Method and Apparatus For Capturing Images of a Medical Subject With White Light and Fluorescent Light

An image capture system for capturing an image of a medical object in reemitted and/or reflected illumination light and for capturing an image of the medical object in fluorescence light generated by protoporphyrin and for capturing an image of the medical object in fluorescence light generated by indocyanine green, comprising:

• an image capture apparatus comprising a first image sensor for capturing blue, green and red light;
• a second image sensor for capturing fluorescence light from protoporphyrin and indocyanine green;
• a beam splitter for guiding light which emanates from the object and has a wavelength shorter than a predetermined threshold wavelength λ0 within the red spectral range to the first image sensor and for guiding light which emanates from the object and has a wavelength longer than the predetermined threshold wavelength λ0 to the second image sensor;
• and a filter arranged upstream of the second image sensor in the light path, for partial, extensive, or complete suppression of light at a wavelength suitable for exciting fluorescence of indocyanine green;
• and
• a light-source device for alternately or simultaneously generating illumination light in the blue, green and red wavelength range, first excitation light for exciting the fluorescence of protoporphyrin and second excitation light for exciting the fluorescence of indocyanine green.

A method for capturing an image of a medical object in reemitted and/or reflected illumination light and for capturing an image of the medical object in fluorescence light generated by protoporphyrin and for capturing an image of the medical object in fluorescence light generated by indocyanine green, comprising the steps of:

• irradiating the medical object with an illumination light in the blue, green and red spectral range;
• irradiating the medical object with a first excitation light for exciting fluorescence of protoporphyrin;
• irradiating the medical object with a second excitation light for exciting fluorescence of indocyanine green;
• capturing a color image of the medical object in the blue, green and red spectral range by means of a first image sensor;
• and
• capturing a fluorescence image of the medical object in the red and infrared spectral range by means of a second image sensor,
• wherein reemitted and/or reflected second excitation light is not captured or only partly captured by the second image sensor.