R2AoP: Reliable and Robust Angle of Progression Estimation from Intrapartum Ultrasound

Researchers introduced R2AoP, a new method for estimating Angle of Progression from transperineal ultrasound.

It uses a three-branch local-structure-enhanced backbone, confidence-weighted contour fitting, and lightweight test-time adaptation.

The approach is designed to stay robust when ultrasound images are noisy or vary across clinical settings.

On multi-center benchmarks, R2AoP reportedly outperformed prior methods.

More accurate AoP measurement could make labor assessment more objective and reliable.