Abstract: A bone data measurement method and apparatus, using an X-ray picture film having a picture of the sample bone and a picture of the standard matter having gradational steps therein, e.g., an aluminum step wedge, in which a cursory reading of the pictures of the X-ray film is implemented through detection of a quantity level of light that transmits through the X-ray picture film, determining the maximum quantity level ICmax of the transmitting light that transmits through the examined region of the picture of the sample bone, minutely reading the picture of the standard matter so as to find a thickness portion R.sub.1 of the standard matter, in which thickness portion a quantity level of transmitting light that transmits through the thickness portion is larger than and close to ICmax, and adjustably changing illuminating light for illuminating the X-ray picture film so that the quantity level I.sub.R1 of the transmitting light transmitting through the thickness portion R.sub.

Abstract: A bone-morphometric apparatus (20) is provided with a bone-morphometric data processing unit (32), including at least an image storage unit, such as an image memory (56), a microprocessor unit (60), and an input unit for entering reference points to specify an object measuring region. The data processing unit (32) stores either digital data of an X-ray image (22a) of a sample bone formed on an X-ray film (22) simultaneously with an image of a given standard block (11), obtained by illuminating the X-ray film with illuminating light from a light source (41) and automatically detecting the quantity of light transmitted through the image (22a) by an image detector (42), or digital data of a radiographic image of the sample bone obtained by a radiographic image-forming apparatus (90) in the image storage unit, so as to subject the stored digital data to arithmetic operation, to thereby obtain bone-morphometric data.