Repetitive arrays of ultrasound beams scan the fetus in thin slices and are reflected back onto the same transducer.
The information obtained from different reflections are recomposed back into a picture on the monitor screen (a sonogram, or ultrasonogram).
Ultrasound Service does not only perform Obstetric and gynaecological ultrasounds, they also perform general ultrasounds and vascular ultrasounds.
Our general ultrasounds are reported on by Dr Maria Atienza-Hipolito and our vascular ultrasounds are reported on by specialist vascular surgeon Dr Peter Bray.
The 3D ultrasound on these machines also aids in better imaging of babies spine and limbs, improved image quality over all gives improved diagnostic accuracy.
Patients only have to see how clear the images are to realise the benefits of this type of machine.
However, in the early pregnancy, the developing embryo is very small (at 6 weeks gestation, the baby is only 5-9mm long) and a transvaginal ultrasound may be required to get a better image of the baby.
Transvaginal ultrasound is safe and commonly performed during all stages of pregnancy, including the first trimester. Transabdominal ultrasound involves scanning through your lower abdomen.
They are emitted from a transducer which is placed in contact with the maternal abdomen, and is moved to "look at" (likened to a light shined from a torch) any particular content of the uterus.
Movements such as fetal heart beat and malformations in the feus can be assessed and measurements can be made accurately on the images displayed on the screen.
Such measurements form the cornerstone in the assessment of gestational age, size and growth in the fetus.
During the examination, the fetus is seen by abdominal ultrasound.
Occasionally the view is not clear and it may be necessary to perform a vaginal scan.