X-ray bone densitometry

Details X-ray bone densitometry X-ray bone densitometry

1994-11-25

1999-12-28

Porta, David P.

X-ray or gamma ray systems or devices

Source support

Including object support or positioning

378146, G21K 510

Patent

active

060091479

ABSTRACT:
A method of calibrating an ultrasound bone analysis apparatus having a pair of transducer assemblies. Each transducer assembly has a transducer and a coupling pad, and is movable relative to the other so that a face of each pad can be moved to a position in which they mutually contact and to a position where the faces contact body parts. The method according to the present application includes transmitting an ultrasound signal from one transducer and receiving a signal corresponding to the transmitted ultrasound signal through the other transducer when the transducer assemblies are in the first position and the second position. A time for the ultrasound signal to pass through the body part is determined, and a width of the body part based on positions of the transducers is determined. Then, using the time and width values a speed of sound of the ultrasound signal passing through the body part with squish compensation is calculated.

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