A breast measurement apparatus comprises a receptacle for surrounding a breast a plurality of optical fibers for irradiating the breast with examination light and detecting transmitted scattered light from the breast an inner image generation unit for generating an optical CT image concerning the breast according to a detection signal of the transmitted scattered light an ultrasonic probe, arranged so as to face the inside of the receptacle, for scanning the breast with an ultrasonic wave and receiving a reflected wave from the breast an image generation unit for generating an ultrasonic image concerning the breast according to the reflected wave and a mechanism for injecting and discharging a liquid interface agent into and from the inside of the receptacle.
