Multiple masking imaging system

Details Multiple masking imaging system Multiple masking imaging system

1976-07-12

1978-02-21

Borchelt, Archie R.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250366, 250368, G01T 120

Patent

active

040754839

ABSTRACT:
An imaging system utilizing a scintillation camera for photographing subjects emitting gamma and X-radiation. Masks are sequentially positioned between the subject and the camera to produce a sequence of shadowgrams upon the face of the camera. Output signals of the camera are summed together to give an array of sum signals, the array of sum signals being Fourier transformed followed by a matched filtering by multiplication of the frequency terms by an array of factors utilized in generating the masks. Phase factors are applied to the camera output signals, either before the Fourier transformation or during the matched filtering, the phase factors identifying the masks utilized in producing the respective shadowgrams. An inverse Fourier transformation then results in an image of the subject.

REFERENCES:
patent: 3748470 (1973-07-01), Barrett
patent: 3916198 (1975-10-01), Coltman et al.
patent: 3961191 (1976-06-01), Stoner et al.

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