X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1999-03-02
2000-05-16
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Absorption
378207, G01N 2304
Patent
active
060647167
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 material phantom. An energy-selective multiple-film detector cassette containing at least two films is placed under the body and material phantom to receive the transmitted x-ray beam. The films in the cassette are developed and digitally scanned to produce sets of material phantom data and sets of bone data. The data sets are then processed with a feedforward neural network whereby to generate the indicated estimate of bone status, namely, bone-mineral density. In an alternative embodiment, an independent measurement is made of the total tissue thickness, and input to the neural network to achieve higher accuracy and precision.
REFERENCES:
patent: 3847141 (1974-11-01), Hoop
patent: 3848130 (1974-11-01), Macovski
patent: 3996471 (1976-12-01), Invention
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4513078 (1985-04-01), Sandrik et al.
patent: 4603428 (1986-07-01), Sandrik et al.
patent: 4754763 (1988-07-01), Doemland
patent: 4811373 (1989-03-01), Stein
patent: 5070248 (1991-12-01), Pesce
patent: 5122664 (1992-06-01), Ito et al.
patent: 5187731 (1993-02-01), Shimura
patent: 5259384 (1993-11-01), Kaufman et al.
patent: 5368044 (1994-11-01), Cain et al.
patent: 5426709 (1995-06-01), Yoshida et al.
patent: 5651363 (1997-07-01), Kaufman et al.
patent: 5687210 (1997-11-01), Maitrejean et al.
patent: 5917877 (1999-06-01), Chiabrera et al.
Cosman, F., et al., "Radiographic Absorpitometry: A Simple Method for Determination of Bone Mass", Osteoporosis Int. (1991) 2:34, no month.
"Ability of Four Different Techniques of Measuring Bone Mass to Diagnose Vertebral Fractures in Postmenopausal Women", Susan M. Ott, R.F. Kilcoyne, and Charles H. Chestnut III, Journal of Bone and Mineral Research, vol. 2, No. 3, 1987, pp. 201-210.
Chiabrera Alessandro
Kaufman Jonathan J.
Siffert Robert S.
CyberLogic, Inc.
Porta David P.
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