Method for estimating the radiation scattered in a...

Details Method for estimating the radiation scattered in a... Method for estimating the radiation scattered in a...

2007-02-08

2009-02-24

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S207000, C378S901000

Reexamination Certificate

active

07496171

ABSTRACT:
The radiation scattered in a two-dimensional detector (2) by a radiation is estimated by subjecting the detector (2) to at least two irradiations by inserting an array (3) of separated absorbers placed at variable distances (L) from the detector (2), measuring the (scattered) radiation at the shadow spots (6) of the absorbers and interpolating elsewhere to provide continuous images of the scattered radiation, and by deducing parameters modelling a scattered radiation distribution function in the detector.

REFERENCES:
patent: 6594338 (2003-07-01), Darboux et al.
patent: 7031427 (2006-04-01), Dinten et al.
Robert A. Close, et al., “Regularization method for scatter-glare correction in fluoroscopic images”, Medical Physics, vol. 26, No. 9, Sep. 1999, pp. 1794-1801.
Yoshiki Kawata, et al., “3-D Image Reconstruction with Veiling Glare Correction to Improve the Contrast of 3-D Reconstructed Vascular Images”, IEEE Transactions of Nuclear Science, vol. 43, No. 1, Feb. 1996, pp. 304-309.

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