Dual energy computerized tomography system

Details Dual energy computerized tomography system Dual energy computerized tomography system

1983-11-25

1992-05-19

Smith, Jerry

Boots, shoes, and leggings

36441321, 378 4, G06F 1542

Patent

active

051153947

ABSTRACT:
A dual energy method for CT scanning. Scanning is carried out at low and high energy levels, S.sub.2 and S.sub.1 respectively, each at a preselected dose level. Detected electronic signals (I.sub.2,I.sub.1) are digitized. A look up table is used to generate a pair of values from each pair of signals, one a photoelectric component and the other a Compton component. Each of these values are subjected to spatial filtering by a convolution filter function for each signal specially designed to increase the signal to noise ratio in the resultant combined image by exploiting the correlation in noise in the two values.

REFERENCES:
patent: 3859460 (1975-01-01), Westell
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4149081 (1979-04-01), Seppi
patent: 4247774 (1981-01-01), Brooks
patent: 4255664 (1981-03-01), Ruh et al.
patent: 4463375 (1984-07-01), Macovski
patent: 4464775 (1984-08-01), Yamagishi
Split Xenon Detector for Tomochemistry in Computed Tomography: Aaron Fenster Jour of Comp Assi Tomo. vol. 2 243-258 Jul. 1979.

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