Characterisation of Placental Diffusion in Twin Pregnancies using Diffusion-Weighted Magnetic Resonance Imaging
Soha Said Ramadan 1 , Pablo Caro Dominguez 1,2 , Jorge H. Davila 1,2 , Melissa Valdez Quintana 1,2 , Julie Hurteau-Miller 1,2 , David Grynspan 2,3 , Felipe Moretti 2,4 , and Elka Miller 1,2
Department of Radiology, Children's Hospital
of Eastern Ontario, Ottawa, Ontario, Canada,
of Diagnostic Imaging, University of Ottawa, Ottawa,
Department of Pathology,
Children's Hospital of Eastern Ontario, Ottawa, Ontario,
of Obstetrics, Gynecology and Newborn Care, The Ottawa
Hospital, Ottawa, Ontario, Canada
INTRODUCTION: Most fetal DWI studies investigate
singletons or rare twin-related diseases. This
retrospective study investigates twin placental
diffusion. METHODS: Two ADC-quantification methods were
evaluated. Diffusion was compared within twins with
double-disc placentas and between twins and normal
singletons. RESULTS: ADC-quantification methods were
significantly different. No significant diffusion
difference was found within double-disc placental pairs
or between twins and singletons with GA≤24 weeks.
Comparison for GA>24 weeks could not be performed due to
data paucity. DISCUSSION: Quantification discrepancy
suggests non-uniform placental diffusion. Results
suggest no twin-placental diffusion difference within
twins or compared to singletons with GA≤24 weeks.
Pathological correlation is required.
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