Imaging systems

Details Imaging systems Imaging systems

1979-12-10

1982-07-20

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324312, G01N 2700

Patent

active

043408621

ABSTRACT:
In an NMR examining arrangement for producing an image of a region, generally a planar slice, of a body, it has been suggested to derive, from the resonance signals, a plurality of values, for strips in the slice, and then to convolve them with a convolution function to be suitable for back projection in the manner known for x-ray signals. In this invention it is proposed to modulate the resonance signals with a suitable function and then to Fourier transform them but not to convolve them. The modulation function is chosen to give after Fourier transformation the same effect as the convolution would have given. It is suggested that the modulation function should be the inverse Fourier Transform of the desired convolution function.

REFERENCES:
patent: 3778614 (1973-12-01), Hounsfield
patent: 3924129 (1975-12-01), Gordon
patent: 4070611 (1978-01-01), Ernst

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