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PATIENTS & VISITORS MEDICAL PROFESSIONALS EVENTS & HEALTH INFORMATION ABOUT US
 

Ultrasound


What is it? 

An ultrasound scan involves the use of inaudible high frequency sound waves to obtain images of internal organs. This allows the radiologist (a doctor who specialises in the interpretation of images) to examine the patient non-invasively and without discomfort.

 

What to expect for the procedure

  1. You will be positioned comfortably lying down on the examination couch. 
  2. The area of the body to be examined will be uncovered.
  3. A thick water-soluble gel will be applied over the area under examination to facilitate the transmission of the sound waves through your body. 
  4. An ultrasound probe will be moved over the area under examination. The waves generated from the probe will produce images on the display monitor. Slight pressure may be applied to better visualise some structures. 
  5. Room lights will be dimmed in order for the operator to visualise the images on the monitor properly.
  6. The gel is wiped off after completion of examination. You will then be ready to leave the imaging centre. 

 

Preparation for the procedure

Preparation for procedure varies according to the type of scan. Please refer to “Preparation Instructions for Patient” on page 3 of leaflet.


Abstinence from smoking

  • Is required on the day of examination for ultrasound of the upper abdomen. Smoking is likely to stimulate the biliary system and affect the accuracy of diagnosis.

 

After the procedure

You may resume normal activity after the procedure.  Your doctor will advise you of the results at your next appointment.

 

Important points to note

If you are on restricted fluids or suffer from diabetes mellitus, please inform us when making the appointment.  If you are on medication, please continue to take them with plain water.

 

What are the risks involved?

The use of high frequency sound waves in medical diagnosis has been deemed safe. Pregnant women may undergo this procedure.  There are no known immediate side effects or long-term effects.


How To Prepare

Procedures

Preparation Instruction

  • Abdomen
  • Doppler Aorta
  • Doppler Renal Arteries
  • Doppler Renal Veins
  • Liver Doppler
  • Renal Doppler
  • Transplanted Liver

FAST according to the duration below:

Age Range

Duration

Below 1 year old

Omit last feed

1 – 10 years old

4 hours       

Above 10 years old

6 hours     

Sips of plain water allowed.

DO NOT smoke on the day of examination.

 

Diabetic patients: Stop all diabetic medication and/or insulin injection on the day of scan.

  • Abdomen & Pelvis

- FAST according to the duration below:

Age Range

Duration

Below 1 year old

Omit last feed

1 – 10 years old

4 hours       

Above 10 years old

6 hours     

DO NOT smoke on the day of examination.

-  Drink at least 4 cups of plain water (1 hour before scan) to keep your bladder FULL. (Omit this instruction if you are on fluid restriction.)

 

Diabetic patients: Stop all diabetic medication and/or insulin injection on the day of scan.

  • Kidney
  • Bladder
  • Pelvis
  • Prostate
  • Urinary Bladder

- No fasting.

- Drink at least 4 cups of plain water (1 hour before scan) to keep your bladder FULL. (Omit this instruction if you are on fluid restriction.)

- Do not empty bladder till scan is completed or as instructed by sonographer.

Other scans not indicated above

No preparation.

 

 downloadbrochure

 

Please contact us at ddi_enquiries@nuhs.edu.sg or at 6772 3700 for further queries.


Last updated on 20 Dec 2016