COMPUTED TOMOGRAPHY
Computed Tomography
A Computed Tomography (CT) scan is a special examination using x-rays and special computers to produce cross-sectional images of the body, giving detailed information for diagnosis.

The advanced multi-slice CT equipment installed at our facilities are capable of high-resolution scans with a very short scanning time.

With advancement in technology, the data can be reconstructed in various planes to produce 3D images with surface rendering, virtual colonoscopy, angiography and cardiac coronary vessels.

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Preparation
  • Patient should fast for about four hours if intravenous contrast (a medication that enhances and better define blood vessels and accentuate the appearance between normal and abnormal tissue in organs) injection is required.
  • Please inform staff if you have any history of allergies.
  • Please be punctual for your appointment.
Procedure
  • You will be asked if you have any history of allergies or poor kidney functions.
  • Informed consent will be obtained if intravenous contrast is required.
  • If the CT is to examine your abdomen, you will be asked to swallow a liquid contrast material that will enable better visualisation of the stomach and bowels. It may be necessary for you to wait while the contrast material reaches the bowels. If the lower bowels are to be studied, we may require administering contrast material by enema.
  • An intravenous injection line may be set up in preparation of the intravenous injection.
  • You will be positioned on a padded table and moved into the scanner.
  • The radiographer will be able to see and hear you at all times.
  • You will be intermittently asked to stop breathing. It is important to follow the instructions given in order to ensure that the examination is successful.
  • If the intravenous injection is given, a warm sensation will be felt as the injection goes through the body. Some people report feeling a flush of heat or a metallic taste at the back of the mouth. These sensations usually disappear within a minute or two.
Benefits and Risks

BENEFITS

  • Unlike other imaging methods, CT scanning offers detailed views of many types of tissue, including the lungs, bones, soft tissues and blood vessels.
  • CT scanning is painless, non-invasive and accurate.
  • CT examinations are fast and simple. For example, in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives.
  • CT scanning can identity both normal and abnormal structures, making it a useful tool to guide radiotherapy, needle biopsies and other minimally invasive procedures.
  • CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems.

RISKS

  • The effective radiation dose from this procedure is about 0.01 mSv, which is about the same as the average person receives from background radiation in one day.
  • Women should always inform the radiographer if there is any possibility that they are pregnant.
    Computed Tomography is available at:

    Radiology Department,
    Gleneagles Hospital

    6A Napier Road, Singapore 258500
    (65) 6470 5730
    Fax: (65) 6470 5749

    Radiology Department
    Mount Elizabeth Hospital

    3 Mount Elizabeth, Level 2
    Singapore 228510
    (65) 6731 2100
    Fax: (65) 6732 3368

    Radiology Department,
    Mount Elizabeth Novena Hospital

    38 Irrawady Road, Level 2,
    Singapore 329563
    (65) 6933 1188
    Fax: (65) 6933 0526

    Radiology Department,
    Parkway East Hospital

    321 Joo Chiat Place Singapore 427990
    (65) 6340 8714
    Fax: (65) 6340 8670

    CT Centre,
    Mount Elizabeth Hospital

    3 Mount Elizabeth,
    2nd Level
    Singapore 228510
    (65) 6731 2727
    Fax: (65) 6238 0764

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