Let's learn about the glands in your mouth that produce saliva. Let's talk about a (Salivary Gland Scan)!

Let's learn about the glands in your mouth that produce saliva. Let's talk about a (Salivary Gland Scan)!

Have you ever wondered how saliva is produced in our mouths and what helps it? There are a type of gland called salivary glands inside our mouths. These are the glands that produce saliva and keep our mouths moist and help us digest food. So sometimes a special test is done to see if these salivary glands are working properly and if there is any problem. That is what we call a `(Salivary Gland Scan)`. Let's talk about this simply today.

What is this Salivary Gland Scan test?

Simply put, this is a test using a medical technology called ``nuclear medicine''. It's like taking a photo, but it looks at the salivary glands in your mouth. It's mainly used to check whether these glands are working properly and producing enough saliva. Some people also call this a ``salivary gland function scan''. The main salivary glands, located on either side of your ears and in your jaw, are called the parotid glands . Because this test can also provide information about these glands, it's sometimes called ``parotid scintigraphy''.

So, what time is this test done?

There are several reasons why your doctor might recommend a salivary gland scan. Let's take a look at what they are:

  • If you suspect that you have a blockage or tumor in your salivary glands: You may feel something strange inside your mouth, in your cheeks, or in your jaw area.
  • If the areas around the salivary glands are swollen and painful: This means that you feel swelling or pain in places like the inside of your mouth, on either side of your jaw, or near your ears.
  • If your mouth is constantly dry: This is medically called ``Xerostomia.'' It means that the saliva in your mouth decreases, causing your mouth to become dry.

If there are symptoms like these, the doctor can do this scan to see if there is any internal problem.

How is this scan done?

This is a slightly special test. It uses a camera and a radioactive substance (we call it a `(tracer)`). Don't worry, this `(tracer)` won't hurt you much, it only uses a very small amount.

Imagine, this `(tracer)` is like a drop of colored water. When you put it in your body, it mixes with your saliva and travels through your salivary glands. When you look at it with that special camera, you can clearly see how this dye travels along the road. It's like watching cars on a road with a `(CCTV)` camera. This allows doctors to understand how your salivary glands are functioning and whether there is a blockage somewhere.

How should you prepare before the test?

There's nothing to worry about before going for this `(Salivary Gland Scan)`. But there are a few small things you should be aware of.

  • You should remove all jewelry from your face, head, and neck area, such as earrings and necklaces , as they may interfere with the images in the scan.
  • If you have an allergy to any food, be sure to tell your doctor about it beforehand.
  • You should also inform the medical staff if you are pregnant, or think you may be pregnant . This is very important.

These are the main things you need to do. There's no need for much preparation, so keep your mind open.

What happens during the test?

Okay, now let's see what happens during the scan. You will be taken to a ``nuclear medicine'' room. You will be asked to lie down on a table there. Then, usually a ``nuclear medicine technologist'', a technician who performs these tests, will do the following:

1. First, the imaging equipment will be placed close to your face and neck. It looks a bit like an ``X-ray`` machine. But don't worry, it won't hurt.

2. Next, a small amount of the radioactive substance called ``(tracer)`` is injected into a vein in your arm. At this time, you may feel a slight pain, like a small ant stinging or a needle prick. This will go away in a few seconds.

3. Now the pictures of your salivary glands will be taken. This can take about 45 minutes. All you have to do is stay still and don't move. You won't feel any pain during the pictures or from the machine.

4. Then, stimulate your salivary glands, which means giving your mouth a mouthful of saliva, a piece of lemon, or something sour. This will cause your salivary glands to start producing more saliva.

5. Finally, in about 20 minutes, we'll take some more pictures of your salivary glands. This will look at whether there's a difference in the way your saliva flows after you give it the sour stuff.

This is what happens during the test. Stay as relaxed as possible. If you feel anything uncomfortable, tell the people there.

What to expect after the test?

After the scan is complete, you can resume your normal activities unless your doctor advises otherwise. You won't need to rest much.

But, there's one thing to remember. There may still be a small amount of the ``(tracer)`` that you injected into your body. To avoid it affecting others in any way, do these things:

  • Flush the toilet immediately after you use it. Small amounts of the tracer will be excreted in your urine and stool for the first 24 hours after the scan.
  • Wash your hands thoroughly with soap after using the toilet.

If you do this correctly, there will be no problem.

Are there any risks to this test?

For most people, the risks are very small compared to the benefits of having this test. The amount of radioactive material you are given is very small, and it is usually almost completely eliminated from your body within a day.

However, some people may have to avoid this test or postpone it for a while.

Who should avoid or postpone this test?

  • People with allergies to tracers: If you have ever had an allergic reaction to a radioactive tracer, you should definitely tell your doctor about it.
  • Breastfeeding mothers: The radioactive tracer may pass into your breast milk. Therefore, do not breastfeed your baby for a day or two after the test. Instead, give your baby expressed breast milk or formula that you have stored before the test. You can use a breast pump to express and remove the milk (also called a pump and dump). Do this until your doctor says it is safe to breastfeed again.
  • Pregnant or might be pregnant: The radiation exposure during this test may not be good for the fetus. In most cases, it is best to postpone this test unless it is absolutely necessary. Only if it is absolutely necessary, make a decision after discussing it thoroughly.

Talk to your doctor about these matters.

What will the results of the test be?

Most of the time, a radiologist will review your scans. He or she will send the information to the doctor who referred you for the test. The doctor will then discuss the results with you.

What is a normal result?

A normal result means that the tracer has passed through your salivary glands without any blockages, obstructions, or slow movements. That means the glands are working well!

What if there is an unusual result?

Abnormal results mean there may be a problem. It could be something like this:

  • Tracer can't pass through the salivary glands: This could be a sign of a condition like Sjögren's syndrome, a disease that affects the glands that produce moisture in the body due to an immune system disorder.
  • Tracer flows very slowly or not at all through one or more glands: This may indicate that a gland is blocked by a cyst, stone, or other growth.
  • Tracer is flowing through one or more of the glands more quickly than it should: This may be a sign of a condition called parotitis, which is when the parotid glands become swollen and infected.

These are the possible things. But remember, these are just suspicions. The doctor will investigate further to find out exactly what it is.

If the results are abnormal, what do you do next?

If your scan results are abnormal, don't worry. Your doctor will explain what to do next.

  • If you receive a new diagnosis, your doctor will talk to you about your treatment options, or may refer you to another specialist for further treatment.
  • In some cases, further tests may be needed before a definitive diagnosis can be made. For example, a biopsy may be performed, which involves taking a sample of tissue and examining it.

However, your doctor will do everything necessary to provide you with the best treatment.

The most important things for you to remember (Take-Home Message)

A salivary gland scan is a noninvasive test that helps detect problems with your salivary glands. It is usually painless, and there is no special preparation or care required.

If you are feeling a little nervous or stressed about this test, talk to your doctor. They are there to help you and give you the best treatment. You can talk together about why you want to have this test and how to stay as relaxed as possible throughout the test.

Remember, it's important to be aware of your health, and understanding these types of tests can help.


` Salivary Gland Scan, Salivary Gland Scan, Salivary Gland Test, Dry Mouth, Xerostomia, tracer, parotid

නිතර අසන ප්‍රශ්න (FAQ)

What is a normal result?

A normal result means that the tracer has passed through your salivary glands without any blockages, obstructions, or slow movements. That means the glands are working well!

What if there is an unusual result?

Abnormal results mean there may be a problem. It could be something like this:

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