High-speed electric tomography

Details High-speed electric tomography High-speed electric tomography

1993-10-06

1996-08-13

Smith, Ruth S.

Surgery

Truss

Pad

A61B 505

Patent

active

055446620

ABSTRACT:
An apparatus for electrical impedance imaging of a body includes an array of multiple electrodes. Each is connected to an adjustable amplitude precision current source of fixed frequency and an oversampling type digital voltmeter. The current amplitudes are set to produce a series of spatial current patterns, all orthogonal to each other, and each applied for only a short time interval while voltages are measured. The voltage and current values are used to create real and reactive impedance images of the interior of the body.

REFERENCES:
patent: 4291708 (1981-09-01), Frei et al.
patent: 4486835 (1984-12-01), Bai et al.
patent: 4920490 (1990-04-01), Isaacson
patent: 5272624 (1993-12-01), Gisser et al.

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