or Computed Tomography
is a CT Scan?
or "CAT" scan stands for Computerized (Axial) Tomography. It is a
sophisticated type of X-ray that produces images using a computer to
show cross-sectional images of the body at different planes. A
computer reconstructs these “slices” to produce the actual pictures
of your inner structures. Considering that some slices are as thin
as 0.5 mm, a CT scan offers much more image detail than a
traditional X-ray — which means your physician gets the best
information to make the most accurate diagnosis.
What to Expect?
will be expected to lie on a table and hold very still. Because each
CT procedure varies, you may also be expected to drink oral contrast
and/or be injected with an intravenous contrast. The procedure
normally takes 10-30 minutes depending on the specific procedure.
Please consult your physician or our staff if you have any questions
regarding what to expect during your procedure.
Please tell us:
If you have any kidney issues (i.e. transplant, removal, kidney
If you are allergic to iodine or other materials
If you are pregnant
If you are claustrophobic and feel that you might be unable to
lie still for long periods of time
If you are a diabetic on Glucophage, Blyburide, Metformin, or
CAT Scan of Abdomen/Pelvis
-No solid foods after 10:00 pm.
-Liquids and medications can be taken as usual.
-Mix half a bottle of the Omnipaque with 16oz of any liquid* and
drink after 10pm. Then mix the other half with 16oz of any liquid*
and drink starting 2 hours prior to your appointment time.
(* any liquid besides milk)
if you take Metformin (glucophage) and are scheduled for a CAT scan
of the abdomen, tell the receptionist. This medication
should be stopped two days before and for two days after the CAT
scan. Your clinician might order a blood test to check
your kidney status, so talk with your clinician before resuming the
CAT Scan of Neck, Chest, Liver, or Kidneys
No solid foods
4 hours prior to your exam.
Liquids and medications can be taken.
CAT Scan of Sinus, Head, or Extremity
If you are scheduled for a neck, chest or abdomen CT, lab work may
be required before your exam can be performed. The lab work will
check your kidney function and the labs must be done at least 48
hours prior to your exam in order to assure the results are
received in adequate time. Lab work cannot be older than 30 days.
No preparation is necessary.