A breast measurement apparatus 1 comprises a receptacle 3 for surrounding a breast B a plurality of optical fibers 11 for irradiating the breast B with examination light and detecting transmitted scattered light from the breast B an inner image generation unit 53 for generating an optical CT image concerning the breast B according to a detection signal of the transmitted scattered light an ultrasonic probe 21, arranged so as to face the inside of the receptacle 3, for scanning the breast B with an ultrasonic wave and receiving a reflected wave from the breast B an image generation unit 24 for generating an ultrasonic image concerning the breast B according to the reflected wave and a mechanism for injecting and discharging a liquid interface agent I into and from the inside of the receptacle 3. This makes it possible to acquire an ultrasonic image and an optical CT image under the same measurement condition.
