Circuit for signal data obtained from an axial tomographic scann

Details Circuit for signal data obtained from an axial tomographic scann Circuit for signal data obtained from an axial tomographic scann

1975-09-02

1977-07-26

Willis, Davis L.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

G01N 2134

Patent

active

040385515

ABSTRACT:
A circuit is disclosed for operating upon output signals indicative of the absorption suffered by penetrating radiation on traversing respective beam paths through a substantially planar section of a body under examination to effect a form of convolution of said signals as described in U.S. Pat. No. 3,924,124. The output signals are applied in time sequence to the circuit and each signal is arranged to traverse the circuit and return to the input thereof in time to be added to the next signal in the sequence. In traversing the circuit, however, a signal is multiplied by a factor less than unity; thus the component of a signal circulating in the circuit, as added to successive signals in the sequence, is progressively reduced.

REFERENCES:
patent: 3778614 (1973-12-01), Hounsfield

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