Automatic measurements of fetal long bones. A feasibility study.

Abstract

We investigated whether it would be possible for a computer to propose values for measurements com-· monly obtained (femur and humerus) during obstetrical sonography. ln this preliminary study, the images were scanned and analyzed off-line using morphological operators. The procedure described allowed us to measure the long bones and has a very high coefficient A n important part of obstetrical ultrasound is the measurement of a series of parameters that are used to assess gestational age and evaluate normalcy of growth. Obtaining these measurements is reasonably simple, yet inter-and intraobserver variations are common, not negligible, and have been well documented. M These variations stem from two main sources of error: the acquisition of the proper image and the correct estimation of where to place the calipers. The acquisition of the proper image can only be improved by training and experience. The correct estimation of where the calipers should be placed depends on the subjective estimation by the operator of the limits of the long bone. Known artifacts, such as side·lobe artifacts, may interfere with the appropriate recognition and placement of the calipers. The purpose of this study was to investigate whether a computer program could be devised that would automatically

Fetal biometry: a comparison between experienced sonographers and automated measurements

“…One of the first attempts to evaluate automatic fetal biometry was the study done by Thomas JG and coauthors in 1991 [10]. They investigated whether it would be possible for a computer to measure long bones of the fetus.…”

Evaluation of automated tool for two‐dimensional fetal biometry

“…Automation of fetal biometry is one possible way to increase efficiency in the workflow while at the same time offering the potential for improved accuracy and reproducibility. The first attempt of fetal biometry automation was for FL measurement, over two decades ago. Recent work by Yazdi et al .…”

“…Automation of fetal biometry is one possible way to increase efficiency in the workflow while at the same time offering the potential for improved accuracy and reproducibility. The first attempt of fetal biometry automation was for FL measurement, over two decades ago 8 . Recent work by Yazdi et al has shown that automated measurements can reduce intraoperator variability and can therefore potentially be relied upon for reproducibility 3 .…”

Does the Use of Automated Fetal Biometry Improve Clinical Work Flow Efficiency?

“…Thus, automatic fetal biome- try may improve the efficiency of prenatal sonography. Previous studies demonstrated the feasibility of automated fetal biometric measurements 1,[7][8][9][10][11][12][13] and that this approach is both reliable and reproducible. 1 However, our study further demonstrates that the automatic biometric method is more efficient than the manual one in the setting of a busy ultrasound practice.…”