METHOD AND APPARATUS FOR PHOTOGRAMMETRIC ORIENTATION OF ULTRASOUND IMAGES

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United States of America Patent

APP PUB NO 20020198452A1
SERIAL NO

09891856

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus for visualizing in three-dimensions an image of a subsurface object such as an internal structure of a mechanical component, or of a fetus or other internal biological feature within a human body, utilizes a sensor such as an ultrasonic transducer of an ultrasound wand to acquire ultrasonic images of an object, and a target plate attached to a wand which is optically imaged by a digital camera during each of a sequence of ultrasound scans. Each ultrasound image scan of an object is made with the position and/or orientation of the ultrasonic scan beam changed, thereby forming a sequence of quasi two-dimensional slices which intersect the object at different locations and/or aspect angles. Visual features of the target plate such as pairs of intersecting lines are used to calculate a first coordinate transformation which transforms each electronically recorded oblique optical image of the target plate and sensor to a normal view thereof, and each normally oriented target plate image is used to orient each sonogram image in a fixed coordinate system. A transformation matrix is then used to assemble in a fixed three-dimensional coordinate system a plurality of normalized two-dimensional sensor image slices of correct relative size, location, and orientation. The assembly of sensor image slices enables visualization of the object in three-dimensions, as for example by mentally constructing directrix lines between contour perimeters of adjacent normalized sensor image slices to thereby define a three-dimensional image surface of the object.

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Patent Owner(s)

  • WILLIAM L. CHAPIN LAW OFFICES OF WILLIAM L. CHAPIN 16791 SEA WITCH LANE HUNTINGTON BEACH CA 92649 US

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Taylor, Geoffrey L Winnipeg, CA 24 711

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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (2)
* 9612142 Method and system for measuring flow through a heart valve 0 2006
* 2007/0255,136 Method and system for measuring flow through a heart valve 24 2006
 
NU DESIGN MEDICAL TECHNOLOGIES, INC. (1)
* 2012/0185,292 MEDICAL IMAGING DEVICE QUALITY CONTROL SYSTEM AND METHOD 2 2012
 
SAMSUNG ELECTRONICS CO., LTD. (1)
* 2012/0027,281 METHOD AND APPARATUS FOR PROCESSING IMAGE, AND MEDICAL IMAGE SYSTEM EMPLOYING THE APPARATUS 2 2011
 
Atirix Medical Systems (1)
* 8478610 Medical imaging device quality control system and method 1 2012
* Cited By Examiner