X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1982-12-21
1984-07-03
Smith, Alfred E.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
364414, 378 18, A61B 600
Patent
active
044583583
ABSTRACT:
A reference detector device for a multidetector tomodensitometer comprises several reference detectors. It also comprises filters reproducing the most current objects as regards X-ray attenuation. Each reference detector is associated with one of the filters. A reference value, at a given instant, is obtained by a combination of the values detected at the same instant on different reference detectors.
REFERENCES:
patent: 3919552 (1975-11-01), Hounsfield
patent: 3940625 (1976-02-01), Hounsfield
patent: 4124799 (1978-11-01), Schittenhelm
"Thomson-CSF"
Grigsby T. N.
Smith Alfred E.
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