X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1989-12-05
1992-09-22
Howell, Janice A.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 54, 378 99, 378 19, 378207, 2502521, 2503851, 25037009, 2503272, G01N 2304
Patent
active
051503948
ABSTRACT:
A dual photon bone densitometry apparatus uses an area scanning technique to minimize scanning time. X-rays are generated by an x-ray source which pass through a region of a subject's body, forming an x-ray image which reaches a scintillation screen. The scintillation screen reradiates a spatial intensity pattern corresponding to the x-ray image, the pattern being detected by a CCD sensor. The image is digitized by the sensor and processed by a controller before being stored as an electronic image. A dual energy x-ray source that delivers two different energy levels provides quantitative information regarding the object being imaged using standard dual photon absorptiometry techniques.
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Chu Kim-Kwok
Howell Janice A.
University of Massachusetts Medical School
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