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Software balancing of multiple detectors during CT scanning
Author(s) -
Erdos John,
Abele Manlio
Publication year - 1980
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.594656
Subject(s) - medical physics , detector , medical imaging , software , nuclear medicine , computer science , dosimetry , computed tomography , physics , medicine , optics , radiology , artificial intelligence , programming language
The general requirements for balancing of detectors in a multiple detector CT scanner are discussed, and the specific requirements for software balancing using data acquired within the body section during the scan are outlned. A particular technique which can be implemented in a scanner employing a simultaneous translation and rotation of the source/detector package is presented. The technique produces an exact balancing of offset and gain factors, to within accuracy limits imposed by the statistical uncertainty due to noise in the measurements. However, the technique admits a redundancy of solutions with allows the statistical sample to be expanded to include virtually all data acquired during the scan, thereby suppressing detector imbalance artifacts to the same level as overall quantum noise in the image.