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CT (Computed Tomography) Scans

Imaging at The Queen's Medical Center - West Oahu offers computed tomography, also called a CT or CAT scan, a diagnostic imaging procedure that uses a combination of x-rays and computer technology to produce cross-sectional images, often called slices, of organs and body parts such as the lungs, liver, kidneys, pancreas, pelvis, extremities, brain, spine and blood vessels.

CT scans offer more detailed images of the human anatomy than traditional x-rays. This allows Queen’s imaging specialists to catch diseases and abnormalities at their beginning stages, allowing for earlier intervention and treatment.


Preparing for Your Procedure

  • Transportation: No special preparations are required for this test. You will be able to drive home after this test.
  • Food and Drink: Your doctor will tell you if fasting prior to your exam is necessary. If so, you may be asked to abstain from food for 4 to 6 hours before your appointment. You may have clear liquids (black coffee, tea, broth, clear soup or juice) in moderate amounts. If you are not instructed to abstain from food, eat normally
  • Medications: Please consult with your physician if you should hold any of your medications before taking this test
  • Clothing: You may be asked to remove metal objects such as jewelry and change into a hospital gown
  • Check-in Time: Please arrive 30 minutes prior to your scheduled appointment. You will be asked to fill out a brief questionnaire about your medical history, medications, allergies and insurance. A CT technologist will explain the test and answer any questions

What to Expect During the Procedure

The length of your test will vary depending on what the doctor has ordered, however, please expect the procedure, to between 10 to 45 minutes. Once you are released, you may go about your normal activities without restriction.

Depending on the type of procedure being done, a contrast agent, administered orally or through an IV injection, may be used to give a clearer image of the scan. The contrast may cause a temporary warm sensation or metallic taste in your mouth.

Your results will be read by a radiologist and the report will be sent to your doctor. Your doctor will contact you with the results and answer any questions you may have.


Patient Restrictions for CT Scans

Some conditions may limit the use of the CT scan. Let the CT technologist know if you have any of the following conditions:

  • Allergies
  • Congestive heart failure
  • Diabetes
  • Hypertension (high blood pressure)
  • Kidney disease
  • Pregnancy
  • Weight more than 450 lbs.

Outside Resources

Find updated information about this modality from the Radiological Society of North America.

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