Image correction for computed tomography to remove crosstalk art

Details Image correction for computed tomography to remove crosstalk art Image correction for computed tomography to remove crosstalk art

1988-04-18

1990-01-30

Jablon, Clark A.

Boots, shoes, and leggings

A61B 602, G01N 2302

Patent

active

048977888

ABSTRACT:
A correction method and apparatus for Computed Tomography (CT) removes ring and streak artifacts from images by correcting for data contamination by crosstalk errors. Crosstalk coupling between all adjacent detectors can be measured using an off-center phantom to provide X-ray flux having a changing gradient profile from view to view across the detector array of the CT apparatus. Correction factors are found that will remove crosstalk contamination from subsequently measured imaging data.

REFERENCES:
patent: 4670840 (1987-06-01), Freundlich
Rawlins, T. G. R. et al., "Microprocessor Crosstalk Correction in Multiple-Detector Gamma Counters", Phys. Med. & Biol. (GB), vol. 26, No. 3, May 1981, 425-34.

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