Table 1

Inclusion and non-inclusion criteria

Inclusion criteriaNon-inclusion criteria

  • Woman age ≥18 years

  • Gestational age

    • 8 WG Group: 8 to 8+6

    • 11 WG Group: 11 to 11+6

    • 13 WG Group: 13 to 13+6

  • Body mass index≤40 kg/m².

  • Have given informed and written consent.

  • Have confirmed her request of surgical elective abortion.

  • Contraindication to contrast injection: hypersensitivity to sulfur hexafluoride or any of the other ingredients, history of cardiac disease, respiratory distress syndrome and severe pulmonary hypertension.

  • Woman considered at risk of IUGR/PE: history of PE or IUGR, autoimmune disease, chronic high blood pressure and diabetes.

  • Woman unable to understand or follow the procedure of the study.

  • IUGR, intrauterine growth restriction; PE, preeclampsia; WG, Weeks of Gestation.