Boots – shoes – and leggings
Patent
1987-05-22
1989-06-13
Jablon, Clark A.
Boots, shoes, and leggings
378 87, G01T 1161
Patent
active
048398080
ABSTRACT:
A system for removing the effects of Compton scattering in systems such as tomographic scanning and radioisotope imaging arrangements, which detect gamma rays, utilizes the smoothness of the Compton component over the image to reduce computing time. Data responsive to energy states of the photons which are detected are received and values corresponding thereto are stored in at least one memory location. In some embodiments, where imaging is the ultimate function of the gamma ray detection system, the data correspond to predetermined image grid points. Also, the data which is stored is processed so as to be separated into a first data set corresponding to unscattered ones of the detected photons and a second data set corresponding to scattered ones of the detected photons. Such processing utilizes least squares fitting analysis, such as the known Golub method. The first data set is summed within specified limits, for determining a number of the unscattered ones of the detected photons. A scatter free image can then be formed from this data set.
REFERENCES:
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4149081 (1979-04-01), Seppi
Clinthorne Neal H.
Koral Kenneth F.
Rogers W. Leslie
Jablon Clark A.
The University of Michigan
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