Split filter CT

Details Split filter CT Split filter CT

1979-06-08

1981-03-10

Smith, Alfred E.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

250510, A61B 600

Patent

active

042556643

ABSTRACT:
An improved computer assisted tomographic scanner is disclosed. The scanner includes a source of X-radiation and an array of detectors for determining X-ray intensity once that radiation has passed through a patient. The source emits a spread of radiation which is filtered to comprise a spread of two distinct energy ranges before the radiation reaches the patient. This filtering produces multiple intensity readings for a given X-ray path: thereby allowing imaging electronics within the scanner to reduce chromatic artifacts and provide electron density and atomic number mappings to the diagnostician.

REFERENCES:
patent: 3971948 (1976-07-01), Pfeiler et al.
McCullough, E. C., "Photon Attenuation in Computed Tomography", Medical Physics, vol. 2, No. 6, 1975.
Alvarez et al., "Energy-Selective Reconstructions in X-Ray Computerized Tomography", Phys. Med. Biol., vol. 21, No. 5, 1976.

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