Computed tomography, also known as CT, or CAT, scan uses X-rays to produce
images of internal body structures. CT provides greater detail of soft
tissue such as organs or blood vessels than a traditional X-ray. CT can
also be used for a tissue or fluid biopsy. A CT scan typically last 10
to 90 minutes, depending upon the area being imaged.
Preparation for a CT scan includes removing all jewelry (and piercings).
Patients may be asked to wear a hospital gown.
Depending on the type of exam, patients may:
- Be instructed not to eat or drink anything for three hours prior to the
- Be given special instructions regarding their medications
- Have an IV started (contrast exams)
- Be instructed to drink a special medication (oral contrast)
Special instructions are discussed with each patient during the registration process.