Optical tomography measurement device

An optical tomography measurement device comprising:

• an illumination component that illuminates excitation light onto a measurement subject from a light source disposed such that its optical axis is orthogonal to the body length direction of a living organism that is the measurement subject;
• a light reception component that is disposed such that its optical axis is in a measurement plane that is orthogonal to the body length direction of the measurement subject, and that receives fluorescent light generated from a fluorescent marking agent inside the measurement subject in response to the excitation light and emitted from a surface of the measurement subject;
• a change component that changes an illumination position of the excitation light onto the measurement subject by the illumination component to a reference position in the measurement plane and a first position and a second position disposed along the body length direction on either side of the reference position;
• an acquisition component that acquires reference data corresponding to the amount of fluorescent light received by the light reception component when the excitation light is illuminated onto the reference position, first data corresponding to the amount of fluorescent light received by the light reception component when the excitation light is illuminated onto the first illumination position, and second data corresponding to the amount of fluorescent light received by the light reception component when the excitation light is illuminated on the second illumination position;
• and
• a correction component that corrects the reference data so as to remove fluorescent light components emitted from the fluorescent marking agent outside of the measurement plane based on the first data and the second data.