An imaging apparatus (1,100) comprising: an image producer configured to produce a medical image of an object; a display unit configured to display extraction information, an image of the object and a geometry image of the object which is changed according to geometry change information inputted by a user; an image information generator comprising: a storage unit in which reference information representing extraction information that is acquirable from the geometry image of the object is stored, wherein the reference information includes at least one of measurement information, landmark information, and Doppler information of the object; the image information generator configured to identify the object and to generate object information and to receive geometry change information for the image of the object; an extraction information calculator configured to extract reference information corresponding to the geometry image of the object changed according to the geometry change information from the storage unit, and generate extraction information corresponding to the geometry image of the object based on the extracted reference information, wherein after generating the extraction information the display unit displays the extraction information of the geometry image; characterized in that the extraction information calculator is configured to differentiate the extraction information according to the object information and the geometry change information. an image producer configured to produce a medical image of an object; a display unit configured to display extraction information, an image of the object and a geometry image of the object which is changed according to geometry change information inputted by a user; an image information generator comprising: a storage unit in which reference information representing extraction information that is acquirable from the geometry image of the object is stored, wherein the reference information includes at least one of measurement information, landmark information, and Doppler information of the object; the image information generator configured to identify the object and to generate object information and to receive geometry change information for the image of the object; an extraction information calculator configured to extract reference information corresponding to the geometry image of the object changed according to the geometry change information from the storage unit, and generate extraction information corresponding to the geometry image of the object based on the extracted reference information, wherein after generating the extraction information the display unit displays the extraction information of the geometry image; characterized in that the extraction information calculator is configured to differentiate the extraction information according to the object information and the geometry change information. a storage unit in which reference information representing extraction information that is acquirable from the geometry image of the object is stored, wherein the reference information includes at least one of measurement information, landmark information, and Doppler information of the object; the image information generator configured to identify the object and to generate object information and to receive geometry change information for the image of the object; an extraction information calculator configured to extract reference information corresponding to the geometry image of the object changed according to the geometry change information from the storage unit, and generate extraction information corresponding to the geometry image of the object based on the extracted reference information, wherein after generating the extraction information the display unit displays the extraction information of the geometry image; characterized in that the extraction information calculator is configured to differentiate the extraction information according to the object information and the geometry change information.