706 23rd St.
Ashland, KY 41101
CT simulation is a process used
by the radiation therapy team to determine the
exact location and size of the area to be treated.
This is done in a room that contains a narrow,
movable table and special X-ray equipment.
During simulation, you will lie on the table. The
radiation therapist will position you and then
watch you through a window while the CT scanner
takes pictures or “slices” of the treatment site.
Your radiation oncologist looks at the cancerous
area with the radiation therapist.
You must lie still during simulation so the exact
area to be treated can be pinpointed. Relaxing
during simulation ensures consistent, accurate
treatments. If you are already taking pain
medication, you may want to take it before coming
to your appointment and even bring some with you
in case you need it.
The radiation therapist may use special pillows,
pads, or other devices to help hold your body in
the proper position. Sometimes contrast material
(liquid with dye in it) may be swallowed or
injected into your body so internal organs are
easier to see on the CT scan.
After your radiation oncologist locates the area
to be treated, the radiation therapist will
outline the treatment field (area to be treated)
on your skin. These tiny, permanent dots will be
used as a guide for correct positioning during
Simulation usually lasts between 15 and 30
minutes; however, you may need additional
simulation after treatment has begun. After the
simulation, dosimetry is performed.