NCCN Guidelines for Patients® | Multiple Myeloma - page 21

19
NCCN Guidelines for Patients
®
Multiple Myeloma, Version 1.2014
2
Tests for myeloma
Imaging tests
pictures to make one clear picture. A CT scan may be
given to further check for bone damage when a bone
survey doesn’t show any problems.
MRI
An MRI (
m
agnetic
r
esonance
i
maging) scan uses
radio waves and powerful magnets to take pictures of
the inside of the body. It creates very clear pictures of
bone and may show if any bone has been damaged
by the myeloma. MRI may be given when the bone
survey doesn’t show any problems.
PET scan
PET (
p
ositron
e
mission
t
omography) shows how
your cells are using a simple form of sugar. To
create pictures, a sugar radiotracer first needs to
be put into your body. The radiotracer emits a small
amount of energy that is detected by the machine
that takes pictures. Myeloma cells appear brighter
in the pictures because they use sugar more quickly
than normal cells. PET is very good at showing active
myeloma and how far it has spread. PET is often
used with CT. PET/CT may be used when a bone
survey doesn’t show any problems.
Figure 2.2 CT scan machine
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