Abstract: An apparatus and method in which the amount of movement of a boundary in one or more dimensions on a dynamically movable structure or a series of sequential visual representations of said structure is measured. The boundary movement is measured by the degree of shiftable movement between light and dark areas. The motion may be analyzed and quantified in terms of linear motion or area change and an electrical analog of such motion is generated in format suitable for recordation by conventional reproducing or display mechanisms, as for example, a conventional chart recorder. In one embodiment, movement in one dimension, e.g. a linear dimension, is detected but not necessarily quantified. In another embodiment, the movement in the linear dimension is detected and measured so as to provide a quantification thereof. In a further embodiment the movement is measured in at least two dimensions to provide quantification of area changes.

Abstract: An apparatus and method for the detection of movement of body tissues and, more particularly, movements of segments of the heart muscle and method for a noninvasive technique for the detection of coronary and arterial abnormalities. The apparatus includes a probe, preferably in the form of a detector plate, utilizing electric field measurement for detection of movements of a nearby segment of the body tissue, as for example, a segment of the heart muscle. The detector plate is coupled to a variable-frequency oscillator and phase-lock system for measuring capacitive change used to shift the phase of the oscillator when the detector is placed with respect to a certain body tissue. The apparatus employs its own unique system of timing heart movement in that the detector is capable of sensing a signal having a low frequency component which provides information regarding tissue movement.

Abstract: An apparatus and method for the detection of movement of body tissues and, more particularly, movements of segments of the heart muscle and method for a noninvasive technique for the detection of coronary and arterial abnormalities. The apparatus includes a probe, preferably in the form of a detector plate, utilizing electric field measurement for detection of movements of a nearby segment of the body tissue, as for example, a segment of the heart muscle. The detector plate is coupled to a variable-frequency oscillator and phase-lock system for measuring capacitive change used to shift the phase of the oscillator when the detector is placed with respect to a certain body tissue. The apparatus employs its own unique system of timing heart movement in that the detector is capable of sensing a signal having a low frequency component which provides information regarding tissue movement.