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 language | English |
|---|---|
| Pages (from-to) | 129-141 |
| Number of pages | 13 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 2371 |
| DOIs | |
| Publication status | Published - 1 Mar 1995 |
| Externally published | Yes |
| Event | 5th International Photodynamic Association Biennial Meeting 1994 - Amelia Island, United States Duration: 21 Sep 1994 → 24 Sep 1994 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- ENT-malignancies
- Laser-induced fluorescence
- Oral ALA
- Protoporphyrin IX sensitization
- Tumour diagnostics
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