Fluorescence diagnostics of head and neck cancer utilizing oral administration of δ-amino levulinic acid

  • K. Svanberg
  • , I. Wang
  • , R. Rydell
  • , Elner
  • , J. Wennerberg
  • , L. Pais Clemente
  • , E. Cardosa
  • , R. Pratas
  • , M. Pais Clemente
  • , S. Andersson-Engels
  • , S. Svanberg

Research output: Contribution to journalArticlepeer-review

Abstract

Tissue fluorescence measurements utilizing a point monitoring fluorosensor and a multi-colour fluorescence imaging system were performed in patients with various malignant tumours in the head and neck region. Also precancerous lesions were investigated and characterized by means of laser-induced fluorescence. Oral administration of low-dose 5-amino levulinic acid was used for the induction of protoporphyrin IX, which exhibits a strong fluorescence in the red wavelength region. The blue-green fluorescence emitted from the tissue natural chromophores was also utilized for tumour demarcation. By incorporating both Protoporphyrin IX and natural fluorescence in a tumour demarcation criterion a tumour demarcation with a tumour-to-normalsurrounding-tissue of about 5-10:1 contrast was acheived. Hypertrophic tissue did not exhibit tumour specific signals.

Original languageEnglish
Pages (from-to)129-141
Number of pages13
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2371
DOIs
Publication statusPublished - 1 Mar 1995
Externally publishedYes
Event5th International Photodynamic Association Biennial Meeting 1994 - Amelia Island, United States
Duration: 21 Sep 199424 Sep 1994

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • ENT-malignancies
  • Laser-induced fluorescence
  • Oral ALA
  • Protoporphyrin IX sensitization
  • Tumour diagnostics

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