Journal Highlight: Fetal MRI compared with ultrasound for the diagnosis of obstructive genital malformations

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  • Published: Dec 18, 2017
  • Author: spectroscopyNOW
  • Channels: MRI Spectroscopy
thumbnail image: Journal Highlight: Fetal MRI compared with ultrasound for the diagnosis of obstructive genital malformations

A comparison of the accuracies of MRI and ultrasound to diagnose and characterize congenital obstructive genital abnormalities has shown that MRI facilitates assessment of major pelvic organs and provides significant information that may alter the prenatal management.

Fetal MRI compared with ultrasound for the diagnosis of obstructive genital malformations

Prenatal Diagnosis, 2017, 37, 1138-1145
Anne Elodie Millischer, David Grevent, Véronique Rousseau, Neil O'Gorman, Pascale Sonigo, Bettina Bessieres, Yves Ville, Nathalie Boddaert and Laurent J. Salomon

Abstract: The accuracies of magnetic resonance imaging (MRI) and ultrasound (US) to diagnose and characterize congenital obstructive genital abnormalities have been compared. A retrospective cohort of 20 fetuses who underwent a fetal MRI following a US diagnosis of obstructive urogenital malformation were examined. We compared MRI and US findings and their correlation with the definitive diagnosis. The correct diagnosis was obtained in 6/20 (30%) cases and 19/20 cases (95%) with US and MRI, respectively. MRI revealed additional information to US in 15/20 cases (75%) and modified the prenatal management in 14 fetuses (70%). The identification rates of the most important anatomical landmarks for the diagnosis, using US and MRI, were compared. Bladder: US 17/20 (85%) vs MRI 20/20 (100%) P = 0.23; vagina: US 6/19 (31.5%) vs MRI 19/19 (100%) P < 10−4; uterus: US 11/19 (57.8%) vs MRI 19/19 (100%) P = 0.003, kidneys: US: 40/40 (100%) MRI: 40/40 (100%) P = 1, ureters: US 14/40 (35%) vs MRI 30/40 (75%) P=0.001, rectum: US 6/20 (30%) MRI 20/20 (100%) P < 10−4, and sacrum: US 20/20 (100%) vs MRI 17/20 (85%) P = 0.23. In fetuses with obstructive urogenital malformations, MRI facilitates assessment of major pelvic organs and provides significant information that may alter the prenatal management.

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