Method and apparatus for imaging in the presence of multiple hig

Details Method and apparatus for imaging in the presence of multiple hig Method and apparatus for imaging in the presence of multiple hig

1986-01-03

1987-11-24

Smith, Jerry

Boots, shoes, and leggings

378901, 358111, G06F 1542

Patent

active

047093331

ABSTRACT:
Method and apparatus for producing CT images in which localized regions ("rub-out" regions) of the original object are not reproduced in order to eliminate artifacts generated by objects within those regions. An operator defines rub-out regions encompassing objects to be removed. For each projection, the rub-out regions of the object are determined and then merged together. A baseline is calculated for each modified rub-out region. That information is then utilized to modify the projection set, in effect eliminating the object from the set. The modified projection set is then used to create a reconstructed image in the normal way.

REFERENCES:
patent: 4245244 (1981-01-01), Lijewski
patent: 4590558 (1986-05-01), Glover
patent: 4624007 (1986-11-01), Muranushi
"An Algorithm for Reduction of Metal Clip Artifacts in CT Constructions", Medical Physics, vol. 8, No. 6, Nov./Dec. 1981, G. H. Glover and N. J. Pelc.

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