Placental Assessment Using Microvascular Flow Imaging: Reference Ranges and Clinical Application

The authors aimed to establish gestational age-specific reference ranges for the intraplacental vascular index (VI^MV) using microvascularity-flow ultrasound software and to assess its variation based on placental location, parity, and pregnancy outcomes. Their findings indicate that VI^MV increases with gestational age and varies by placental location, with potential implications for evaluating placental vascular adaptation and identifying pregnancies with altered perfusion. The study suggests that VI^MV could serve as a useful quantitative marker in clinical practice.