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Proceedings Paper

Neural-network diagnostic algorithm and smart sensor
Author(s): Michele Ruggiero Banish; Roland B. Anderson; Heggere S. Ranganath; Brian Jones; James C. Kirsch
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Paper Abstract

Digital image interpretation is the basis of medical diagnoses. Through extensive review of patient data, an algorithm was developed to identify features of diagnostic importance in radiological images. The algorithm is generally applicable. Results from cardiac, lung, and military imagery are reported. The algorithm uses a pulse coupled neural network. It is this neural network that is fabricated on a custom CMOS chip. Each neuron of the pulse coupled neural network accepts an external optical input. The optical input is accomplished by a photo-detector. The neurons communicate laterally through a voltage grid. The communication strength, light sensitivity and other global parameters are under external control. A programmable logic array is on the camera board. Data for a specific neuron is accessed by an addressing scheme typically used for a CCD array. The individual neuron speed ranges from 10 to 50 Mhertz, and is fixed by a digital clock. The current chip is configured to operate at 300 Hertz. The chip logic is a hybrid of analog and digital circuitry to minimize the neuron size, maximize the number of neurons at a fixed cost. The hybrid circuitry also minimized the noise level in the chip.

Paper Details

Date Published: 3 May 2000
PDF: 11 pages
Proc. SPIE 3911, Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II, (3 May 2000); doi: 10.1117/12.384886
Show Author Affiliations
Michele Ruggiero Banish, SY Technology, Inc. (United States)
Roland B. Anderson, SY Technology, Inc. (United States)
Heggere S. Ranganath, Univ. of Alabama/Huntsville (United States)
Brian Jones, U.S. Army Aviation and Missile Command (United States)
James C. Kirsch, U.S. Army Aviation and Missile Command (United States)

Published in SPIE Proceedings Vol. 3911:
Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II
Tuan Vo-Dinh; Warren S. Grundfest M.D.; David A. Benaron M.D., Editor(s)

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