Apparatus for examining objects by means of penetrating radiatio

Details Apparatus for examining objects by means of penetrating radiatio Apparatus for examining objects by means of penetrating radiatio

1976-02-18

1978-01-17

Borchelt, Archie R.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

250360, 250510, G01N 2306

Patent

active

040694224

ABSTRACT:
In an apparatus for examining a body by means of penetrating radiation, a source directs a fan-shaped distribution of radiation through a slice of a patient. Detectors disposed on the other side of the body provide measurements of the intensity of the radiation for processing to derive a representation of absorption in the slice. Variations of the hardness of the radiation, with angular position in the fan-shaped distribution, can cause errors in the representation. Means are provided for compensating such variations of hardness; the means being in one example a wedge-shaped compensator inserted into the path of the radiation.

REFERENCES:
patent: 3134903 (1964-05-01), Fengler
patent: 3432657 (1969-03-01), Slavin
patent: 3737660 (1973-06-01), Ando et al.
patent: 3755672 (1973-08-01), Edholm et al.
patent: 3778614 (1973-12-01), Hounsfield

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