RT Book, Section A1 Yeo, Lami A1 Gonçalves, Luís F. A1 Romero, Roberto J. A1 Gervasi, Maria-Teresa A1 Pacora, Percy A2 Fleischer, Arthur C. A2 Toy, Eugene C. A2 Lee, Wesley A2 Manning, Frank A. A2 Romero, Roberto J. SR Print(0) ID 1106705342 T1 DOPPLER VELOCIMETRY OF THE UTEROPLACENTAL CIRCULATION T2 Sonography in Obstetrics and Gynecology: Principles & Practice, 7e YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071547727 LK obgyn.mhmedical.com/content.aspx?aid=1106705342 RD 2024/10/10 AB DefinitionsAbnormal uterine artery Doppler: defined as either an absolute cutoff (for example, resistance index >0.58), or a measurement greater than a particular centile of the reference range, and/or diastolic notching.Angle-independent Doppler indices: reflect the degree of resistance to blood flow downstream of the interrogation site. Examples include S/D (systolic/diastolic) ratio, RI (resistance index), PI (pulsatility index).Early diastolic notch: defined as a persistent decrease in blood flow velocity in early diastole, below the diastolic peak velocity.Inhibin A: a member of the transforming growth factor β family, predominantly secreted by the placenta.PAPP-A (pregnancy-associated plasma protein A): a large glycoprotein complex predominantly produced by the placenta.Placental growth factor: a pro-angiogenic protein.PP-13 (placental protein 13): a member of the galectin family predominantly expressed by the placenta.