Correction of CT images for truncated or incomplete projections

Details Correction of CT images for truncated or incomplete projections Correction of CT images for truncated or incomplete projections

2006-05-23

2006-05-23

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S901000

Reexamination Certificate

active

07050528

ABSTRACT:
A data consistency condition is derived for an array of attenuation values acquired with a fan-beam x-ray CT system. Using this data consistency condition, estimates of selected attenuation values can be calculated from the other attenuation values acquired during the scan. Such estimates reduce artifacts caused truncated data and by loss of data due to x-ray absorption.

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patent: 5533080 (1996-07-01), Pelc
patent: 6307909 (2001-10-01), Flohr et al.

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