Method of quick back projection for computed tomography and impr

Details Method of quick back projection for computed tomography and impr Method of quick back projection for computed tomography and impr

1983-11-21

1986-06-03

Smith, Jerry

Boots, shoes, and leggings

364415, 358133, 358136, 378901, 378 21, G01T 116, H04N 532, G01N 2300, G06G 760

Patent

active

045933553

ABSTRACT:
Computer tomography employs quick back projection, allowing for example software based back projection in a minicomputer. From the line of sight absorption data which is normally taken for computed tomography, the apparatus generates additional data files of more limited resolution, the most limited resolution file has such resolution that software controlled back projection employed in the minicomputer can be completed in a period of time of one minute or less. Thereafter, the operator controls a cursor so that subsequent back projection, on files of higher resolution, employ only a subset of the available data to also limit the processing time.

REFERENCES:
patent: 3553676 (1971-01-01), Raciti
patent: 4189775 (1980-02-01), Inouye et al.
patent: 4245244 (1981-01-01), Lijewski et al.
patent: 4349739 (1982-09-01), Annis
patent: 4418345 (1983-11-01), Demke et al.

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