Method and apparatus for examining a tissue using the spectral wing emission therefrom induced by visible to infrared photoexcitation

A method for diagnosing Alzheimer's disease in human brain tissues said method comprising the steps of:

• (a) photoexciting the native human tissue sample with substantially monochromatic light having a wavelength of at least 600 nm, whereby a far red and near infrared spectral wing emission is emitted from the native human tissue sample;
• and
• (b) using at least the far red and near infrared spectral wing emission emitted from the native human tissue sample to diagnose Alzheimer's disease in the native human tissue sample.

A method for diagnosing diabetes disease in native human tissues said method comprising the steps of:

• (a) photoexciting the native human tissue sample with substantially monochromatic light having a wavelength of at least 600 nm, whereby a far red and near infrared spectral wing emission is emitted from the native human tissue sample;
• and
• (b) using at least the far red and near infrared spectral wing emission emitted from the native human tissue sample to diagnose diabetes disease in the native human tissue sample.

A method for imaging a native tissue sample, said method comprising the steps of.

• (a) photoexciting the native tissue sample with substantially monochromatic light having a wavelength of at least 600 nm, whereby a far red and near infrared spectral wing emission is emitted from the native tissue sample;
• and
• (b) using at least the far red and near infrared spectral wing emission emitted from the native tissue sample to form an image of the native tissue sample.