Human: I'm going to the doctor next week to have a bone density test done. What is this test? Assistant: 
The bone densitometry test is used to measure the amount of bone mass in your body. It is used to diagnose osteoporosis and other diseases that affect bones, such as osteopenia and osteogenesis imperfecta. The test measures how much bone mineral content you have in your body, which can help doctors determine if you are at risk for these conditions.