Ge Medical Systems Global Technology Company, LLC

Wingumd, Inc.

Jonathan Harman

Roy E Rand

Douglas P Boyd

Manabu Tokunaga

Roughly described, a method for estimating a size measurement of a subject feature on a body, for use with a photo, snapped by a camera which may be handheld. A reference marker is placed on the body near the subject feature. The reference marker includes concentric rings to help confirm its identify, and registration markings to determine the pose at which the photo was taken. The registration markings can be dots at vertices of a square. The method can include detecting concentric ellipses in the photo corresponding to the concentric circles, detecting the registration markings in the photo within a predetermined region which is outside the detected ellipses, geometrically transforming at least the subject feature in the photo based on the detected locations of the registration markings, calculating the scale of the photo based on the detected registration markings, and providing the transformed image and scale for the size measurement.

Object size detection with mobile device captured photo

A scanning electron beam computed tomographic system eliminates axial offset between target and detector by disposing the target, collimator, and detector such that active portions of the target and detector are always diametrically opposite each other. This result is achieved by providing a helical target, collimator, and detector, or by providing planar target, collimator, and detector components that are inclined relative to the vertical axis such that active portions of the target and detector are always diametrically opposite each other. Either configuration eliminates cone beam error and the necessity to correct for same. Further, the system can provide multi-slice scanning of an object that is in constant motion at a critical velocity, without having to interpolate data. Conventional helical scanning may still be undertaken. Detector elements can be disposed axially to improve signal/noise ratio and to produce a cone beam cancellation effect.

Electron beam computed tomographic scanner system with helical or tilted target, collimator and detector components to eliminate cone beam error and to scan continuously moving objects

Electron beam computed tomographic scanner system with helical or tilted target, collimator, and detector components to eliminate cone beam error and to scan continuously moving objects

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Pacifica, CA, United States of America

Jonathan Harman