NCCN Guidelines for Patients
Peripheral T-cell Lymphoma, Version 1.2016
Imaging tests make pictures (images) of the inside
of your body. They can show where the cancer is in
your body. This information helps your doctors stage
the cancer. More information on cancer staging is
described later in this chapter.
Your treatment team will tell you how to prepare for
the test. You may need to stop taking some medicines
and stop eating and drinking for a few hours before
the scan. Tell your doctors if you get nervous when
in small spaces. You may be given a sedative to help
Imaging machines are large. You will likely be lying
down during testing. At least part of your body will be
in the machine.
shows one type of imaging
machine, which is described next.
After the test, you will likely be able to resume your
activities right away. If you took a sedative, you will
have a waiting period. 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.
A CT (
omography) of your chest, belly
area, and between your hip bones is needed. 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 contrast dye is used for diagnostic CT. It makes the
pictures clearer. The dye will be injected into a vein
in your hand or arm. You will also be given a liquid
contrast to drink.
The contrast 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 to contrast.
Another imaging test combines CT with PET (
omography). PET/CT may be given in
addition to or instead of CT. It can show the presence
of cancer when other tests do not.
For PET, a sugar radiotracer will be injected into
your body. The radiotracer is detected with a special
camera. Cancer cells appear brighter than normal
Figure 2.1 Computed tomography machine
A CT machine is large and has a tunnel in the
middle. During the test, you will lie on a table that
moves slowly through the tunnel.