What is sonohysterography?
Sonohysterography is a procedure to look at the inside of the uterus. It’s a safe,
painless test that uses sound waves and a computer to create images. It doesn't use
The womb (uterus) is the organ where a baby grows during pregnancy. The bottom of
the uterus is called the cervix. This is the opening into the uterus. The cervix sits
at the top of the vagina.
During sonohysterography, you’ll be awake and lying down with your knees bent. A slim
wand called an ultrasound transducer is placed in your vagina. This wand is covered
with a disposable sheath and coated with a special gel.
Your healthcare provider will then insert a thin, flexible tube (catheter) into your
cervix. A salty fluid called saline is sent through the catheter into your uterus.
At the same time, the transducer sends high-frequency sound waves through the gel
and into your body. The echoes from these sound waves can create a real-time image
of the inside of your uterus. This can show the structure of your uterus. The saline
fluid helps the ultrasound form an image with sharper detail. Your healthcare provider
can use this information to diagnose a number of different health conditions.
In some cases, the procedure may be done without saline. For example, it wouldn’t
be used during pregnancy.
Doppler ultrasound may be used at the same time, with the same transducer. This can
give information about how blood is flowing through the vessels in your uterus.
Why might I need sonohysterography?
Healthcare providers use sonohysterography to help diagnose a number of health conditions,
Your healthcare provider might advise this test if you have symptoms that suggest
a problem with your uterus, such as:
You might need this test if a standard ultrasound test doesn’t show enough information
to diagnose a problem.
Sonohysterography has some benefits over other tests used to get information about
the uterus. Other tests include:
Hysterosalpingography. This is a type of X-ray that uses radiation.
Hysteroscopy. This is a surgical procedure that needs to be done with anesthesia.
MRI. This is an imaging test done with large magnets and a computer. An MRI may not give
as clear a picture of the inside of the uterus.
What are the risks of sonohysterography?
Sonohysterography is a safe procedure with few risks. Some women feel discomfort during
the procedure. In very rare cases, there is a small risk of pelvic infection. Your
healthcare provider will take steps to help prevent this.
Women who have active pelvic inflammatory disease (PID) should not have the procedure.
Your provider might advise a pregnancy test before the procedure. This is to avoid
any possible risk to a growing baby. Pregnant women should not have a saline sonohysterography
Talk with your healthcare provider to find out what risks may apply to you.
How do I get ready for sonohysterography?
It’s best to have the procedure in the week after your period ends. This will help
the test be more accurate. It will also lower your risk of infection.
You can eat and drink as normal on the day of your procedure. You will likely be able
to take all of your medicines as normal.
Your healthcare provider may advise taking an over-the-counter pain medicine ahead
of time. This is to help prevent discomfort.
You may be told to take an antibiotic before the test. This is to help prevent infection.
You may want to wear an absorbent pad in your underwear on the day of the procedure.
This is because saline fluid will drain from the uterus after the procedure.
Your healthcare provider may give you more instructions about how to prepare.
What happens during sonohysterography?
The test is done at a healthcare provider’s office or at a hospital. A technician
or a radiologist may do the procedure. A radiologist is a doctor who specializes in
using imaging methods to diagnose and treat diseases. The test usually lasts less
than 30 minutes. You can generally expect the following:
Before the procedure starts, you’ll need to empty your bladder. You’ll then undress
from the waist down and lie on an exam table. You will be awake and alert for the
test. You may have mild cramping during and after the procedure.
Your healthcare provider may first give you a pelvic exam to check for any pain.
The healthcare provider will cover the transducer wand with a thin sheath and a special
gel. The wand will then be put into your vagina.
The healthcare provider may move the wand slightly to get different images of your
uterus. These images appear on a video screen. This is a standard vaginal ultrasound.
After taking these images, the healthcare provider will take the transducer out.
He or she will then insert a speculum into your vagina. This is the same device used
in a standard vaginal exam. This helps keeps the vagina open so the healthcare provider
can see and reach your cervix.
The healthcare provider may use a swab to wipe and clean your cervix.
Next, a thin catheter will be put into the opening of your cervix. You may feel slight
pinching or cramping as the catheter is inserted. The speculum will then be removed
from your vagina.
The healthcare provider then puts the wand back into your vagina. Saline will be sent
through the catheter through the cervix and into the uterus. This may cause some cramping.
When enough saline fluid fills your uterus, images are taken of the inside of your
After the images are taken, the healthcare provider removes the wand and catheter.
The saline fluid will drain out of your uterus over the next few hours.
What happens after a sonohysterography?
You will likely be able to go home right after your procedure. In most cases, you
can resume your normal activities right away. The saline fluid will drain out of your
uterus over the next few hours.
For a little while after the procedure, you might have symptoms like:
These are all normal. Most women don't have pain after the procedure. If you do, you
can take over-the-counter pain medicine.
Let your provider know right away if you have severe pain or fever in the next few
days. Also, let your provider know if there is a change in the type or amount of your
vaginal discharge. These might be signs of an infection. Your provider may give you
After the exam, a radiologist will look at the images and send a report to your primary
healthcare provider. Talk over these results with your provider. The results may confirm
a health condition that needs treatment. You may need another test, such as a hysteroscopy.
Your provider can tell you more.
Before you agree to the test or the procedure make sure you know:
The name of the test or procedure
The reason you are having the test or procedure
What results to expect and what they mean
The risks and benefits of the test or procedure
What the possible side effects or complications are
When and where you are to have the test or procedure
Who will do the test or procedure and what that person’s qualifications are
What would happen if you did not have the test or procedure
Any alternative tests or procedures to think about
When and how will you get the results
Who to call after the test or procedure if you have questions or problems
How much will you have to pay for the test or procedure