Obstetric ultrasound, maternal-fetal doppler velocimetry studies
When is this exam indicated?
In all cases in which a tumor is diagnosed during pregnancy, close monitoring of fetal growth is necessary, especially in case of chemotherapy.
How is it performed?
The latest generation of ultrasound available in gynecology and obstetrics clinics is used to assess fetal growth. The ultrasound approach is usually transabdominal except in those cases where it is necessary to perform a transvaginal assessment of the length of the cervix.
As ionizing radiation is not used, there are no contraindications to ultrasound examination; however, the principle known as ALARA (as low as reasonably achievable) remains.