| What is a CT scan?
Computed Tomography is a non-invasive, painless,
and accurate diagnostic imaging test that
displays images of internal structures of the
body. CT uses x-rays to obtain cross-sectional
views of the area of interest in a short amount
of time. The data is then digitized and
displayed on a computer screen for the
Radiologists.
What are the advantages of CT?
CT scans can aid in the diagnosis of various
tumors, infections, abnormal fluid collections,
bleeding, and other diseases. It captures a high
degree of resolution compared to conventional
x-rays and can detect some conditions that
general x-ray cannot. The cross sectional images
that are collected can be manipulated in
different orientations or planes for the
Radiologist and can also be superimposed to
create 3D images.
Is there any risk to having a CT?
Unlike MRI, CT examinations are produced with
the use of x-rays. However, a scan involves the
use of a narrow, controlled beam of x-ray that
results in a small dose of radiation. It is
widely thought that the quality and accuracy of
CT far outweighs the risk of the exposure.
Sometimes a CT scan involves the injection of
contrast dye to help better visualize anatomy.
It is important to let us know if you have known
allergies to contrast dye, history of kidney
failure, high blood pressure, cardiac problems,
asthma, or if you are a diabetic. If you do, you
may be a candidate for CT without the use of
contrast or another test may be recommended.
Women who are pregnant or if there is a
possibility that they are pregnant, should not
have a CAT scan unless directed by their
referring doctor and approved by the
Radiologist. A nursing mother should wait 24 hrs
after the contrast injection (if given) before
she resumes nursing again.
What are the expectations for a CT scan?
Before the procedure, you may be asked to
change into a gown and remove any metallic
objects which may interfere with the quality of
the procedure. You will also be asked to fill
out a short questionnaire for the technologists
of which will give us valuable information prior
to your scan. Please inform the technologist if
you are or may be pregnant.
The patient will be asked to lie on a table
which will gradually move into a doughnut shaped
scanner. The exam itself is very short and we
may give simple breathing instructions. The most
important part the patient plays is to hold very
still during the exam. Some tests require the
injection of a contrast dye which is used to
highlight certain parts of anatomy for the
Radiologist. If so, an intravenous line will be
placed prior to the scan.
A highly qualified and certified CT technologist
will evaluate the patient at all times during
the exam and ensure the patient’s comfort.
Blankets and cushions will be provided if
needed.
Is there any preparation for a CT scan?
Abdominal Scans: Nothing to eat or drink four
(4) hours prior to the exam. Drink one (1)
bottle of a REDI-CAT (barium drink) one (1) hour
prior to the test. Clear liquids may be taken up
to one (1) hour before the test.
Abdomen/Pelvic Scans: Nothing to eat or drink
four (4) hours prior to the exam. Drink one (1)
bottle of REDI-CAT (barium drink) four (4) hours
prior to the exam and one (1) bottle one (1)
hour prior to the exam. Clear liquids may be
taken up to one (1) hour before the test
Head, Neck, Chest Scans: Nothing to eat or drink
four (4) hours prior to the exam. Clear liquids
may be taken up to one (1) hour before the test.
The above mentioned REDI-CAT barium drink can be
picked up at our facility any day before the
test. If your test requires an injection and you
meet certain risk factors, you may be asked to
obtain a quick blood test prior to the exam.
How long does a CT scan take?
Because of our state-of-the-art technology,
the exam itself will only take a few minutes.
However, you should allow around 30-40 minutes
for the entire experience. |
