AA	Arterio-Arterial
AC	Abdominal Circumference
ACA	Anterior Cerebral Artery
AEDF	Absent End Diastolic Flow
AI	Artificial Intelligence
ALARA	As Low As Reasonably Achievable
AREDF	Absent or Reversed End Diastolic Flow
AV	arterio-venous
CAVM	Cerebral ArterioVenous Malformations
CPR	Cerebroplacental Ratio
DV	Ductus Venosus
EDF	End Diastolic Flow
EFW	Estimated Fetal Weight
FGR	Fetal Growth Restriction
IUT	Intra Uterine Transfusion
MAP	Mean Arterial Pressure
MCA	Middle Cerebral Artery
MCA-PSV	Middle Cerebral Artery Peak Systolic Velocity
MI	Mechanical Index
PAPP-A	Pregnancy-Associated Plasma Protein-A
PCA	Posterior Cerebral Artery
PI	Pulsatility Index
PlGF	Placental Growth Factor
PRF	Pulse Repetition Frequency
RI	Resistance Index
sFlt1	Fms-like tyrosine kinase-1
TACAD	Tela-Choroidea-to-Anterior-Cerebral-Artery Distance
TAPS	Twin Anemia–Polycythemia Sequence
TI	Thermal Index
TTTS	Twin-Twin Transfusion Syndrome
UA	Umbilical Artery
UtA	Uterine Artery
VGAM	Vein of Galen Aneurysmal Malformation
VV	veno-venous