Traditionally,bone structure and bone mass are assessed by observing the rari-fied bone on standard x-ray films.However,small changes in bone mass cannot bedetected effectively.By the time loss of bone mass can be det...Traditionally,bone structure and bone mass are assessed by observing the rari-fied bone on standard x-ray films.However,small changes in bone mass cannot bedetected effectively.By the time loss of bone mass can be detected on the x-ray,thedisease is already in an advance stage.At least 30% of bone must be lost beforeproblems like osteoporosis can be diagnosed.展开更多
文摘Traditionally,bone structure and bone mass are assessed by observing the rari-fied bone on standard x-ray films.However,small changes in bone mass cannot bedetected effectively.By the time loss of bone mass can be detected on the x-ray,thedisease is already in an advance stage.At least 30% of bone must be lost beforeproblems like osteoporosis can be diagnosed.
