Intraoperative on-spot abnormal tissue detection

An on-spot abnormal tissue detection system comprising:

• a light source;
• a housing;
• a light fiber connected to the light source that carries light from the light source into the housing;
• a collimating lens positioned inside the housing to receive the light carried by the light fiber;
• one or more beam combining mirrors positioned inside the housing in a light path from the collimating lens, the one or more beam combining mirrors reflecting light below a particular wavelength and transmitting light above the particular wavelength;
• one or more focusing optic lenses positioned inside the housing in the light path from the one or more beam combining mirrors, the one or more focusing optic lenses focusing the transmitted light from the one or more beam combining mirrors onto a target area;
• one or more achromatic doublet lenses positioned inside the housing that focus each wavelength of light reflected from the target area;
• a spectrometer;
• a fiber optic cable that carries light from the one or more achromatic doublet lenses to the spectrometer;
• and
• a computing system comprising a processor, storage, and instructions stored on the storage that when executed by the processor, cause the computing system to:
• receive wavelength intensity pairs for one or more spot locations of the target area from the spectrometer;
• determine a standard deviation and variance measurement of the wavelength intensity pairs for the one or more spot locations of the target area from the spectrometer;
• determine whether tissue for the one or more spot locations of the target area is a tissue type of a tumor or normal tissue based on the standard deviation and variance measurement of the wavelength intensity pairs;
• and
• send the determination of whether the tissue for the one or more spot locations of the target area is a tissue type of a tumor or normal tissue to a display.