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Biomedical subjects

B Macdonald

Publications and source records attributed to B Macdonald.

4 recordsLinked to original sources

Reconstruction of the Fresnel-coded gamma camera images by digital computer.

An algorithm for the digital reconstruction of the Fresnel-coded gamma camera image consists of the spatial Fourier transform of the hologram after applying a quadratic phase shift. Background subtraction is implemented by use of positive and negative zone plates. Tomographic planes are reconstructed in 27 sec from a single zone-plate shadow image by successively varying a parameter in the reconstruction algorithm on a small computer system.

Diagnosis, Computer-Assisted