This is a comprehensive review of the two techniques of DXA and ultrasound. Both are used to measure bone density and thus predict the likelihood of osteoporosis or to assess its severity. The use of DXA has become universally accepted as a routine test of bone density in recent years. Many technical advances have occurred, particularly in the speed of examination, and these are fully described. This book provides the reader with a full explanation of the procedures involved in and the advantages of both DXA and ultrasound. It is essential reading for all clinicians and technicians involved in the diagnosis, treatment and study of bone disease.