Wavelength and light-dose dependence in tumour phototheraphy with haematoporphyrin derivative
1985

Effectiveness of Green vs Red Light in Tumor Phototherapy

publication Evidence: moderate

Author Information

Author(s): J.C. van Gemert, M.C. Berenbaum, G.H.M. Gijsbers

Primary Institution: St Joseph Hospital, Eindhoven, The Netherlands

Hypothesis

Is green light more effective than red light in destroying thin tumors?

Conclusion

Green light may be more efficient than red light for treating thin tumors, requiring shorter illumination times.

Supporting Evidence

  • Green light is more efficient than red light for tumors up to 1.2 mm thick.
  • Red light requires a more complex and costly laser setup compared to green light.
  • Green light may allow for shorter treatment times for thin tumors.

Takeaway

This study found that using green light can be better for treating thin tumors than red light, which is usually used.

Methodology

The study compared the effectiveness of tumor phototherapy using different wavelengths of light (405 nm, 514.5 nm, and 630 nm) on tumors in mice.

Limitations

The study's findings may not fully extrapolate to human tumors due to differences in tumor characteristics and light penetration.

Participant Demographics

Mice (WAG-Rij rats and BALB/c female mice) were used in the experiments.

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