Plain x-ray bone densitometry apparatus and method

Details Plain x-ray bone densitometry apparatus and method Plain x-ray bone densitometry apparatus and method

1997-09-05

1999-06-29

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378207, G01N 2304

Patent

active

059178779

ABSTRACT:
Non-invasive quantitative plain radiographic evaluation of bone in a bony locale of a body is performed by subjecting the bony locale to a broadband collimated x-ray beam having energy in the range of about 20 keV to 150 keV. Alongside the bony locale is a multiple-material phantom containing at least two distinct materials. An energy-selective multiple-film detector cassette containing at least two films is placed under the body and multiple-material phantom to receive the transmitted x-ray beam. The films in the cassette are developed and digitally scanned to produce sets of multiple-material phantom data and sets of bone data. The data sets are then processed with a nonlinear algorithm whereby to generate the indicated estimate of bone status, namely, bone-mineral density.

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