| 摘要 |
Imaging apparatus for representing an image of concentration ratios between a first and a second substance in a region of interest of an object, with different measuring values being represented with different colors and/or gray shades. The apparatus comprises a light source capable of irradiating the object with light, which light comprises at least three wavelengths lambda1, lambda2 and lambda3, lambda3 being an isobestic wavelength, lambda1 being a wavelength at which the first substance has a lower absorption than the second substance, and lambda2 being a wavelength at which the first substance has a higher absorption than the second substance. The apparatus further comprises detection means comprising a matrix of pixel detectors, for representing a virtually instantaneous image of the region of interest. |
