A retrospective segmentation analysis of placental volume by magnetic resonance imaging from first trimester to term gestation

Pediatric Radiology
Rachel L LeónBrandon P Brown

Abstract

Abnormalities of the placenta affect 5-7% of pregnancies. Because disturbances in fetal growth are often preceded by dysfunction of the placenta or attenuation of its normal expansion, placental health warrants careful surveillance. There are limited normative data available for placental volume by MRI. To determine normative ranges of placental volume by MRI throughout gestation. In this cross-sectional retrospective analysis, we reviewed MRI examinations of pregnant females obtained between 2002 and 2017 at a single institution. We performed semi-automated segmentation of the placenta in images obtained in patients with no radiologic evidence of maternal or fetal pathology, using the Philips Intellispace Tumor Tracking Tool. Placental segmentation was performed in 112 women and had a high degree of interrater reliability (single-measure intraclass correlation coefficient =0.978 with 95% confidence interval [CI] 0.956, 0.989; P<0.001). Normative data on placental volume by MRI increased nonlinearly from 6 weeks to 39 weeks of gestation, with wider variability of placental volume at higher gestational age (GA). We fit placental volumetric data to a polynomial curve of third order described as placental volume = -0.02*GA3 + 1.6*...Continue Reading

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Citations

Jan 24, 2019·Frontiers in Physiology·Nastaran SalavatiSanne J Gordijn
Dec 9, 2020·Pediatric Research·Imran N MirLina F Chalak
Feb 6, 2020·Obstetrics and Gynecology Clinics of North America·Rebecca L ZurSebastian R Hobson
Feb 9, 2021·Acta Obstetricia Et Gynecologica Scandinavica·Karianne SagbergVigdis Hillestad
Aug 9, 2021·Placenta·Nickie AndescavageCatherine Limperopoulos
Aug 15, 2021·Developmental Cognitive Neuroscience·Vidya RajagopalanMoriah E Thomason

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