Obstetric Imaging Overview

Principles

Definition

Obstetric imaging is a specialized area within medical imaging focusing on the application of non-invasive techniques, primarily ultrasound, for the visualization and assessment of the fetus, placenta, uterus, and adjacent maternal structures throughout pregnancy. This methodological approach is fundamental to prenatal diagnostics and monitoring, enabling the evaluation of fetal growth, morphology, and well-being, as well as the detection of potential complications to inform clinical management and optimize outcomes.

Ontological type

Core Modalities

Fetal Assessment

Clinical Indications

Key developments

Key Figures

Ultrasound Quantitative Consolidation era

Russell L. Deter [1] was active across Baylor College of Medicine [4] and New Haven Public Schools [3] during this ultrasound-driven era. His key contributions to standardized fetal biometry include the sonographic estimation of fetal weight with femur length added to head and abdomen measurements [7], and a critical re-evaluation of fetal biparietal diameter's relation to gestational age using real-time ultrasound [8], which advanced objective growth surveillance in obstetric care. Ilan E. Timor-Tritsch [2] was affiliated with University of California, San Francisco [5] and Columbia University [6] during this era. His contributions include early and simple determination of chorionic and amniotic type in multifetal gestations in the first fourteen weeks by high-frequency transvaginal ultrasonography [9], the technique of transvaginal sonography with the use of a 6.5 MHz probe [10], and high-frequency transvaginal sonographic examination for the potential malformation assessment of the 9-week to 14-week fetus [11], which collectively advanced first-trimester diagnosis and the quantitative assessment backbone of obstetric imaging in this era.

Volumetric Multimodal Consolidation era

Wesley Lee [1] was associated with Wayne State University [3] and the University of Michigan [4] during the Volumetric Multimodal Consolidation era (1999–2009). His key contributions in this era included the sonographic detection of placenta accreta in the second and third trimesters [7] and the synthesis of Three- and 4-Dimensional Ultrasound in Obstetrics and Gynecology [8], which advanced standardized volumetric protocols and multicenter applicability. Chiung‐Hsin Chang [2] was affiliated with Stanford University [5] and Chang Gung University [6] during this era. Her contributions include assessments of fetal cerebellar volume using three-dimensional ultrasound [9], three-dimensional ultrasound in the assessment of fetal cerebellar transverse and antero-posterior diameters [10], and the assessment of normal fetal brain volume by 3-D ultrasound [11], which provided quantitative benchmarks for developmental norms and supported volumetric screening practices.

AI-driven Automation and Standards era

Zulfiqar A Bhutta [1] is a leading figure in obstetric imaging during the AI-driven Automation and Standards era, with affiliations at Johns Hopkins University [3] and University of Washington [4]. His notable contribution centers on International standards for fetal growth based on serial ultrasound measurements: the Fetal Growth Longitudinal Study of the INTERGROWTH-21st Project [7], providing standardized biometric references that underpin automated, cross-center workflows. Aris T. Papageorghiou [2] is affiliated with University of California, Berkeley [5] and Cornell University [6], reflecting his cross-institutional leadership during this era. His contributions, highlighted by the INTERGROWTH-21st Project paper [7], helped establish internationally endorsed fetal-growth standards that support real-time, quantitative imaging outputs and standardized biometric workflows across centers, advancing AI-driven automation in obstetric imaging.