X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1997-09-30
1999-05-04
Bruce, David Vernon
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378901, A61B 603
Patent
active
059011955
ABSTRACT:
A two-step 3D Radon inversion processor for processing Radon data on a set of vertically oriented co-axial .phi.-planes that partition Radon space, wherein each of the .phi.-planes is sampled during the processing so as to have its own independent local Radon origin. In accordance with further principles of the present invention, a 3D Radon data generator generates Radon data on a set of vertically oriented co-axial .phi.-planes that partition Radon space, wherein each of the .phi.-planes is sampled so as to have its own independent local Radon origin, and a two-step 3D Radon inversion processor independently processes each of the .phi.-planes. Any shift of the local Radon origins with respect to a global coordinate system is compensated for during the 3D Radon inversion processing. Compensation for the origin shift may be made during or after a first step of the Radon inversion processing.
REFERENCES:
patent: 5257183 (1993-10-01), Tam
patent: 5365560 (1994-11-01), Tam
"Zeugmatography By Reconstruction From Projections", Lauterbur et al., IEEE Transactions on Nuclear Science, vol. NS-27, No. 3, Jun. 1980, pp. 1227-1231.
Samarasekera Supun
Sauer Frank
Tam Kwok
Bruce David Vernon
Edelman Lawrence C.
Siemens Corporate Research Inc.
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