Няма намерени резултати


Ultrasound in Obstetrics

Ultrasound (sonography) is a non-invasive imaging modality which is used in obstetrics in order to visualize the fetus on a screen before birth.


The method is harmless, non-invasive and easily accessible. For all these reasons it has widespread clinical application in modern obstetrics.


Implementation of ultrasound into clinical practice is has read to the rapid development of contemporary prenatal care.


The performance of the ultrasound examination in pregnancy is highly dependent on the quality of the ultrasound equipment and the experience of the health professional performing the scan. The experience of the examiner is of utmost importance.


The ultrasound examination in MC MARKOVS is used in obstetrics for:


  • Diagnosis of early pregnancy and its potential complications;
  • Diagnosis of gynecological disease during pregnancy - uterine fibroids, ovarian cysts, adnexal formations, etc.;
  • Diagnosis of multiple pregnancy and its potential complications, ultrasound assessment of chorionicity, etc.;
  • Fetal biometry - measurement of various fetal parameters with correlation to the gestational age (head, abdomen, long bones, etc.).

All fetal measurements are compared to their normal values for the corresponding gestational age. Thus, the fetal growth and development is evaluated and the estimated date of delivery is determined with accuracy.

  • Fetal anatomy survey - the ultrasound examination is the main imaging modality for prenatal diagnosis for various anomaly structural fetal abnormalities. The fetal morphology scan can be performed at different gestational periods. Each fetus should be carefully examined at least three times throughout the course of the pregnancy - at 12-13+6 w.g., 18-23 w.g. and 28-32 w.g.;
  • Ultrasound screening for fetal chromosomal abnormalities - prenatal detection of certain sonographic markers and/or structural defects increases the risk of an associated fetal chromosomal abnormality. For example, the increased fetal nuchal translucency in the first trimester increases the risk for associated Down syndrome.

In all such cases, additional diagnostic tests are usually discussed - a repeat fetal anatomy assessment, fetal echocardiography, invasive prenatal diagnosis (chorion nillous sampling or amniocentesis), etc.


  • The ultrasound screening for preterm delivery is based on the sonographic measurement of the cervical length. The examination is carried out transvaginally or transabdominally. The transvaginal measurement is significantly more accurate. The ultrasound screening for preterm delivery can be performed practically during every single scan in obstetrics. It may be also repeated in later gestation. Usually, the cervix is sufficiently long in early pregnancy. Shortening is most often observed at 18-23 w.g. or later.

The risk for preterm delivery increases significantly with cervical length less than 25 mm. Any shortening of the cervix requires special attention from your Ob&Gyn specialist.

  • Fetal echocardiography (Fetal Echo) is a highly specialized sonographic examination of the fetal heart. It can be performed in different gestational periods. Traditionally, Fetal Echo is planned at around 20-22 w.g., but it is possible to perform it earlier or later in gestation. Early fetal echocardiography is usually indicated in high-risk pregnancies (positive family history for a cardiac malformation, suspected fetal structural heart defect from a previous ultrasound examination, etc.).

Attention: In order to perform fetal echocardiography special qualification of the health professional and working high-class ultrasound equipment is required.


  • Doppler examination of the blood flow in the maternal-fetal and feto-placental circulation is a highly specialized ultrasound examination that evaluates and monitors the state of the fetus. The test is mainly used as a fool for prenatal screening or for monitoring high-risk pregnancies (complicated with congenital thrombophilia, increased blood pressure, preeclampsia, diabetes mellitus, Rh-isoimmunization, etc.).

We offer to all our patients at MC MARKOVS the full range of highly specialized ultrasound examinations during pregnancy. All scans are performed in a comfortable environment with high-end ultrasound equipment by highly qualified health professionals.


For more information about the possibilities to perform the various types of ultrasound examinations during pregnancy at MC MARKOVS you can contact your doctor or call at the registration desk.