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F.Musumeci
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- Spontaneous Emission
- Photoinduced Emission
Spontaneous photon emission from human tissue samples was measured; the aim of measurements was to establish the existence of the ultraweak radiation, to measure it and to exploit the possibility of discriminating the tumour from normal tissues.
From our measurements it results that all the normal samples emitted light with negligible intensity, whereas the tumour samples emitted light with an intensity which could be as high as 1400 photons/cm min.
The samples belonging to the sub-set of non-tumour tissues have an emission rate lower than 40 photons/cm min, with an average value of 22 ± 6 photons/cm min.
On the other hand, the samples belonging to the sub-set of tumour tissues showed a much wider distribution of emission rates. The average value was 300 ± 90 photons/cm min.
The results indicate that the two sub-sets have different populations and by using standard statistical methods it is possible to show that this conclusion have a reliability of 99%.
The second series of measurements was performed on the radiation emitted from tissues after the stimulation with a light source.
The analysis of the results obtained shows that the time decreasing of the photoinduced emission of all the samples, calculated by subtracting the relative photoinduced emission of the chamber, is well described by a simple hyperbolic decay .
It seems that some of the parameters of the decay should be suitable to discriminate tumour samples from normal ones .
1) F. Grasso, C. Grillo, F. Musumeci, A. Triglia, G. Rodolico, F. Cammisuli, C. Rinzivillo, G. Fragati, A. Santuccio, M. Rodolico"Photon emission from normal and tumor human tissues" Experientia, 48 (1992) 112) F. Musumeci, A. Triglia, F. Grasso"Experimental evidence on ultraweak photon emission from normal and tumor human tissues"Recent Advances in Biophoton Research, F.A. Popp, K.H. Li and Q. Gu Eds, World Scientific, Singapore (1992) 307-326
3) F. Grasso, F. Musumeci, A. Triglia, G. Rodolico, F. Cammisuli, C. Rinzivillo, G. Fragati, A. Santuccio, M. Rodolico"Spontaneous and photoinduced photon emission from normal and tumor human tissues" Physica Medica, 9 (1993) 143-149
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