Logo

iGAP: Individualized Growth Assessment Program


Individualized growth assessment (IGA) can be used to evaluate changes in anatomical parameters over time by comparing current measurements with their expected values. Expected values in the 3rd trimester and at birth are derived from second trimester size models that are previously established for each anatomical parameter in an individual fetus (e.g. each fetus is its own control).

Individualized Growth Assessment Program (iGAP) calculates 3rd trimester predicted size trajectories and birth characteristics. The software provides graphic displays and quantitative comparisons between actual and predicted measurements.

Results are provided for both individual and combined anatomical parameters. The growth potential of each fetus is empirically determined as part of this analysis for a personalized assessment of fetal growth and neonatal growth outcome.

Login to
Clinical iGAP
Most users will find Clinical iGAP to be adequate for evaluating fetal growth on an individualized basis.
Login to
Research iGAP
Others may have a need to organize one or more fetal growth projects that require secure team collaboration. To facilitate IGA research, the Research iGAP version allows specification of fetal groups for analysis and permits export of single parameter data. Another advanced option permits development of new composite prenatal growth assessment scores (cPGAS).
Program Features Clinical iGAP Research iGAP
Specifies Rossavik fetal growth models for multiple size parameters
Generates expected third trimester size trajectories for each fetus
Compares actual measurements with predicted values
Summarizes growth for single and composite size parameters
Provides a means for evaluating predicted birth characteristics
Displays and exports composite growth summary graphs
Allows export of main data analysis screens
Allows export of single fetal size parameter data
Allows creation of projects and secure sharing of research data
Permits customization of iGAP options for research purposes
Register Here Register Here
Video Tutorials
Tutorial I: What You Need to Know About Individualized Growth Assessment View Tutorial
Tutorial II: How To Use The Software on a Fetus with Normal Growth Outcome View Tutorial
Tutorial III: How To Use The Software on a Fetus with Growth Restriction View Tutorial
+ -
Publications

Deter RL, Lee W, Sangi-Haghpeykar H, Tarca AL, Yeo L, Romero R.     Individualized fetal growth assessment: critical evaluation of key concepts in the specification of third trimester size trajectories.  J Matern Fetal Neonatal Med. 2014; 27:543-551. PMID: 23962305
Link to this publication

Deter RL, Lee W, Sangi-Haghpeykar H, Tarca AL, Yeo L, Romero R.     Fetal growth cessation in late pregnancy: Its impact on predicted size parameters used to classify small for gestational age neonates.  J Matern Fetal Neonatal Med. 2015;28:755-765. PMID: 24936858
Link to this publication

Deter RL, Lee W, Sangi-Haghpeykar H, Tarca AL, Yeo L, Romero R.     A modified prenatal growth assessment score for the evaluation of fetal growth in the third trimester using single and composite biometric parameters.  J Matern Fetal Neonatal Med. 2015;28:745-754. PMID: 24993892
Link to this publication

Deter RL, Lee W, Sangi-Haghpeykar H, Tarca AL, Li J, Yeo L, Romero R.     Personalized third-trimester fetal growth evaluation: comparisons of individualized growth assessment, percentile line and conditional probability methods.  J Matern Fetal Neonatal Med. 2016; 29:177-85. PMID: 25491881
Link to this publication

Deter RL, Levytska K, Lee W, Melamed N, Kingdom JCP.     Classifying neonatal growth outcomes: Use of birth weight, placental evaluation and individualized growth assessment.  J Matern Fetal Neonatal Med. 2016; 29: 3939-3949.
Link to this publication

Deter RL, Lee W, Kingdom JCP, Romero R.     Fetal growth pathology score: A novel ultrasound parameter for individualized assessment of third trimester growth abnormalities.  J Matern Fetal Neonatal Med. 2017 (published online).
Link to this publication

Deter RL, Lee W, Kingdom JCP, Sangi-Haghpeykar H, Romero R.     Third trimester growth restriction patterns: Individualized assessment using a Fetal Growth Pathology Score.  J Matern-Fetal Neonatal. Med. 2018; 31:2155-2163.
Link to this publication

Deter RL, Lee W, Kingdom JCP, Romero R     Second trimester growth velocities: assessment of fetal growth potential in SGA singletons,  J Matern Fetal Neonatal Med. 2017 DOI: 10.1080/14767058.2017.1395849
Link to this publication

Russell L. Deter, Wesley Lee, Lami Yeo, Offer Erez, Uma Ramamurthy, Medha Naik, Roberto Romero,   Individualized growth assessment: conceptual framework and practical implementation for the evaluation of fetal growth and neonatal growth outcome, American Journal of Obstetrics and Gynecology, Volume 218, Issue 2, Supplement, 2018, Pages S656-S678, ISSN 0002-9378
Link to this publication

Deter RL, Lee W, Kingdom JCP, Romero R.     Second trimester growth velocities: Assessment of fetal growth potential in SGA singletons.  J Matern-Fetal Neonatal Med 2019; 32: 939-946.