NCCN Guidelines for Patients
Stomach Cancer, Version 1.2016
Preparing for treatment
CT scan with contrast
omography) is used to help stage the
cancer. It is an imaging test that makes pictures of the
insides of your body. The pictures are called images.
CT takes many pictures of a body part from different
angles using x-rays. A computer combines the x-rays
to make detailed pictures.
A CT scan of your chest, abdomen, and pelvis is
advised. A contrast dye should be used to make the
pictures clearer. The dye will be injected into your
vein and mixed with a liquid you drink.
The dye may cause you to feel flushed or get hives.
Rarely, serious allergic reactions occur. Tell your
doctor and the technicians if you have had bad
reactions in the past.
Before the scan, you may need to stop taking some
medicines, stop eating and drinking for a few hours,
and remove metal objects from your body. During
the scan, you will need to lie face up on a table that
moves through the machine.
See Figure 6
As the machine takes pictures, you may hear
buzzing, clicking, or whirring sounds. You will be
alone, but a technician will operate the machine in a
nearby room. He or she will be able to see, hear, and
speak with you at all times. One scan is completed in
about 30 seconds.
You will likely be able to resume your activities right
away unless you took a sedative. You may not learn
of the results for a few days since a radiologist needs
to see the pictures. A radiologist is a doctor who’s an
expert in reading the images.
Pictures of the insides of your body
can be made with an imaging test.
No devices will be inserted into
your body. However, you may be
injected with and have to drink a
contrast dye. During the test, you
will lie on a table that will move into
the tunnel of the imaging machine.
The pictures will be viewed by a
doctor who will look for signs of