H - Electricity – 05 – G
Patent
H - Electricity
05
G
358/11.1
H05G 1/00 (2006.01) A61B 6/03 (2006.01)
Patent
CA 1074460
ABSTRACT: In third-generation transversal tomography scanners, where the total body slice to be examined is irradiated by a flat, fan-shaped radiation beam, the probability that a detector which measures part of the radiation in the radiation beam becomes defective is very high. This failure causes artefacts in the reconstruction of the absorption distribution of the slice of the body, said artefacts having an adverse effect on the evaluation of the image by the radiologist. The invention ensures that a defective detector is identified (for example, by com- parison of the measuring values supplied by each detector with the measuring values of adjacent detectors), the measuring value of a detector which has been identified as being defective being replaced by a correction value which can be formed by interpolation of measuring values obtained along neighbouring paths.
280852
Wagner Wolfgang
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