X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1989-03-07
1991-08-13
Westin, Edward P.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 54, 378146, 378207, G01B 1502
Patent
active
050401998
ABSTRACT:
An x-ray analysis apparatus with an x-ray tube which generates an x-ray beam to expose an object to be analyzed. The apparatus inserts into and removes from the x-ray beam a piece of reference material such that regions of the object are exposed both to the x-ray beam and the x-ray beam obstructed by the reference material. A detector detects x-rays passing through the object and produces an indication of the object based upon the signals produced by the exposure to the x-ray beam and upon the signals produced by the exposure to the x-ray beam obstructed by the reference material.
REFERENCES:
patent: Re28544 (1975-09-01), Stein et al.
patent: 3848130 (1974-11-01), Macovski
patent: 3944830 (1976-03-01), Dissing
patent: 3996471 (1976-12-01), Fletcher et al.
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4445226 (1984-04-01), Brody
patent: 4639943 (1987-01-01), Heinze et al.
patent: 4641331 (1987-03-01), Makino et al.
patent: 4811373 (1989-03-01), Stein
Jay A. Stein, Ph.D., "X-Ray Imaging with a Scanning Beam", Radiology, vol. 117, No. 3, pp. 713-716, Dec. 1975.
Sartoris et al., Bone Mineral Density in the Femoral Neck, American Journal of Roentgenology, vol. 144, p. 605 (1985).
Gustafsson et al., X-Ray Spectrophotometry for Bone-Mineral Determinations, Medical and Biomedical Engineering, p. 113 (Jan. 1974).
Cann, A Clinicians Guide to the Use of Bone Mass Measurements, University of California, pp. 1-36 (unpublished), no date.
Wahner et al., Non-Invasive Bone Mineral Measurements, Seminars in Nuclear Medicine, vol. XIII, No. 3, p. 282, Jul. 1983.
Dunn et al., Measurement of Bone Mineral Content in Human Vertebrae and Hip by Dual Proton Absorptiometry, Radiology, vol. 136, No. 2, p. 485 (Aug. 1980).
The "Norland Dichromatic Bone Densitometer" pamphlet, no date.
Lehmann et al., Generalized Image Combinations in Dual KVE Digital Radiography, Medical Physics, vol. 8, No. 5, p. 659, Sep./Oct. 1981.
Hologic Inc.
Porta David P.
Westin Edward P.
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