FREQUENTLY ASKED QUESTIONS
What
is PET?
PET stands for Positron Emission Tomography. It is a procedure
that produces powerful images of the human body’s biological
functions. PET scans are safe and can be performed in a few
hours as an outpatient procedure. Unlike conventional imaging
systems such as X-Rays, CTs, Ultrasounds, and MRIs, PET does
not show body structure (anatomy). Instead, PET shows the chemical
function (metabolism) of an organ or tissue.
What
is PET used for?
PET is used to help diagnose and treat a number of different
diseases, including cancer, coronary heart disease, and seizure
disorders. In cancer applications, PET provides tumor imaging
and has proven to be very accurate in identifying the extent
of malignant disease.
How
accurate is PET?
PET is very accurate in showing the presence or spread of many
malignant tumors. For example, it is more accurate in detecting
the spread of lung cancer and colon cancer than any other imaging
method currently available. A high degree of accuracy has also
been demonstrated in evaluating recurrent breast cancer, melanoma,
lymphoma, ovarian cancer, brain cancer, pancreatic cancer, and
tumors of the head and neck.
What
happens when I arrive for my scan?
When you arrive for your PET scan, you will be registered by
our office personnel and taken to the PET area. There, a technologist
will ask you a series of questions regarding your medical history.
Next, a small blood sample will be taken to check your blood
sugar (glucose) level. The technologist will inject a small
amount of radioactive glucose into your bloodstream. This glucose
is called a “tracer” and will be distributed throughout
your body. There is no danger to you from this injection. Radioactive
glucose must pass multiple quality control measures before it
is used for any patient injection. (In fact, the radiation exposure
associated with PET is similar to that of a conventional CT
scan).
How
does the PET procedure work?
After your injection, you will be asked to relax and remain
relatively still for about an hour. Then, you will be asked
to lie on a table called a scanning bed. The bed will move slowly
through the scanner while it detects the injected tracer. Some
people fall asleep during the scan. When the imaging procedure
is complete, the scanner sends the resulting information to
a computer. The computer generates numerous images that will
be reviewed by a specially-trained physician. Your doctor will
receive a report and picture detailing the findings of your
exam.
How
long does the procedure take?
You can expect to be in the PET Center for one-and-a-half to
three hours. The actual scan itself takes far less time and
depends on the purpose and type of study. In most cases, a body
scan from the chin to pelvis area takes about 50-to-60 minutes.
Some exams, such as brain or heart procedures, take about 30
minutes to complete.
How
will I feel afterwards?
You should feel fine after the scan. There are no side-effects
from the injected tracer. If you have a heart scan, you may
feel flushed afterwards.
When
will I know the results of my scan?
The results of your PET scan are read shortly after the scan
is completed. You can expect a verbal report to be available
to your physician within two to three days of the scan. Your
physician will report the results to you directly.
What
should I do to prepare?
Do not eat anything after midnight the night prior to your scan.
Avoid all beverages with caffeine and sugar.
Tell your doctor if you are pregnant, might be pregnant, or
are a nursing mother.
Tell your doctor if you are diabetic.
Wear comfortable clothing.
Take prescribed medications on the day of your test unless instructed
not to do so.
Wear your hearing aid, glasses, or dentures to the PET Imaging
Center.
Leave valuables at home.
Special
preparation instructions for diabetics.
Fast 12 hours prior to exam time.
Increase your fluid (water) intake.
Make sure you have two glasses of water within two hours of
your exam time.
Do not consume any alcohol for at least 48 hours prior to exam
time.
Eat a high protein/low carbohydrate meal the evening before
your exam.
(This should be your last meal before coming in for your
exam).
High
protein/low carbohydrate means:
Eat any meat you normally would.
You can have any green vegetable in moderate amounts.
Do not eat anything with sugar in it, even in small
quantities.
Do not eat any grain, rice, pasta, bread, or chips of any
kind.
Do not consume any dairy products.
If you
have any question about your ability to follow the above instructions,
please call the PET Imaging Center for further evaluation and
clarification at 509-228-1630.
What
else should I do?
It is important that your other recent X-Ray studies (such as
CT or MRI scans) be available for the PET imaging doctor to
compare them directly to your PET scan. The films and reports
from these studies may be sent to the PET Imaging Center by
your doctor or hospital or you may be asked to bring them with
you to prevent delay in reading your PET scan.
Directions
to Cancer Care Northwest’s PET Imaging Center.
Our PET Imaging Center is located in the Deaconess Health &
Education Center, West 910 5th Avenue, Suite 102. The Deaconess
Health & Education Center is across the street from Shriners
Children’s Hospital on 5th Avenue. There is a parking
garage attached to the building.
Eastbound
I-90 Travelers:
Use exit 280-A (Maple Street). Proceed east on 4th Avenue to
Monroe Street and turn right onto Monroe. Go one block to 5th
Avenue and turn left onto 5th. The entrance to Deaconess Health
& Education Center is on the left.
Westbound
I-90 Travelers:
Use exit 200-B (Lincoln Street). Get in the far-left lane. Proceed
to 2nd Avenue. Turn left onto 2nd and go one block to Monroe
Street. Turn left onto Monroe Street and proceed to 5th Avenue.
Turn left onto 5th Avenue. The entrance to Deaconess Health
& Education Center is on the left.
From
City Center:
Take Monroe Street South to 5th Avenue. Turn left onto 5th Avenue.
The entrance to Deaconess Health & Education Center is on
the left.
Once
you have parked in the garage, take the elevator to level C.
Go around the corner on the right to Suite 102. If you have
any questions, please call the PET Imaging Center at 509-228-1630.