Quantitative Ultrasound (QUS):

DXA measures bone density. Quantitative Ultrasound measures bone quality.

QUS measures how the ultrasound beam changes as it passes through the foot. This is called Broad Band Ultrasonic Attenuation (BUA). QUS also measures the speed at which the beam passes through bone. This is called Speed of Sound (or SOS).

QUS can tell us about the structure, elasticity, and strength of the bones. These factors are strongly co-related to bone density, and help predict the risk of fracture.

This technology usually takes an ultrasound scan of a person's heel. This is an easily accessible area that contains trabecular bone - the type of bone that changes with age like the lumbar spine does.

QUS is simple, quick and portable. It involves no exposure to radiation.

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