System and method for fetal biometric measurements from ultrasound data and fusion of same for estimation of fetal gestational age
First Claim
1. A method for segmenting and measuring anatomical structures in fetal ultrasound images comprising the steps of:
- providing a digitized 3-dimensional ultrasound image of a fetus comprising a plurality of intensities corresponding to a domain of points on a 3-dimensional grid;
providing a plurality of classifiers trained to detect anatomical structures in said image of said fetus;
segmenting and measuring an anatomical structure using said image classifiers by applying elliptical contour classifiers to said fetal ultrasound image, wherein a plurality of 2-dimensional contours characterizing said anatomical structure are detected; and
combining said anatomical structure measurement with measurement of another anatomical structure to estimate gestational age of said fetus by approximating a distribution and uncertainty for each measurement, projecting each measurement distribution and uncertainty onto a gestational age axis of a gestational biometric chart to obtain a gestational age hypothesis for each measurement, estimating the distribution of the gestational age hypotheses, and fusing said age hypotheses using a variable bandwidth density-based fusion wherein a majority vote of said multiple hypotheses estimates said gestational age.
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Abstract
A method for segmenting and measuring anatomical structures in fetal ultrasound images includes the steps of providing a digitized ultrasound image of a fetus comprising a plurality of intensities corresponding to a domain of points on a 3-dimensional grid, providing a plurality of classifiers trained to detect anatomical structures in said image of said fetus, and segmenting and measuring an anatomical structure using said image classifiers by applying said elliptical contour classifiers to said fetal ultrasound image, wherein a plurality of 2-dimensional contours characterizing said anatomical structure are detected. The anatomical structure measurement can be combined with measurement of another anatomical structure to estimate gestational age of the fetus.
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Citations
18 Claims
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1. A method for segmenting and measuring anatomical structures in fetal ultrasound images comprising the steps of:
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providing a digitized 3-dimensional ultrasound image of a fetus comprising a plurality of intensities corresponding to a domain of points on a 3-dimensional grid; providing a plurality of classifiers trained to detect anatomical structures in said image of said fetus; segmenting and measuring an anatomical structure using said image classifiers by applying elliptical contour classifiers to said fetal ultrasound image, wherein a plurality of 2-dimensional contours characterizing said anatomical structure are detected; and combining said anatomical structure measurement with measurement of another anatomical structure to estimate gestational age of said fetus by approximating a distribution and uncertainty for each measurement, projecting each measurement distribution and uncertainty onto a gestational age axis of a gestational biometric chart to obtain a gestational age hypothesis for each measurement, estimating the distribution of the gestational age hypotheses, and fusing said age hypotheses using a variable bandwidth density-based fusion wherein a majority vote of said multiple hypotheses estimates said gestational age. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory program storage device readable by a computer, tangibly embodying a program of instructions executable by the computer to perform the method steps for segmenting and measuring anatomical structures in fetal ultrasound images, said method comprising the steps of:
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providing a digitized 3-dimensional ultrasound image of a fetus comprising a plurality of intensities corresponding to a domain of points on a 3-dimensional grid; providing a plurality of classifiers trained to detect anatomical structures in said image of said fetus; segmenting and measuring an anatomical structure using said image classifiers by applying elliptical contour classifiers to said fetal ultrasound image, wherein a plurality of 2-dimensional contours characterizing said anatomical structure are detected; and combining said anatomical structure measurement with measurement of another anatomical structure to estimate gestational age of said fetus by approximating a distribution and uncertainty for each measurement, projecting each measurement distribution and uncertainty onto a gestational age axis of a gestational biometric chart to obtain a gestational age hypothesis for each measurement, estimating the distribution of the gestational age hypotheses, and fusing said age hypotheses using a variable bandwidth density-based fusion wherein a majority vote of said multiple hypotheses estimates said gestational age. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification