Dual-energy radiography process differentiating bone...

Land vehicles: animal draft appliances – Thill couplings – Resilient

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C378S054000, C378S005000

Reexamination Certificate

active

06857640

ABSTRACT:
This radiography process utilizes dual-energy rays and comprises, in order to differentiate bone, lean and fatty tissues at the same time, an improvement consisting in assessing the total length penetrated by each ray while correcting the errors which may be produced by internal gas pockets. One proceeds as follows: selection of certain rays which have not penetrated bone tissues; calculation of the thicknesses of lean and fatty tissues penetrated by these rays according to the two attenuations, the sum of these two thicknesses being the length of attenuation; estimation of the length of attenuation elsewhere, in particular by means of interpolations; and calculation of the thicknesses of the three categories of tissues penetrated according to this total length of attenuation and the two attenuations.

REFERENCES:
patent: 5155365 (1992-10-01), Cann et al.
patent: 5465284 (1995-11-01), Karellas
patent: 5917877 (1999-06-01), Chiabrera et al.
patent: 5949846 (1999-09-01), Stein et al.
patent: 6052433 (2000-04-01), Chao
patent: 6173034 (2001-01-01), Chao
patent: 6205348 (2001-03-01), Giger et al.
patent: 6282258 (2001-08-01), Stein et al.
patent: 6516045 (2003-02-01), Shepherd et al.
patent: 20030026385 (2003-02-01), Dinten et al.
patent: WO 0021441 (2000-04-01), None
Journal Phys. Med. Biol., vol. 39, “Theoretical and Experimental Limits of Triple Photon Energy Absorptiometry in the Measurement of Bone Mineral”,Kotzki et al., 1991, pp. 429-737.
Med. Phys., vol. 175 (5), “Effect of Nomineral Tissues on Measurement of Bone Mineral Content by Dual-Photon Absorptionmetry”,Sorenson et al., 1990, pp. 905-912.
Med. Biol., vol. 35 (7), “Dual-Photon Absorptiometry for Determination of Bone Mineral Content in the Calcaneus with Correction of Fat”,Jonson et al., 1990, pp. 961-969.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Dual-energy radiography process differentiating bone... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual-energy radiography process differentiating bone..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-energy radiography process differentiating bone... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3455187

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.