Stock Photo: BONE DENSITOMETRY EXAMINATION. BONE DENSITOMETRY EXAMINATION Photo essay from Saint Louis´ hospital in Paris, France. Osteodensitometry is a radiological examination enabling to measure the bone mineral density. The measurement is done in back layout position without any preparation neither injection and lasts only 10 minutes or so. This examination is prescribed in the framework of osteoporosis screening or during a follow_up of a prolonged corticotherapy.