Dating and Viability

  • Performed at 6-12 weeks
  • A dating scan will establish the gestational age of the pregnancy (being able to provide the due date)
  • The number of foetuses and gestation sacs
  • The presence of a heart beat and any unusual features of the uterus

Preparation

  • This is the most important of all pregnancy ultrasounds and looks for any evidence of abnormality.
  • The Sonographer needs to focus on the scan and as such we ask patients to keep family members to a minimum and to provide alternative care for young children (where possible).
  • It is recommended that patients wear loose comfortable clothing with easy access to the abdomen area (without zippers, buttons, jewellery or metallic accessories)
  • Arrive 10-15 minutes prior to the appointment to complete paperwork.
  • The patient is required to drink fluids and refrain from going to the toilet, ensuring the patient is not uncomfortably full.
  • The patient is provided images of the foetus.
  • We request that no photographer or video is performed during the examination.

Procedure

  • A sonographer will call the patient name and escort the patient through to the examination room
  • The sonographer will provide information about the procedure prior to commencing the scan, providing ample time to answer any questions the patient may have.
  • The patient will be asked to lay down on the examination table
  • The abdomen is exposed and water-based gel is applied to the skin
  • A transducer is glided gently over the abdomen by the Sonographer. Patients generally are able to view the image of the foetus on the imaging screen.
  • The patient may be asked to perform different movements/positions during the procedure.

Risks or Side Effects

There are no known risks or side effects of a dating and viability scan.


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