Whole-body dual-energy bone densitometry using a narrow angle fa

Details Whole-body dual-energy bone densitometry using a narrow angle fa Whole-body dual-energy bone densitometry using a narrow angle fa

1996-08-26

1999-03-23

Porta, David P.

X-ray or gamma ray systems or devices

Beam control

Scanner

378 62, 378196, G21K 510

Patent

active

RE0361623

ABSTRACT:
A scanning radiographic densitometer constructs a broad area, two dimensional projection image from a combination of a set of smaller fan beam scans by tilting the axis of each such smaller scan to construct an effective larger fan beam to reduce artifacts caused by height dependant overlap of the multiple fan beams. The data is projected to a non-planar image surface to eliminate local area distortion such as may cause error in density measurements and to permit some overlap without height sensitive effects.

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patent: 5432834 (1995-07-01), Gershman
Variable Resolution Fan-Beam CT Scanner For Peripheral Bone Evaluation, T. N. Hangartner et al., J. Comput Assist Tomogr, vol. 9, No. 3, 1985 no month.

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