Ultrasound & Medical Imaging

Hospital Wanita Metro use a brand new 3D/4D ultrasound technology so that you can actually see your baby in live 4D motion while in your womb. You are able to meet your baby! Your baby activities inside the womb can be seen which are difficult or impossible to identify on 2D scanning. In special circumstances, there are special modifications to the software that allows better visualization of the fetus. Abnormalities detected via 3D screening helps the you to identify the problem to seek further counseling or therapy. it also helps you bond with the your unborn baby.

3D, 4D and 5D High Resolution Ultrasound Scan

3D or three dimensional scan involves surface rendering and volume rendering to achieve 3D image. 4D or four dimensional view is in the video mode (movement) that can be seen while doing 3D scan, example : fetus moving hands or fetus yawning.


Advantages of 3D/4D/5D scan:


1.3D ultrasound scan will provide convincing images and diagnosis of certain fetal abnormalities which will be appreciated by the patient. These fetal abnormalities include the abnormalities:

  • on fetal face, such as cleft lips, low set ears and facial defects,

  • in the spine and feet, such as  polydactyly, club feet, spina bifida and anencephaly, and

  • in the heart, such as congenital heart defects


2.3D scan also increases the psychological bonding between the parents and their unborn baby. During the scan, parents will see and witness many facial expressions show by the baby such as sucking thumbs, yawning and mouth opening.

Reasons why 3D/4D/5D images cannot be obtained:

There are times when 3D ultrasound image cannot be obtained despite a few attempts. In order to obtain a good ultrasound image of the baby's face, the following criteria must be met:


  1. adequate amniotic fluid surround the baby's face

  2. baby's facing upwards

  3. movement of baby is minimal.

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Detail Scan

Why Get Detail Scan

Most pregnancies will end up with a normal and healthy baby. However, a small proportion of women will have a small percentage of delivering a baby with physical or mental abnormalities. Abnormalities can range from not serious to requiring very specialized care, including immediate surgery. A high definition ultrasound called Fetal Anomaly Scan (FAS) can diagnose physical abnormalities early on, when the patient is around 18 to 24 weeks pregnant.


Obstetrics Scan

The focus of ultrasound during pregnancy will depend on different trimester.

First trimester scan

  • This is also known as dating scan, viability scan, early pregnancy assessment or early pregnancy scan.

  • During the first trimester you will need a full urinary bladder or at least partial filled urinary bladder to allowed better image formation.

  • The medical Sonographer will put some conducting gel on your tummy. Then a small hand-held transducer will be used and rolled over your tummy to get the many views of your baby.

  • Sometimes you may need a clearer view and the sonographer will used a transvaginal ultrasound probe to capture the image. This is  particularly so in the early weeks of pregnancy. Transvaginal ultrasonography is useful if you are overweight or your uterus is very deep in the pelvis (the bladder need to be emptied during the transvaginal ultrasound).


Ultrasound scan is used in early pregnancy to detect the following situation:

  • Confirmation of pregnancy and it’s location whether intrauterine or extrauterine

  • Evaluate suspected ectopic pregnancy

  • Determination of placenta position

  • Detection of numbers of embryos, pregnancy sac and multiple pregnancies

  • Assess viability of embryo

  • Assess gestational age

  • Detect early pregnancy failure

  • Diagnose fetal anomalies

  • Assess fetal growth

  • Assess associated maternal abnormalities such as ovarian cysts, fibroid

Second trimester scan

This is also known as Fetal Anomaly Scan, Detailed Scan or a 20 week scan.

Third trimester scan

This is also known as Fetal Well Being Scan

  • Perform from 24 weeks-to term

  • To assess baby's position

  • To assess baby's growth

  • To assess placenta position

  • To assess amniotic fluid volume

  • To perform Doppler studies

Table showing the detection rate of abnormalities in the FAS

What the problem is?
Chance of being seen
Spina Difida
Open spinal cord
Absence of the top of the head
Excess fluid within the brain
Major Congenital Heart Problems/Valves
Diaphragmatic Hernia
A defect in the muscle which separates the chest and abdomen
Defect of the abdominal wall
Major Kidney Problems
Missing or abnormal kidney
Major Limb Abnormalities
Missing bones or very short limbs
Cerebral Palsy
Never seen
Never seen
Down Syndrome
May be associated with heart and bowel problems
About 40%
Psychiatric Illness
Never seen
*Many cases present late in pregnancy or even after birth
Ref: RCOG women health/clinical guidance/ultrasound screening