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An automated framework for image classification and segmentation of fetal ultrasound images for gestational age estimation.


ABSTRACT: Accurate assessment of fetal gestational age (GA) is critical to the clinical management of pregnancy. Industrialized countries rely upon obstetric ultrasound (US) to make this estimate. In low- and middle- income countries, automatic measurement of fetal structures using a low-cost obstetric US may assist in establishing GA without the need for skilled sonographers. In this report, we leverage a large database of obstetric US images acquired, stored and annotated by expert sonographers to train algorithms to classify, segment, and measure several fetal structures: biparietal diameter (BPD), head circumference (HC), crown rump length (CRL), abdominal circumference (AC), and femur length (FL). We present a technique for generating raw images suitable for model training by removing caliper and text annotation and describe a fully automated pipeline for image classification, segmentation, and structure measurement to estimate the GA. The resulting framework achieves an average accuracy of 93% in classification tasks, a mean Intersection over Union accuracy of 0.91 during segmentation tasks, and a mean measurement error of 1.89 centimeters, finally leading to a 1.4 day mean average error in the predicted GA compared to expert sonographer GA estimate using the Hadlock equation.

SUBMITTER: Prieto JC 

PROVIDER: S-EPMC8086527 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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An automated framework for image classification and segmentation of fetal ultrasound images for gestational age estimation.

Prieto Juan C JC   Shah Hina H   Rosenbaum Alan J AJ   Jiang Xiaoning X   Musonda Patrick P   Price Joan T JT   Stringer Elizabeth M EM   Vwalika Bellington B   Stamilio David M DM   Stringer Jeffrey S A JSA  

Proceedings of SPIE--the International Society for Optical Engineering 20210215


Accurate assessment of fetal gestational age (GA) is critical to the clinical management of pregnancy. Industrialized countries rely upon obstetric ultrasound (US) to make this estimate. In low- and middle- income countries, automatic measurement of fetal structures using a low-cost obstetric US may assist in establishing GA without the need for skilled sonographers. In this report, we leverage a large database of obstetric US images acquired, stored and annotated by expert sonographers to train  ...[more]

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