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. 2017 Nov 27;77(11):1157–1173. doi: 10.1055/s-0043-118908
Consensus-based Statement 5.S7
Expert consensus Level of consensus +++
References: 70 ,  71 ,  76 ,  77 ,  78 ,  79 ,  80
The cerebroplacental ratio (CPR), which is calculated by dividing the PI of the middle cerebral artery by the PI of the umbilical artery, can be useful to monitor IUGR as a low CPR is a predictor for poor perinatal outcome.