adiation
therapy is the use of high energy radiation to destroy, or prevent
growth of undesirable cells in the body. The primary use of radiation
therapy has historically been in treatment of cancer. However, a
new treatment has been developed for people who have experienced
recurring coronary artery blockages (restenosis) after treatment
with a stent.
adiology
and Nuclear Medicine offers radiation therapy services at the following
facilities:
FREQUENTLY
ASKED QUESTIONS:
How
will I know if radiation therapy is right for me?
How is radiation therapy delivered?
What types of cancer can be treated with radiation
therapy?
How is radiation therapy used to treat coronary artery
disease?
How safe is radiation therapy?
Additional sources of information about radiation
therapy and related topics
ow
will I know if radiation therapy is right for me?
The first step
is generally a consultation. The patient visits the center and is
examined by a Board Certified physician specializing in radiation
therapy. Additional tests may be ordered. The physician will assess
the feasibility and potential effectiveness of radiation therapy.
Medical records will be reviewed and treatment options will be discussed
with the patient and other physicians involved in their care.
Based on this
consultation, the patient will receive a recommendation as to whether
radiation therapy should be used, and whether it should be done
in conjunction with other treatments such as surgery or chemotherapy.
In some cases
radiation therapy will not be a viable alternative.

ow
is radiation therapy delivered?
External beam
radiation therapy and brachytherapy are the two principal methods
used to deliver radiation and focus it on the specific portion of
the body where treatment is desired. A custom treatment plan is
developed that is designed to deliver the proper dose of radiation
to the area of interest, while minimizing exposure to surrounding
tissue.
External beam
radiation therapy is typically delivered using a machine called
a linear accelerator. Patients lie still on a couch, and the machine
moves around the body delivering x-ray beams from various angles.
Devices called blocks may be used in some cases to shield certain
parts of the body from unwanted exposure to radiation. Patients
are usually treated 5 days per week over a period of up to eight
weeks. Most treatments take just a few minutes. Patients don't feel
anything during the treatment, and most are able to continue with
their normal daily activities during treatment.
Brachytherapy
involves insertion of radioactive sources into the affected region
of the body. Depending upon the nature of the disease and the treatment
plan, these sources may be removed shortly after insertion or remain
in place permanently. A short hospital stay may be necessary with
some brachytherapy treatments.
In some cases
the two delivery methods may be used together.

hat
types of cancer can be treated with radiation therapy?
About 60% of
all people with cancer in the United States are treated with radiation
therapy at some point during the course of their disease.
Radiation therapy
is often the primary treatment for:
· skin
cancers
· cancers of the head or neck
· early stage Hodgkin's Disease
· non-Hodgkin's lymphomas
· early stage breast cancer
· certain types of lung cancer
· seminomas
· cervical cancer
· prostate cancer
· bladder cancer
· cancer of the rectum
· some brain tumors
Radiation therapy
is often used in conjunction with chemotherapy.
In some cases,
radiation therapy is used to alleviate symptoms such as pain, bleeding,
skin ulcers and bone problems in cancer patients.
Radiation therapy
may also be used to reduce the risk of recurrence after surgery
for cancers involving the brain, head, neck, breast, lung, and rectum.
ow
is radiation therapy used to treat coronary artery disease?
In many cases,
patients with blockages of a coronary artery are treated by a cardiologist
with a procedure called angioplasty to clear the blockage, followed
by insertion of a device called a stent to help keep the artery
open. In some patients, the artery will become blocked again by
scar tissue. This is called restenosis.
A new treatment
called coronary brachytherapy has been introduced to help patients
who have had restenosis of a coronary artery. A cardiologist and
a radiation oncologist will work together to clear the artery and
attempt to prevent recurrence of the blockage. The cardiologist
will use angioplasty to clear the artery. The radiation oncologist
will then insert radioactive seeds into the artery for a few minutes
to kill the cells that are causing the recurring blockage.
Read
the recent Topeka Capital-Journal article on coronary brachytherapy
ow
safe is radiation therapy?
Each patient's
course of treatment is individually designed, taking into account
the location of the treatment area, the size and shape of the body
and the nature of the disease. Extensive precautions are taken to
ensure that treatment is delivered exactly as planned.
Patients may
experience side effects during or after radiation therapy. These
vary with the type of disease and treatment used, and most are relatively
minor. Your doctor will discuss potential side effects with you
before treatment, and you should immediately report any that you
experience.
Radiation therapy
will not make your body radioactive. However, brachytherapy patients
do have radioactive sources within their bodies during treatment.
In those cases special precautions are taken to ensure the safety
of others with whom the brachytherapy patient may come into contact.
dditional
sources of information about radiation therapy and related topics:
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