nearby skin. All discomfort to the patient was avoided. The lesions were then examined by conventional means. Histopathology revealed 5 melanoma tumors out of 90 patients and clear and repeating spectral differences between background and lesion are seen in all patients. We continue to accumulate spectral data of melanoma and of other pathologies, for better statistics and for characterization of other types of skin cancer. It is hoped that this non-invasive method for an early detection and diagnosis of skin cancer will replace biopsy and revolutionize this field.

Original languageEnglish
Title of host publicationOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIX
EditorsIsrael Gannot, Israel Gannot
PublisherSPIE
ISBN (Electronic)9781510623866
DOIs
StatePublished - 2019
Externally publishedYes
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIX 2019 - San Francisco, United States
Duration: 2 Feb 20193 Feb 2019

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume10872
ISSN (Print)1605-7422

Conference

ConferenceOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIX 2019
Country/TerritoryUnited States
CitySan Francisco
Period2/02/193/02/19

Keywords

  • Evanescence spectroscopy
  • Melanoma
  • Sensing
  • Silver Halide fibers

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